CN103010755A - PLC-based automatic batch ingredient pneumatic conveying system - Google Patents

PLC-based automatic batch ingredient pneumatic conveying system Download PDF

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Publication number
CN103010755A
CN103010755A CN2013100022218A CN201310002221A CN103010755A CN 103010755 A CN103010755 A CN 103010755A CN 2013100022218 A CN2013100022218 A CN 2013100022218A CN 201310002221 A CN201310002221 A CN 201310002221A CN 103010755 A CN103010755 A CN 103010755A
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valve
plc
control system
air
dust
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CN2013100022218A
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胥红光
姚文
李国军
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Shanghai Maritime University
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Shanghai Maritime University
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Abstract

The invention discloses a PLC (Programmable Logic Controller)-based automatic batch ingredient pneumatic conveying system. The system is characterized by comprising a blower, pressure gauges, safety valves, material level sensors, gate valves, hoses, a delivery pump, butterfly valves, a control system panel, stop valves, dust collectors, target bunkers, air tanks, shunt valves and storage silos, wherein the air tanks are connected with the pressure gages and the dust collectors; the dust collectors are connected with the storage silos; the material level sensors are arranged on the storage silos; the bottoms of the storage silos are connected with the gate valves; the gate valves are connected with the hoses; the hoses are connected with the delivery pump; the delivery pump is connected with the blower; the shunt valves are connected to the dust collectors; the bottoms of the dust collectors are connected to the target bunkers; the safety valves are arranged on the target bunkers; the bottoms of the target bunkers are connected with the butterfly valves and the stop valves; and the control system panel is connected with the blower. According to the invention, the automatic control of the automatic powder batch ingredient pneumatic conveying manufacturing process can be realized, and the work efficiency is improved.

Description

Automatic batch of batching air-transport system based on PLC
Technical field
The present invention relates to a kind of delivery system, particularly relate to a kind of based on PLC(Programmable Logic Controller, programmable logic controller) automatic batch the batching air-transport system.
Background technology
Industrial process is the product stream that is continuous according to the product of its output generally, or discrete batch or discrete quantity, can be divided into continuous flow procedure, batch production process (batch production process) and discrete production process.Batch production process is the process that control step is in order carried out bulk article production.
Abroad, be directed to continuous flow procedure and the DCS control system (being process control system) that produces has been pushed ahead a step widely with Automation of Manufacturing Process.Whether disposed the almost sign of the height of conduct judgement automatization level of DCS control system.Along with the aggravation of global market competition, increasing enterprise need to tackle the supply of material requirement of user's multi-varieties and small-batch.A lot of product needed redesign fast, produce fast, then improve, until typing; This has brought new challenge just for production technology department, needs the fast pressure of delivery of reply; Need the limit design of reply prepattern product, the improved flexible production problem of management in limit.Very fast, the enterprise that is engaged in batch manufacturing just finds, for this intermittent flexible production, has been equipped with the requirement that the DCS system still can't satisfy this production.
At present, oneself batch control software has abroad released one after another, and put in the actual production, realized the in batches automation of control, as: the Simatic Batch of the DeltaV Batch of EmersonProcess company, the InBatch of Wonderware company, Siemens company etc.These batch control software all have the formulation management function, simultaneously the DCS system have been proposed the demand of professional Batch (in batches control).
For domestic, since the reform and opening-up, emerged in large numbers large quantities of middle-size and small-size dirt and produced enterprise.In these enterprises, there are equally large quantities of enterprises with Multi-varieties and Small-batch Production characteristics.In order to promote expanding economy, enhance one's market competitiveness, automatic control level will improve invariably as the means of raising self market competition integration capability in these manufacturing enterprises.Yet the control system pattern that adds the Batch management according to external DCS control need to drop into a large amount of funds.Embarrass most of medium-sized and small enterprises to adopt.By observe many type manufacturing lines (comprising, Tianjin oil chemistry factory, Hunan Paint Factory, the medium and small sized enterprises such as the pharmaceutical factory such as Hubei, Anhui) be not difficult to find, their Automation of Manufacturing Process degree is extremely low, almost completely be the manual operations of labour intensive, inefficiency.
Summary of the invention
Technical matters to be solved by this invention provides a kind of automatic batch of batching air-transport system based on PLC, and it realizes the automation control to the pneumatic conveying process process of automatic batch of batching of powder, increases work efficiency.
The present invention solves above-mentioned technical matters by following technical proposals: a kind of automatic batch of batching air-transport system based on PLC, it is characterized in that, it comprises blower fan, pressure gauge, safety valve, level sensor, gate valve, flexible pipe, transmission pump, butterfly valve, the control system panel, shutoff valve, dust-precipitator, the target feed bin, air holder, shunt valve, storage bin, air holder and pressure gauge, dust-precipitator connects, dust-precipitator is connected with storage bin, level sensor is installed on the storage bin, the bottom of storage bin is connected with gate valve, gate valve is connected with flexible pipe, flexible pipe is connected with transmission pump, the conveying Pumps ﹠ Fans connects, shunt valve is connected with dust-precipitator, and the bottom of dust-precipitator is connected with the target feed bin, and safety valve is installed on the target feed bin, the bottom of target feed bin and butterfly valve, shutoff valve connects, and the control system panel is connected with blower fan.
Preferably, described blower fan, pressure gauge, safety valve, dust-precipitator, level sensor, gate valve, transmission pump, butterfly valve, shutoff valve, shunt valve, target feed bin, storage bin, air holder are all controlled by the control system panel.
Preferably, the operational mode of described blower fan has manually and automatic two kinds of operational modes, and uses Siemens 3RW44 soft initiator to realize the blower fan soft start.
Preferably, described air holder is used for the store compressed air, and pressure gauge is for detection of each storehouse and ducted pressure, and pressure gauge is real-time detects each storehouse and ducted pressure and to control system panel processing data.
Preferably, described dust-precipitator is used for realizing the gas solid separation of strength conveying tail end, and safety valve is used for the pressure size in each storehouse of control, and gate valve is being controlled the discharge of every kind of raw material.
Preferably, described control system panel adopts PLC type control system panel.
Positive progressive effect of the present invention is: the present invention realizes the automation control to the pneumatic conveying process process of automatic batch of batching of powder, increases work efficiency.
Description of drawings
Fig. 1 is the functional block diagram that the present invention is based on the automatic batch of batching air-transport system of PLC.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 1, the automatic batch of batching air-transport system that the present invention is based on PLC comprises blower fan 1, pressure gauge 2, safety valve 3, level sensor 4, gate valve 5, flexible pipe 6, transmission pump 7, butterfly valve 8, control system panel 9, shutoff valve 10, dust-precipitator 11, target feed bin 12, air holder 13, shunt valve 14, storage bin 15, air holder 13 and pressure gauge 2, dust-precipitator 11 connects, dust-precipitator 11 is connected with storage bin 15, level sensor 4 is installed on the storage bin 15, the bottom of storage bin 15 is connected with gate valve 5, gate valve 5 is connected with flexible pipe 6, flexible pipe 6 is connected with transmission pump 7, transmission pump 7 is connected with blower fan 1, shunt valve 14 is connected with dust-precipitator 11, the bottom of dust-precipitator 11 is connected with target feed bin 12, safety valve 3 is installed on the target feed bin 12, the bottom of target feed bin 12 and butterfly valve 8, shutoff valve 10 connects, and control system panel 9 is connected with blower fan 1.
Air holder 13 is used for the store compressed air, and pressure gauge 2 is for detection of each storehouse and ducted pressure, and pressure gauge is real-time detects each storehouse and ducted pressure and to control system panel processing data.Dust-precipitator 11 is used for realizing the gas solid separation of strength conveying tail end.Safety valve 3 is used for the pressure size in each storehouse of control.Gate valve 5 is being controlled the discharge of every kind of raw material.Transmission pump 7 respectively from four raw material cabin feedings and finish batching transmission pump, and then is transferred to one of five target feed bins according to the raw material proportioning in the prescription.Blower fan 1 is implemented under certain barometric pressure the batching gasification of transmission pump inside and evenly mixes, when gasification to a certain degree and after mixing, transmission pump can begin its discharge phase.The operational mode of blower fan has manually and automatic two kinds of operational modes, and uses Siemens 3RW44 soft initiator to realize the blower fan soft start.The elements such as blower fan 1, pressure gauge 2, safety valve 3, level sensor 4, gate valve 5, flexible pipe 6, transmission pump 7, butterfly valve 8, shutoff valve 10, dust-precipitator 11, target feed bin 12, air holder 13, shunt valve 14, storage bin 15 are all controlled by control system panel 9.The control system panel adopts PLC type control system panel, specifically select 315-2 DP type CPU, this CPU be a with in/CPU of extensive procedure quantity and the master/slave interface of PROFIBUS-DP, this CPU can also form the distributed automatization structure except forming centralized I/O structure.It has widely systemic-function characteristic, such as diagnosis, parameter assignment, warning, timing and measurement etc., have in addition expansion flexibly, multipoint interface MPI, diagnosis buffering, non-maintaining advantages such as digital backup.
At the transportation work that transmission pump is finished, the function of transmission pump be according to the raw material proportioning in the prescription respectively from four raw material cabin feedings and transmission pump, finish batching, and then be transferred to one of five target storehouses.Raw material station and Target Station are selected by PLC type control system panel.Transmission pump is provided with the control bits such as system's enable bit, transmission request position and System Halt position, and system is by changing the value of these three control bits, can realize the switching of the states such as operation, transmission, termination of transmission pump.At first in PLC type control system panel, set system operational parameters to transmission pump, shift to an earlier date actuating quantity, charging timing setting value etc. such as import, and give the transmission pump variable prescription information.Specific works situation of the present invention comprises the steps: one, enable position 1 when system, during transmission request position 1, open the discharging indicator lamp, and close load indicator lamp and four imports enable the valves such as indicator lamp and by pass valve, pneumatic ball valve, vacuum breaker, circulation valve, discharge-service valve, bypass disc.Timer HC_BYPASS_OPN_DELAY_TMR in PLC type control system panel is regularly overtime, opens bypass disc; Two, the first inlet feed new field of technical activity, except bypass disc powered on and opens, all the other valves all cut off the power supply and close, all pressure that elimination comes from blower fan, make the pressure minimum to LOAD CELLS, the container weight in the PLC type control system panel is attributed to 0, prepares loading next time.Then, close the discharging indicator lamp, and open the indicator lamp that enables that loads indicator lamp and the first import; Three, in the first import quick feeding stage, HC_INLET_OPEN_DELAY_TMR is overtime when the PLC timer internal, opens first the by pass valve of the first import, opens circulation valve again and closes bypass disc.Then, open the bleeder valve of big material bin, formally begin to load powder this moment.Overtime more than or equal to the timer CB_LOAD_TMR in pneumatic ball valve setting value, the PLC type control system panel when carrying capacity, arrange when filling up slowly warning, HC transmission request or HC system enable signal and changing to zero, this stage finishes; Four, the first import charging stage at a slow speed, close the by pass valve of the first import and open the pneumatic ball valve of the first import, then open vacuum breaker.When the first import carrying capacity moves in advance more than or equal to the first import that setting value, transmission pump level sensor HLS-100-26 detect that transmission pump is full, timer CB_LOAD_TMR in the PLC type control system panel is overtime, this stage end is set when filling up slowly warnings, HC transmission request or HC system enable signal and changing to zero; Five, the first inlet capacity examination phase is closed the pneumatic ball valve of the first import and vacuum breaker, circulation valve, then opens bypass disc; Step 2 repeats four imports to step 5, in case import inspection capacity is finished, enters following step; Six, discharge phase finished when the loading stage, and discharge phase then begins.Open first discharging indicator lamp and the discharge-service valve of transmission pump, and close bypass disc.Timer HC_BYPASS_OPN_DELAY_TMR in PLC type control system panel is overtime, opens bypass disc.Discharge phase stops, and makes system enter loitering phase, and CB_BATCH_COMPLETE is set is 1, and the CB_BATCH_COMPLETE position only has when system's enable bit sets to 0 Shi Caihui and is reset; Seven, the cleaning stage, when a batch batching is terminated, air admission unit enters discharge phase immediately, with cleaning transmission pump and belt conveyor.Pressure drop will can not be restarted the new loading stage to a certain degree.So finish a kind of strength of batching and carried, arranged after a plurality of batching settings, repeated automatic multiple batches of batching and dispensing that above workflow realizes that control system is set.In sum, the present invention realizes the automation control to the pneumatic conveying process process of automatic batch of batching of powder, increases work efficiency.
Suppose to require system to finish three fill a prescription multiple batches of batching and conveyings: before the flow process that starts this system's batching was controlled automatically, the touch-screen (air-transport system automatic control mode) that should pass through in advance the control system panel arranged.Three of target positions in storehouse, the formula number that storehouse arranges is 1, batch is 30; The prescription that No. two storehouses arrange number is 2, batch is 40; The prescription that No. three storehouses arrange number is 3, batch is 50.Raw material cabin quantity is four, four kinds of raw materials that respectively storage batching is required.Then the downloading recipes numbering starts flow process.This service system carries out record to every batch batching real time data, is stored on the control system panel touch-screen SD card with the CSV data file form of Excel, and the user can be read in general computer to the record data of SD and be carried out the analyzing and processing that needs.When the PLC controller was issued transmission pump to storage information, transmission pump and blower fan work began to loop the batching course of conveying of each batch.Carry out at first in order the batching in a storehouse, target storehouse, blower fan and transmission pump are started working, storehouse of raw material cabin begins blowing and enters in the transmission pump, LOAD CELLS in the transmission pump is weighed, when the weight of raw material one reaches requirement, storehouse, target storehouse stops feed, according to such working process, raw material cabin two, three, No. four storehouses are opened successively valve and are carried out same work, carry completely when four kinds of raw materials proportioning as required, the discharge phase of preparing burden is opened the vent valves of transmission pump, batching is transported in the target storehouse one, batching in transmission pump is carried complete, and the vent valves of transmission pump is closed, because to need batch be 30 to storehouse, target storehouse, the above workflow that then circulates is until dispose 30 batches; Carry out successively batching and the conveying of two, No. three prescriptions after the storehouse batching conveying in target storehouse is finished, workflow is consistent with a prescription, so just finishes very efficiently the work that multiple batches of strength is carried.
Above-described embodiment is not as a limitation of the invention, all any modifications of doing within the scope of the invention, is equal to replacement, improvement etc., all belongs to protection scope of the present invention.

Claims (6)

1. one kind based on automatic batch of PLC batching air-transport system, it is characterized in that, it comprises blower fan, pressure gauge, safety valve, level sensor, gate valve, flexible pipe, transmission pump, butterfly valve, the control system panel, shutoff valve, dust-precipitator, the target feed bin, air holder, shunt valve, storage bin, air holder and pressure gauge, dust-precipitator connects, dust-precipitator is connected with storage bin, level sensor is installed on the storage bin, the bottom of storage bin is connected with gate valve, gate valve is connected with flexible pipe, flexible pipe is connected with transmission pump, the conveying Pumps ﹠ Fans connects, shunt valve is connected with dust-precipitator, and the bottom of dust-precipitator is connected with the target feed bin, and safety valve is installed on the target feed bin, the bottom of target feed bin and butterfly valve, shutoff valve connects, and the control system panel is connected with blower fan.
2. as claimed in claim 1 based on automatic batch of PLC batching air-transport system, it is characterized in that described blower fan, pressure gauge, safety valve, dust-precipitator, level sensor, gate valve, flexible pipe, transmission pump, butterfly valve, shutoff valve, receiving filtration device, target feed bin, air holder are all controlled by the control system panel.
3. automatic batch of batching air-transport system based on PLC as claimed in claim 1 is characterized in that the operational mode of described blower fan has manually and automatic two kinds of operational modes, and uses Siemens 3RW44 soft initiator to realize the blower fan soft start.
4. as claimed in claim 1 based on automatic batch of PLC batching air-transport system, it is characterized in that, described air holder is used for the store compressed air, pressure gauge is for detection of each storehouse and ducted pressure, and what pressure gauge was real-time detects each storehouse and ducted pressure and give control system panel processing data.
5. as claimed in claim 1 based on automatic batch of PLC batching air-transport system, it is characterized in that, described dust-precipitator is used for realizing the gas solid separation of strength conveying tail end, and safety valve is used for the pressure size in each storehouse of control, and gate valve is being controlled the discharge of every kind of raw material.
6. automatic batch of batching air-transport system based on PLC as claimed in claim 1 is characterized in that described control system panel adopts PLC type control system panel.
CN2013100022218A 2013-01-04 2013-01-04 PLC-based automatic batch ingredient pneumatic conveying system Pending CN103010755A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104555453A (en) * 2013-10-20 2015-04-29 宁夏嘉翔自控技术有限公司 Electrical and automatic control system for pneumatic conveying system for coal ash
CN104555452A (en) * 2013-10-20 2015-04-29 宁夏嘉翔自控技术有限公司 Electric automatic control system of aginomoto pneumatic transmission system
CN104843448A (en) * 2015-04-22 2015-08-19 天津市实达电力设备有限公司 High-efficiency and energy-saving continuous material conveying system
WO2016116043A1 (en) * 2015-01-21 2016-07-28 珠海优特电力科技股份有限公司 Pneumatic conveying and compounding mechanism
CN110583505A (en) * 2019-09-05 2019-12-20 江西增鑫科技股份有限公司 Automatic control system for feeding in pneumatic conveying mode
CN113562468A (en) * 2021-08-06 2021-10-29 山西金驹煤电化有限责任公司 In-situ one-key starting method for preparing pneumatic conveying system based on reducing agent

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1371375A (en) * 1972-12-20 1974-10-23 Brown R W Pneumatic conveying means
DE3708221A1 (en) * 1987-03-13 1988-09-22 Krupp Polysius Ag Method and apparatus for pneumatically conveying bulk material
CN201520548U (en) * 2009-03-30 2010-07-07 陈健康 Pneumatic pressure delivering device capable of automatic weighing
CN201980761U (en) * 2010-10-08 2011-09-21 王全祥 Dustless pneumatic transmission device for feeding acidized electrolytic manganese

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1371375A (en) * 1972-12-20 1974-10-23 Brown R W Pneumatic conveying means
DE3708221A1 (en) * 1987-03-13 1988-09-22 Krupp Polysius Ag Method and apparatus for pneumatically conveying bulk material
CN201520548U (en) * 2009-03-30 2010-07-07 陈健康 Pneumatic pressure delivering device capable of automatic weighing
CN201980761U (en) * 2010-10-08 2011-09-21 王全祥 Dustless pneumatic transmission device for feeding acidized electrolytic manganese

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104555453A (en) * 2013-10-20 2015-04-29 宁夏嘉翔自控技术有限公司 Electrical and automatic control system for pneumatic conveying system for coal ash
CN104555452A (en) * 2013-10-20 2015-04-29 宁夏嘉翔自控技术有限公司 Electric automatic control system of aginomoto pneumatic transmission system
WO2016116043A1 (en) * 2015-01-21 2016-07-28 珠海优特电力科技股份有限公司 Pneumatic conveying and compounding mechanism
CN104843448A (en) * 2015-04-22 2015-08-19 天津市实达电力设备有限公司 High-efficiency and energy-saving continuous material conveying system
CN110583505A (en) * 2019-09-05 2019-12-20 江西增鑫科技股份有限公司 Automatic control system for feeding in pneumatic conveying mode
CN113562468A (en) * 2021-08-06 2021-10-29 山西金驹煤电化有限责任公司 In-situ one-key starting method for preparing pneumatic conveying system based on reducing agent
CN113562468B (en) * 2021-08-06 2022-11-18 山西金驹煤电化有限责任公司 In-situ one-key starting method for preparing pneumatic conveying system based on reducing agent

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Application publication date: 20130403