CN112221588A - Multifunctional overhead traveling crane discharging online automatic screening and crushing system and operation method thereof - Google Patents
Multifunctional overhead traveling crane discharging online automatic screening and crushing system and operation method thereof Download PDFInfo
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- CN112221588A CN112221588A CN202011027161.1A CN202011027161A CN112221588A CN 112221588 A CN112221588 A CN 112221588A CN 202011027161 A CN202011027161 A CN 202011027161A CN 112221588 A CN112221588 A CN 112221588A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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Abstract
The invention discloses a multifunctional overhead traveling crane discharging online automatic screening and crushing system and an operation method thereof.A newly-installed discharging pipeline is led out from an opening at the conical bottom of a packing bin at one side of an original discharging pipe on an operating platform of a multifunctional overhead traveling crane, the newly-installed discharging pipeline is connected with a newly-installed electric discharging valve, a rotary screen is connected with the newly-installed electric discharging valve, a double-geared roller crusher and a spiral conveyer are respectively connected with the rotary screen, the spiral conveyer is connected with the original discharging pipe, the newly-installed dust collecting pipe is connected between the rotary screen and the double-geared roller crusher, and the newly-installed dust collecting pipe is connected with the original dust collecting pipe on the operating platform of the multifunctional overhead traveling crane. The invention skillfully utilizes the original discharging flow on the multifunctional crown block, automatically completes the operations of screening and crushing the filler on line while discharging, and then sends the filler into the original newly-charged discharging pipeline through the screw conveyer, thereby not increasing the working procedure time, reducing the manual operation, improving the automatic control level and greatly improving the labor efficiency and the production efficiency.
Description
Technical Field
The invention relates to the technical field of aluminum-used green anode carbon block production equipment, in particular to a multifunctional overhead traveling crane discharging online automatic screening and crushing system and an operation method thereof.
Background
The aluminum used green anode carbon block is made of calcined petroleum coke and coal tar pitch, and high temperature roasting is needed in advance before loading the aluminum used green anode carbon block into a tank in order to improve the electrolysis operation environment and improve the physical and chemical properties of the aluminum used green anode carbon block. In order to prevent the deformation, cracks and other conditions of the green anode carbon block caused by stress release in the roasting process, the filling material of 0-6mm most of metallurgical coke or petroleum coke is required to be placed around the green anode carbon block to protect the carbon block when the furnace is charged, the filling material is required to be sucked out when the roasted carbon block is discharged from the furnace, and then the filling material is charged into other furnace chambers to be recycled. When the filling material is repeatedly used in the roasting furnace, part of the filling material can adsorb coal pitch volatilized from the carbon block to coke and agglomerate, and simultaneously, part of the filling material can be doped with casting material blocks for repairing the furnace, wherein the casting material blocks partially fall off. Coke lumps and pouring material lumps in the filling materials can be bridged around carbon blocks in the roasting furnace, so that the filling materials are not filled in a real manner, the charging quality and the anode roasting quality are seriously influenced, and therefore large-particle materials in the filling materials need to be removed in time. At present, the filling material discharging in the carbon block charging and the filling material discharging and sucking out in the furnace are mainly realized by a multifunctional crown block, but the multifunctional crown block is not provided with equipment for sieving and crushing the filling material. When the carbon block is discharged, the filler sucked out by the multifunctional crown block is buffered in a filler bin on the multifunctional crown block, and then the filler is used for continuously loading other furnace chambers without being placed outside the furnace. Only an electric discharge valve is arranged below a filling bin on the existing multifunctional crown block and used for controlling discharging, a discharging pipe is used for guiding materials into a roasting furnace, and a dust collecting pipe is used for collecting dust generated in the discharging process. When the furnace is filled with the filling material by the carbon block, an electric discharge valve below a filling bin needs to be opened, and the filling material in the bin is filled around the carbon block in the roasting furnace along a discharging pipe under the action of self gravity; when the discharged materials are enough, the electric discharge valve is closed, and the discharging is stopped.
In order to meet the requirement of a production process, if a set of special filler screening and crushing system is newly built outside a furnace, a factory building is newly built, a dust remover is purchased, manual operation configuration is added, filler is discharged from a crown block bin to the outside of the furnace for screening and crushing, and then is sucked by a crown block for use, the crown block needs to travel back and forth in a special process, the investment is large, the filler is required to be externally placed to the outside of the furnace during screening and crushing, certain process time is increased, and the production efficiency is greatly reduced.
Disclosure of Invention
Aiming at the problem that the quality of the anode carbon block is seriously influenced by large granular materials such as coke agglomerates, pouring material agglomerates and the like in the filler when the anode carbon block is roasted, the existing multifunctional crown block does not have the function of screening and crushing the filler and corresponding equipment, and a newly-built special filler screening, crushing and dedusting system has large investment, low production efficiency and large pollution, so that the invention provides the multifunctional crown block discharging online automatic screening and crushing system and the operation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
a multifunctional overhead traveling crane emptying online automatic screening and crushing system comprises a newly-installed dust collecting pipe, a newly-installed electric discharge valve, a rotary screen, a double-geared roller crusher and a screw conveyor, wherein the newly-installed electric discharge valve, the rotary screen, the double-geared roller crusher and the screw conveyor are electrically connected with a programmable controller;
newly-installed blowing pipeline is drawn forth in the trompil of the filler storehouse awl bottom of original blowing pipe one side on multi-functional overhead traveling crane operation platform, newly-installed blowing pipeline and newly-installed electric discharge valve are connected, the drum sieve links to each other with newly-installed electric discharge valve, double tooth roller crusher and screw conveyer respectively with the drum sieve links to each other, screw conveyer links to each other with original blowing pipe, and newly-installed dust collecting pipe is connected between drum sieve and double tooth roller crusher, newly-installed dust collecting pipe links to each other with the original pipe that gathers dust on the multi-functional overhead traveling crane operation platform.
Furthermore, the screen holes of the drum screen are 6mm multiplied by 6 mm.
Further, the inclination angle of the drum screen is 26 degrees.
Further, the discharge granularity of the double-geared roller crusher is less than 6 mm.
Furthermore, the newly-installed discharging pipeline is connected with the newly-installed electric discharging valve through a chute.
Furthermore, the newly-installed electric discharge valve is connected with the drum screen through the slide pipe.
Furthermore, the drum screen is connected with two slide pipes, the right slide pipe is connected with the screw conveyor, and the left slide pipe is connected with the double-geared roller crusher.
Furthermore, a new dust collecting pipe is led out from an opening on the chute between the drum screen and the double-geared roller crusher.
Further, the spiral conveyor is connected with the original discharging pipe through a chute.
The multifunctional overhead traveling crane discharging online automatic screening and crushing system comprises the following operation methods:
(1) when the carbon block is filled with the furnace filler, a multifunctional overhead traveling crane operator starts a discharging online automatic screening and crushing system;
(2) the dust collector is automatically started and maintained in a delayed mode;
(3) the screw conveyer is started and maintained in an automatic time-delay mode;
(4) the double-geared roller crusher is automatically started and maintained in a delayed mode;
(5) the drum screen is started and maintained automatically in a delayed mode;
(6) the newly-installed electric discharge valve is automatically started and maintained in a delayed mode, and fillers in the filling bin are sequentially screened, crushed and conveyed by means of the gravity of the fillers and then are filled around carbon blocks in the roasting furnace;
(7) after the discharging is finished, an operator closes the discharging on-line automatic screening and crushing system;
(8) the newly-installed electric discharge valve is automatically closed and maintained in a delayed mode, the filler is intercepted, and the blanking is stopped;
(9) the drum screen automatically delays to stop and keep;
(10) the double-geared roller crusher automatically delays to stop and keep;
(11) the screw conveyer automatically delays to stop and keep;
(12) the dust collector is automatically delayed, stopped and maintained;
(13) when broken system fault of online automatic screening of multi-functional overhead traveling crane blowing, can use original blowing system emergent, promptly: when filling materials are used for charging the carbon blocks, the original discharging system is started, the original electric discharging valve is automatically opened and kept after the dust collector is automatically started in a delayed mode, the filling materials are filled around the carbon blocks in the roasting furnace along the original discharging pipe under the action of self gravity, the original discharging system is closed after discharging is completed, and the dust collector is automatically stopped in a delayed mode and kept after the original electric discharging valve is automatically closed in a delayed mode.
The multifunctional overhead traveling crane discharging online automatic screening and crushing system and the operation method thereof provided by the invention have the following beneficial effects:
1. the invention utilizes the mechanical equipment and the automatic control system which are newly added on the multifunctional crown block platform, skillfully utilizes the original discharging flow on the multifunctional crown block, automatically finishes the operations of screening and crushing the filling material on line while discharging, and then sends the filling material into the original newly-charged discharging pipeline through the screw conveyer, thereby not increasing the working procedure time, reducing the manual operation, improving the automatic control level and greatly improving the labor efficiency and the production efficiency.
2. The original dust collector of the multifunctional crown block is used for collecting and recycling dust in the screening and crushing processes, so that the problem of environmental pollution is solved.
3. Original new dress blowing pipeline system is as emergent reserve, and new dress electric discharge valve and original electric discharge valve interlocking protection can not open simultaneously, and the safety in production guarantee ability has obtained the improvement.
4. Compared with a newly-built special filler screening and crushing system, the invention greatly saves investment, and has high labor efficiency, high production efficiency and particularly high cost performance.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of an online automatic screening and crushing system for discharging of a multifunctional crown block provided by an embodiment of the invention.
Description of reference numerals:
1. filling a storage bin; 2. newly installing an electric discharge valve; 3. a drum screen; 4. a double-geared roller crusher; 5. a screw conveyor; 6. original discharging pipes; 7. the original electric discharge valve; 8. the original dust collecting pipe; 9. a dust collecting pipe is newly installed.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The utility model provides an online automatic screening crushing system of multi-functional overhead traveling crane blowing, it installs on the original blowing system of multi-functional overhead traveling crane operation platform. The original discharging system comprises a filling bin 1, an original discharging pipe 6, an original electric discharging valve 7 and an original dust collecting pipe 8. The filling bin 1, the original electric discharge valve 7 and the original discharge pipe 6 are connected in sequence. One end of the original dust collecting pipe 8 is communicated with the original discharging pipe 6, and the other end is connected with a dust collector (not shown).
The multifunctional overhead traveling crane discharging online automatic screening and crushing system comprises a newly-installed electric discharging valve 2, a rotary screen 3, a double-geared roller crusher 4, a screw conveyor 5, a newly-installed dust collecting pipe 9 and a Programmable Logic Controller (PLC) (not shown).
Newly-installed blowing pipeline is drawn forth in the trompil of the awl end in filler storehouse 1 of original blowing pipe 6 one side on multi-functional overhead traveling crane operation platform, newly-installed blowing pipeline passes through the elephant trunk and connects newly-installed electronic discharge valve 2, and this newly-installed electronic discharge valve 2 passes through elephant trunk connection drum sieve 3. The drum screen 3 is connected with two slide pipes, the right slide pipe is connected with a screw conveyor 5, and the left slide pipe is connected with a double-geared roller crusher 4. The double-geared roller crusher 4 is connected with a screw conveyer 5 through a chute, and the screw conveyer 5 is connected with an original discharging pipe 6 through the chute. A new dust collecting pipe 9 is led out from a hole in the chute between the rotary screen 3 and the double-geared roller crusher 4, and the new dust collecting pipe 9 is connected with the original dust collecting pipe 8.
The novel electric discharge valve 2, the rotary screen 3, the double-geared roller crusher 4 and the screw conveyer 5 are electrically connected with a Programmable Logic Controller (PLC).
The screen holes of the drum screen 3 are 6mm multiplied by 6mm, and the inclination angle of the drum screen 3 is 26 degrees. The discharge granularity of the double-geared roller crusher is less than 6 mm.
The multifunctional overhead traveling crane discharging online automatic screening and crushing system has the following operation method:
(1) when the carbon block is filled with the furnace filler, a multifunctional overhead traveling crane operator starts a discharging online automatic screening and crushing system;
(2) the dust collector is automatically started and maintained in a delayed mode;
(3) the screw conveyor 5 is started and maintained automatically in a delayed mode;
(4) the double-geared roller crusher 4 is automatically started in a delayed mode and kept;
(5) the drum screen 3 is started and maintained automatically in a delayed mode;
(6) the newly-installed electric discharge valve 2 is automatically started in a delayed mode and kept (the original electric discharge valves 7 are interlocked and kept in a closed state), and fillers in the filling bin 1 are sequentially subjected to screening by the rotary screen 3, crushing by the double-geared roller crusher 4 and conveying by the spiral conveyer 5 under the action of self gravity and then are filled around carbon blocks in the roasting furnace through the original discharge pipe 6;
(7) after the discharging is finished, an operator closes the discharging on-line automatic screening and crushing system;
(8) the newly-installed electric discharge valve 2 is automatically closed and maintained in a delayed mode, the filler is intercepted, and the blanking is stopped;
(9) the drum screen 3 automatically delays to stop and keep;
(10) the double-geared roller crusher 4 automatically delays to stop and keep;
(11) the screw conveyer 5 automatically delays to stop and keep;
(12) the dust collector is automatically delayed, stopped and maintained;
(13) when broken system fault of online automatic screening of multi-functional overhead traveling crane blowing, can use original blowing system emergent, promptly: when filling materials are used for charging the carbon blocks, the original discharging system is started, after the dust collector is automatically started in a delayed mode, the original electric discharging valve 7 is automatically opened and kept (the newly-installed electric discharging valves 2 are interlocked and kept in a closed state), the filling materials are filled around the carbon blocks in the roasting furnace along the original discharging pipe 6 under the action of self gravity, after discharging is completed, the original discharging system is closed, and after the original electric discharging valve 7 is automatically closed in a delayed mode, the dust collector is automatically stopped in a delayed mode and kept.
Above-mentioned online automatic screening crushing system of multi-functional overhead traveling crane blowing reaches the effect of control blowing through newly installing electric discharge valve 2, reach the effect that will be greater than 6 mm's big granule material screening through drum sieve 3, reach the effect that will be greater than 6 mm's big granule material breakage to below 6mm through double-tooth roller crusher 4, reach the effect that carries original blowing pipe 6 interior with the stopping of sieving and broken back stopping through screw conveyer 5, newly installing dust collecting pipe 9 that trompil was drawn forth on the elephant trunk between drum sieve 3 and double-tooth roller crusher 4 reaches the effect that will screen simultaneously and the dust that the crushing in-process produced is collected. The automatic delayed starting and stopping effects of material discharging, screening, crushing, conveying and dust collecting are achieved through a Programmable Logic Controller (PLC), and the effect of interlocking protection of the newly-installed electric discharge valve 2 and the original electric discharge valve 7 is achieved. The system is connected with the original emptying system in parallel, and the original emptying system is used as emergency standby.
Above-mentioned online automatic screening of multi-functional overhead traveling crane blowing crushing system is with advantage multi-functional overhead traveling crane blowing flow, the stopping that packs in the feed bin 1 on the multi-functional overhead traveling crane when the blowing relies on self action of gravity to get into drum sieve 3 in proper order, double tooth roller crusher 4, screw conveyer 5, the online automatic screening of having realized the stopping, breakage, the function of gathering dust, it does not increase the process time, automatic control level has been promoted, labor efficiency and production efficiency have been improved greatly, the environmental pollution problem has been solved, the safety in production guarantee ability has obtained the improvement. Compared with a newly-built special filler screening and crushing system, the multifunctional overhead traveling crane discharging online automatic screening and crushing system greatly saves investment, and is high in labor efficiency, production efficiency and cost performance.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A multifunctional overhead traveling crane emptying online automatic screening and crushing system is characterized by comprising a newly-installed dust collecting pipe, a newly-installed electric discharge valve, a rotary screen, a double-geared roller crusher and a screw conveyor, wherein the newly-installed electric discharge valve, the rotary screen, the double-geared roller crusher and the screw conveyor are electrically connected with a programmable controller;
newly-installed blowing pipeline is drawn forth in the trompil of the filler storehouse awl bottom of original blowing pipe one side on multi-functional overhead traveling crane operation platform, newly-installed blowing pipeline and newly-installed electric discharge valve are connected, the drum sieve links to each other with newly-installed electric discharge valve, double tooth roller crusher and screw conveyer respectively with the drum sieve links to each other, screw conveyer links to each other with original blowing pipe, and newly-installed dust collecting pipe is connected between drum sieve and double tooth roller crusher, newly-installed dust collecting pipe links to each other with the original pipe that gathers dust on the multi-functional overhead traveling crane operation platform.
2. The multifunctional overhead traveling crane discharging on-line automatic screening and crushing system as claimed in claim 1, wherein the screen hole of the drum screen is 6 x 6 mm.
3. The multifunctional overhead traveling crane discharging online automatic screening and crushing system according to claim 2, wherein the inclination angle of the drum screen is 26 °.
4. The multifunctional overhead traveling crane emptying online automatic screening and crushing system according to claim 1, wherein the discharge granularity of the double-geared roller crusher is less than 6 mm.
5. The multifunctional overhead traveling crane discharging online automatic screening and crushing system as claimed in claim 1, wherein a newly charged discharging pipeline is connected with the newly charged electric discharging valve through a chute.
6. The multifunctional overhead traveling crane emptying online automatic screening and crushing system according to claim 1, wherein the newly-installed electric discharge valve is connected with the rotary screen through a chute.
7. The multifunctional overhead traveling crane emptying online automatic screening and crushing system according to claim 1, wherein the drum screen is connected with two chutes, the right chute is connected with the screw conveyor, and the left chute is connected with the double-geared roller crusher.
8. The multifunctional overhead traveling crane emptying online automatic screening and crushing system according to claim 7, wherein a new dust collecting pipe is led out from an opening on a chute between the drum screen and the double-geared roller crusher.
9. The multifunctional overhead traveling crane discharging online automatic screening and crushing system according to claim 1, wherein the screw conveyor is connected with an original discharging pipe through a chute.
10. The multifunctional overhead travelling crane discharging online automatic screening and crushing system as claimed in any one of claims 1 to 9, wherein the operation method comprises the following steps:
(1) when the carbon block is filled with the furnace filler, a multifunctional overhead traveling crane operator starts a discharging online automatic screening and crushing system;
(2) the dust collector is automatically started and maintained in a delayed mode;
(3) the screw conveyer is started and maintained in an automatic time-delay mode;
(4) the double-geared roller crusher is automatically started and maintained in a delayed mode;
(5) the drum screen is started and maintained automatically in a delayed mode;
(6) the newly-installed electric discharge valve is automatically started and maintained in a delayed mode, and fillers in the filling bin are sequentially screened, crushed and conveyed by means of the gravity of the fillers and then are filled around carbon blocks in the roasting furnace;
(7) after the discharging is finished, an operator closes the discharging on-line automatic screening and crushing system;
(8) the newly-installed electric discharge valve is automatically closed and maintained in a delayed mode, the filler is intercepted, and the blanking is stopped;
(9) the drum screen automatically delays to stop and keep;
(10) the double-geared roller crusher automatically delays to stop and keep;
(11) the screw conveyer automatically delays to stop and keep;
(12) the dust collector is automatically delayed, stopped and maintained;
(13) when broken system fault of online automatic screening of multi-functional overhead traveling crane blowing, can use original blowing system emergent, promptly: when filling materials are used for charging the carbon blocks, the original discharging system is started, the original electric discharging valve is automatically opened and kept after the dust collector is automatically started in a delayed mode, the filling materials are filled around the carbon blocks in the roasting furnace along the original discharging pipe under the action of self gravity, the original discharging system is closed after discharging is completed, and the dust collector is automatically stopped in a delayed mode and kept after the original electric discharging valve is automatically closed in a delayed mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011027161.1A CN112221588B (en) | 2020-09-25 | 2020-09-25 | Multifunctional overhead traveling crane discharging online automatic screening and crushing system and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011027161.1A CN112221588B (en) | 2020-09-25 | 2020-09-25 | Multifunctional overhead traveling crane discharging online automatic screening and crushing system and operation method thereof |
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| CN112221588A true CN112221588A (en) | 2021-01-15 |
| CN112221588B CN112221588B (en) | 2022-08-05 |
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| EP1375002A1 (en) * | 2002-06-26 | 2004-01-02 | SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT | Shredder connectable to a suction plant |
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| CN109455617A (en) * | 2018-10-23 | 2019-03-12 | 河南科特尔机械制造有限公司 | A kind of filler material suction discharging overhead traveling crane for graphite refining |
| CN209565027U (en) * | 2018-12-26 | 2019-11-01 | 云南源鑫炭素有限公司 | Carbon calcination is unloaded with petroleum coke can sieving approach system |
| CN210973104U (en) * | 2019-10-10 | 2020-07-10 | 河南省碧易克实业有限公司 | Environment-friendly ash discharging device of overhead travelling crane for material suction and discharge |
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2020
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375002A1 (en) * | 2002-06-26 | 2004-01-02 | SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT | Shredder connectable to a suction plant |
| CN201140098Y (en) * | 2007-12-18 | 2008-10-29 | 沈阳铝镁设计研究院 | Torrefaction filler process system |
| CN203764375U (en) * | 2014-04-21 | 2014-08-13 | 嘉峪关索通预焙阳极有限公司 | Sieving and breaking system of petroleum coke |
| CN208449848U (en) * | 2018-05-09 | 2019-02-01 | 内蒙古霍宁碳素有限责任公司 | It is a kind of with the prebaked anode roaster furnace filler material sifter for preventing dust |
| CN109455617A (en) * | 2018-10-23 | 2019-03-12 | 河南科特尔机械制造有限公司 | A kind of filler material suction discharging overhead traveling crane for graphite refining |
| CN209565027U (en) * | 2018-12-26 | 2019-11-01 | 云南源鑫炭素有限公司 | Carbon calcination is unloaded with petroleum coke can sieving approach system |
| CN210973104U (en) * | 2019-10-10 | 2020-07-10 | 河南省碧易克实业有限公司 | Environment-friendly ash discharging device of overhead travelling crane for material suction and discharge |
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| CN112221588B (en) | 2022-08-05 |
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