CN207753640U - Roots vacuum system breaks empty shutdown control circuit automatically - Google Patents
Roots vacuum system breaks empty shutdown control circuit automatically Download PDFInfo
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- CN207753640U CN207753640U CN201721911376.3U CN201721911376U CN207753640U CN 207753640 U CN207753640 U CN 207753640U CN 201721911376 U CN201721911376 U CN 201721911376U CN 207753640 U CN207753640 U CN 207753640U
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Abstract
The utility model discloses a kind of Roots vacuum systems to break empty shutdown control circuit, including water ring pump starting or stopping control circuit automatically, for controlling water ring pump startup and stopping；The Roots vaccum pump starting or stopping control circuit being connect with water ring pump starting or stopping control circuit, including the first electric contact vacuum meter, the Roots vacuum pump startup when vacuum degree reaches the first electric contact vacuum meter upper limit；When vacuum degree reaches the first electric contact vacuum meter lower limit, Roots vaccum pump stops, and further includes the second electric contact vacuum meter and solenoid valve, is respectively arranged on vacuum line；Solenoid valve control circuit includes a stop button, and solenoid valve actuation starts brokenly sky after pressing stop button, and when vacuum degree reaches the second electric contact vacuum meter lower limit, solenoid valve disconnects, water ring pump stops.The utility model only need to once be manually operated can make vacuum system break automatically it is empty shut down, effectively avoid due to maloperation and broken sky directly causes unit to be damaged by stop button, easy to operate, security performance greatly improves.
Description
Technical field
The utility model is related to a kind of technical field of vacuum equipment, and in particular to a kind of Roots vacuum system breaks sky and stops automatically
Machine control circuit.
Background technology
Roots vaccum pump refers to the built-in lobed rotor there are two opposite direction synchronous rotary of pump, between rotor, rotor and pump
There is slight gap between shell inner wall and a kind of non-touching positive displacement vacuum pump.Roots vaccum pump is widely used in oil, chemical industry, smelting
The industry such as gold, weaving, pharmacy.
It is existing Roots vacuum system control circuit, including water ring pump starting or stopping control circuit as shown in Figure 1, including starts rotation
Button SB1, stop button SB2, first contactor KM1 and the first electrothermal relay FR1, for controlling water ring pump startup and stopping；With
The Roots vaccum pump starting or stopping control circuit of the water ring pump starting or stopping control circuit connection, including start knob SA1, the first electric contact
Vacuum meter YJ1, the first relay KA1, the second relay KA2, second contactor KM2 and the second electrothermal relay FR2, work as vacuum degree
When reaching the first electric contact vacuum meter upper limit, make the Roots vacuum pump startup；When vacuum degree reaches first electricity
When contact vacuum meter lower limit, the Roots vaccum pump is made to stop；Warning circuit, including third relay KA3, button SA2, report
Alert electric bell HA, the first electrothermal relay FR1, the second electrothermal relay FR2 and water-pressure relay DSK；And circuit for controlling motor, connection
Water ring pump and Roots vaccum pump, including main circuit breaker QF, the first circuit breaker Q F1, the second circuit breaker Q F2, first contactor KM1 master
Contact, second contactor KM2 main contacts, the first electrothermal relay FR1, the second electrothermal relay FR2.
Specific work process is：When starting operation, closes and start knob SA1, press start button SB1, first contactor
KM1 coils obtain electric, and water ring pump electric motor starting starts to vacuumize；When vacuum degree reaches upper limit, such as -0.08MPa, the first electricity
Contact vacuum meter upper limit contact YJ1-1 is closed, and the second relay KA2 coils obtain electric, while the normally opened auxiliary of sieve the second relay KA2
Two KA2-2 of contact is closed, and second contactor KM2 coils obtain electric, Roots vacuum pump startup.When shutdown, air valve is opened manually, when
When vacuum degree is less than lower limit, such as -0.05MPa, the first electric contact vacuum meter lower limit contact YJ1-2 is closed, the first relay KA1
Coil obtains electric, while the first relay KA1 normally closed auxiliary contacts two KA1-2 is opened, second contactor KM2 coil losing electricities, Roots
Vacuum pump is out of service, then presses stop button SB2, and water ring pump motor is out of service.
In production process, stop button SB2 is directly pressed since maloperation is broken empty, cause motor operation direction with
The reaction force in pipe network negative pressure direction, vacuum pump body impeller is damaged, which reprocesses long in time limit, influences normally to produce.
Utility model content
The purpose of this utility model is to provide a kind of Roots vacuum system and breaks empty shutdown control circuit automatically, existing to overcome
The problem of causing unit to be damaged due to maloperation in technology.
To achieve the above object, the utility model adopts the following technical solution：A kind of Roots vacuum system breaks sky and stops automatically
Machine control circuit, including water ring pump starting or stopping control circuit, for controlling water ring pump startup and stopping；With the water ring pump start and stop control
The Roots vaccum pump starting or stopping control circuit of circuit connection processed, including the first electric contact vacuum meter, when vacuum degree reaches described first
When electric contact vacuum meter upper limit, make the Roots vacuum pump startup；When vacuum degree reaches under the first electric contact vacuum meter
When limit, so that the Roots vaccum pump is stopped, further include：Second electric contact vacuum meter and solenoid valve, are respectively arranged in vacuum tube
On the road；Solenoid valve control circuit, including a stop button, after pressing the stop button, for making the solenoid valve be attracted
Start brokenly sky, and when vacuum degree reaches the second electric contact vacuum meter lower limit, so that the solenoid valve is disconnected, while water ring
Pump starting or stopping control circuit makes water ring pump stop.
Further, the solenoid valve control circuit includes stop button SB2, one end connect three-phase electricity phase line L1,
One end of the normally opened auxiliary contact of third relay KA3, the other end of the other end connection normally opened auxiliary contact of third relay KA3,
One end of 4th relay KA4 normally closed auxiliary contacts, one KA4-1, the second electric contact vacuum meter lower limit one end, the 4th relay
One end of one end and solenoid valve of the other end connection third relay KA3 coils of one KA4-1 of device KA4 normally closed auxiliary contacts, the
The other end of three relay KA3 coils and the other end of solenoid valve are connected to zero curve N, the second electric contact vacuum meter lower limit it is another
One end is connected to zero curve N by the 4th relay KA4 coils.
Further, the water ring pump starting or stopping control circuit includes start button SB1, and one end connects the phase line of three-phase electricity
One end of L1, first contactor KM1 normally closed auxiliary contacts, the other end of other end connection first contactor normally closed auxiliary contact,
One end of 4th relay KA4 normally closed auxiliary contacts, two KA4-2, two KA4-2's of the 4th relay KA4 normally closed auxiliary contacts is another
End passes sequentially through the coil of first contactor KM1 and the first electrothermal relay FR1 normally-closed contacts are connected to zero curve.
Further, the Roots vaccum pump starting or stopping control circuit includes starting knob SA1, and one end connects the water ring
Starting or stopping control circuit is pumped, the other end connects one end of the first electric contact vacuum meter upper limit YJ1-1 and lower limit YJ1-2, second
One end of normally opened one KA2-1 of auxiliary contact of relay KA2, one end of normally opened two KA2-2 of auxiliary contact of the second relay KA2,
The other end of one end of the two normally opened auxiliary contact of contactor KM2, the first electric contact vacuum meter upper limit YJ1-1 connects the second relay
The other end of normally opened one KA2-1 of auxiliary contact of device KA2, one end of one KA1-1 of the first relay KA1 normally closed auxiliary contacts, first
The other end of one KA1-1 of relay KA1 normally closed auxiliary contacts is connected to zero curve N by the second relay KA2 coils；First electricity connects
The other end of point vacuum meter lower limit is connected to zero curve N, the second normally opened auxiliary of relay KA2 by the first relay KA1 coils
It is normal that the other end of two KA2-2 of contact and the other end of the normally opened auxiliary contact of second contactor KM2 pass sequentially through the first relay KA1
It closes two KA1-2 of auxiliary contact, second contactor KM2 coils and the second electrothermal relay FR2 normally-closed contacts and is connected to zero curve N.
Further, further include the warning circuit being connected between phase line L1 and zero curve N, when water ring pump or Roots vaccum pump
When motor overload or when water level exceeds preset value, alarm signal is sent out.
Further, the water ring pump starting or stopping control circuit, Roots vaccum pump starting or stopping control circuit and solenoid valve control electricity
Road is connected to phase line L1 and zero curve N by air switch 3QF.
Further, further include circuit for controlling motor, connect the water ring pump and Roots vaccum pump, the motor control electricity
Road includes：First electrothermal relay FR1 thermal elements, one end are connect with water ring pump, and the other end passes sequentially through first contactor KM1 master and touches
Point, the first circuit breaker Q F1, main circuit breaker QF are connected to three-phase electricity；Second electrothermal relay FR2 thermal elements, one end and Roots vacuum
Pump connection, the other end pass sequentially through second contactor KM2 main contacts, the second circuit breaker Q F2, main circuit breaker QF and are connected to three-phase
Electricity.
Further, the first electric contact vacuum meter lower limit is identical with the second electric contact vacuum meter lower limit.
The utility model has the beneficial effects that：Original manual air valve is replaced by solenoid valve control, after production
Stop button is pressed, only need to once be manually operated can make vacuum system break empty shutdown automatically, be needed with the prior art manual twice
Operation is compared, and effectively prevents not breaking sky directly by stop button due to maloperation, unit is caused to be damaged, easy to operate, peace
Full performance greatly improves.
Description of the drawings
Fig. 1 is existing Roots vacuum system control circuit.
Fig. 2 is that the utility model embodiment Roots vacuum system breaks empty shutdown control circuit automatically.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It is illustrated in figure 2 the utility model embodiment Roots vaccum pump and breaks empty shutdown control circuit, including water ring pump automatically
Starting or stopping control circuit, for controlling water ring pump startup and stopping.Start button SB1 is specifically included, one end connects three-phase electricity
One end of phase line L1, first contactor KM1 normally closed auxiliary contacts, the other end connect the another of first contactor normally closed auxiliary contact
It holds, one end of two KA4-2 of the 4th relay KA4 normally closed auxiliary contacts, two KA4-2's of the 4th relay KA4 normally closed auxiliary contacts
The other end passes sequentially through the coil of first contactor KM1 and the first electrothermal relay FR1 normally-closed contacts are connected to zero curve.
The Roots vaccum pump starting or stopping control circuit being connect with the water ring pump starting or stopping control circuit, including start knob SA1,
One end connects the water ring pump starting or stopping control circuit, and the other end connects the first electric contact vacuum meter upper limit YJ1-1 and lower limit
Position one end of YJ1-2, one end of normally opened one KA2-1 of auxiliary contact of the second relay KA2, the normally opened auxiliary of the second relay KA2 are touched
One end of two KA2-2 of point, one end of the normally opened auxiliary contact of second contactor KM2, the first electric contact vacuum meter upper limit YJ1-1's
The other end connects the other end, the first relay KA1 normally closed auxiliary contacts of normally opened one KA2-1 of auxiliary contact of the second relay KA2
The other end of one end of one KA1-1, one KA1-1 of the first relay KA1 normally closed auxiliary contacts is connected by the second relay KA2 coils
It is connected to zero curve N；The other end of first electric contact vacuum meter lower limit is connected to zero curve N by the first relay KA1 coils, and second
The other end of normally opened two KA2-2 of auxiliary contact of relay KA2 and the other end of the normally opened auxiliary contact of second contactor KM2 lead to successively
Cross two KA1-2 of the first relay KA1 normally closed auxiliary contacts, second contactor KM2 coils and the second electrothermal relay FR2 normally-closed contacts
It is connected to zero curve N.
Circuit for controlling motor, connects the water ring pump and Roots vaccum pump, and the circuit for controlling motor includes：First heat after
Electric appliance FR1 thermal elements, one end are connect with water ring pump, and the other end passes sequentially through first contactor KM1 main contacts, the first breaker
QF1, main circuit breaker QF are connected to three-phase electricity；Second electrothermal relay FR2 thermal elements, one end are connect with Roots vaccum pump, the other end
It passes sequentially through second contactor KM2 main contacts, the second circuit breaker Q F2, main circuit breaker QF and is connected to three-phase electricity.
The utility model newly installs one second electric contact vacuum meter and solenoid valve and a solenoid valve control on vacuum line
Circuit processed, including stop button SB2, the phase line L1 of one end connection three-phase electricity, the one of the normally opened auxiliary contact of third relay KA3
End, the other end connect the other end, the 4th relay KA4 normally closed auxiliary contacts one of the normally opened auxiliary contact of third relay KA3
One end of KA4-1, the second electric contact vacuum meter JY2 lower limits one end, one KA4-1 of the 4th relay KA4 normally closed auxiliary contacts
The other end connection third relay KA3 coils one end and solenoid valve one end, the other end of third relay KA3 coils and
The other end of solenoid valve is connected to zero curve N, and the other end of the second electric contact vacuum meter JY2 lower limits passes through the 4th relay KA4
Coil is connected to zero curve N.
Specific work process is：It when starting operation, is similarly to close and starts knob SA1, press start button SB1, first
Contactor KM1 coils obtain electric, and water ring pump electric motor starting starts to vacuumize；When vacuum degree reaches upper limit, such as -0.08MPa,
First electric contact vacuum meter upper limit contact YJ1-1 is closed, and the second relay KA2 coils obtain electric, while the second relay KA2 is normally opened
Two KA2-2 of auxiliary contact is closed, and second contactor KM2 coils obtain electric, Roots vacuum pump startup.When stopping, stop button is pressed
SB2, KA3 coil obtain electric, and solenoid valve actuation starts brokenly sky, when vacuum degree reaches the first electric contact vacuum meter and the second electric contact is true
Empty table lower limit, such as -0.05MPa, JY2 normally opened contacts are closed, and KA4 coils obtain electric, while KA4 normally-closed contacts two KA4-2 is disconnected,
Motor and solenoid valve power-off are out of service.At the same time, YJ1-2 normally opened contacts are also closed, and KA1 coils obtain electric, KA1 normally-closed contacts
KA1-2 is disconnected, and KM2 coil losing electricities, Roots vaccum pump also powers off stopping.
It is additionally provided with warning circuit between phase line L1 and zero curve N, when water ring pump or Roots vaccum pump motor overload, or
When water level exceeds preset value, alarm signal is sent out.In addition manual bypass can be increased newly, in case being used when solenoid valve failure.The water
Ring pump starting or stopping control circuit, Roots vaccum pump starting or stopping control circuit and solenoid valve control circuit are connected to by air switch 3QF
Phase line L1 and zero curve N, plays a protective role when circuit overloads.
The utility model control circuit is suitable for broken blank pipe diameter >=DN50 vacuum systems, is replaced by solenoid valve control original
Manual air valve, as soon as after production only need to by time stop button, can make vacuum system break automatically it is empty shut down, and it is existing
Technology, which needs to be manually operated twice, to be compared, and is effectively prevented not breaking sky directly by stop button due to maloperation, is led to unit
Damage, easy to operate, security performance greatly improves.
In short, the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in this practicality
Within novel protection domain.
Claims (9)
1. a kind of Roots vacuum system breaks empty shutdown control circuit, including water ring pump starting or stopping control circuit automatically, for controlling water
Ring pump startup and stopping；The Roots vaccum pump starting or stopping control circuit being connect with the water ring pump starting or stopping control circuit, including first
Electric contact vacuum meter makes the Roots vacuum pump startup when vacuum degree reaches the first electric contact vacuum meter upper limit；When
When vacuum degree reaches the first electric contact vacuum meter lower limit, the Roots vaccum pump is set to stop, which is characterized in that also wrapping
It includes：
Second electric contact vacuum meter and solenoid valve, are respectively arranged on vacuum line；
Solenoid valve control circuit, including a stop button, after pressing the stop button, the solenoid valve actuation starts brokenly
Sky, and when vacuum degree reaches the second electric contact vacuum meter lower limit, so that the solenoid valve is disconnected, while water ring pump start and stop
Control circuit makes water ring pump stop.
2. a kind of Roots vacuum system according to claim 1 breaks empty shutdown control circuit automatically, which is characterized in that described
Solenoid valve control circuit includes stop button (SB2), and phase line L1, the third relay (KA3) that one end connects three-phase electricity are normally opened
One end of auxiliary contact, the other end connect the other end, the 4th relay (KA4) of third relay (KA3) normally opened auxiliary contact
One end of normally closed auxiliary contact one (KA4-1), the second electric contact vacuum meter lower limit one end, the 4th relay (KA4) is normally closed
One end of one end and solenoid valve (YV1) of other end connection third relay (KA3) coil of auxiliary contact one (KA4-1), the
The other end of three relays (KA3) coil connects zero curve N, the second electric contact vacuum meter lower limit with the other end of solenoid valve (YV1)
The other end of position connects zero curve N by the 4th relay (KA4) coil.
3. a kind of Roots vacuum system according to claim 1 breaks empty shutdown control circuit automatically, which is characterized in that described
Water ring pump starting or stopping control circuit includes start button (SB1), and one end connects the phase line L1 of three-phase electricity, first contactor (KM1)
One end of normally closed auxiliary contact, it is normal that the other end connects the other end of first contactor normally closed auxiliary contact, the 4th relay (KA4)
One end of auxiliary contact two (KA4-2) is closed, the other end of the 4th relay (KA4) normally closed auxiliary contact two (KA4-2) leads to successively
The coil and the first electrothermal relay (FR1) normally-closed contact for crossing first contactor (KM1) are connected to zero curve.
4. breaking empty shutdown control circuit, feature automatically according to a kind of Roots vacuum system of claim 1-3 any one of them
It is, the Roots vaccum pump starting or stopping control circuit includes starting knob (SA1), and one end connects the water ring pump start-up and shut-down control
Circuit, the other end connect one end, the second relay of the first electric contact vacuum meter upper limit (YJ1-1) and lower limit (YJ1-2)
(KA2) one end of normally opened auxiliary contact one (KA2-1), the normally opened auxiliary contact two (KA2-2) of the second relay (KA2) one end,
One end of second contactor (KM2) normally opened auxiliary contact, the other end connection the of the first electric contact vacuum meter upper limit (YJ1-1)
The other end, the one (KA1- of the first relay (KA1) normally closed auxiliary contact of the normally opened auxiliary contact one (KA2-1) of two relays (KA2)
1) other end of one end, the first relay (KA1) normally closed auxiliary contact one (KA1-1) passes through the second relay (KA2) coil
It is connected to zero curve N；The other end of first electric contact vacuum meter lower limit is connected to zero curve N by the first relay (KA1) coil,
The other ends of the normally opened auxiliary contact two (KA2-2) of second relay (KA2) and second contactor (KM2) normally opened auxiliary contact it is another
One end passes sequentially through the first relay (KA1) normally closed auxiliary contact two (KA1-2), second contactor (KM2) coil and the second heat
Relay (FR2) normally-closed contact is connected to zero curve N.
5. a kind of Roots vacuum system according to claim 1 breaks empty shutdown control circuit automatically, which is characterized in that also wrap
The warning circuit being connected between phase line L1 and zero curve N is included, when water ring pump or Roots vaccum pump motor overload or water level exceeds
When preset value, alarm signal is sent out.
6. a kind of Roots vacuum system according to claim 1 breaks empty shutdown control circuit automatically, which is characterized in that described
Water ring pump starting or stopping control circuit, Roots vaccum pump starting or stopping control circuit and solenoid valve control circuit are connected by air switch (3QF)
It is connected to phase line L1 and zero curve N.
7. a kind of Roots vacuum system according to claim 4 breaks empty shutdown control circuit automatically, which is characterized in that also wrap
Circuit for controlling motor is included, the water ring pump and Roots vaccum pump are connected, the circuit for controlling motor includes：
First electrothermal relay (FR1) thermal element, one end are connect with water ring pump, and it is main that the other end passes sequentially through first contactor (KM1)
Contact, the first breaker (QF1), main circuit breaker (QF) are connected to three-phase electricity；
Second electrothermal relay (FR2) thermal element, one end are connect with Roots vaccum pump, and the other end passes sequentially through second contactor
(KM2) main contacts, the second breaker (QF2), main circuit breaker (QF) are connected to three-phase electricity.
8. a kind of Roots vacuum system according to claim 1-3 or 5 any one breaks empty shutdown control circuit automatically,
It is characterized in that, the first electric contact vacuum meter lower limit is identical with the second electric contact vacuum meter lower limit.
9. a kind of Roots vacuum system according to claim 4 breaks empty shutdown control circuit automatically, which is characterized in that described
First electric contact vacuum meter lower limit is identical with the second electric contact vacuum meter lower limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911376.3U CN207753640U (en) | 2017-12-30 | 2017-12-30 | Roots vacuum system breaks empty shutdown control circuit automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911376.3U CN207753640U (en) | 2017-12-30 | 2017-12-30 | Roots vacuum system breaks empty shutdown control circuit automatically |
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| Publication Number | Publication Date |
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| CN207753640U true CN207753640U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721911376.3U Active CN207753640U (en) | 2017-12-30 | 2017-12-30 | Roots vacuum system breaks empty shutdown control circuit automatically |
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| CN (1) | CN207753640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075688A (en) * | 2017-12-30 | 2018-05-25 | 浙江尖峰药业有限公司 | Roots vacuum system breaks empty shutdown control circuit automatically |
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2017
- 2017-12-30 CN CN201721911376.3U patent/CN207753640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075688A (en) * | 2017-12-30 | 2018-05-25 | 浙江尖峰药业有限公司 | Roots vacuum system breaks empty shutdown control circuit automatically |
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