CN108194361A - Water ring vacuum pump breaks empty shutdown control circuit automatically - Google Patents
Water ring vacuum pump breaks empty shutdown control circuit automatically Download PDFInfo
- Publication number
- CN108194361A CN108194361A CN201711487404.8A CN201711487404A CN108194361A CN 108194361 A CN108194361 A CN 108194361A CN 201711487404 A CN201711487404 A CN 201711487404A CN 108194361 A CN108194361 A CN 108194361A
- Authority
- CN
- China
- Prior art keywords
- control circuit
- relay
- water ring
- solenoid valve
- vacuum
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 230000005611 electricity Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Empty shutdown control circuit is broken automatically the invention discloses a kind of water ring vacuum pump, including starting or stopping control circuit, for controlling water ring pump startup and stopping；Electric contact vacuum meter and solenoid valve are respectively arranged on vacuum line；Solenoid valve control circuit includes main stop button, and after main stop button is pressed, solenoid valve actuation starts brokenly sky；When vacuum degree drops to electric contact vacuum meter upper limit, starting or stopping control circuit stops water ring pump；Solenoid valve is disconnected when vacuum degree drops to electric contact vacuum meter lower limit.Of the invention only need to once be manually operated can just make vacuum system break empty shutdown automatically, effectively prevent not breaking sky directly by stop button due to maloperation, unit is caused to be damaged, easy to operate, security performance greatly improves.And the problem of just powering off solenoid valve when vacuum degree reaches 0MPa, preventing that sky can not be broken completely when blank pipe caliber is too small to cause motor and storage tank to break the equalization point formed between empty and air inlet because breaking.
Description
Technical field
The present invention relates to a kind of technical field of vacuum equipment, and in particular to a kind of water ring vacuum pump breaks empty shut down and controls automatically
Circuit.
Background technology
Eccentric rotor with fixed blade in water ring vacuum pump is housed, is by water（Liquid）Throw to stator wall, water（Liquid）
The pendular ring concentric with stator is formed, pendular ring forms a kind of rotary volume-variable product vacuum pump of variable volume together with rotor blade.
In industrial many technical process, such as vacuum filter, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum
Moisture regain and vacuum outgas etc., water ring pump is widely used.
It is as shown in Figure 1 existing water ring vacuum pump two places control circuit, including water ring pump starting or stopping control circuit, including starting
Button SG '（SG）, stop button SR '（SR）, the first relay KA1, the second relay KA2 and control protect switch 1KBO, for controlling
Water ring pump startup processed and stopping；Water ring vacuum pump is protected switch 1KB0 main contacts and breaker by circuit for controlling motor by control successively
QF is connected to three phase mains.Specific work process is：When starting operation, start button SG ' is pressed（SG）, control, which is protected, switchs 1KBO lines
Enclose electric, KA1 normally opened contacts are closed, self-insurance, and water ring pump electric motor starting starts to vacuumize.During shutdown, air valve is opened manually and is broken
Then sky presses stop button SR '（SR）, water ring pump motor is out of service.
In production process, stop button SR ' 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.
Invention content
The object of the present invention is to provide a kind of water ring pumps to break empty shutdown control circuit automatically, with overcome in the prior art due to
Maloperation and the problem of unit is caused to be damaged.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of water ring vacuum pump breaks empty shut down and controls automatically
Circuit including starting or stopping control circuit, for controlling water ring pump startup and stopping, further including：Electric contact vacuum meter and solenoid valve, point
It is not installed on vacuum line；Solenoid valve control circuit, including stop button, after the stop button is pressed, the electromagnetism
Valve actuation starts brokenly sky；When vacuum degree drops to the electric contact vacuum meter upper limit, starting or stopping control circuit stops water ring pump
Only；When vacuum degree drops to the electric contact vacuum meter lower limit, disconnect the solenoid valve.
Further, the starting or stopping control circuit, including the 4th relay normally closed contact, one end be connected to phase line L1,
One end of switch auxiliary normally opened contact one is protected in one end of 6th relay normally closed contact and control, and the other end passes sequentially through third relay
One and the 6th relay coil of device normally opened contact is connected to zero curve；The other end of 6th relay normally closed contact passes sequentially through
Start button, control protect switch coil and are connected to zero curve；The start button both ends are parallel with the first relay normally open contact, described
The other end that switch auxiliary normally opened contact one is protected in control is connected to zero curve by the first relay coil.
Further, the stop button of the solenoid valve control circuit, one end are connected to the 4th relay
Normally-closed contact one end, the other end are connected to one end, electric contact vacuum meter upper limit and the lower limit of the 5th relay normally closed contact
One end, the other end of the 5th relay normally closed contact is connected to zero curve, the electric contact by third relay coil
The other end of vacuum meter upper limit is connected to zero curve by the 4th relay coil, and the electric contact vacuum meter lower limit passes through
Five relay coils are connected to zero curve；The stop button both ends are parallel with third relay normally open contact two, the third after
The electric apparatus coil both ends solenoid valve in parallel.
Further, the start button includes the live start button being connected in parallel and strange land start button；It is described to stop
Only button includes the live stop button being connected in series with and strange land stop button.
Further, one end of the stop button is connected to phase line by switching knob.
Further, the starting or stopping control circuit and solenoid valve control circuit are connected to phase line and zero curve by air switch
N。
Further, the starting or stopping control circuit further includes the second relay, and the control protects switch coil by described the
Two relay normally closed contacts are connected to zero curve, and one end that switch auxiliary normally opened contact two is protected in the control is connected to phase line, the other end
Zero curve is connected to by second relay coil, for carrying out overload protection.
Further, circuit for controlling motor is further included, including breaker, one end is connected to three electricity, and the other end passes through control
It protects switch main contacts and is connected to Water-ring vacuum pump motor.
The beneficial effects of the invention are as follows：Original manual air valve is replaced by solenoid valve control, by stopping after production
Only button only need to once be manually operated with regard to vacuum system can be made to break empty shutdown automatically, need to be manually operated twice with the prior art
It compares, effectively prevents not breaking sky directly by stop button due to maloperation, unit is caused to be damaged, easy to operate, safety
It can greatly improve.And when vacuum degree reach 0MPa when just power off solenoid valve, prevent because break blank pipe caliber it is too small caused by motor and
The problem of storage tank breaks the equalization point formed between empty and air inlet and can not break sky completely.
Description of the drawings
Fig. 1 is existing water ring vacuum pump two places control circuit.
Fig. 2 breaks empty shutdown control circuit for water ring vacuum pump of the embodiment of the present invention automatically.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
It is illustrated in figure 2 water ring vacuum pump of the embodiment of the present invention and breaks empty shutdown control circuit automatically, including start-up and shut-down control electricity
Road, for controlling water ring pump startup and stopping, including the 4th relay KA4 normally-closed contacts, one end is connected to phase line L1, the 6th
One end of switch 1KBO auxiliary normally opened contacts one is protected in one end of relay KA6 normally-closed contacts and control, and the other end passes sequentially through third
One KA3-1 of relay KA3 normally opened contacts and the 6th relay KA6 coils are connected to zero curve N；The 6th relay KA6 is normally closed
The other end of contact passes sequentially through start button SG, SG ', control protects switch 1KBO coils and is connected to zero curve N；The start button
SG, SG ' both ends are parallel with the first relay KA1 normally opened contacts, and the other end of switch 1KBO auxiliary normally opened contacts one is protected in the control
Zero curve N is connected to by the first relay KA1 coils
Circuit for controlling motor, including circuit breaker Q F, one end is connected to three electricity, and the other end protects switch 1KBO main contacts company by controlling
It is connected to Water-ring vacuum pump motor.
The present invention increases electric contact vacuum meter and solenoid valve YV1 newly on vacuum line, further includes solenoid valve control circuit, wraps
Include stop button SR, SR ', one end is connected to described 4th relay KA4 normally-closed contacts one end, the other end be connected to the 5th after
One end of electric appliance KA5 normally-closed contacts, one end of electric contact vacuum meter upper limit JY1-1 and lower limit JY1-2, the 5th relay
The other end of device KA5 normally-closed contacts is connected to zero curve N, the electric contact vacuum meter upper limit by third relay KA3 coils
The other end of JY1-1 is connected to zero curve N by the 4th relay KA4 coils, and the electric contact vacuum meter lower limit JY1-2 passes through
5th relay KA5 coils are connected to zero curve N；The stop button SR, it is normally opened tactile that SR ' both ends are parallel with third relay KA3
Two KA3-2 of point, the third relay KA3 coils both ends solenoid valve YV1 in parallel.
In the present embodiment, start button SG, SG ' it is opened including the live start button SG ' being connected in parallel and strange land
Dynamic button SG；Described stop button SR, SR ' including the live stop button SR ' being connected in series with and strange land stop button SR, it can be into
Row two places control.
In the present embodiment, described stop button SR, SR ' one end phase line L1 is connected to by switching knob SA1, existing
Field increases rotary switch SA1 newly, controls emergent shutdown use.Automated contact BA can be set simultaneously, operated available for daemon software.
In order to carry out overload protection to circuit, on the one hand, the starting or stopping control circuit and solenoid valve control circuit pass through sky
Air cock 3QF is connected to phase line L1 and zero curve N；On the other hand, starting or stopping control circuit further includes the second relay KA2, the control
It protects switch 1KBO coils and zero curve N is connected to by the second relay KA2 normally-closed contacts, it is normal that switch 1KBO auxiliary is protected in the control
The one end for opening contact two is connected to phase line L1, and the other end is connected to zero curve N by the second relay KA2 coils.Control is protected and is opened
Close 1KBO can also to running, overloading, the states such as thread off indicate.
Control circuit of the present invention coordinates relay on-off using electric contact vacuum meter high-low position contact, automatic broken to realize
The purpose shut down after sky.When vacuum system normal operation, vacuum degree is more than -0.09MPa, the setting of the electric contact vacuum meter upper limit
0MPa, electric contact vacuum meter upper limit contact closure are set as -0.05MPa, lower limit；When pressing stop button SR or SR ',
Solenoid valves start brokenly sky, and when vacuum degree is less than upper limit setting -0.05MPa, motor is out of service, when vacuum degree reaches
During lower limit 0MPa, solenoid valve power-off so as to achieve the purpose that be shut down after breaking sky automatically, can be prevented because broken blank pipe caliber is too small
Motor and storage tank is caused to break the problem of forming equalization point between sky and air inlet and sky can not be broken completely, it is straight especially suitable for broken blank pipe
Diameter≤DN25 vacuum systems.Original manual air valve is replaced by solenoid valve control, need to only be stopped after production by primary
Button, with regard to can make vacuum system break automatically it is empty shut down, compared with the prior art needs to be manually operated twice, effectively prevent due to
Maloperation and broken sky directly presses stop button, unit is caused to be damaged, easy to operate, security performance greatly improves.
In short, the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit the invention, it is all in the present invention
Spirit and principle within all any modification, equivalent and improvement made etc., should be included in protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of water ring vacuum pump breaks empty shutdown control circuit automatically, including starting or stopping control circuit, for controlling water ring pump startup
And stopping, which is characterized in that further including：
Electric contact vacuum meter and solenoid valve（YV1）, it is respectively arranged on vacuum line；
Solenoid valve control circuit, including stop button（SR, SR '）, when pressing the stop button（SR, SR '）Afterwards, the electromagnetism
Valve actuation starts brokenly sky；When vacuum degree drops to the electric contact vacuum meter upper limit, starting or stopping control circuit stops water ring pump
Only；When vacuum degree drops to the electric contact vacuum meter lower limit, disconnect the solenoid valve.
2. a kind of water ring vacuum pump according to claim 1 breaks empty shutdown control circuit automatically, which is characterized in that described
Starting or stopping control circuit, including the 4th relay（KA4）Normally-closed contact, one end are connected to phase line L1, the 6th relay（KA6）Often
Switch is protected in one end of closed contact and control（1KBO）One end of normally opened contact one is assisted, the other end passes sequentially through third relay
（KA3）Normally opened contact one（KA3-1）With the 6th relay（KA6）Coil is connected to zero curve N；6th relay（KA6）Often
The other end of closed contact passes sequentially through start button（SG, SG '）, control protect switch（1KBO）Coil is connected to zero curve N；The startup
Button（SG, SG '）Both ends are parallel with the first relay（KA1）Switch is protected in normally opened contact, the control（1KBO）Assist normally opened contact
One other end passes through the first relay（KA1）Coil is connected to zero curve N.
3. a kind of water ring vacuum pump according to claim 2 breaks empty shutdown control circuit automatically, which is characterized in that the electricity
The stop button of magnet valve control circuit（SR, SR '）, one end is connected to the 4th relay（KA4）Normally-closed contact one
End, the other end are connected to the 5th relay（KA5）One end of normally-closed contact, electric contact vacuum meter upper limit（JY1-1）And lower limit
Position（JY1-2）One end, the 5th relay（KA5）The other end of normally-closed contact passes through third relay（KA3）Coil connects
It is connected to zero curve N, the electric contact vacuum meter upper limit（JY1-1）The other end pass through the 4th relay（KA4）Coil is connected to
Zero curve N, the electric contact vacuum meter lower limit（JY1-2）Pass through the 5th relay（KA5）Coil is connected to zero curve N；It is described to stop
Only button（SR, SR '）Both ends are parallel with third relay（KA3）Normally opened contact two（KA3-2）, the third relay（KA3）
The coil both ends solenoid valve in parallel（YV1）.
4. a kind of water ring vacuum pump according to Claims 2 or 3 breaks empty shutdown control circuit automatically, which is characterized in that institute
State start button（SG, SG '）Including the live start button being connected in parallel（SG’）With strange land start button（SG）；The stopping
Button（SR, SR '）Including the live stop button being connected in series with（SR’）With strange land stop button（SR）.
5. a kind of water ring vacuum pump according to claim 1-3 any one breaks empty shutdown control circuit, feature automatically
It is, the stop button（SR, SR '）One end phase line L1 is connected to by switching knob SA1.
6. a kind of water ring vacuum pump according to claim 1-3 any one breaks empty shutdown control circuit, feature automatically
It is, the starting or stopping control circuit and solenoid valve control circuit pass through air switch（3QF）It is connected to phase line L1 and zero curve N.
7. a kind of water ring vacuum pump according to Claims 2 or 3 breaks empty shutdown control circuit automatically, which is characterized in that institute
It states starting or stopping control circuit and further includes the second relay（KA2）, the control, which is protected, to be switched（1KBO）Coil passes through second relay
（KA2）Normally-closed contact is connected to zero curve N, and switch is protected in the control（1KBO）One end of auxiliary normally opened contact two is connected to phase line L1,
The other end passes through second relay（KA2）Coil is connected to zero curve N, for carrying out overload protection.
8. a kind of water ring vacuum pump according to Claims 2 or 3 breaks empty shutdown control circuit automatically, which is characterized in that also
Including circuit for controlling motor, including breaker（QF）, one end be connected to three electricity, the other end pass through control protect switch（1KBO）It is main to touch
Point is connected to Water-ring vacuum pump motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711487404.8A CN108194361A (en) | 2017-12-30 | 2017-12-30 | Water ring vacuum pump breaks empty shutdown control circuit automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711487404.8A CN108194361A (en) | 2017-12-30 | 2017-12-30 | Water ring vacuum pump breaks empty shutdown control circuit automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194361A true CN108194361A (en) | 2018-06-22 |
Family
ID=62587182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711487404.8A Pending CN108194361A (en) | 2017-12-30 | 2017-12-30 | Water ring vacuum pump breaks empty shutdown control circuit automatically |
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| Country | Link |
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| CN (1) | CN108194361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956695A (en) * | 2017-12-30 | 2018-04-24 | 浙江尖峰药业有限公司 | Roots vacuum system breaks empty halt circuit automatically |
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