CN102442537B - Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper - Google Patents

Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper Download PDF

Info

Publication number
CN102442537B
CN102442537B CN 201110275342 CN201110275342A CN102442537B CN 102442537 B CN102442537 B CN 102442537B CN 201110275342 CN201110275342 CN 201110275342 CN 201110275342 A CN201110275342 A CN 201110275342A CN 102442537 B CN102442537 B CN 102442537B
Authority
CN
China
Prior art keywords
blowing
value
major trough
time
auxiliary groove
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.)
Active
Application number
CN 201110275342
Other languages
Chinese (zh)
Other versions
CN102442537A (en
Inventor
徐岸非
李光荣
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.)
Wisdri Engineering and Research Incorporation Ltd
Original Assignee
Wisdri Engineering and Research Incorporation 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 Wisdri Engineering and Research Incorporation Ltd filed Critical Wisdri Engineering and Research Incorporation Ltd
Priority to CN 201110275342 priority Critical patent/CN102442537B/en
Publication of CN102442537A publication Critical patent/CN102442537A/en
Application granted granted Critical
Publication of CN102442537B publication Critical patent/CN102442537B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper, which comprises a control module and a plurality of weighing hoppers. The control module is used for determining an error value when one main tank and one auxiliary tank share one weighing hopper, determining a feeding error compensation value according to the error value, performing feeding compensation according to the feeding error compensation value and determining a weighing target value. The blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper is capable of accurately distinguishing various conditions when raw materials in the main tanks and the auxiliary tanks are mixed and weighed, and the precision of supply total weight and supply weight at each time of various ore raw materials is guaranteed.

Description

Two grooves share the blast furnace ore Weighting and Controlling System of scale hooper
Technical field
The present invention relates to blast furnace discharge control technology field, particularly a kind of two grooves share the blast furnace ore Weighting and Controlling System of scale hooper.
Background technology
In recent years, reduce investment outlay, reduce the requirement of land used for reaching, blast furnace ore feed begins to adopt main and auxiliary ore deposit groove to be arranged side by side, and both sides share the mode of scale hooper.Simultaneously, along with the progress of computer technology, the application of secondary machine in blast furnace system is also more and more general, and some enterprises have also configured the full ERP of factory and implemented expert system, and this has also produced comprehensively and deep effect the control mode of ore feed.
New process characteristic and mode of operation have proposed Secretary to the Weighting and Controlling of feed under groove, and conventional control algolithm can not be fully satisfied, mainly contain following some:
(1), introduce secondary machine and ERP after, generally set batch heavyly by each material kind by secondary machine or ERP for material formula, the mode to each scale hooper intended target value in this and conventional algorithm has than big difference;
(2), the feeder apparatus fault tends to cause larger error, he and conventional control algolithm generally adopts the scale hooper independent compensation mode of error separately, if equipment failure this moment longer duration can cause compensation untimely.And after the long period, conditions of blast furnace enters new equilibrium stage, and original error need not compensation, if this moment, equipment recover to use and operating personnel's original error of clearance by hand not, will cause the mistake compensation;
(3), after main and auxiliary ore deposit groove shares scale hooper, adopt conventional algorithm can't obtain the blowing value of both sides raw material, more can't calculate error separately;
(4), the production status of large heat size, high load capacity requires that under groove, system has higher feeding speed, this is also to the ageing requirements at the higher level that proposed of weighing control algolithm.
Summary of the invention
One of purpose of the present invention is to provide the blast furnace ore Weighting and Controlling System that a kind of two grooves that can accurately carry out the blowing compensation share scale hooper.
According to an aspect of the present invention, the blast furnace ore Weighting and Controlling System that provides a kind of two grooves to share scale hooper comprises: control module, a plurality of scale hooper; Described control module, when determining that major trough and auxiliary groove share described scale hooper, the error amount of blowing is determined blowing error compensation value according to described error amount, and carries out the blowing compensation according to described blowing error compensation value, determines the weighing desired value.
Further, described control module comprises the first blowing determination module, the described major trough when determining major trough and the common weighing of auxiliary groove and auxiliary groove blowing value separately; The second blowing determination module, described major trough and auxiliary groove blowing value separately when determining the weighing of major trough and auxiliary sheave stream; Blowing error determination module is determined the error value E of blowing according to described major trough and auxiliary groove blowing value separately K1_n=W SetK1_n-W K1_nDescribed E K1_nBe mineral K 1The error amount of the n time blowing, described W SetK1_nBe the n time mineral K 1Batch reset definite value; Described W K1_nBe mineral K 1The n time total blowing amount, described Described j is the number of scale hooper, described W K1_niMineral K 1The blowing value of the major trough of the n time blowing or auxiliary groove; Blowing error compensation determination module is determined blowing error compensation value according to the blowing error amount that described blowing error determination module is determined Wherein, δ = E o _ K 1 ifΔ 2 = 1 E e _ K 1 ifΔ 2 = 2 ; If Δ 1=1; If Δ 1=2; Wherein, described E Max_K1Be the error compensation upper limit, described δ is the error intermediate value, described E O_K1Be odd number time blowing error compensation value, described E E_K1Be even number time blowing error compensation value, described Δ 1 is deviation accumulation odd even token, and described Δ 2 is error compensation odd even token;
Blowing desired value determination module is determined the blowing desired value according to the blowing error compensation value that described blowing error compensation determination module is determined W t arg K 1 _ n = W setK 1 _ n ( 1 - α ) + E com _ K 1 j + W cdz _ n , When the storehouse number of a mineral K1 batching that participates in is j, described W TargK1_nThe n time desired value of single scale hooper of participation work, described W Cdz_nFor claiming floors, described W SetK1_nBe the n time mineral K 1Batch reset definite value, described E Com_K1Be blowing error compensation value, described α is moisture.
Further, the first blowing determination module comprises: the 3rd blowing determining unit, determine that the total blowing value of scale hooper is not less than described major trough material described major trough and auxiliary groove blowing value separately during the value of blowing in scale hooper when full, the blowing value W of described major trough A_n=W LmA_n-W Lk_n-1+ η (W Lk_n-1-W Lk_n), the blowing value W of described auxiliary groove B_n=W Lm_n-W LmA_n+ (1-η) (W Lk_n-1-W Lk_n); The 4th blowing determining unit, described major trough and auxiliary groove blowing value separately when determining value in scale hooper of blowing when the total blowing value of scale hooper is full less than described major trough material, the blowing value W of described major trough A_n=W n-(1-η) W Lk_n-1, the blowing value W of described auxiliary groove B_n=W n-W A_nWherein, W n=W Lm_n-W Lk_n, described Described W LmA_nThe n time weighing major trough material value of blowing in scale hooper when full, described W Lm_nThat the n time material in scale hooper completely is worth, described W Lk_nResidual value after the n time blowing completed, described W Lk_n-1Residual value after the n-1 time blowing completed, described W SetA_nMajor trough blowing setting value when being the n time weighing; W SetB_nAuxiliary groove blowing setting value when being the n time weighing.
Further, described the second blowing determination module comprises: the 5th blowing determining unit, determine single major trough that claims last time, and during the auxiliary groove of single title next time, major trough and auxiliary groove blowing value separately, the blowing value W of described major trough A_n=W Lk_n-1The blowing value W of described auxiliary groove B_n=W Lm_n-W Lk_n-1-W Lk_nThe 6th blowing determining unit is determined the auxiliary groove of single title last time, when next time, list claimed major trough, and major trough and auxiliary groove blowing value separately, the blowing value W of described major trough A_n=W Lm_n-W Lk_n-1-W Lk_n, the blowing value W of described auxiliary groove B_n=W Lk_n-1Wherein, described W A_nThe blowing value of major trough, described W B_nThe blowing value of auxiliary groove, described W Lk_n-1Residual value after the n-1 time blowing of scale hooper completed, described W Lk_nResidual value after the n time blowing of scale hooper completed, described W Lm_nThat the n time material in scale hooper completely is worth.
Further, described control module realizes by DSP, ARM, FPGA or PLC.
Further, weight transmitter, described weight transmitter are connected between described control module and described scale hooper.
Further, described scale hooper all disposes limit switch and weight sensor.
Two grooves provided by the invention share the blast furnace ore Weighting and Controlling System of scale hooper, and the various situations during to major trough and auxiliary groove raw material mixing weighing have carried out distinguishing accurately, have guaranteed the precision of various ore supply general assembly (TW)s and single supply weight.
Description of drawings
Fig. 1 is the blast furnace ore Weighting and Controlling System framework map that two grooves that provide of the embodiment of the present invention share scale hooper;
Fig. 2 is the control module structured flowchart that the embodiment of the present invention provides;
Scale hooper burden distribution schematic diagram when Fig. 3 is major trough and the common weighing of auxiliary groove;
Burden distribution one schematic diagram when Fig. 4 is major trough and the weighing of auxiliary sheave stream;
Another schematic diagram of burden distribution when Fig. 5 is major trough and the weighing of auxiliary sheave stream.
Embodiment
As shown in Figure 1, two grooves that the embodiment of the present invention provides share the blast furnace ore Weighting and Controlling System of scale hooper, and it comprises control module, weight transmitter, storagetank (comprising major trough A and auxiliary groove B), batcher, vibratory screening apparatus and scale hooper.Wherein, control module is used for controlling major trough A, auxiliary groove B, batcher and vibratory screening apparatus at the scale hooper discharge.Be elaborated as for the embodiment that how to control in connection with shown in Figure 2.Control module can be realized with DSP, ARM, FPGA or PLC.Each scale hooper all configures limit switch and weight sensor.Wherein, limit switch comprises and reaches the position and close two places that put in place, by common cable Access Control unit.Can identify and reach position, indefinite position (neither reach position also do not put in place in the pass), close the signal such as put in place by this limit switch.Weight sensor is converted to electric signal with scale hooper weight and sends into corresponding weight transmitter, and by Profibus-DP bus Access Control unit.Can accurately obtain the gravimetric value of scale hooper by weight sensor, thus the signal that the identification discharging is empty, material is full.
As shown in Figure 2, control module comprises the first blowing determination module 1, the second blowing determination module 2, blowing error determination module 3, blowing error compensation determination module 4 and blowing desired value determination module 5.
Described major trough A and auxiliary groove B blowing value separately when the first blowing determination module 1 is determined major trough A and the common weighing of auxiliary groove B.The first blowing determination module 1 comprises the 3rd blowing determining unit and the 4th blowing determining unit.In conjunction with Fig. 3, the 3rd blowing determining unit and the 4th blowing determining unit are described.The 3rd blowing determining unit determines that the total blowing value of scale hooper is not less than described major trough A material described major trough A and auxiliary groove B blowing value separately during the value of blowing in scale hooper when full, the blowing value W of described major trough A A_n=W LmA_n-W Lk_n-1+ η (W Lk_n-1-W Lk_n), the blowing value W of described auxiliary groove B B_n=W Lm_n-W LmA_n+ (1-η) (W Lk_n-1-W Lk_n).Described major trough A and auxiliary groove B blowing value separately during the value of blowing in scale hooper when the 4th blowing determining unit determines that the total blowing value of scale hooper is full less than described major trough A material, the blowing value W of described major trough A A_n=W n-(1-η) W Lk_n-1, the blowing value W of described auxiliary groove B B_n=W n-W A_nWherein, described W nTotal blowing value W n=W Lm_n-W Lk_n, Described W LmA_nThe n time weighing major trough A material blowing value in scale hooper when full, described W Lm_nThat the n time material in scale hooper completely is worth, described W Lk_nResidual value after the n time blowing completed, described W Lk_n-1Residual value after the n-1 time blowing completed, described W SetA_nMajor trough A blowing setting value when being the n time weighing; W SetB_nAuxiliary groove B blowing setting value when being the n time weighing.
The second blowing determination module 2 is determined major trough A and auxiliary groove B described major trough A and auxiliary groove B blowing value separately during weighing in turn.The second blowing determination module 2 comprises the 5th blowing determining unit and the 6th blowing determining unit.Describe in conjunction with Fig. 4,5 pairs of the 5th blowing determining units and the 6th blowing determining unit.The 5th blowing determining unit is determined single major trough A that claims last time, during the auxiliary groove B of single title next time, and major trough A and auxiliary groove B blowing value separately, the blowing value W of described major trough A A_n=W Lk_n-1The blowing value W of described auxiliary groove B B_n=W Lm_n-W Lk_n-1-W Lk_nThe 6th blowing determining unit is determined single auxiliary groove B of title last time, when next time, list claimed major trough A, and major trough A and auxiliary groove B blowing value separately, the blowing value W of described major trough A A_n=W Lm_n-W Lk_n-1-W Lk_n, the blowing value W of described auxiliary groove B B_n=W Lk_n-1Wherein, described W A_nThe blowing value of major trough A, described W B_nThe blowing value of auxiliary groove B, described W Lk_n-1Residual value after the n-1 time blowing of scale hooper completed, described W Lk_nResidual value after the n time blowing of scale hooper completed, described W Lm_nThat the n time material in scale hooper completely is worth.
The error value E that the described major trough A that blowing error determination module 3 is determined according to the first blowing determination module 1 and the second blowing determination module 2 and auxiliary groove B blowing value are separately determined blowing K1_n=W SetK1_n-W K1_nDescribed E K1_nBe mineral K 1The error amount of the n time blowing, described W SetK1_nBe the n time mineral K 1Batch reset definite value (every batch of value of wanting blowing setting in advance); Described W K1_nBe mineral K 1The n time total blowing amount, described Described j is the number of scale hooper, described W K1_niMineral K 1The major trough A of the n time blowing or the blowing value of auxiliary groove B can be determined by the first blowing determination module 1 and the second blowing determination module 2, repeat no more.
The blowing error amount that blowing error compensation determination module 4 is determined according to blowing error determination module 3 is determined blowing error compensation value Wherein, δ = E o _ K 1 ifΔ 2 = 1 E e _ K 1 ifΔ 2 = 2 ; If Δ 1=1; If Δ 1=2; Wherein, described E Max_K1Be the error compensation upper limit, described δ is the error intermediate value, described E O_K1Be odd number time blowing error compensation value, described E E_K1Be even number time blowing error compensation value, described Δ 1 is deviation accumulation odd even token, and described Δ 2 is error compensation odd even token.
The blowing error compensation value that blowing desired value determination module 5 is determined according to described blowing error compensation determination module 4 is determined the blowing desired value W t arg K 1 _ n = W setK 1 _ n ( 1 - α ) + E com _ K 1 j + W cdz _ n , When the storehouse number of a mineral K1 batching that participates in is j, described W TargK1_nThe n time desired value of single scale hooper of participation work, described W Cdz_nFor claiming floors, described W SetK1_nBe the n time mineral K 1Batch reset definite value, described E Com_K1Be blowing error compensation value, described α is moisture.
Below in conjunction with an instantiation, to how to carry out the blowing compensation by two tokens describe.
(1), the 1st ore weighing of beginning, this moment Δ 1=1, Δ 2=1, each ore kind odd number, even number time deviation accumulation value are 0, need not compensate.
(2), the ore of the 1st weighing disperses scale hooper to discharge until all drained successively from each, according to previously described system, draw each ore kind error amount, because of Δ 1=1, therefore error amount is counted odd number time deviation accumulation value, and even number time deviation accumulation value is still 0.Because the present invention adopts " every batch compensation " (for example: the error that when joining the 3rd batch of material, compensation the 1st batch of material produces, the error that when joining the 4th batch of material, compensation the 2nd batch of material produces, the rest may be inferred) system, therefore can carry out simultaneously the weighing process of the 2nd ore in the process of the 1st ore discharge, and Δ 2 is set to 2, because even number time deviation accumulation value is 0, need not compensate.
(3), the ore of the 2nd weighing disperses scale hooper to discharge until all drained successively from each, and Δ 1 is set to 2, error amount is counted even number time deviation accumulation value, and odd number time deviation accumulation value remains unchanged.Adopt the system of " every batch compensation " because of the present invention, thus can carry out simultaneously the weighing process of the 3rd ore in the process of the 2nd ore discharge, and Δ 2 is set to 1, count the blowing desired value with odd number time deviation accumulation value as the error compensation value this moment, sees for details W t arg K 1 _ n = W setK 1 _ n ( 1 - α ) + E com _ K 1 j + W cdz _ n .
(4), the ore of the 3rd weighing disperses scale hooper to discharge until all drained successively from each, and Δ 1 is set to 1, error amount is counted odd number time deviation accumulation value, and even number time deviation accumulation value remains unchanged.Adopt the system of " every batch compensation " because of the present invention, thus can carry out simultaneously the weighing process of the 4th ore in the process of the 3rd ore discharge, and Δ 2 is set to 2, count the blowing desired value with even number time deviation accumulation value as the error compensation value this moment, sees for details W t arg K 1 _ n = W setK 1 _ n ( 1 - α ) + E com _ K 1 j + W cdz _ n .
So move in circles.
Two grooves that provide according to the embodiment of the present invention share the blast furnace ore Weighting and Controlling System of scale hooper, various situations during to the raw material mixing weighing of major trough A, auxiliary groove B both sides have carried out distinguishing comparatively accurately, guaranteed the precision of various ore supply general assembly (TW)s and single supply weight, simultaneously owing to the blowing error being carried out " by batch compensation ", reduce manipulation strength, improved production efficiency and feeding speed.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.

Claims (6)

1. a groove shares the blast furnace ore Weighting and Controlling System of scale hooper, its feature in, comprising:
Control module, a plurality of scale hooper;
Described control module, when determining that major trough and auxiliary groove share described scale hooper, the error amount of blowing is determined blowing error compensation value according to described error amount, and carries out the blowing compensation according to described blowing error compensation value, determines the weighing desired value; Described control module comprises:
The first blowing determination module, described major trough and auxiliary groove blowing value separately when determining major trough and the common weighing of auxiliary groove;
The second blowing determination module, described major trough and auxiliary groove blowing value separately when determining the weighing of major trough and auxiliary sheave stream;
Blowing error determination module is determined the error value E of blowing according to described major trough and auxiliary groove blowing value separately K1_n=W SetK1_n-W K1_nDescribed E K1_nBe mineral K 1The error amount of the n time blowing, described W SetK1_nBe the n time mineral K 1Batch reset definite value; Described W K1_nBe mineral K 1The n time total blowing amount, described Described j is the number of scale hooper, described W K1_niMineral K 1The blowing value of the major trough of the n time blowing or auxiliary groove;
Blowing error compensation determination module is determined blowing error compensation value according to the blowing error amount that described blowing error determination module is determined Wherein, δ = E o _ k 1 ifΔ 2 = 1 E e _ K 1 ifΔ 2 = 2 ; E o _ K 1 = Σ k = 1 n - 1 E K 1 _ k , ifΔ 1 = 1 ; E e _ K 1 = Σ k = 1 n - 1 E K 1 _ k , ifΔ 1 = 2 ; Wherein, described E Max_K1Be the error compensation upper limit, described δ is the error intermediate value, described E O_K1Be odd number time blowing error compensation value, described E E_K1Be even number time blowing error compensation value, described Δ 1 is deviation accumulation odd even token, and described Δ 2 is error compensation odd even token;
Blowing desired value determination module is determined the blowing desired value according to the blowing error compensation value that described blowing error compensation determination module is determined W t arg K 1 _ n = W setK 1 _ n ( 1 - α ) + E com _ K 1 j + W cdz _ n , When the storehouse number of a mineral K1 batching that participates in is j, described W TargK1_nThe n time desired value of single scale hooper of participation work, described W Cdz_nFor claiming floors, described W SetK1_nBe the n time mineral K 1Batch reset definite value, described E Com_K1Be blowing error compensation value, described α is moisture.
2. control system according to claim 1, is characterized in that, the first blowing determination module comprises:
The 3rd blowing determining unit determines that the total blowing value of scale hooper is not less than described major trough material described major trough and auxiliary groove blowing value separately during the value of blowing in scale hooper when full, the blowing value W of described major trough A_n=W LmA_n-W Lk_n-1+ η (W Lk_n-1-W Lk_n), the blowing value W of described auxiliary groove B_n=W Lm_n-W LmA_n+ (1-η) (W Lk_n-1-W Lk_n);
The 4th blowing determining unit, described major trough and auxiliary groove blowing value separately when determining value in scale hooper of blowing when the total blowing value of scale hooper is full less than described major trough material, the blowing value W of described major trough A_n=W n-(1-η) W Lk_n-1, the blowing value W of described auxiliary groove B_n=W n-W A_n, described W n=W Lm_n-W Lk_n
Wherein, described W nTotal blowing value W n=W Lm_n-W Lk_n, described Described W LmA_nThe n time weighing major trough material value of blowing in scale hooper when full, described W Lm_nThat the n time material in scale hooper completely is worth, described W Lk_nResidual value after the n time blowing completed, described W Lk_n-1Residual value after the n-1 time blowing completed, described W SetA_nMajor trough blowing setting value when being the n time weighing; W SetB_nAuxiliary groove blowing setting value when being the n time weighing.
3. control system according to claim 1, is characterized in that, described the second blowing determination module comprises:
The 5th blowing determining unit is determined single major trough that claims last time, during the auxiliary groove of single title next time, and major trough and auxiliary groove blowing value separately, the blowing value W of described major trough A_n=W Lk_n-1The blowing value W of described auxiliary groove B_n=W Lm_n-W Lk_n-1-W Lk_n
The 6th blowing determining unit is determined the auxiliary groove of single title last time, when next time, list claimed major trough, and major trough and auxiliary groove blowing value separately, the blowing value W of described major trough A_n=W Lm_n-W Lk_n-1-W Lk_n, the blowing value W of described auxiliary groove B_n=W Lk_n-1
Wherein, described W A_nThe blowing value of major trough, described W B_nThe blowing value of auxiliary groove, described W Lk_n-1Residual value after the n-1 time blowing of scale hooper completed, described W Lk_nResidual value after the n time blowing of scale hooper completed, described W Lm_nThat the n time material in scale hooper completely is worth.
4. according to claim 1-3 any one described systems is characterized in that:
Described control module realizes by DSP, ARM, FPGA or PLC.
5. system according to claim 4, is characterized in that, also comprises:
Weight transmitter, described weight transmitter are connected between described control module and described scale hooper.
6. according to claim 1-3 any one described systems is characterized in that:
Described scale hooper all disposes limit switch and weight sensor.
CN 201110275342 2011-09-16 2011-09-16 Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper Active CN102442537B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110275342 CN102442537B (en) 2011-09-16 2011-09-16 Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110275342 CN102442537B (en) 2011-09-16 2011-09-16 Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper

Publications (2)

Publication Number Publication Date
CN102442537A CN102442537A (en) 2012-05-09
CN102442537B true CN102442537B (en) 2013-06-19

Family

ID=46005557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110275342 Active CN102442537B (en) 2011-09-16 2011-09-16 Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper

Country Status (1)

Country Link
CN (1) CN102442537B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104692091A (en) * 2013-12-04 2015-06-10 宁安市粮油淀粉机械制造有限公司 Continuous bucket type metering system
CN109941470A (en) * 2017-12-20 2019-06-28 佛山市承安铜业有限公司 A kind of weighing device and its weighing method and copper ball production line and production packing method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2786569Y (en) * 2004-11-24 2006-06-07 王江东 Electronic chute scale

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1128864A (en) * 1995-02-11 1996-08-14 陈晓力 Method and device of automatic electronic weighing for bulk material
JP5100566B2 (en) * 2008-08-07 2012-12-19 株式会社イシダ Combination weighing device
CN201695054U (en) * 2010-05-28 2011-01-05 济南中燃科技发展有限公司 Screening and weighing device under blast furnace trough

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2786569Y (en) * 2004-11-24 2006-06-07 王江东 Electronic chute scale

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
物料动态称重系统的研究;高晶晶;《中国优秀硕士学位论文全文数据库》;20090215(第2期);摘要,正文第2、9、17-20页,图1-1,2-9,3-1 *
高晶晶.物料动态称重系统的研究.《中国优秀硕士学位论文全文数据库》.2009,(第2期),

Also Published As

Publication number Publication date
CN102442537A (en) 2012-05-09

Similar Documents

Publication Publication Date Title
CN103276137A (en) Control method used for computer batch charging system of steelmaking converter
CN102963701B (en) Dynamic control method and device for sintering distributor
CN102442537B (en) Blast furnace ore weighing and controlling system with each two tanks sharing one weighing hopper
CN104988261A (en) Blast furnace belt feeding system and material list setting method thereof
CN102424261A (en) High-precision continuous feeding system
CN202255581U (en) Blast furnace ore weighing and controlling system for weigh hopper shared by both slots
CN102368151B (en) Blast furnace ore-weighing control method for two tanks sharing one weighing hopper
CN109016163A (en) A kind of concrete stirring feeding control system
CN203598776U (en) Weighing and mixing system for lime production
CN103388983A (en) Automatic proportioning, loading and unloading control system of ferroalloy submerged-arc furnace
CN203427160U (en) Automatic dosing system for raw materials of electrically-fused bricks
CN102054125A (en) Method for stabilizing chemical constituents of charging agglomerate
CN103292884A (en) Multi-way distributing and batching scale
CN103127872A (en) Automatic dosing system and production process
CN102837834A (en) Environment-friendly burdening, stirring and packaging production line
CN102442536B (en) Discharge controlling method for scattered weighing hoppers under blast furnace tank
CN104911291A (en) Blast furnace multiple-material preparation system and method in concentrated weighing mode
CN101100631A (en) Washing powder automatic producing device based on weightless scale control system
CN209599566U (en) A kind of concrete mixing plant sand material homogenization system
CN204269212U (en) A kind of accurate feed proportioning system
CN202576278U (en) Precise distribution system of compound fertilizer production line
CN102528960A (en) Multi-stage formula metering and blanking automatic mixing system
CN202903306U (en) Solid material discharge metering device
CN107990968A (en) A kind of check method of blast furnace lower hopper scale
CN204752774U (en) Concentrate many material kind of systems of prepareeing material of blast furnace of weighing under mode

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model