CN106705671A - Sintering machine material layer thickness control device based on radar detection technology - Google Patents

Sintering machine material layer thickness control device based on radar detection technology Download PDF

Info

Publication number
CN106705671A
CN106705671A CN201510773148.3A CN201510773148A CN106705671A CN 106705671 A CN106705671 A CN 106705671A CN 201510773148 A CN201510773148 A CN 201510773148A CN 106705671 A CN106705671 A CN 106705671A
Authority
CN
China
Prior art keywords
thickness
sintering machine
controller
displacement transducer
group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201510773148.3A
Other languages
Chinese (zh)
Inventor
盛小玲
张维佳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing City Fuling Three Sea Lanling Co Ltd
Original Assignee
Chongqing City Fuling Three Sea Lanling Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing City Fuling Three Sea Lanling Co Ltd filed Critical Chongqing City Fuling Three Sea Lanling Co Ltd
Priority to CN201510773148.3A priority Critical patent/CN106705671A/en
Publication of CN106705671A publication Critical patent/CN106705671A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/0028Devices for monitoring the level of the melt

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a sintering machine material layer thickness control device, in particular to a sintering machine material layer thickness control device based on a radar detection technology. The sintering machine material layer thickness control device comprises a set of radar level gauge, a material layer thickness transmitter, a material layer thickness calculating computer, a speed adjusting unit, a main feeding gate displacement transmitter, a main feeding gate controller, an auxiliary feeding gate displacement transmitter set, an auxiliary feeding gate controller, a speed transmitter, a frequency conversion speed adjusting controller, a round roller feeder speed sensor, a main feeding gate displacement sensor, an auxiliary feeding gate displacement sensor set, a human-computer interface and a control cabinet. The sintering machine material layer thickness control device solves the problem of how to well control the material layer thickness of a sintering machine (trolley) and solves the problem existing in control over the material layer thickness of the sintering machine, the sintering machine material layer thickness control device is provided, and performance indexes of the cold-state strength, the hot-state strength, the yield, the quality, the ferrous oxide content, the reducing property, the fuel consumption and the like of sintered ore are improved.

Description

Device for controlling batch layer thickness of sintering machine based on radar detection technique
Technical field
The present invention relates to device for controlling batch layer thickness of sintering machine, particularly a kind of device for controlling batch layer thickness of sintering machine based on radar detection technique.
Background technology
Sintering plant is the important component of integrated iron and steel works, it is responsible for the preparation and supply of the main iron-bearing material of iron-smelter, sintering plant is big to the treating capacity of material, accounts for the second of integrated iron and steel works, therefore carries out sintering plant design integrated iron and steel works are significant.And sintering machine (chassis) thickness of feed layer more has its important practical significance, cold strength, hot strength, Yield and quality, ferrous oxide content, reducing property, Fuel Consumption of thickness of feed layer influence sintering deposit etc. as the leading indicator of SINTERING PRODUCTION.
The auto accumulation heat effect of deep-bed sintering, deep-bed sintering is used big-and-middle-sized design of sinter machine can reduce firing rate more, strengthen the oxidizing atmosphere of sinter layer, and the content reduction of ferrous oxide in sintering deposit, reproducibility improves.Meanwhile, few refuelling can largely form the high-strength sintered ore deposit with needle-like calcium ferrite as main binding phase again, sinter strength is improved.Further, since being deep-bed sintering, it is difficult to which burned top layer sintering deposit quantity is reduced, and yield rate is improved.Therefore, it is appropriate to the occasion equal to or more than 580mm using pellet sintering method based on iron ore concentrate, it is appropriate to the occasion equal to or more than 650mm based on fine iron ore.
The rotating speed of fabric thickness and round roller batcher, gate aperture and sintering pallet speed are relevant on sintering pallet.And sintering pallet speed is determined according to the position of sintering end point, therefore to ensure sintering pallet thickness of feed layer, must just control the rotating speed and gate aperture of round roller batcher.
In sum, how to control sintering machine (chassis) thickness of feed layer is the problem that each sintering plant is required for solving.
The content of the invention
The purpose of the present invention is to overcome problem present in batch layer thickness of sintering machine control described above, a kind of device for controlling batch layer thickness of sintering machine based on radar detection technique is provided, the performance indications such as cold strength, hot strength, Yield and quality, ferrous oxide content, reducing property, the Fuel Consumption of sintering deposit are improved.
The purpose of the present invention is realized by following technical proposals.
Device for controlling batch layer thickness of sintering machine based on radar detection technique of the invention,It is characterized in that including one group of radar level gauge,The thickness of feed layer transmitter group being connected with this radar level gauge group,The thickness of feed layer computing controller being connected with this thickness of feed layer degree transmitter group,The speed regulation unit being connected with this thickness of feed layer computing controller respectively,Main gate displacement transducer,Main gate controller,Auxiliary gate displacement transducer group,Auxiliary gate controller,The velocity transducer being connected with this speed regulation unit respectively,Variable-frequency speed-regulating controller,The round roller batcher velocity sensor being connected with this velocity transducer,This variable-frequency speed-regulating controller is connected with the motor of round roller batcher,The main gate displacement transducer being connected with this main gate displacement transducer,Each auxiliary gate displacement transducer being connected with this auxiliary gate displacement transducer group,The man-machine interface being connected with described thickness of feed layer computing controller,This main gate controller is connected with sintering machine main gate hydraulic system,This auxiliary gate controller is connected with auxiliary gate hydraulic system,Described radar level gauge group is arranged on the top of sintering pallet feed end,Main gate displacement transducer is arranged on the Electrohydraulic push rod of main gate,Auxiliary gate displacement transducer group is arranged on the Electrohydraulic push rod of each auxiliary gate.
Described thickness of feed layer transmitter group, thickness of feed layer computing controller, main gate displacement transducer, auxiliary gate displacement transducer group, man-machine interface are arranged in switch board, and this switch board is set at the scene or in switchgear house.
Batch layer thickness of sintering machine control includes longitudinally controlled and crosswise joint.Longitudinally controlled to be the rotating speed by adjusting round roller batcher or main shutter aperture control feeding coal, and to adjust thickness of feed layer, crosswise joint is to control horizontal discharge quantity by aiding in the aperture of gate, to meet the requirement of the laterally homogeneous cloth of chassis.
Described radar level gauge group, thickness of feed layer transmitter group, thickness of feed layer computing controller, speed regulation unit, main gate displacement transducer, main gate controller, velocity transducer, variable-frequency speed-regulating controller, round roller batcher velocity sensor, main gate displacement transducer, main gate hydraulic system composition sintering machine longitudinal direction thickness of feed layer control device.
Described radar level gauge group, thickness of feed layer transmitter group, thickness of feed layer computing controller, auxiliary gate displacement transducer group, auxiliary gate controller, auxiliary gate displacement transducer group auxiliary gate hydraulic system composition sintering machine transverse direction thickness of feed layer control device.
Described thickness of feed layer computing controller is PLC, and this PLC is provided with CPU module, digital quantity input module, digital output module, Analog input mModule, analog output module, the communication module being connected with this CPU module respectively.
Described radar level gauge is VEGA, OPTECH or E+H radar level gauge.
Described PLC is the PLC of SIEMENS, SCHNEIDER or ROCKWELL brand.
The operation principle of device for controlling batch layer thickness of sintering machine that sintering machine of the invention is based on radar detection technique is:The rotating speed of round roller batcher is detected by velocity sensor, round roller batcher speed setting value is determined by sintering pallet speed setting value, this tach signal is made comparisons by sending into speed regulation unit after velocity transducer treatment with this speed setting value, speed regulation unit sends speed control signal by calculating, and this control signal is sent to variable-frequency speed-regulating controller and goes to control the motor rotating speed of round roller batcher;Thickness of feed layer setting value is input into thickness of feed layer computing controller by man-machine interface, sintering pallet thickness of feed layer is detected by radar level gauge group, this thickness signal is sent into after expecting that thick transmitter group is processed and expects that thick computing controller is made comparisons after reprocessing with thickness of feed layer setting value, and the thick computing controller of material is by calculating main gate aperture setting value and each auxiliary gate aperture setting value;Round roller batcher tach signal and speed setting value are input into thickness of feed layer computing controller by speed regulation unit, this tach signal is made comparisons with this speed setting value, and thickness of feed layer computing controller is by calculating main gate aperture set point correct value;The displacement i.e. gatage of main gate Electrohydraulic push rod is detected by displacement transducer, this displacement signal is made comparisons by sending into the thick computing controller of material after displacement transducer treatment with main gate aperture set point correct value, the thick computing controller of material sends displacement control signal by calculating, this control signal is sent to main gate controller and goes to control main gate regulation of hydraulic system gatage, completes longitudinal thickness of feed layer control;The displacement i.e. gatage of each auxiliary gate Electrohydraulic push rod is detected by displacement transducer group, this a little displacement signal aids in gate aperture setting value to make comparisons by sending into the thick computing controller of material after the treatment of displacement transducer group with each, the thick computing controller of material sends each displacement control signal by calculating, this a little control signal is sent to each auxiliary gate controller and goes control auxiliary gate regulation of hydraulic system gatage, completes horizontal thickness of feed layer control.
Man-machine interface:For realizing good in interactive function, from touch-screen.Use graphics system display system state, operating system.
The device for controlling batch layer thickness of sintering machine that sintering machine of the invention is based on radar detection technique solves the problems, such as how to control sintering machine (chassis) thickness of feed layer, overcome problem present in batch layer thickness of sintering machine control, a kind of device for controlling batch layer thickness of sintering machine is provided, the performance indications such as cold strength, hot strength, Yield and quality, ferrous oxide content, reducing property, the Fuel Consumption of sintering deposit are improved.
Brief description of the drawings
Fig. 1 is structured flowchart of the invention.Alphabetical designation in figure is represented respectively;SE- velocity sensors;ST- velocity transducers;VVVF- variable-frequency speed-regulating controllers;M- round roller batcher motors;The main gate displacement transducers of XE1-;The main gate displacement transducers of XT1-;The main gate controllers of ZC1-;XE2- aids in gate displacement transducer group;XT2- aids in gate displacement transducer group;ZC2- aids in gate controller;LE- radar level gauge groups;LT- thickness of feed layer transmitter groups;The thick computing controller of LIC- material;SIC- speed regulation units;The thick setting value of L- material;S- round roller speed setting values.
Specific embodiment
Specific embodiment of the invention is illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1,Sintering machine of the invention is based on the device for controlling batch layer thickness of sintering machine of radar detection technique,It is characterized in that including one group of radar level gauge LE,The thickness of feed layer transmitter group LT being connected with this radar level gauge group LE,The thickness of feed layer computing controller LIC being connected with this thickness of feed layer transmitter group LT,The speed regulation unit SIC being connected with this thickness of feed layer computing controller LIC respectively,Main gate displacement transducer XT1,Main gate controller ZC1,Auxiliary gate displacement transducer group XT2,Auxiliary gate controller ZC2,The velocity transducer ST being connected with this speed regulation unit SIC respectively,Variable-frequency speed-regulating controller VVVF,The round roller batcher velocity sensor SE being connected with this velocity transducer ST,This variable-frequency speed-regulating controller VVVF is connected with the motor M of round roller batcher,The main gate displacement transducer XE1 being connected with this main gate displacement transducer XT1,The auxiliary gate displacement transducer group XE2 being connected with this auxiliary gate displacement transducer group XT2,The man-machine interface being connected with described thickness of feed layer computing controller,This main gate controller is connected with sintering machine main gate hydraulic system,This auxiliary gate controller is connected with auxiliary gate hydraulic system,Described radar level gauge group LE is arranged on the top of sintering pallet feed end,Main gate displacement transducer XE1 is arranged on the Electrohydraulic push rod of main gate,Auxiliary gate displacement transducer group XE2 is arranged on the Electrohydraulic push rod of each auxiliary gate.
Described thickness of feed layer transmitter group LT, thickness of feed layer computing controller LIC, main gate displacement transducer XT1, auxiliary gate displacement transducer group XT2, man-machine interface are arranged in switch board, interior shown as dashed, this switch board is set at the scene or in switchgear house.
Described radar level gauge group LE, thickness of feed layer transmitter group LT, thickness of feed layer computing controller LIC, speed regulation unit SIC, main gate displacement transducer XT1, main gate controller ZC1, velocity transducer ST, variable-frequency speed-regulating controller VVVF, round roller batcher velocity sensor SE, main gate displacement transducer XE1, main gate hydraulic system composition sintering machine longitudinal direction thickness of feed layer control device.
Described radar level gauge group LE, thickness of feed layer pick-up send device group LT, thickness of feed layer computing controller LIC, auxiliary gate displacement transducer group XT2, auxiliary gate controller group ZC2, auxiliary gate displacement transducer group XE2, auxiliary gate controller group ZC2, auxiliary gate hydraulic system to constitute sintering machine transverse direction thickness of feed layer control device.
Described thickness of feed layer computing controller LIC is PLC, and this PLC is provided with CPU module, digital quantity input module, digital output module, Analog input mModule, modulus plan output module, the communication module being connected with this CPU module respectively.
Described radar level gauge LE is VEGA, OPTECH or E+H radar level gauge.
Described PLC is the PLC of SIEMENS, SCHNEIDER or ROCKWELL brand.
The operation principle of device for controlling batch layer thickness of sintering machine that sintering machine of the invention is based on radar detection technique is:The rotating speed of round roller batcher is detected by velocity sensor, round roller batcher speed setting value is determined by sintering pallet speed setting value, this tach signal is made comparisons by sending into speed regulation unit after velocity transducer treatment with this speed setting value, speed regulation unit sends speed control signal by calculating, and this control signal is sent to variable-frequency speed-regulating controller and goes to control the motor rotating speed of round roller batcher;Thickness of feed layer setting value is input into thickness of feed layer computing controller by man-machine interface, sintering pallet thickness of feed layer is detected by radar level gauge group, this thickness signal is sent into after expecting that thick transmitter group is processed and expects that thick computing controller is made comparisons after reprocessing with thickness of feed layer setting value, and the thick computing controller of material is by calculating main gate aperture setting value and each auxiliary gate aperture setting value;Round roller batcher tach signal and speed setting value are input into thickness of feed layer computing controller by speed regulation unit, this tach signal is made comparisons with this speed setting value, and thickness of feed layer computing controller is by calculating main gate aperture set point correct value;The displacement i.e. gatage of main gate Electrohydraulic push rod is detected by displacement transducer, this displacement signal is made comparisons by sending into the thick computing controller of material after displacement transducer treatment with main gate aperture set point correct value, the thick computing controller of material sends displacement control signal by calculating, this control signal is sent to main gate controller and goes to control main gate regulation of hydraulic system gatage, completes longitudinal thickness of feed layer control;The displacement i.e. gatage of each auxiliary gate Electrohydraulic push rod is detected by displacement transducer group, this a little displacement signal aids in gate aperture setting value to make comparisons by sending into the thick computing controller of material after the treatment of displacement transducer group with each, the thick computing controller of material sends each displacement control signal by calculating, this a little control signal is sent to each auxiliary gate controller and goes control auxiliary gate regulation of hydraulic system gatage, completes horizontal thickness of feed layer control.
The device for controlling batch layer thickness of sintering machine that sintering machine of the invention is based on radar detection technique solves the problems, such as how to control sintering pallet thickness of feed layer, overcome problem present in batch layer thickness of sintering machine control, a kind of device for controlling batch layer thickness of sintering machine is provided, the performance indications such as cold strength, hot strength, Yield and quality, ferrous oxide content, reducing property, the Fuel Consumption of sintering deposit are improved.

Claims (6)

1. a kind of device for controlling batch layer thickness of sintering machine based on radar detection technique,It is characterized in that including one group of radar level gauge,The thickness of feed layer transmitter group being connected with this group of radar level gauge,The thickness of feed layer computing controller being connected with this thickness of feed layer degree transmitter group,The speed regulation unit being connected with this thickness of feed layer computing controller respectively,Main gate displacement transducer,Main gate controller,Auxiliary gate displacement transducer group,Auxiliary gate controller,The velocity transducer being connected with this speed regulation unit respectively,Variable-frequency speed-regulating controller,The round roller batcher velocity sensor being connected with this velocity transducer,This variable-frequency speed-regulating controller is connected with the motor of round roller batcher,The main gate displacement transducer being connected with this main gate displacement transducer,Each auxiliary gate displacement transducer being connected with this auxiliary gate displacement transducer group,The man-machine interface being connected with described thickness of feed layer computing controller,This main gate controller is connected with sintering machine main gate hydraulic system,This auxiliary gate controller is connected with auxiliary gate hydraulic system,Described radar level gauge group is arranged on the top of sintering pallet feed end,Main gate displacement transducer is arranged on the Electrohydraulic push rod of main gate,Auxiliary gate displacement transducer group is arranged on the Electrohydraulic push rod of each auxiliary gate.
2. the device for controlling batch layer thickness of sintering machine based on radar detection technique according to claim 1, it is characterized in that described thickness of feed layer transmitter group, thickness of feed layer computing controller, main gate displacement transducer, auxiliary gate displacement transducer group, man-machine interface are arranged in switch board, this switch board is set at the scene or in switchgear house.
3. the device for controlling batch layer thickness of sintering machine based on radar detection technique according to claim 1, it is characterised in that described radar level gauge group, thickness of feed layer transmitter group, thickness of feed layer computing controller, speed regulation unit, main gate displacement transducer, main gate controller, velocity transducer, variable-frequency speed-regulating controller, round roller batcher velocity sensor, main gate displacement transducer, main gate hydraulic system constitute sintering machine longitudinal direction thickness of feed layer control device.
4. the device for controlling batch layer thickness of sintering machine based on radar detection technique according to claim 1, it is characterised in that described radar level gauge group, thickness of feed layer transmitter group, thickness of feed layer computing controller, auxiliary gate displacement transducer group, auxiliary gate controller, auxiliary gate displacement transducer group, auxiliary gate hydraulic system constitute sintering machine transverse direction thickness of feed layer control device.
5. the device for controlling batch layer thickness of sintering machine based on radar detection technique according to claim 1, it is characterized in that described thickness of feed layer computing controller is PLC, this PLC is provided with CPU module, digital quantity input module, digital output module, Analog input mModule, analog output module, the communication module being connected with this CPU module respectively.
6. the device for controlling batch layer thickness of sintering machine based on radar detection technique according to claim 4, it is characterised in that described thickness of feed layer transmitter and the output signal of displacement transducer are standard 4~20mA signals.
CN201510773148.3A 2015-11-13 2015-11-13 Sintering machine material layer thickness control device based on radar detection technology Withdrawn CN106705671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510773148.3A CN106705671A (en) 2015-11-13 2015-11-13 Sintering machine material layer thickness control device based on radar detection technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510773148.3A CN106705671A (en) 2015-11-13 2015-11-13 Sintering machine material layer thickness control device based on radar detection technology

Publications (1)

Publication Number Publication Date
CN106705671A true CN106705671A (en) 2017-05-24

Family

ID=58918325

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510773148.3A Withdrawn CN106705671A (en) 2015-11-13 2015-11-13 Sintering machine material layer thickness control device based on radar detection technology

Country Status (1)

Country Link
CN (1) CN106705671A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108507353A (en) * 2018-04-04 2018-09-07 北京佰能盈天科技股份有限公司 The material thickness adjusting method of belt pellet roasting machine
CN109724410A (en) * 2017-10-30 2019-05-07 中冶长天国际工程有限责任公司 Sintering machine material thickness detector
CN110657681A (en) * 2019-10-11 2020-01-07 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN110657680A (en) * 2019-10-11 2020-01-07 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN110686512A (en) * 2019-10-11 2020-01-14 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN113503737A (en) * 2021-07-20 2021-10-15 山信软件股份有限公司 Material layer thickness control method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109724410A (en) * 2017-10-30 2019-05-07 中冶长天国际工程有限责任公司 Sintering machine material thickness detector
CN108507353A (en) * 2018-04-04 2018-09-07 北京佰能盈天科技股份有限公司 The material thickness adjusting method of belt pellet roasting machine
CN108507353B (en) * 2018-04-04 2020-01-10 北京佰能盈天科技股份有限公司 Material thickness adjusting method of belt type pellet roasting machine
CN110657681A (en) * 2019-10-11 2020-01-07 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN110657680A (en) * 2019-10-11 2020-01-07 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN110686512A (en) * 2019-10-11 2020-01-14 湖南长天自控工程有限公司 Sintering machine material distribution control system and method
CN113503737A (en) * 2021-07-20 2021-10-15 山信软件股份有限公司 Material layer thickness control method

Similar Documents

Publication Publication Date Title
CN106705671A (en) Sintering machine material layer thickness control device based on radar detection technology
CN101738089A (en) Device for controlling batch layer thickness of sintering machine based on radar detection technique
CN201621961U (en) Sintering machine material bed thickness control device based on radar detection technology
CN102967150B (en) Energy-saving and environment-friendly feeding control system for vertical laterite-nickel ore smelting furnace controlled by PLC
CN105522124A (en) Automatic inoculant charging system of casting production line
CN207507543U (en) A kind of high-pressure roller mill intelligent hydraulic feeding system
CN205257378U (en) Weightless formula constant current feed equipment of tombarthite electrolytic furnace
CN202193465U (en) Sintering mixing bunker uniform distribution control device based on radar detecting technology
CN203473864U (en) Distributing bin automatic switching device for sintering production
CN103818700A (en) Furnace burden conveying device
CN201785421U (en) Blast furnace distribution control system
CN203402666U (en) Mechanism for conveying and storing complex fiber blank sheets
CN206451044U (en) A kind of control system of asphalt mixing plant finished bin
CN101968316A (en) Automatic loading control device of lime preheater
CN110793328B (en) Sintering distributor blanking direction calculation system and control method
CN107267367A (en) A kind of turning-over device turns over unstrained spirits dead angle automatic regulating apparatus and method
CN209665887U (en) Ready-mixed concrete raw material automatic weighing device
CN201065427Y (en) Material feeding control system for titanium reduction-distillation furnace
CN104943232A (en) Automatic adjustment and control system for mold closing height of fine blanking machine and control method thereof
CN203599213U (en) Device for automatic adjustment of rolling mill roll-gap inclining value
CN205192268U (en) Lime kiln material loading is from control system based on PLC control
CN110793327A (en) Belt material switching control system and control method for sintering distributor
CN105429518A (en) Multi-motor synchronous control assembly
CN207313572U (en) A kind of turning-over device turns over unstrained spirits dead angle automatic regulating apparatus
CN205146162U (en) Negative pressure reaction vessel throws material equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20170524