CN211917292U

CN211917292U - Simple mixing station control system

Info

Publication number: CN211917292U
Application number: CN201922426488.5U
Authority: CN
Inventors: 高建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-13
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a simple and easy stirring station control system, including connecting respectively in aggregate proportioning machine and the mixer that promotes hopper track both ends, it is used for reciprocating transport aggregate's promotion hopper to be equipped with on the promotion hopper track, the mixer top is equipped with a plurality of dispensing equipment, dispensing equipment includes cement batching bucket, additive batching bucket and batching water tank, cement batching bucket passes through screw conveyer and powder silo intercommunication. The technical proposal of the utility model uses machinery to replace manual operation, the obtained weighing data is more accurate, and the error is reduced; with batching process and mixer seamless connection, closely cooperate, improved the batching precision, simplified the operation, avoided the error. Not only reduces the labor intensity of workers, but also greatly improves the working efficiency.

Description

Simple mixing station control system

Technical Field

The utility model relates to a stirring technical field particularly, relates to simple and easy stirring station control system.

Background

The concrete stirring is an important link of building construction, and the steps are that materials such as sand, stone, cement, water and the like are uniformly mixed according to a preset proportion. Under the condition that no commercial concrete exists, the simple concrete mixing plant can meet the requirements of a construction site.

At present, most simple mixing stations adopt a proportioning machine and a mixer in matching. The two machines operate independently, a plurality of persons are required to cooperate during operation, the general steps are that a batching machine is operated to carry out batching firstly, aggregate weighing and batching are completed, meanwhile, a plurality of bags of cement are required to be poured into a lifting hopper manually, a stirrer is operated to carry out stirring, and the hopper is required to be lifted manually to carry out feeding, water is added manually, and an additive is added into a manual water ladle; and (5) estimating the arrival of the stirring time, and manually unloading a concrete door. Continuously running and repeating the operation.

Under the condition of mass concrete production, long-time running and fatigue operation are inevitable, and misoperation is easy to occur. The production efficiency is reduced, and the construction quality is seriously influenced. Moreover, they are also encumbered by high physical labor.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solve the above problems, and one of the objects of the present invention is to provide a simple control system for a mixing station, so as to reduce the labor intensity of workers and improve the work efficiency.

The embodiment of the utility model is realized like this:

simple and easy stirring station control system, including connecting respectively in aggregate proportioning machine and the mixer that promotes hopper track both ends, it is used for reciprocating transport aggregate's promotion hopper to assemble on the promotion hopper track, the mixer top is equipped with a plurality of dispensing equipment, dispensing equipment includes cement batching bucket, additive batching bucket and batching water tank, cement batching bucket passes through screw conveyer and powder silo intercommunication.

The technical proposal of the utility model uses machinery to replace manual operation, the obtained weighing data is more accurate, and the error is reduced; with batching process and mixer seamless connection, closely cooperate, improved the batching precision, simplified the operation, avoided the error. Not only reduces the labor intensity of workers, but also greatly improves the working efficiency.

In some embodiments of the present invention, the dispensing device is equipped with a weighing device. The weighing equipment comprises an electronic scale with a belt, an electronic scale with powder, an electronic scale with an additive and an electronic scale with water, the mass of the material can be accurately displayed, and errors caused by manual weight estimation are avoided.

In some embodiments of the present invention, it is preferable that the aggregate proportioning machine has 4 storage bins, 4 conveyor belt mechanisms for transporting aggregates, called pound belt for short, are arranged under the storage bins. Preferably, the pound area is equipped with the barrier band all around, and the space that the barrier band formed is used for holding the aggregate, and blocks that the aggregate drops.

In some embodiments of the present invention, it is preferred that the weighing apparatus comprises 4 aggregate weighing sensors installed on the pound belt for reading aggregate weight signals, 3 powder weighing sensors installed on the cement batching bucket for reading fly ash and cement weight signals, 2 additive weighing sensors installed on the additive batching bucket for reading additive weight signals, and 3 water weighing sensors installed on the batching water tank for reading water weight signals.

The utility model discloses an in some embodiments, 4 aggregate weighing sensor installs in pound area four corners, and such distribution makes weighing data accurate, 3 the cement batching bucket is hung to powder weighing sensor lower part, 2 additive weighing sensor lower part hangs additive batching bucket, 3 the batching water tank is hung to water weighing sensor lower part, adopts the mode that hangs to improve the convenience of weighing greatly, saves operating time.

The utility model discloses an in some embodiments, still including being applied to simple and easy stirring station control system's electronic control module, electronic control module includes:

the weighing and metering unit is used for converting signals of a plurality of weighing sensors into 4-20mA current signals by the transmitter after acquiring the signals, and sending the current signals to the PLC through corresponding channels to obtain corresponding weighing values;

the PLC is used for acquiring the value of the weighing and metering unit and the preset value of the human-computer interface, comparing the values and outputting the values;

the human-computer interface is used for continuously displaying the running state of the mixing plant in the display area after acquiring the display signals according to the sequence of the timestamps;

and the power supply unit is used for supplying power to the weighing and metering unit and the human-computer interface.

In the implementation, 4 process controls of batching, feeding, mixing and concrete discharging are mainly carried out in the operation process of the mixing plant, so that the weighing, metering and batching of aggregate, powder, additives and water materials are realized, and the concrete mixing production is completed.

Preparing materials: starting operation, namely firstly batching according to a current formula numerical value preset by a human-computer interface; 4 storage silos 1 of aggregate proportioning machine batching in proper order. After completion, detect lifting hopper 3 position and situation, when spacing, empty fill down, start the electrified motor of pound, drop into the aggregate and promote the hopper. And automatically batching the aggregate in the next tank according to the vehicle-mounted quantity value.

The powder electronic scale, the additive electronic scale and the water electronic scale synchronously weigh, measure and prepare the materials. And waiting for feeding after completion.

Feeding; and after the batching is finished, the PLC detects the stirrer and the condition of the concrete discharging door on the stirrer. When the concrete unloading of the mixer is finished and the concrete unloading door is closed, the lifting hopper 3 is started, the concrete is stopped when the concrete arrives at the upper limit, and the aggregate is automatically put in. The powder electronic scale, the additive electronic scale and the water electronic scale start butterfly valves or start water pumps to correspondingly feed materials. And (4) when the respective feeding time is reached, closing a butterfly valve or a water pump, automatically stopping, referring to the vehicle-mounted quantity value, automatically performing the next tank for batching, and automatically stopping when the vehicle loading quantity is reached.

And when the lifting hopper reaches the retention time, the lifting hopper automatically descends, automatically stops at the lower limit, and circulates in sequence.

Mixing: the charging is completed, the mixer is started and the mixer 4 enters the mixing phase.

Unloading concrete: when the stirring time is up, the concrete discharging door is opened, and the concrete flows into the transport vehicle tank. And when the concrete unloading time is up, closing the concrete unloading door. And circularly executing the next tank of concrete mixing, and automatically stopping when the vehicle load is reached.

Pin X15 of PLC suspend button input, X16 auto run start button, X17 manual/auto run switch button. When the manual operation is switched to the automatic operation, the system is automatically reset. Once power failure or other reasons are failed in automatic operation, the system can automatically recover by switching to manual operation and then switching to automatic operation. Manually operating; the PLC has no output, Y17 is disconnected, JY17 is closed, the PLC output is completely separated from the control circuit, and the button is manually controlled to be connected into the system.

In some embodiments of the utility model, the weighing and metering unit includes a plurality of weighing sensors, every sensor respectively through corresponding changer with PLC connects, a plurality of weighing sensors include aggregate weighing sensor M1, powder weighing sensor M2, additive weighing sensor M3 and water weighing sensor M4, aggregate weighing sensor M1's weighing signal inserts 1 passageway CH1 behind the changer, powder weighing sensor M2's weighing signal inserts 2 passageway CH2 behind the changer, additive weighing sensor M3's weighing signal inserts 3 passageway CH3 behind the changer, water weighing sensor M4's weighing signal inserts 4 passageway CH4 behind the changer; the PLC is connected with a human-computer interface through a communication port, and the output end of the PLC is connected with the alternating current contactor through an intermediate relay; one end of a control button S00-S16 in the manual operation panel is connected with the normally closed relay JY17, and manual/automatic switching is achieved. JY17 is disconnected during automatic operation, a power supply of S00-S16 is cut off, the other ends of control buttons S00-S16 are respectively connected with corresponding intermediate relay coils, each relay coil is connected with a back-pressure protection diode in parallel, one ends of relays JY00-JY16 are correspondingly connected with pins Y0-Y16 of a PLC, a pin Y17 of the PLC is connected with a +24V power supply, and Y17 is closed during automatic operation to connect PLC output. The manual operation is disconnected, and the PLC output is cut off; the other ends of the relays JY00-JY03 respectively drive 4 aggregate storage bin feeding small doors through an alternating current contactor, the other ends of the relays JY04-JY05 respectively drive 2 powder screw conveyors to feed through the alternating current contactor, the other ends of the relays JY06 drive an additive pump to feed through the alternating current contactor, the other ends of the relays JY07 drive a water pump to feed water and mix materials through the alternating current contactor, and pins X0-X13 of the PLC are respectively connected with state switches K1-K13 of each mechanism of the system; X15-X16 of the PLC are respectively and correspondingly connected with automatic operation control buttons S17-S19.

In some embodiments of the present invention, the human-machine interface displays or inputs the related data and status of the mixing plant through an animation model or a report. The human-computer interface mainly comprises the following functions: a main monitoring picture: the operation process of the mixing plant can be monitored in real time and is clear at a glance. An analog quantity setting picture; according to the construction requirement, presetting operation time, and after the operation time is preset, sending a signal to the PLC, wherein the operation can be executed as long as parameters are input at an input end, and the input parameters comprise: the buffer time of the stirrer, the delay time, the track running time of the lifting hopper, the retention time of the lifting hopper, the stirring time of the stirrer, the feeding time, the cement feeding time and the opening time of the concrete discharging door are set. Metering and calibrating; the electronic scale is calibrated and calibrated by using weights or standard weight objects. A recipe management screen; a value of 10 concrete ingredients can be preset. A historical data picture; automatically counting the produced concrete time, the amount of the ingredients and other numerical values.

In some embodiments of the invention, the human-machine interface model is preferably DOP-B10S 411. The model of the PLC is preferably DVP-32, and the model of the transmitter is preferably RW-GT 01A. The model of the analog quantity input module is preferably DVP-04 AD.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

the manual operation is replaced by machinery, so that the obtained weighing data is more accurate, and the error is reduced; with aggregate proportioning machine and mixer seamless connection, closely cooperate, improved the batching precision, simplified the operation, avoided the error. Not only reduces the labor intensity of workers, but also greatly improves the working efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic mechanical structure diagram of a simple mixing station control system according to an embodiment of the present invention;

fig. 2 is a system structure diagram of a simple mixing station control system according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of the ID assignment and the human-computer interface connection relationship of the PLC in the control system of the simple mixing station according to the embodiment of the present invention;

FIG. 4 is a circuit diagram of a weighing and metering unit and a transmitter in the control system of the simple mixing station according to the embodiment of the present invention;

fig. 5 is a main monitoring picture of a human-computer interface in the control system of the simple mixing station of the embodiment of the present invention.

Icon: 1-aggregate proportioning machine, 2-belt weigher, 3-lifting hopper, 4-stirrer, 5-powder weigher, 6-additive weigher, 7-water weigher, 8-screw conveyer, 9-powder silo and 10-lifting hopper track.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to fig. 1, the present embodiment provides a simple mixing station control system, which includes an aggregate batching machine 1 and a mixer 4 respectively connected to two ends of a lifting hopper track 10, wherein a lifting hopper 3 for conveying aggregates back and forth is mounted on the lifting hopper track 10, a plurality of batching devices are mounted on the top of the mixer 4, each batching device includes a cement batching barrel, an additive batching barrel and a batching water tank, and the cement batching barrel is communicated with a powder silo 9 through a screw conveyor 8. The technical proposal of the utility model uses machinery to replace manual operation, the obtained weighing data is more accurate, and the error is reduced; with batching process and 4 seamless connections of mixer, closely cooperate, improved the batching precision, simplified the operation, avoided the error. Not only reduces the labor intensity of workers, but also greatly improves the working efficiency.

In some embodiments of the present invention, the dispensing device is equipped with a weighing device. The batching equipment comprises an electronic scale 2 with a weighing belt, an electronic scale 5 for powder materials, an electronic scale 6 for additives and an electronic scale 7 for water, and can accurately display the mass of materials and avoid errors caused by manual weight estimation.

In some embodiments of the present invention, it is preferable that the aggregate proportioning machine 1 has 4 storage bins, 4 conveyor belt mechanisms for transporting aggregates, called pound belt for short, are arranged under the storage bins. Preferably, the pound area is equipped with the barrier band all around, and the space that the barrier band formed is used for holding the aggregate, and blocks that the aggregate drops.

Example 2

Referring to fig. 2-4, this embodiment provides a simple mixing station control system, in some embodiments of the present invention, the present invention further includes an electronic control module applied to the simple mixing station control system, the electronic control module includes:

the weighing and metering unit is used for converting signals of a plurality of weighing sensors into 4-20mA current signals by the transmitter after acquiring the signals of the weighing sensors, and sending the current signals to the PLC through corresponding channels to obtain corresponding weighing values;

In this embodiment, the electronic control module is applied to a simple mixing station control system, so as to realize automatic operation of equipment on the mixing station. The equipment comprises an aggregate proportioning machine 1, a lifting hopper 3, a powder electronic scale 5, an additive electronic scale 6, a water electronic scale 7 and a stirrer 4. The human-computer interface preferably selects a touch screen, the working condition and numerical value of the picture display system and the touch input parameters, and exchanges data with the PLC in a communication manner to realize human-computer communication, and the PLC executes output to finish the automatic operation of the mixing plant. The aggregate proportioning machine 11 comprises 4 storage bins and a conveyor belt which is conveyed from the bottom of the storage bins, and the conveyor belt is used as a weighing plate to form an aggregate electronic scale, namely a weighing belt. 4 the material is thrown to the pound area respectively to the bin bottom little door of unloading. The pound belt motor is operated to feed aggregate into the elevator hopper 3. The elevator hopper 3 is vertically reciprocated between the mixer 4 and the batching machine by the elevator hopper rail 10, and lifts and drops the aggregate into the mixer 44. The powder electronic scale 5 comprises a cement batching barrel serving as a scale pan and a system to form the powder electronic scale 5, and is connected with 2 independent powder silos 9 through 2 screw conveyors 8 to respectively feed cement or fly ash and feed a butterfly valve at the bottom. The additive electronic scale 6 comprises an additive batching barrel serving as a scale pan and an additive electronic scale 6 consisting of a system, wherein the additive is liquid and is fed by an additive pump, and the bottom valve is used for feeding. The water electronic scale 7 comprises a batching water tank serving as a scale pan and a system to form the water electronic scale 7, and batching/feeding is completed by a feeding water pump and a feeding water pump. The materials are weighed and metered by the system control, and are fed into the stirring station tank in sequence by the execution program. The mixer 4 is used for short for concrete or mortar from the semi-synthetic concrete. When the preset stirring time is up, a small concrete discharging door at the bottom of the stirrer 4 is opened, and the concrete is thrown into the transport vehicle. And when the concrete unloading time is up, closing the small door, waiting for the next tank to mix, executing in a circulating way, automatically stopping when the bearing quantity of the preset transport vehicle, namely the vehicle loading quantity, is reached, and entering a standby state.

Preparing materials: starting operation, namely firstly batching according to a current formula numerical value preset by a human-computer interface; 14 storage silos 1 of aggregate proportioning machine batching in proper order. After completion, the position and condition of the lifting hopper 33 are detected, and when the lifting hopper is at the lower limit and empty, the pound belt motor is started to drop the aggregate into the lifting hopper 3. And automatically batching the aggregate in the next tank according to the vehicle-mounted quantity value.

The powder electronic scale 5, the additive electronic scale 6 and the water electronic scale 7 synchronously carry out weighing, metering and batching. And waiting for feeding after completion.

Feeding; after the batching is finished, the PLC detects the conditions of the concrete discharging doors on the stirring machine 4 and the stirring machine 4. When the concrete unloading of the stirrer 4 is finished and the concrete unloading door is closed, the lifting hopper 33 is started, the aggregate is automatically put in when the lifting hopper reaches the upper limit and stops. The powder electronic scale 5, the additive electronic scale 6 and the water electronic scale 7 open a butterfly valve or start a water pump, and correspondingly feed. And (4) when the respective feeding time is reached, closing a butterfly valve or a water pump, automatically stopping, referring to the vehicle-mounted quantity value, automatically performing the next tank for batching, and automatically stopping when the vehicle loading quantity is reached.

And the lifting hopper 3 automatically descends after reaching the retention time, automatically stops at the lower limit, and sequentially circulates.

Mixing: the batch is complete, blender 4 is started and blender 44 enters the blending phase.

In some embodiments of the utility model, the weighing and metering unit includes a plurality of weighing sensors, every sensor respectively through corresponding changer with PLC connects, a plurality of weighing sensors include aggregate weighing sensor M1, powder weighing sensor M2, additive weighing sensor M3 and water weighing sensor M4, aggregate weighing sensor M1's weighing signal inserts 1 passageway CH1 behind the changer, powder weighing sensor M2's weighing signal inserts 2 passageway CH2 behind the changer, additive weighing sensor M3's weighing signal inserts 3 passageway CH3 behind the changer, water weighing sensor M4's weighing signal inserts 4 passageway CH4 behind the changer; the PLC is connected with a human-computer interface through a communication port, and the output end of the PLC is connected with the alternating current contactor through an intermediate relay; one end of a control button S00-S16 in the manual operation panel is connected with the normally closed relay JY17, and manual/automatic switching is achieved. JY17 is disconnected during automatic operation, a power supply of S00-S16 is cut off, the other ends of control buttons S00-S16 are respectively connected with corresponding intermediate relay coils, each relay coil is connected with a back-pressure protection diode in parallel, one ends of relays JY00-JY16 are correspondingly connected with pins Y0-Y16 of a PLC, a pin Y17 of the PLC is connected with a +24V power supply, and Y17 is closed during automatic operation to connect PLC output. The manual operation is disconnected, and the PLC output is cut off; the other ends of the relays JY00-JY03 respectively drive 4 aggregate storage bin feeding small doors through an alternating current contactor, the other ends of the relays JY04-JY05 respectively drive 2 powder screw conveyors 8 to feed through the alternating current contactor, the other ends of the relays JY06 drive an additive pump to feed through the alternating current contactor, the other ends of the relays JY07 drive a water pump to feed water and prepare materials through the alternating current contactor, and pins X0-X13 of the PLC are respectively connected with state switches K1-K13 of each mechanism of the system; X15-X16 of the PLC are respectively and correspondingly connected with automatic operation control buttons S17-S19.

In some embodiments of the present invention, the human-machine interface displays or inputs the related data and status of the mixing plant through an animation model or a report. The human-computer interface mainly comprises the following functions: a main monitoring picture: the operation process of the mixing plant can be monitored in real time and is clear at a glance. An analog quantity setting picture; according to the construction requirement, presetting operation time, and after the operation time is preset, sending a signal to the PLC, wherein the operation can be executed as long as parameters are input at an input end, and the input parameters comprise: buffer time, delay time, operation time of a lifting hopper track 10, residence time of a lifting hopper 3, stirring time of a stirrer 4, feeding time, cement feeding time and opening time of a concrete discharging door are set. Metering and calibrating; the electronic scale is calibrated and calibrated by using weights or standard weight objects. A recipe management screen; a value of 10 concrete ingredients can be preset. A historical data picture; automatically counting the produced concrete time, the amount of the ingredients and other numerical values.

In summary, the embodiment of the utility model provides a simple mixing station control system, uses machinery to replace manual operation, and the weighing data obtained is more accurate, reduces the error; with aggregate proportioning machine 11 and mixer 44 seamless connection, closely cooperate, improved the batching precision, simplified the operation, avoided the error. Not only reduces the labor intensity of workers, but also greatly improves the working efficiency.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The simple mixing station control system is characterized by comprising an aggregate batching machine and a mixer which are respectively connected to two ends of a lifting hopper track, wherein the lifting hopper for conveying aggregates in a reciprocating manner is assembled on the lifting hopper track, a plurality of batching devices are assembled at the top of the mixer, each batching device comprises a cement batching barrel, an additive batching barrel and a batching water tank, and the cement batching barrels are communicated with a powder silo through a screw conveyor; weighing equipment is assembled on each batching equipment; the aggregate proportioning machine comprises 4 storage bins, and 4 pound belts used for weighing, metering and transporting aggregates are arranged under the storage bins.

2. The easy mixing station control system of claim 1, wherein the weighing device comprises an electronic scale.

3. The simple mixing station control system of claim 1 wherein the weighing device comprises 4 aggregate weighing sensors mounted on the weigh belt for reading aggregate weighing signals, 3 powder weighing sensors mounted on the cement batching bucket for reading fly ash and cement weight signals, 2 additive weighing sensors mounted on the additive batching bucket for reading additive weight signals, and 3 water weighing sensors mounted on the batching water tank for reading water weight signals.

4. The control system of claim 3, wherein 4 aggregate weighing sensors are installed at four corners of the weighing belt, 3 cement batching tanks are hung below the powder weighing sensors, 2 additive batching tanks are hung below the additive weighing sensors, and 3 batching water tanks are hung below the water weighing sensors.

5. The simple mixing station control system of claim 1, further comprising an electronic control module applied to the simple mixing station control system, wherein the electronic control module comprises:

the weighing and metering unit is used for acquiring signals of a plurality of weighing sensors, converting the signals into 4-20mA current signals by the transmitter, sending the current signals into the PLC through a channel corresponding to the analog input module to obtain corresponding weighing numerical values,

6. The simple mixing station control system of claim 5, wherein the weighing and metering unit comprises a plurality of weighing sensors, each sensor is connected with the PLC through a corresponding transmitter, each weighing sensor comprises an aggregate weighing sensor M1, a powder weighing sensor M2, an additive weighing sensor M3 and a water weighing sensor M4, a weighing signal of the aggregate weighing sensor M1 is transmitted through the transmitter and then is connected to the channel CH1, a weighing signal of the powder weighing sensor M2 is transmitted through the transmitter and then is connected to the channel CH2, a weighing signal of the additive weighing sensor M3 is transmitted through the transmitter and then is connected to the channel CH3, and a weighing signal of the water weighing sensor M4 is transmitted through the transmitter and then is connected to the channel CH 4; the PLC is connected with a human-computer interface through a communication port, and the output end of the PLC is connected with the alternating current contactor through an intermediate relay; one end of a control button S00-S16 in a manual operation panel is connected with a normally closed relay JY17 to realize manual/automatic switching, JY17 is disconnected during automatic operation, S00-S16 power supply is cut off, the other ends of the control buttons S00-S16 are respectively connected with corresponding intermediate relay coils, each relay coil is connected with a back-pressure protection diode in parallel, one ends of the relays JY00-JY16 are correspondingly connected with pins Y0-Y16 of the PLC, the pin Y17 of the PLC is connected with a +24V power supply, Y17 is closed during automatic operation to connect PLC output, and the PLC output is disconnected during manual operation to cut off the PLC output; the other ends of the relays JY00-JY03 respectively drive 4 aggregate storage bin feeding small doors through an alternating current contactor, the other ends of the relays JY04-JY05 respectively drive 2 powder screw conveyors to feed through the alternating current contactor, the other ends of the relays JY06 drive an additive pump to feed through the alternating current contactor, the other ends of the relays JY07 drive a water pump to feed water and mix materials through the alternating current contactor, and pins X0-X13 of the PLC are respectively connected with state switches K1-K13 of each mechanism of the system; X15-X16 of the PLC are respectively and correspondingly connected with automatic operation control buttons S17-S19.

7. The drop-in mixing station control system of claim 5, wherein the display area of the human-machine interface has an animated mixing station model.

8. The SIMPLE STIRRER STATION CONTROL SYSTEM OF claim 5, wherein the HMI is DOP-B10S411, the PLC is DVP-32, and the transmitter is RW-GT 01A.