CN110775641A - Pneumatic conveying device for copper smelting mixed dry concentrate - Google Patents

Pneumatic conveying device for copper smelting mixed dry concentrate Download PDF

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Publication number
CN110775641A
CN110775641A CN201910958714.6A CN201910958714A CN110775641A CN 110775641 A CN110775641 A CN 110775641A CN 201910958714 A CN201910958714 A CN 201910958714A CN 110775641 A CN110775641 A CN 110775641A
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CN
China
Prior art keywords
valve
elbow
air inlet
pipeline
shoulder
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.)
Granted
Application number
CN201910958714.6A
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Chinese (zh)
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CN110775641B (en
Inventor
秦跃文
卢军成
付建琪
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.)
Jinchuan Guangxi Nonferrous Pioneer Metals Corp
Jinchuan Group Co Ltd
Original Assignee
Jinchuan Guangxi Nonferrous Pioneer Metals Corp
Jinchuan Group Co Ltd
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Application filed by Jinchuan Guangxi Nonferrous Pioneer Metals Corp, Jinchuan Group Co Ltd filed Critical Jinchuan Guangxi Nonferrous Pioneer Metals Corp
Priority to CN201910958714.6A priority Critical patent/CN110775641B/en
Publication of CN110775641A publication Critical patent/CN110775641A/en
Application granted granted Critical
Publication of CN110775641B publication Critical patent/CN110775641B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/16Gas pressure systems operating with fluidisation of the materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/36Arrangements of containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34Details
    • B65G53/52Adaptations of pipes or tubes

Abstract

The invention provides a pneumatic conveying device for mixed dry concentrate during copper smelting, which synchronously performs air supply by pressing down a shoulder and air supply by blowing at the bottom, is combined with a check valve, ensures that bottom blowing materials cannot flow back to the interior of a tank body in the blowing process, and simultaneously, a fluidization assembly is arranged on a bottom discharge elbow to fluidize the conveyed materials, so that the materials are prevented from scouring the tank body and blocking the elbow, and the bottom conveying materials are ensured to be stably and continuously discharged to the bottom elbow. The invention overcomes the defects of tank body abrasion and unsmooth discharging, and has convenient maintenance and simple operation.

Description

Pneumatic conveying device for copper smelting mixed dry concentrate
Technical Field
The invention belongs to the technical field of dry-based material pneumatic conveying devices, and particularly relates to a copper smelting mixed dry concentrate pneumatic conveying device.
Background
In the existing pneumatic conveying technology, when the granularity and various material ratios of mixed dry base materials (hereinafter referred to as mixed dry concentrate materials) which are generated in a copper smelting flash furnace system and consist of copper concentrate, slag concentrate, quartz sand and converting slag change, the phenomena of material blockage, pipeline elbow, soft connection and serious valve abrasion are easily generated; the mixed dry concentrate conveying device in the traditional copper smelting flash furnace system adopts an upward-leading bin pump or a downward-leading bin pump, and the delivery pipeline elbow, the flexible connection, the fluidized bed, the pump body and the like of the upward-leading bin pump are easy to erode and wear seriously by materials; the down-leading type bin pump is easy to block pipes, the elbow is abraded, the blanking is slow, and the high-load stable production of the copper smelting flash furnace system is seriously influenced.
Disclosure of Invention
Aiming at the problems of serious abrasion and slow blanking of the existing copper smelting mixed dry concentrate conveying device, the invention provides a pneumatic conveying device for copper smelting mixed dry concentrate.
The invention is realized by the following technical scheme:
a pneumatic conveying device for copper smelting mixed dry concentrate comprises a feeding pipeline, a manual gate valve, a pneumatic feeding valve and a tank body which are connected from top to bottom; the manual gate valve and the pneumatic feed valve are arranged on the pipe body of the feed pipeline.
The shoulder part of the tank body is provided with an exhaust pipeline, a safety valve and a shoulder air inlet valve; the exhaust pipeline is connected with the exhaust flexible connection through an exhaust valve.
The exhaust pipeline can also be connected with the air inlet of the elbow, so that the phenomenon that partial materials are condensed in the exhaust pipeline to be attached to the pipe wall and form a secondary pipe blockage due to the fact that the gas in the tank body is long after the discharge valve is closed after conveying is avoided, and meanwhile the phenomenon that the feeding speed is influenced due to the fact that an existing down-leading type bin pump is free of an exhaust pipe is avoided.
The tank wall of the tank body is provided with supporting legs, and the bottom of the tank body is provided with an elbow in a connecting way.
The elbow bottom and discharge gate articulate, be equipped with the air inlet in the elbow main part.
The shoulder air inlet valve is communicated with the air inlet through an air transmission pipeline; the gas transmission pipeline is also provided with check valves at the positions close to the shoulder gas inlet valve and the gas inlet.
The check valve can ensure the pressure balance in each branch gas transmission pipeline and prevent the materials from reversely crossing the gas transmission pipeline, thereby ensuring the stable transmission of the materials.
The upper part of the bottom elbow is also provided with a fluidization component positioned in the tank body, and the air inlet end of the fluidization component is connected with an air inlet pipeline.
The gas transmission pipeline is provided with a main gas inlet pneumatic ball valve and a shoulder angle seat valve on a pipe body between the check valves respectively, and the pipe body between the main gas inlet pneumatic ball valve and the shoulder angle seat valve is connected with a gas transmission main pipe.
And the gas transmission main pipe is sequentially connected with a filter and a manual ball valve.
The pneumatic conveying device adopts shoulder air inlet to press down materials, bottom air blowing and discharging are carried out, the shoulder air inlet and the bottom air blowing inlet are opened synchronously, and the check valve is arranged on the air conveying pipeline, so that the bottom air blowing materials are prevented from returning air to the interior of the tank body to be mixed and flow in the blowing process, the materials are prevented from scouring the tank body, and meanwhile, the bottom discharging is fluidized through the fluidizing component, and the bottom conveying materials are ensured to be stably and continuously fed to the bottom elbow; the invention completely meets the requirements of fast feeding and continuous and stable dense phase material conveying required by a copper smelting flash furnace, and meanwhile, the stable dense phase conveying reduces the abrasion speed of pipelines, flexible connections, valves and the like, thereby reducing the maintenance and overhaul cost.
The sealing pressure of the connected fluidization group is not lower than 1.0 MPa. The fluidization assembly is composed of a check valve, an air inlet pipe and a connecting thread short joint, the sealing pressure after connection is not lower than 1.0MPa, and the fluidization assembly is used for fluidizing materials in the process of conveying the materials to the elbow, so that the elbow blockage caused by the material fluffing inside the pump body is avoided.
As a further improvement of the invention, the air inlet on the elbow is arranged on the main body of the elbow 2 at the side far away from the discharge port joint.
The air inlet sets up in keeping away from the elbow main part that the discharge gate connects one side for the bottom is blown and is unanimous with ejection of compact direction, promotes the material and flows out, has avoided the bottom to blow and has leaded to the material to blow back to the internal defect that leads to the jam of jar.
As a further improvement of the invention, the filter is of a similar Y-shaped structure, and a filter screen is arranged in the internal filter cylinder; for removing impurities from the conveying gas to protect the shoulder main inlet pneumatic ball valve, the shoulder angle seat valve and the check valve.
When gas enters the filter, the filter cartridge with a filter screen of a certain specification is arranged in the filter, impurities are blocked, the filtered gas is discharged from the outlet of the filter, when the gas needs to be cleaned, the detachable filter screen is taken out, the gas is re-filled after treatment, and the gas filter is very convenient to maintain.
As a further improvement of the invention, a hydraulic weighing device is arranged on the supporting piece.
The hydraulic weighing device can monitor the weight of the materials in the tank body in real time, find the blockage condition of the materials in advance to make corresponding countermeasures, and improve the safety of material conveying.
The invention has the beneficial effects that:
1. the pneumatic conveying device adopts the synchronous opening of the shoulder downward-pressing air supply and the bottom blowing air supply, so that the mixed dry concentrate can be quickly, continuously and stably conveyed in a concentrated phase, the abrasion of the mixed dry concentrate on a pipeline, a flexible connection and a valve is reduced, the service life of the pneumatic conveying device is prolonged, and the maintenance cost is reduced.
2. Before the bottom of the pneumatic conveying device discharges materials, the mixed dry concentrate is fluidized by the fluidizing component, so that the stability of material conveying is further improved, and the abrasion of the materials to the device is reduced.
3. The pneumatic conveying device is provided with the safety valve and the check valves at multiple positions, so that the stability of the air pressure of the whole device is ensured, the phenomenon that materials flow back to a gas conveying pipeline is avoided, and the safety of the device is improved.
4. The pneumatic conveying device provided by the invention overcomes the problems that in the traditional copper smelting flash furnace system, an upward-leading bin pump is adopted for conveying, pipeline elbows, flexible connections, a fluidized bed, a pump body and the like are easy to scour and wear seriously by materials, and a downward-leading bin pump is adopted for conveying, so that the problems of pipe blockage, elbow wear and slow blanking are easy to occur, and the high-load stable production of the copper smelting flash furnace system is seriously influenced, so that the downward-leading bin pump is used for quickly, continuously and stably conveying mixed dry concentrate in a concentrated phase, and the abrasion of the device can not be caused.
Drawings
Fig. 1 is a schematic structural view of the pneumatic conveying device of the present invention.
Reference numerals: 1-discharge port joint, 2-elbow, 3-main air inlet pneumatic ball valve, 4-filter, 5-manual ball valve, 6-shoulder angle seat valve, 7-check valve, 8-safety valve, 9-pneumatic feed valve, 10-manual gate valve, 11-exhaust flexible connection, 12-exhaust valve, 13-tank, 14-weighing module, 15-fluidization component, 16-exhaust pipeline, 17-feed pipeline, 18-shoulder air inlet valve, 19-supporting leg, 20-air inlet, 21-air transmission pipeline and 22-air transmission main pipe.
Detailed Description
The invention will be further explained with reference to the drawings.
Example 1
A pneumatic conveying device for copper smelting mixed dry concentrate, as shown in figure 1,
comprises a feeding pipeline 17, a manual gate valve 10, a pneumatic feeding valve 9 and a tank body 13 which are connected from top to bottom; the manual gate valve 10 and the pneumatic feeding valve 9 are arranged on the pipe body of the feeding pipeline 17; the pneumatic feeding valve 9 is cast by adopting a wear-resistant ceramic material, the valve is connected with the tank body 13 by adopting a bolt, and a sealing surface is sealed by combining a high-pressure asbestos rubber plate and a sealant, so that the sealing property of the tank body 13 is ensured.
The shoulder of the tank 13 is provided with an exhaust duct 16, a safety valve 8 and a shoulder intake valve 18.
The exhaust pipeline 16 is connected with the exhaust flexible joint 11 through an exhaust valve 12; the flexible exhaust connection 11 can also be connected with the air inlet 20 of the elbow 2, so that the phenomenon that partial materials are condensed in the exhaust pipeline to be attached to the pipe wall in a Cao to form a secondary pipe blockage due to the fact that the gas in the tank body is long after the discharge valve is closed after conveying is finished is avoided, and meanwhile, the phenomenon that the feeding speed is influenced due to the fact that an existing down-leading type bin pump is free of an exhaust pipe is avoided.
The shoulder air inlet valve 18 is communicated with the air inlet 20 through an air transmission pipeline 21; the gas transmission pipeline 21 is also provided with a check valve 7 near the shoulder gas inlet valve 18 and the gas inlet 20 respectively.
The shoulder air inlet valve 18 applies downward force to the materials in the tank body, the shoulder angle seat valve 6 for controlling the air inlet of the shoulder air inlet valve 18 and the main air inlet pneumatic ball valve 3 are opened synchronously, so that the shoulder air inlet valve 18 presses the air inlet and blows air at the bottom of the air inlet 20 at the same time, the materials quickly flow to the elbow at the bottom of the tank body 13 under the pushing of the pressed air inlet, and the materials can be discharged more quickly after the air inlet 20 is further blown and conveyed.
The gas transmission pipeline 21 is provided with a main gas inlet pneumatic ball valve 3 and a shoulder angle seat valve 6 on a pipe body between the check valves 7 respectively, and the pipe body between the main gas inlet pneumatic ball valve 3 and the shoulder angle seat valve 6 is connected with a gas transmission main pipe 22; the gas transmission main pipe 22 is sequentially connected with a filter 4 and a manual ball valve 5, the filter 4 is of a Y-shaped structure, the main body is made of WCB, and a filter screen is arranged in an internal filter cylinder; for removing impurities from the feed gas to protect the shoulder main inlet pneumatic ball valve 3, the shoulder angle seat valve 6 and the check valve 7.
Supporting legs 19 are arranged on the tank wall of the tank body 13, and a hydraulic weighing device 14 is arranged on the supporting members 19, so that the weight of materials in the tank body can be monitored in real time, the situation of material blockage is found in advance to make corresponding measures, and the safety of material conveying is improved.
The bottom of the tank body 13 is connected with an elbow 2, the elbow 2 is an airtight pressure casting, air holes and shrinkage porosity cannot occur in the casting process, and the material is QT 500-7; the bottom of the elbow 2 is connected with the discharge port joint 1, the discharge port joint 1 is composed of flexible rubber and a steel flange, and is connected with the elbow 2 and the conveying pipeline in a flexible connection mode, so that slight vibration of the equipment body during working is prevented from being connected with the pipeline; be equipped with air inlet 20 in the elbow 2 main part, air inlet 20 sets up in keeping away from the discharge gate and connect 2 main parts of elbow of 1 one side for the bottom is blown and is unanimous with ejection of compact direction, promotes the material and flows out, has avoided the bottom to blow and leads to the material to blow back to the defect that leads to the jam in the jar body.
The upper part of the bottom elbow 2 is also provided with a fluidization component 15 positioned in the tank body 13, and the air inlet end of the fluidization component 15 is connected with an air inlet pipeline 21; the fluidization component 15 consists of a check valve, an air inlet pipe and a connecting threaded short joint, and the sealing pressure after connection is not lower than 1.0 MPa; the material fluidization device is used for fluidizing materials in the process of conveying the materials to the elbow 2, and avoiding blockage of the elbow 2 caused by the materials in the pump body.
The pneumatic conveying device of the embodiment adopts shoulder air intake to press down materials, bottom air blowing discharging, shoulder air compression and bottom air blowing are opened synchronously, and the check valve 7 is installed on the air conveying pipeline 21, so that the bottom air blowing materials can not flow in a mixed mode to the air returning materials inside the tank body 13 in the blowing process, the materials are prevented from scouring the tank body 13, meanwhile, the bottom discharging materials are fluidized through the fluidization assembly 15, stable and continuous feeding to the bottom elbow 2 of the bottom conveying materials is ensured, the requirements of quick feeding and continuous and stable dense phase conveying materials required by a copper smelting flash furnace are completely met, meanwhile, stable dense phase conveying reduces the abrasion speed of pipelines, flexible connections, valves and the like, and further, the maintenance cost is reduced.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made thereto by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should be considered as falling within the scope of the present invention.

Claims (4)

1. The utility model provides a copper smelting mixes dry concentrate pneumatic conveyor which characterized in that:
comprises a feeding pipeline (17), a manual gate valve (10), a pneumatic feeding valve (9) and a tank body (13) which are connected from top to bottom; the manual gate valve (10) and the pneumatic feeding valve (9) are arranged on a pipe body of the feeding pipeline (17);
the shoulder of the tank body (13) is provided with an exhaust pipeline (16), a safety valve (8) and a shoulder air inlet valve (18); the exhaust pipeline (16) is connected with the exhaust soft connection (11) through an exhaust valve (12);
the supporting legs (19) are arranged on the tank wall of the tank body (13), and the bottom of the tank body is connected with the elbow (2);
the bottom of the elbow (2) is connected with the discharge port joint (1), and an air inlet (20) is arranged on the elbow (2) main body;
the shoulder air inlet valve (18) is communicated with the air inlet (20) through an air transmission pipeline (21); the gas transmission pipeline (21) is also provided with a check valve (7) close to the shoulder gas inlet valve (18) and the gas inlet (20);
the upper part of the bottom elbow (2) is also provided with a fluidization component (15) positioned in the tank body (13), and the air inlet end of the fluidization component (15) is connected with an air inlet pipeline (21);
the gas transmission pipeline (21) is provided with a main gas inlet pneumatic ball valve (3) and a shoulder angle seat valve (6) on a pipe body between the check valves (7), and the pipe body between the main gas inlet pneumatic ball valve (3) and the shoulder angle seat valve (6) is connected with a gas transmission main pipe (22);
the gas transmission main pipe (22) is sequentially connected with a filter (4) and a manual ball valve (5).
2. The pneumatic conveying device for the copper smelting mixed dry concentrate according to claim 1, characterized in that: the air inlet (20) on the elbow (2) is arranged on the elbow (2) main body far away from one side of the discharge port joint (1).
3. The pneumatic conveying device for copper smelting mixed dry concentrate according to claim 1 or 2, characterized in that: the filter (4) is of a Y-like structure, and a filter screen is arranged in the inner filter cylinder.
4. The pneumatic conveying device for the copper smelting mixed dry concentrate according to claim 3, characterized in that: and a hydraulic weighing device (14) is arranged on the supporting piece (19).
CN201910958714.6A 2019-10-10 2019-10-10 Pneumatic conveying device for copper smelting mixed dry concentrate Active CN110775641B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910958714.6A CN110775641B (en) 2019-10-10 2019-10-10 Pneumatic conveying device for copper smelting mixed dry concentrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910958714.6A CN110775641B (en) 2019-10-10 2019-10-10 Pneumatic conveying device for copper smelting mixed dry concentrate

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CN110775641A true CN110775641A (en) 2020-02-11
CN110775641B CN110775641B (en) 2021-09-07

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111492A (en) * 1976-02-03 1978-09-05 Joseph Mraz Pneumatic conveying apparatus and method
CN85200147U (en) * 1985-04-01 1986-02-19 南京工学院 Residue extractional device for pressure fluidizing furnace
CN2173768Y (en) * 1993-09-01 1994-08-10 邱瑞东 High-efficiency air jet pump
CN202387562U (en) * 2011-11-21 2012-08-22 济南钢铁股份有限公司 Dedusting and ash-conveying device of sintering machine head
CN202464788U (en) * 2011-12-20 2012-10-03 济南钢铁股份有限公司 Bottom fluidizing type pneumatic transmission bin pump
CN202529571U (en) * 2012-03-23 2012-11-14 济南煜龙气力输送设备有限公司 Gravimetric pulse pneumatic conveyor
CN203392494U (en) * 2013-08-07 2014-01-15 南京艾尔康威物料输送系统有限公司 Dense-phase conveying pump with fluidization air cone
CN205347351U (en) * 2016-01-28 2016-06-29 济南黄台煤气炉有限公司 Defeated grey house steward's of gas producer anti -clogging device
CN205652833U (en) * 2016-04-13 2016-10-19 营口创世纪环保科技有限公司 Pneumatic conveyor
CN209427731U (en) * 2018-12-14 2019-09-24 南京艾尔康威物料输送系统有限公司 A kind of storehouse pump for the conveying of tin flue dust

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111492A (en) * 1976-02-03 1978-09-05 Joseph Mraz Pneumatic conveying apparatus and method
CN85200147U (en) * 1985-04-01 1986-02-19 南京工学院 Residue extractional device for pressure fluidizing furnace
CN2173768Y (en) * 1993-09-01 1994-08-10 邱瑞东 High-efficiency air jet pump
CN202387562U (en) * 2011-11-21 2012-08-22 济南钢铁股份有限公司 Dedusting and ash-conveying device of sintering machine head
CN202464788U (en) * 2011-12-20 2012-10-03 济南钢铁股份有限公司 Bottom fluidizing type pneumatic transmission bin pump
CN202529571U (en) * 2012-03-23 2012-11-14 济南煜龙气力输送设备有限公司 Gravimetric pulse pneumatic conveyor
CN203392494U (en) * 2013-08-07 2014-01-15 南京艾尔康威物料输送系统有限公司 Dense-phase conveying pump with fluidization air cone
CN205347351U (en) * 2016-01-28 2016-06-29 济南黄台煤气炉有限公司 Defeated grey house steward's of gas producer anti -clogging device
CN205652833U (en) * 2016-04-13 2016-10-19 营口创世纪环保科技有限公司 Pneumatic conveyor
CN209427731U (en) * 2018-12-14 2019-09-24 南京艾尔康威物料输送系统有限公司 A kind of storehouse pump for the conveying of tin flue dust

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Inventor after: Liu Ming

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