CN209070351U - A kind of PLC control circuit of mud feeding system - Google Patents
A kind of PLC control circuit of mud feeding system Download PDFInfo
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- CN209070351U CN209070351U CN201821215948.9U CN201821215948U CN209070351U CN 209070351 U CN209070351 U CN 209070351U CN 201821215948 U CN201821215948 U CN 201821215948U CN 209070351 U CN209070351 U CN 209070351U
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Abstract
The utility model relates to ceramic production device fields, more particularly to a kind of PLC control circuit of mud feeding system, including PLC, the PLC includes CPU, input unit and output unit, and the PLC control circuit includes air inlet pressurized control route, pulp control route, gas exhaust inspecting route, grout injection control route, mixing control route and vacuumizes control route.By the PLC control circuit of the utility model mud feeding system, the liquid level of mud can be detected automatically, and the control that realizes semi-automation, improve production efficiency, pulp control is accurate.
Description
Technical field
The utility model relates to ceramic production device fields, are specifically related to a kind of PLC control electricity of mud feeding system
Road.
Background technique
Injection forming is a kind of method for slurry casting being made in gypsum mold product, and method is multiple suitable for shape
The batch of miscellaneous or big part product forms.Substantially, ingredient adds water-base mud-injection forming-drying-firing for its production.It is modern
Production in, slip casting step gradually replaces artificial production, vase, product pot, teapot, sugar with Machine automated or semi-automatic production
The more complex more fruits of system member of the shapes such as cylinder are formed with slip casting method.It is relatively simple to infuse the paddle method of forming, i.e., infuses mud made of blank
Enter in plaster cast, because gypsum has water imbibition, so, the moisture in the part mud of model inner wall, by Porous
Gypsum is sucked and forms the mud layer of shape same as model inner wall in plaster mold inner wall, this mud layer adds as time increases
It is thick.After stopping a period of time, extra mud in the mold that inclines, and the pug layer close to gypsum mold inner wall then stays in model；Again
After a period of time, mud layer shrinks naturally and is detached from model, the crude green body of formation can be taken out.Traditional injection forming production
In line, mud is directly delivered in model from mud pit, due in mud pit mud stand be easy precipitating, cause raw material at
Point unstable, mud is easy overrich or excessively dilute, and bubble is easily mixed in mud, and product is caused to crack, in addition, mud pit land occupation face
Product is big, therefore can only be set to the place far from grouting port, and transfer pipeline is too long, and pumping pressure is insufficient, instability of flow, for solution
The certainly above problem is being internally provided with and is stirring for storing mud close to the position of grouting port setting slurry can in the prior art
Device is mixed, mud sediment is prevented.However, existing slurry can has the following problems: 1, being easy to mix without solution mud bladdery
Problem, 2, mud level needs manually to monitor by besel in slurry can, and manually open slurry-inlet valve door, 3, blender and respectively
Valve needs manual control, troublesome in poeration, 4, existing equipment grout outlet discharging be to be realized by going out stock pump, but stock pump exists out
When stopping, inside there are inertia, cannot achieve being precisely controlled for slurry.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of PLC control circuits of mud feeding system, by this
PLC control circuit detects the liquid level of mud automatically, and realize semi-automation control, improves production efficiency, pulp control is accurate, with solution
The problem of certainly being proposed in background technique.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows: a kind of PLC of mud feeding system
Control circuit, including PLC, the PLC include CPU, input unit and output unit, it is characterised in that: the input list of the PLC
Member includes following input contact: minimum liquid level set by highest liquid level normal opened contact, liquidometer set by liquidometer is normal
Open maximal pressure force value normally closed contact set by contact, pressure sensor, stirring starts switch normal opened contact, stirring shutdown switch
Normally closed contact, vacuumizing start switch normal opened contact, vacuumize shutdown switch normally closed contact, pulp starts switch normal opened contact,
Pulp shutdown switch normally closed contact starts switch normal opened contact into slurry, starts switch often into slurry shutdown switch normally closed contact, air inlet
Contact, air inlet shutdown switch normally closed contact are opened, is vented and opens minimal pressure force value set by switch normal opened contact, pressure sensor
Normally closed contact；
The output unit of the PLC includes following output contact: stirring motor normally closed contact, stirring motor output connect
Point, slip casting solenoid valve normally closed contact, slip casting solenoid valve output contact, pulp solenoid valve normally closed contact, the output of pulp solenoid valve connect
Point, vacuum pump normally closed contact, vacuum pump output contact, intake solenoid valve output contact, intake solenoid valve normally closed contact, exhaust electricity
Magnet valve normally closed contact, exhaust solenoid valve output contact, grouting pump output contact, grouting pump normally closed contact.
Preferably, the PLC control circuit include air inlet pressurized control route, pulp control route, gas exhaust inspecting route,
Grout injection control route, mixing control route and vacuumize control route.
Preferably, in the air inlet pressurized control route, air inlet starts switch that normal opened contact, air inlet shutdown switch is normally closed connects
Maximal pressure force value normally closed contact, exhaust solenoid valve normally closed contact set by point, pressure sensor, vacuum pump normally closed contact and into
Pneumoelectric magnet valve output contact concatenation, air inlet start switch normal opened contact and connect intake solenoid valve normal opened contact, form self-keeping circuit.
Preferably, in pulp control route, pulp start switch normal opened contact, pulp shutdown switch normally closed contact,
Stirring motor normally closed contact, pulp solenoid valve normally closed contact, vacuum pump normally closed contact, exhaust solenoid valve normally closed contact and pulp electricity
Magnet valve output contact concatenation, pulp starts switch normal opened contact and pulp solenoid valve is normally opened and connect, and forms self-keeping circuit.
Preferably, in the gas exhaust inspecting route, exhaust is opened minimum set by switch normal opened contact, pressure sensor
Pressure value normally closed contact, intake solenoid valve normally closed contact and exhaust solenoid valve output contact concatenation, exhaust, which is opened, switchs normally opened connect
It minimum liquid level normal opened contact set by point, liquidometer and vacuumizes shutdown switch normal opened contact and connects.
Preferably, in the grout injection control route, minimum liquid level normal opened contact set by liquidometer, into slurry shutdown switch
Normally closed contact, exhaust solenoid valve normally closed contact and slip casting solenoid valve output contact concatenation, start switch normal opened contact, liquid level into slurry
The set minimum liquid level normal opened contact of meter and slip casting solenoid valve normal opened contact simultaneously connect.
Preferably, in the mixing control route, stirring start switch normal opened contact, stirring shutdown switch normally closed contact and
Stirring motor output contact concatenation, stirring start switch normal opened contact and stirring motor normal opened contact and connect to form self-sustaining electricity
Road.
Preferably, described to vacuumize in control route, vacuumizing start switch normal opened contact, to vacuumize shutdown switch normally closed
Contact and vacuum pump output contact concatenation, vacuumizing start switch normal opened contact and vacuum pump normal opened contact simultaneously connect to form self-sustaining
Circuit.
Seen from the above description, the PLC control circuit of mud feeding system provided by the utility model has following beneficial
Effect:
1, it is worked using each executive component of semi-automatic control, is directly controlled on operation panel, it is easy to operate, improve life
Produce efficiency.
2, between each output contact there are mutual lock control, in the output contact of mutual lock control, one of output contact is dynamic
When making, other contacts will not be acted, and prevent maloperation.
2, the liquid level that can automatically detect mud, the automatic sizing material supplementing when reaching low liquid level reach automatic when high liquid level
Stop charging；
3, eliminate mud bubble by stirring and vacuumizing, and prevent from precipitating, in conjunction with air pressure pulp, make the ceramics of production at
Product are not easy to crack, improve ceramic product rate；
5, the pulp by the way of pressure exhaust avoids setting in grout outlet with the open and close of solenoid valve control pulp
When setting out in the mode of stock pump, pulp pump frequent starting the problem of being easily damaged, and overcoming out stock pump and stop, because it is internal used
Property continue to stock, discharging controls not accurate enough problem.
Detailed description of the invention
Fig. 1 is the PLC control circuit schematic diagram of the utility model mud feeding system.
Fig. 2 is the structural schematic diagram of slurry can applied by the PLC control circuit of the utility model mud feeding system.
Fig. 3 is the rearview of Fig. 2.
Fig. 4 is the circuit connection diagram of PLC and slurry can.
Specific embodiment
Below by way of specific embodiment, the utility model will be further described.
The PLC control circuit of this mud feeding system, including PLC, PLC include CPU (processing chip), input unit and defeated
Unit out.
As shown in fig. 1, the PLC control circuit of mud feeding system provided by the utility model and control mode are as follows:
Input relay (input contact) is PLC (outer for connecting and receiving with external input switches with external input point
The terminal of portion's input signal) corresponding internal storage stores basic unit.It is driven by the input signal that outside is sent, and makes it
It is 0 or 1.Output relay (output contact) is PLC and external output point (for connecting with external loading) corresponding inside
Memory storage basic unit.
For mud slurry can, highest liquid level set by liquidometer, minimum liquid level, pressure set by liquidometer are passed
Maximal pressure force value set by sensor, stirring, which start switch, stir shutdown switch, vacuumizing start switchs, vacuumizes stopping opens
Close, pulp starts switch, pulp shutdown switch, start switch into slurry, into slurry shutdown switch, air inlet starts switch, air inlet stops
Switch, exhaust open the corresponding PLC input relay contact ladder of minimal pressure force value set by switch and pressure sensor
Shape schematic symbol respectively indicates are as follows: X0, X1, X2, X3, X4, X5, X6, X7, X10, X11, X12, X13, X14, X15, X16.
Stirring motor, slip casting solenoid valve, pulp solenoid valve, vacuum pump, intake solenoid valve, exhaust solenoid valve on slurry can
With output relay trapezoid chart corresponding to grouting pump are as follows: Y1', Y2', Y3', Y4', Y5', Y6', Y7', Y8'.
Specifically, input unit includes following input contact inside PLC for slurry can:
Minimum liquid level normal opened contact X1 set by highest liquid level normal opened contact X0, liquidometer set by liquidometer, pressure
It is normally closed that maximal pressure force value normally closed contact X2 set by force snesor, stirring start switch normal opened contact X3, stirring shutdown switch
Contact X4, vacuumizing start switch normal opened contact X5, vacuumize shutdown switch normally closed contact X6, pulp starts switch normal opened contact
X7, pulp shutdown switch normally closed contact X10, started switch into slurry normal opened contact X11, into slurry shutdown switch normally closed contact X12, into
Gas starts switch normal opened contact X13, air inlet shutdown switch normally closed contact X14, exhaust unlatching switch normal opened contact X15, pressure and passes
Minimal pressure force value normally closed contact X16 set by sensor.
Output unit includes following output contact inside PLC:
Stirring motor normally closed contact Y1, stirring motor output contact Y1 ', slip casting solenoid valve normally closed contact Y2, slip casting electromagnetism
It is valve output contact Y2 ', pulp solenoid valve normally closed contact Y3, pulp solenoid valve output contact Y3 ', vacuum pump normally closed contact Y4, true
Sky pump output contact Y4 ', intake solenoid valve normally closed contact Y5, intake solenoid valve output contact Y5 ', exhaust solenoid valve normally closed contact
Y6, exhaust solenoid valve output contact Y6 ', grouting pump normally closed contact Y7, grouting pump output contact Y7 '.
Wherein, stirring motor normally closed contact Y1 and stirring motor output contact Y1 ' belongs to a pair of contact mutually to link, stirs
Mixing motor output contact Y1 ' is normal opened contact, and movement is connected when obtaining current potential, while stirring motor normally closed contact Y1 is disconnected, other
Group output contact, such as the control of Y2 and Y2 ', Y3 and Y3 ', Y4 and Y4 ', Y5 and Y5 ', Y6 and Y6 ', Y7 and Y7 ' and Y1 and Y1 '
Mode processed is identical.
The ladder diagram (electric operation control circuit figure) of PLC as shown in figure 4, when the ladder diagram of PLC is read, by from top to bottom, from a left side to
Right progress, PLC internal control route include the instruction of A-F row, are respectively corresponded: A traveling gas pressurized control route, the control of B row pulp
Route, C row gas exhaust inspecting route, D row grout injection control route, E row mixing control route, F row vacuumize control route.
The air inlet pressurization steps of slurry tank correspond to A traveling gas pressurized control route in ladder diagram, and air inlet starts switch normally opened
Contact X13, air inlet shutdown switch normally closed contact X14, maximal pressure force value normally closed contact X2 set by pressure sensor, exhaust electricity
Magnet valve normally closed contact Y6, vacuum pump normally closed contact Y4 and intake solenoid valve output contact Y5 ' concatenation, air inlet start switch normally opened connect
Point X13 simultaneously meets intake solenoid valve normal opened contact Y5, forms self-keeping circuit, and when triggering air inlet starts switch, X13 is connected, air inlet electricity
Magnet valve normal opened contact Y5 movement, executes air inlet pressurization steps；Since intake solenoid valve normal opened contact Y5 connects and is formed feedback,
After X13 is disconnected, route is remained up, and intake solenoid valve output contact Y5 ' is defeated by exhaust solenoid valve output contact Y6 ' and vacuum pump
Contact Y4 ' condition controls out, when exhaust solenoid valve output contact Y6 ' and vacuum pump output contact Y4 ' is acted, exhaust solenoid valve
Normally closed contact Y6 and vacuum pump normally closed contact Y4 is disconnected, and intake solenoid valve output contact Y5 ' is failure to actuate, therefore works as exhaust solenoid valve
Or when vacuum pump work, intake solenoid valve cannot work.
The pulp step of slurry tank corresponds to B row pulp in ladder diagram and controls route, and pulp starts switch normal opened contact X7, goes out
Starch shutdown switch normally closed contact X10, stirring motor normally closed contact Y1, pulp solenoid valve normally closed contact Y3, vacuum pump normally closed contact
The pulp solenoid valve normally closed contact of Y4, exhaust solenoid valve normally closed contact Y6 and pulp solenoid valve output contact Y3 ', No. two slurry cans
Y13 concatenation, pulp start switch normal opened contact X7 and pulp solenoid valve normal opened contact Y3 and connect, and form self-keeping circuit, pulp electricity
Magnet valve output contact Y3 ' by Y1 Y3 Y4 Y6 Y13 (being normally closed contact) condition controlled, Y1 Y3 Y4 Y6 Y13 movement
When, Y3 is failure to actuate.
The slip casting step of slurry tank corresponds to row C row gas exhaust inspecting route and D row grout injection control route in ladder diagram.
In C row gas exhaust inspecting route, minimum pressure set by switch normal opened contact X15, pressure sensor is opened in exhaust
It is worth normally closed contact X16, intake solenoid valve normally closed contact Y5 and exhaust solenoid valve output contact Y6 ' concatenation, and is vented and opens switch
Minimum liquid level normal opened contact X1 set by normal opened contact X15, liquidometer, it vacuumizes shutdown switch normal opened contact X6 and connects, Y3
Movement can be triggered by X7 or X15, and form self-sustaining, exhaust solenoid valve output contact Y6 ' is by intake solenoid valve normally closed contact
The control of Y5 condition, in intake solenoid valve output contact Y5 ' movement, Y6 is failure to actuate.
In D row grout injection control route, minimum liquid level normal opened contact X1 set by liquidometer, into starching, shutdown switch is normally closed to be connect
Point X12, exhaust solenoid valve normally closed contact Y6 and slip casting solenoid valve output contact Y2 ' (or grouting pump output contact Y7 ') concatenation, and
Minimum liquid level normal opened contact X1 set by normal opened contact X11, liquidometer, slip casting solenoid valve normal opened contact Y2 are started switch into slurry
And connect, the movement of grouting pump output contact Y7 ' and slip casting solenoid valve output contact Y2 ' can be triggered by X11 or X1, and pass through Y2
Self-sustaining, grouting pump output contact Y7 ' and slip casting solenoid valve output contact Y2 ' is formed to be controlled by exhaust solenoid valve normally closed contact Y6
System.
The mud de-foaming steps of slurry tank correspond to E row mixing control route and F row in ladder diagram and vacuumize control route.
In E row mixing control route, stirring starts switch normal opened contact X3, stirring shutdown switch normally closed contact X4 and stirs
Motor output contact Y1 ' concatenation is mixed, stirring starts switch normal opened contact X3 and stirring motor normal opened contact Y1 and connects to form self-insurance
Hold circuit.
F row vacuumizes in control route, vacuumizing start switch normal opened contact X5, vacuumizes shutdown switch normally closed contact X6
It is concatenated with vacuum pump output contact Y4 ', vacuumizing start switch normal opened contact X5 and vacuum pump normal opened contact Y4 simultaneously connects to be formed certainly
Holding circuit.Eliminate mud bubble by stirring and vacuumizing, and prevent from precipitating, in conjunction with air pressure pulp, make the ceramics of production at
Product are not easy to crack, improve ceramic product rate.
The PLC control circuit of mud feeding system provided by the utility model has the following beneficial effects:
1, it is worked using each executive component of semi-automatic control, is directly controlled on operation panel, it is easy to operate, improve life
Produce efficiency.
2, between each output contact there are mutual lock control, in the output contact of mutual lock control, one of output contact is dynamic
When making, other contacts will not be acted, and prevent maloperation.
3, the liquid level that can automatically detect mud, the automatic sizing material supplementing when reaching low liquid level reach automatic when high liquid level
Stop charging；
4, eliminate mud bubble by stirring and vacuumizing, and prevent from precipitating, in conjunction with air pressure pulp, make the ceramics of production at
Product are not easy to crack, improve ceramic product rate；
5, the pulp by the way of pressure exhaust avoids setting in grout outlet with the open and close of solenoid valve control pulp
When setting out in the mode of stock pump, pulp pump frequent starting the problem of being easily damaged, and overcoming out stock pump and stop, because it is internal used
Property continue to stock, discharging controls not accurate enough problem.
As shown in Figures 2 to 4, the PLC control circuit of mud feeding system provided by the utility model is stored up for ceramic slurry
The control of tank is starched, which includes tank body 1 and control device, and stirring motor 2, tank body 1 are installed with outside tank body 1
It is internal rotatable equipped with the blender being connect with stirring motor 2, the stirring axis of the blender along vertical direction, blender packet
Agitating shaft and stirring blade (not shown) are included, agitating shaft is connect by multistage retarder with the output end of stirring motor 2, tank body
1 top and bottom are arranged with grouting port 3 and grout outlet 4, and grouting port 3 is connected with a slip casting solenoid valve 5, and grouting port 3 passes through
Pipeline is connected to external mud pit, and grout outlet 4 is connected with a pulp solenoid valve 6, and the top of tank body 1 is additionally provided with vacuum orifice
7, which connects a vacuum pump 8, and tool opening and closing function is had on the vacuum pump 8 vacuumizes solenoid valve (not shown),
It slip casting solenoid valve 5, pulp solenoid valve 6 and vacuumizes electromagnetic valve model that the rich environmentally friendly equipment Co., Ltd, Co., Ltd that splashes can be selected is raw
DMF-Z electromagnetic impulse valve or the DFD series solenoid valve of 441 factories of production etc., 8 model of vacuum pump select wide foreign board XD type single-stage
The top of vacuum pump etc., tank body 1 is equipped with liquid level interface, which is connected with a liquidometer 9, which protrudes into tank
Inside body 1 detect 1 inside mud level of tank body height, the automatic sizing material supplementing when reaching low liquid level, reach high liquid level when from
Dynamic to stop charging, ultrasonic wave or magnetic turning plate formula can be selected in liquidometer 9, specifically, profound board JS-201 magnetism can be selected in liquidometer 9
The models such as the ckyb-001 ultrasonic level gage of turning column liquid level meter Huo Chang Kun instrument are equipped with openable and closable maintenance in the middle part of tank body 1
Door, the feed end of slip casting solenoid valve 5 are connected with a grouting pump 17, and grouting pump 17 is connected to by pipeline with slip casting pond, grouting pump
The RG60-40E type slurry pump of the mine locating hydraulic slip casting machine of board SYB50/50I II or auspicious Shen machine can be selected.
It is additionally provided with air inlet 10 and exhaust outlet 11 at the top of tank body 1, air inlet 10 is connected with one for for inside slurry can
Intake solenoid valve 12 with air pressure capable of being increased, the air inlet 10 of intake solenoid valve 12 connect external pressurized gas source, and exhaust outlet 11 is connected with
One for the exhaust solenoid valve 13 for slurry can internal pressure relief.
Pressure sensor 14 is equipped at the top of tank body 1, for detecting the air pressure inside tank body 1, exhaust outlet 11 and air inlet 10
Respectively it is connected with a pressure gauge.
Control device includes PLC15 and control cabinet 16, and PLC15 is set to inside control cabinet 16, and control cabinet 16 is equipped with:
Stirring for controlling 2 start and stop of stirring motor starts switch and stirs shutdown switch, for controlling vacuumizing for 8 start and stop of vacuum pump
Start switch and vacuumize shutdown switch, for control pulp solenoid valve 6 opening and closing pulp start switch with pulp shutdown switch,
For controlling starting switch into slurry and into slurry shutdown switch, being opened and closed for controlling intake solenoid valve 12 for the opening and closing of slip casting solenoid valve 5
Air inlet start switch with air inlet shutdown switch, for control exhaust solenoid valve 13 opening and closing exhaust open switch and exhaust stop
Switch, each switch can be physical switches, can also be the virtual switch on control panel.
Liquidometer 9, pressure sensor 14, stirring start switch, stir shutdown switch, vacuumizing start switch, vacuumize
Shutdown switch, pulp start switch, pulp shutdown switch, start switch into slurry, start switch into slurry shutdown switch, air inlet, into
Gas shutdown switch, exhaust open switch and exhaust shutdown switch and the input unit interface of PLC15 connects, stirring motor 2, note
Starch the defeated of solenoid valve 5, pulp solenoid valve 6, vacuum pump 8, intake solenoid valve 12, exhaust solenoid valve 13 and grouting pump 17 and PLC15
Unit interface connects out.
It the use of the utility model ceramic slurry slurry can is the method that slip casting is carried out inside plaster cast, manually in control cabinet
Each component opening and closing is controlled on 16, is included the following steps:
Step 1: air inlet is pressurizeed: starting switch control intake solenoid valve 12 by air inlet and open, be vented battery valve at this time and close
It closes, air pressurized is pumped into inside tank body 1 by external air source, provides pressure for slip casting, it is empty that pressure sensor 14 detects 1 top of tank body
Gas air pressure, the highest air pressure that pressure sensor 14 is set may be configured as 4-5 atmospheric pressure according to mud viscosity, when in tank body 1
When portion's air pressure reaches the peak of setting, air inlet shutdown switch controls intake solenoid valve 12 and closes, and stops charged air induction, pressurizeed
Exhaust solenoid valve 13, vacuum pump 8 and pulp solenoid valve 6 remain off in journey.
Step 2: pulp: being started switch by pulp, the control opening and closing of pulp solenoid valve 6 of pulp shutdown switch, out
When starching the opening of solenoid valve 6, mud is discharged from the grout outlet 4 of 1 bottom of tank body, injects under Pipeline transport under the driving of air pressure
Plaster cast.
Step 3: slip casting: liquidometer 9 presets detection highest liquid level and minimum liquid level, highest liquid level are located at tank body 1 five
/ tetra- eminences, minimum liquid level is located at 1/1st five eminence of tank body, when mud level reaches the minimum liquid level of setting in tank body 1,
It first passes through exhaust and opens the opening of switch control exhaust solenoid valve 13, air pressure in tank bodies 1 is waited to be equal to set by pressure sensor most
When low pressure values (atmospheric value of current altitude), exhaust solenoid valve 13 is closed, and stops exhaust, and then, PLC15 controls slip casting electronic
Magnet valve and external grouting pump 17 are opened, and are 1 inside slip casting of tank body, when mud level reaches highest liquid level, PLC15 control
Slip casting solenoid valve and grouting pump 17 are closed, and slip casting is stopped.
Step 4: mud defoams: being opened by vacuumizing start switch control vacuum pump 8, extract the sky inside tank body 1
Gas starts switch control stirring motor 2 by stirring and opens, blender constantly stirs mud and can prevent from sinking at the same time
It forms sediment, vacuumizes while stirring, the air being mixed in mud can be extracted, to improve the quality of mud, prevent pottery produced
Porcelain cracking after defoaming, stops vacuum pump 8 by vacuumizing shutdown switch, stirring shutdown switch control stirring motor 2 stops
Only.
Under normal circumstances, the utility model ceramic slurry slurry can presses above-mentioned steps sequential working, when needed, Mei Gebu
Suddenly it can also be individually performed.
It above are only several specific embodiments of the utility model, but the design concept of the utility model is not limited to
This, all non-essential modifications to the present invention made by this concept should belong to infringement scope of protection of the utility model
Behavior.
Claims (8)
1. a kind of PLC control circuit of mud feeding system, including PLC, the PLC include that CPU, input unit and output are single
Member, it is characterised in that: the input unit of the PLC includes following input contact: highest liquid level set by liquidometer is normally opened
Maximal pressure force value normally closed contact set by minimum liquid level normal opened contact, pressure sensor set by contact, liquidometer, stirring
Start switch that normal opened contact, stirring shutdown switch normally closed contact, vacuumizing start switch normal opened contact, to vacuumize shutdown switch normal
Close contact, pulp starts switch normal opened contact, pulp shutdown switch normally closed contact, into slurry starts switch normal opened contact, stops into slurry
Only switch that normally closed contact, air inlet start switch normal opened contact, air inlet shutdown switch normally closed contact, exhaust open that switch is normally opened to be connect
Minimal pressure force value normally closed contact set by point, pressure sensor；
The output unit of the PLC includes following output contact: stirring motor normally closed contact, stirring motor output contact, note
Starch solenoid valve normally closed contact, slip casting solenoid valve output contact, pulp solenoid valve normally closed contact, pulp solenoid valve output contact, true
Sky pump normally closed contact, vacuum pump output contact, intake solenoid valve output contact, intake solenoid valve normally closed contact, exhaust solenoid valve
Normally closed contact, exhaust solenoid valve output contact, grouting pump output contact, grouting pump normally closed contact.
2. the PLC control circuit of mud feeding system according to claim 1, it is characterised in that: the PLC control circuit
Including air inlet pressurized control route, pulp control route, gas exhaust inspecting route, grout injection control route, mixing control route and pumping
Vacuum control route.
3. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: the air inlet pressurization control
In route processed, air inlet starts switch normal opened contact, air inlet shutdown switch normally closed contact, maximum pressure set by pressure sensor
It is worth normally closed contact, exhaust solenoid valve normally closed contact, vacuum pump normally closed contact and intake solenoid valve output contact concatenation, air inlet starting
Switch normal opened contact simultaneously connects intake solenoid valve normal opened contact, forms self-keeping circuit.
4. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: the pulp control line
Lu Zhong, it is normal that pulp starts switch normal opened contact, pulp shutdown switch normally closed contact, stirring motor normally closed contact, pulp solenoid valve
Contact, vacuum pump normally closed contact, exhaust solenoid valve normally closed contact and pulp solenoid valve output contact concatenation, pulp is closed to start switch
Normal opened contact and pulp solenoid valve are normally opened and connect, and form self-keeping circuit.
5. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: the gas exhaust inspecting line
Lu Zhong, it is normally closed that minimal pressure force value normally closed contact set by switch normal opened contact, pressure sensor, intake solenoid valve are opened in exhaust
Minimum liquid level set by switch normal opened contact, liquidometer is opened in contact and exhaust solenoid valve output contact concatenation, the exhaust
It normal opened contact and vacuumizes shutdown switch normal opened contact and connects.
6. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: the grout injection control line
Lu Zhong, minimum liquid level normal opened contact set by liquidometer, into slurry shutdown switch normally closed contact, exhaust solenoid valve normally closed contact and
Slip casting solenoid valve output contact concatenation, into slurry start switch minimum liquid level normal opened contact set by normal opened contact, liquidometer and
Slip casting solenoid valve normal opened contact simultaneously connects.
7. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: the mixing control line
Lu Zhong, stirring start switch normal opened contact, stirring shutdown switch normally closed contact and stirring motor output contact concatenation, stirring starting
Switch normal opened contact and stirring motor normal opened contact simultaneously connect to form self-hold circuit.
8. the PLC control circuit of mud feeding system according to claim 2, it is characterised in that: described to vacuumize control
In route, vacuumizing start switch normal opened contact vacuumizes shutdown switch normally closed contact and vacuum pump output contact concatenation, takes out true
Sky starts switch normal opened contact and vacuum pump normal opened contact and connects to form self-hold circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215948.9U CN209070351U (en) | 2018-07-30 | 2018-07-30 | A kind of PLC control circuit of mud feeding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215948.9U CN209070351U (en) | 2018-07-30 | 2018-07-30 | A kind of PLC control circuit of mud feeding system |
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| CN209070351U true CN209070351U (en) | 2019-07-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113577916A (en) * | 2021-07-12 | 2021-11-02 | 浙江致远环境科技有限公司 | Preparation process of ceramic composite fiber catalytic filter tube |
-
2018
- 2018-07-30 CN CN201821215948.9U patent/CN209070351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113577916A (en) * | 2021-07-12 | 2021-11-02 | 浙江致远环境科技有限公司 | Preparation process of ceramic composite fiber catalytic filter tube |
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Effective date of registration: 20210413 Address after: No. 122, xunbei East Road, XunZhong Town, Dehua County, Quanzhou City, Fujian Province Patentee after: Fujian KeYue Intelligent Machinery Co.,Ltd. Address before: Desheng Group, Baomei Development Zone, Longxun Town, Dehua County, Quanzhou City, Fujian Province Patentee before: QUANZHOU DEHUA FENGHONG MACHINERY Co.,Ltd. Patentee before: FUJIAN PROVINCE DEHUA TONGXIN CERAMIC Co.,Ltd. |