CN114516522A - Metal slag collecting device and collecting method - Google Patents
Metal slag collecting device and collecting method Download PDFInfo
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- CN114516522A CN114516522A CN202210270102.XA CN202210270102A CN114516522A CN 114516522 A CN114516522 A CN 114516522A CN 202210270102 A CN202210270102 A CN 202210270102A CN 114516522 A CN114516522 A CN 114516522A
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- 239000002893 slag Substances 0.000 title claims abstract description 178
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 80
- 239000002184 metal Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000007921 spray Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 9
- 239000002436 steel type Substances 0.000 claims description 7
- 229910001339 C alloy Inorganic materials 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 description 7
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
- B65G33/16—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing with flexible screws operating in flexible tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/005—Cleaning conveyor screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/22—Cleaning devices comprising fluid applying means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a metal slag collecting device and a collecting method, wherein the metal slag collecting device comprises: a base; a drive section; the collecting part comprises a collecting box which is arranged on the base and is connected with the driving part; a connection hose connected to a side of the collection tank and communicating with the collection tank; one end of the conveying blade is arranged in the collecting box and is rotatably connected to the driving part, and the other end of the conveying blade passes through and extends out of the connecting hose; the slag suction head is rotatably connected to the other end of the conveying blade; the conveying blades are spiral, and a plurality of conveying grooves in the same direction as the spiral conveying blades are formed in the inner surfaces of the conveying blades. The invention can effectively collect the metal slag which is wet, smooth and sticky on the surface in a narrow area and is difficult to collect manually and mixed with cooling water, lubricating oil and the like by adopting the spiral conveying blade with a special angle and the plurality of conveying grooves on the spiral conveying blade.
Description
Technical Field
The invention relates to the field of metal slag recovery, in particular to a metal slag collecting device and a metal slag collecting method in a narrow area of continuous casting machine equipment.
Background
During the production of the continuous casting machine, a plurality of iron scale metal slags which fall from the casting blank exist at the bottom of the roller way and the cooling bed area of the continuous casting machine, and the iron scale metal slags can be periodically recycled and reentered into the converter to be used as high-quality scrap steel. And because the bottom equipment base is many, and the place is narrow, leans on the grab bucket machine and the electro-magnet adsorbs unable completion. In the past, the metal slag needs to be collected into a canvas bag at the bottom of equipment in a roller way and a cooling bed area by manually shoveling one by one, and then is lifted out of a loading vehicle from the bottom by a traveling vehicle and is transported away. The roller way and the cooling bed are very narrow, the height is only 2 meters, more waste water and oil stains are arranged at the bottom of the equipment, the equipment is very wet and slippery and is not ventilated, the manual operation efficiency is extremely low, and the labor intensity of operation in summer is high.
In view of the above, it is important to design and manufacture a rapid collecting device for metal slag, which can replace manual operation and improve efficiency, especially in a narrow area.
Disclosure of Invention
The invention aims to provide a metal slag collecting device and a metal slag collecting method, which have small and light shape, can replace manual work in a narrow area, have high operation efficiency, and can effectively collect metal slag with wet, smooth and sticky surfaces, mixed with cooling water, lubricating oil and the like and difficult to collect manually.
The invention is realized by adopting the following technical scheme.
In a first aspect: the invention provides a metal slag collecting device, comprising:
a base;
a drive section;
the collecting part comprises a collecting box which is arranged on the base and is connected with the driving part;
a connection hose connected to a side of the collection tank and communicating with the collection tank;
one end of the conveying blade is arranged in the collecting box and is rotatably connected to the driving part, and the other end of the conveying blade passes through and extends out of the connecting hose;
the slag suction head is rotatably connected to the other end of the conveying blade;
the conveying blades are spiral, and a plurality of conveying grooves in the same direction as the spiral conveying blades are formed in the inner surfaces of the conveying blades.
Further, the helix angle of the spiral conveying blade is 60-70 degrees.
Preferably the helix angle is 65 °.
Furthermore, the conveying blade is connected with the driving part by adopting an upper rotating bearing;
the conveying blade is connected with the slag suction head by adopting a lower rotating bearing;
preferably, the slag suction head is conical.
Further, the connecting hose is connected with a compressed air pipe,
preferably, a negative pressure environment is formed between the connecting hose and the conveying blade;
Preferably, the pressure is 2.4-2.6 MPa.
Further, the collecting part also comprises a slag discharging groove and a slag conveying pipeline;
the slag discharge groove is connected to the side part of the collecting box and communicated with the collecting box;
the slag discharge groove is communicated with the slag conveying pipeline;
the inside of the collecting box is provided with a high-pressure water spray head which can wash the metal slag entering the collecting box to enter a slag discharging groove and a slag conveying pipeline.
Further, the high-pressure water spray head is installed at an angle of 35 degrees with the collecting tank in a downward inclined mode;
preferably, the installation position of the high-pressure water spray head is 2-3 cm higher than the horizontal line of the slag discharging groove;
preferably, the high-pressure water nozzle is a flat serrated nozzle.
Further, the high-pressure water spray heads spray high-pressure water when forming an included angle of 25 degrees with the conveying blades.
Furthermore, the collecting part also comprises a slag storage hopper and a waste slag hopper, and the slag storage hopper and the waste slag hopper are arranged at the lower part of the slag conveying pipeline side by side;
the outer portion of the slag conveying pipeline is wrapped with an electromagnetic coil and used for adsorbing metal slag on the pipe wall of the slag conveying pipeline, the electromagnetic coil is powered off when the high-pressure water spray head stops at every other cycle period, the metal slag adsorbed on the outer portion of the slag conveying pipeline falls into a slag storage hopper to be collected, and sludge and waste water enter the slag storage hopper.
Furthermore, the magnetic field intensity of the electromagnetic coil is different according to different steel types of the metal slag;
controlling the magnetic field intensity of the electromagnetic coil by controlling the exciting current I;
preferably, when the steel type is medium-carbon ordinary steel, the excitation current I is 1.1-1.3A;
preferably, when the steel grade is medium-carbon alloy steel, the exciting current I is 2.2-2.4A;
preferably, when the steel type is medium-carbon special steel, the excitation current I is 4.4-4.6A;
when the steel grade is preferably high-carbon plain steel, the excitation current I is 1.5-1.7A;
when the steel grade is preferably high-carbon alloy steel, the exciting current I is 3.2-3.4A;
preferably, when the steel grade is high-carbon special steel, the exciting current I is 5.5-5.7A.
In a second aspect: the invention provides a method for collecting by using the device, which comprises the following steps:
step a: the base is lifted to a working area by a crane, and the slag suction head is inserted into the deep part of the metal slag;
step b: the switch of the driving part is turned on to drive the conveying blades to rotate in the connecting hose, and the metal slag is conveyed to the collecting part through the conveying grooves in the inner surfaces of the conveying blades to be collected.
The invention has the following beneficial effects:
the spiral conveying blade is adopted, and the metal slag has the characteristic of smooth surface, and meanwhile, the metal slag is mixed with cooling water and lubricating oil, so that the spiral conveying blade has the characteristics of being wet, smooth, small and viscous; the invention is further researched and developed for many times according to the characteristics, adopts the spiral conveying blade with a special angle, and manufactures a plurality of conveying grooves on the inner surface of the conveying blade, thereby increasing the friction force and the adhesion force of the metal slag and meeting the maximum conveying requirement.
Furthermore, the spiral angle of the spiral conveying blade is 60-70 degrees, so that the phenomenon that when the spiral angle is too small, the diameter of the conveying blade is large, the number of required spiral blades is large, and the pushing force is poor, so that high-viscosity metal slag is easy to agglomerate and block is avoided; and avoids the loss and falling of the low-viscosity metal slag caused by overlarge helical angle.
Furthermore, the connecting hose is connected with the compressed air pipe, a negative pressure environment is formed between the inside of the connecting hose and the conveying blade, and the metal slag can be adsorbed and gathered near the slag suction head and pushed to be conveyed on the conveying blade when the slag suction head is ready to work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a front view of a slag collecting apparatus according to the present invention;
FIG. 2 is a top view of the dross collecting apparatus of the invention;
FIG. 3 is a left side view of the dross collecting device of the invention;
FIG. 4 is a schematic view of a conveying trough of the present invention positioned on the inner surface of a conveying blade;
FIG. 5 is a cross-sectional view of the high pressure water jet head of the present invention;
FIG. 6 is a front view of a high pressure water jet nozzle of the present invention.
An icon: 1-a base; 2-high pressure water spray head; 3, a motor; 4-motor pulley; 5-a belt; 6-blade drive pulley; 7-upper rotating bearing; 8, a collecting box; 9-conveying blades; 10-a slag discharge groove; 11-connecting a hose; 12-an electromagnetic coil; 13-a slag transport pipeline; 14-a slag storage hopper; 15-a waste residue hopper; 16-lower rotational bearing; 17-a slag suction head; 18-a conveying trough; 19-serrated nozzles.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
The metallic slag collecting device shown in fig. 1 to 6 includes: a base 1; a drive section; the collecting part comprises a collecting box 8, and the collecting box 8 is arranged on the base 1 and is connected with the driving part; a connection hose 11 connected to a side of the collection tank 8 and communicating with the collection tank 8; a conveying blade 9, one end of which is arranged in the collecting box 8 and is rotatably connected to the driving part, and the other end of which passes through and extends out of the connecting hose 11; a slag suction head 17 connected to the other end of the conveying blade 9; the conveying blade 9 is spiral, and a plurality of conveying grooves 18 in the same direction as the spiral conveying blade 9 are arranged on the inner surface of the conveying blade 9.
The base 1 is used for installing equipment for collecting metal slag and can be designed into a frame trolley structure, and the structure and the size of the base can be correspondingly adjusted along with a working area, particularly when the base works in a working space in a narrow area; universal wheels are arranged around the bottom of the frame trolley to facilitate movement; the top of the frame trolley is welded with a lifting lug, and the lifting lug can be lifted to the position close to a working area for adsorbing the metal slag by a travelling crane; one side of the frame trolley is provided with a handrail for pushing a trolley so as to move the trolley in the process of collecting the metal slag and collect the metal slag at different positions; the upper surface of the base 1 is provided with a working platform, and the driving part and the collecting part are positioned on the working platform.
In the above embodiment, a lightweight galvanized pipe may be used for manufacturing the frame trolley, and a galvanized pipe with an inner diameter of 20 mm may be used.
The driving part comprises a motor 3, a motor belt pulley 4, a belt 5 and a blade driving belt pulley 6; the blade driving belt pulley 6 is rotatably connected with the conveying blade 9, the other end of the conveying blade 9 penetrates through the connecting hose 11 and extends out, and the slag suction head 17 is rotatably connected with the other end of the conveying blade.
In the above embodiment, the starting motor 3 is rotated, connected to the motor pulley 4, the belt 5, and the blade driving pulley 6, and drives the conveying blade 9 to rotate in the connecting hose 11.
In the above embodiment, the conveying blade 9 may be connected to the driving portion through the upper rotary bearing 7, and specifically, the conveying blade 9 and the blade driving pulley 6 are connected through the upper rotary bearing 7.
In the above embodiment, the conveying blade 9 may be connected to the slag suction head 17 through a lower rotary bearing 16; preferably, the slag suction head 17 is conical.
In the above embodiment, the lengths of the connecting hose 11 and the conveying blade 9 can be changed according to the requirements of the work site to adapt to the requirements of different work areas; preferably, the conveying blade 9 passes through the connecting hose 11 and is connected with the slag suction head 17 when extending out for 20 cm.
Because the metal slag has the characteristic of smooth surface, and meanwhile, the metal slag is mixed with cooling water and lubricating oil, the metal slag has the characteristics of being wet and smooth, small in groups and viscous, and common conveying belts and conveying chains cannot convey and collect the metal slag normally. According to the invention, the viscosity of the metal slag can be divided into low-viscosity, medium-viscosity and high-viscosity metal slag through chemical analysis according to the difference of smelting steel seed components, steel seed density and lubricating oil content. The common spiral conveying blade cannot meet the requirement due to being too smooth, and the applicability of the common spiral conveying blade must be improved according to the viscosity property of the metal slag.
The conveying blades are spiral, and the inner surfaces of the conveying blades 9 are provided with a plurality of conveying grooves 18 which are in the same direction as the conveying blades 9, so that the friction force and the metal slag adhesion force can be increased, the phenomenon that the conveying of low-viscosity metal slag reduces flow is avoided, and the maximum conveying requirement is met.
In the above embodiment, the conveying grooves 18 are designed to be at least 3; the conveying grooves are 1 cm in width, 2 cm in depth and 2 cm in distance.
In the above embodiment, the side of the conveying blade 9 close to the connecting hose 11 is smooth, so as to avoid friction damage to the connecting hose 11.
The helical angle of the helical conveying blade is 60-70 degrees.
According to the characteristics of the metal slag, the spiral conveying blade with a special angle is found to be beneficial to quickly collecting the metal slag through multiple research and development.
The inventor finds that the bearing performance of the helical blade under different angles is tested, and particularly as shown in table 1, when the inclination angle is smaller than 60 degrees, the diameter of the conveying blade is large, the number of the required blades is large, the propelling force is poor, and high-viscosity metal slag is easy to agglomerate to form blockage, so that the helical blade rotates, and the metal slag is blocked slightly. When the inclination angle is larger than 70 degrees, the problems are solved, and the low-viscosity metal slag is lost and falls below the blades due to the overlarge inclination angle of the blades. Therefore, the conveying blade 9 is set to be between 60 degrees and 70 degrees.
It is further preferred that the helix angle is 65 °.
TABLE 1 comparison of the bearing characteristics of the helical blades at different angles
| Angle setting | Low viscosity | Middle viscosity | High viscosity |
| ≦ 40 degree | Good taste | Slightly conglobated | More conglomerates |
| 50-60 degrees | Slightly flowing less | Have the advantage of agglomeration | Slightly conglobated |
| 60-70 degrees | Slightly flowing less | Without agglomeration | Without agglomeration |
| 70 degree ≧ | Run off | Without agglomeration | Without agglomeration |
In a preferred embodiment, the connection hose 11 is connected to a compressed air pipe (not shown in the figure), and a negative pressure environment is formed between the connection hose and the conveying blade; when the compressed air is started, the metal slag scattered around the slag suction head 17 can be sucked, and the metal slag is adsorbed to the slag suction head 17 and is conveyed upwards to the collection part through the conveying grooves 18 of the conveying blades 9.
Preferably, the pressure is 2.4-2.6 MPa.
The collecting part further comprises a slag discharging groove 10 and a slag conveying pipeline 13, the slag discharging groove 10 is connected to the side part of the collecting box 8 and communicated with the collecting box 8, and the slag discharging groove 10 is communicated with the slag conveying pipeline 13; the high-pressure water spray head 2 is arranged in the collecting box 8, and can wash the metal slag entering the collecting box 8 to enter the slag discharging groove 10 and the slag conveying pipeline 13.
In the above embodiment, the metal slag enters the collection tank 8, is washed into the slag discharge groove 10 by opening the high pressure water spray head 2, and is collected and electromagnetically screened through the slag transport pipeline 13.
The high-pressure water spray head 2 is installed at an angle of 35 degrees with the collecting tank in a downward inclined mode.
The inventor passes through on-the-spot many times of experiments, and its mounted position is in the position that is higher by a little 2 ~ 3 centimetres directly opposite to the level line of slag chute 10, and when conveying blade 9 was the heliciform and rises, its outer fringe just was the parallel and level with slag chute 10.
In the above embodiment, the high-pressure water nozzles 2 jet high-pressure water when forming an angle of 25 degrees with the conveying blades 9, so that the metal slag on the conveying blades 9 can be flushed into the slag discharging groove 10.
In the above embodiment, in order to increase the jetting ability of the high pressure water jet 2, the high pressure water jet 2 is a flat zigzag nozzle, which not only has a large water pressure, but also can keep a fine water column of water flow without scattering, and the jet is fastened, so that the practical application effect is very practical.
The collecting part also comprises a slag storage hopper 14 and a waste slag hopper 15, and the slag storage hopper 14 and the waste slag hopper 15 are arranged at the lower part of the slag conveying pipeline 13 side by side;
the electromagnetic coil 12 is wrapped outside the slag conveying pipeline 13 and used for adsorbing metal slag on the pipe wall of the slag conveying pipeline 13, the high-pressure water spray head 2 stops at every other cycle, the electromagnetic coil 13 is powered off, the metal slag adsorbed outside the slag conveying pipeline 13 falls into the slag storage hopper 14 to be collected, and sludge and wastewater enter the waste slag hopper 15.
In the above embodiment, the metal slag is conveyed to the slag conveying pipeline 13 along the slag discharging groove 10, and since the electromagnetic coil 12 is wrapped outside the slag conveying pipeline 13, the electromagnetic coil 12 generates an electromagnetic field after being electrified, the metal slag is adsorbed on the pipe wall of the slag conveying pipeline 13, and the sludge flows into the waste slag hopper 15 at the lower part from the small hole at the bottom of the slag discharging groove 10 along with water flow. The pipe wall of the slag conveying pipeline 13 is fully adsorbed with the metal slag to form a working period, after the working period, the high-pressure water spray head 2 is stopped, the electromagnetic coil 13 is powered off, and the metal slag falls into the slag storage hopper 14. The metal slag, the waste water and the sludge are circularly screened and separated by continuously repeating the process.
In the above embodiment, a duty cycle is preferably 10 to 12 min.
In the above embodiment, the magnetic field intensity of the electromagnetic coil differs according to the type of steel to which the slag belongs.
In order to prevent the metal slag from being magnetized and wasting electric energy due to overlarge magnetic force and to meet the complete adsorption and separation principle, the metal structure (containing special metals such as manganese, chromium, zinc and the like) of the metal slag is not easy to be electromagnetically adsorbed on the slag conveying pipeline 13; according to the electromagnetic induction principle and the metal components of the metal slag, the magnetic field intensity of the electromagnetic coil is controlled by controlling the exciting current I.
The calculation formula of the magnetic field intensity is as follows:
H＝N×I/Le
wherein, H is the magnetic field intensity, and the unit is A/m; n is the number of turns of the excitation coil; i is the measured value of the exciting current in unit A; le is the effective magnetic path length of the slag conveying pipeline, and the unit is m.
In the above embodiment, the exciting current I is provided to the dc converter, and by changing the exciting currents with different values output by the dc converter, the magnetic field strength of each group of electromagnetic coils can be increased and decreased, so as to effectively adsorb the metal slag, and the magnetic field strength can be adjusted according to the metal slag with different steel type components.
In the above embodiment, the number of turns N of the exciting coil is set to 200 turns, and the effective magnetic path length Le of the slag transporting pipe is 0.5 m.
Preferably, when the steel type is medium-carbon ordinary steel, the excitation current I is 1.1-1.3A;
preferably, when the steel grade is medium-carbon alloy steel, the exciting current I is 2.2-2.4A;
when the steel grade is preferably medium-carbon special steel, the exciting current I is 4.4-4.6A;
when the steel grade is preferably high-carbon ordinary steel, the exciting current I is 1.5-1.7A;
when the steel grade is preferably high-carbon alloy steel, the exciting current I is 3.2-3.4A;
preferably, when the steel grade is high-carbon special steel, the exciting current I is 5.5-5.7A.
Through field tests and verification, the positive and negative difference value of the actual exciting current value I of different steel grades is +/-0.5A.
The invention further verifies the bearing performance of the spiral conveying blade 9 on the metal slag collecting device in the negative pressure environment with or without a conveying groove and a compressed air pipe through experiments, and the bearing performance is specifically shown in the table 2.
TABLE 2 Collection Performance under different conditions
The invention provides a method for collecting by using the metal slag collecting device, which comprises the following steps:
step a: the base is lifted to a working area by a crane, and the slag suction head is inserted into the deep part of the metal slag;
step b: the switch of the driving part is turned on to drive the conveying blades to rotate in the connecting hose, and the metal slag is conveyed to the collecting part through the conveying grooves in the inner surfaces of the conveying blades to be collected.
The specific implementation mode is as follows: hoisting the base 1 to a working area by a travelling crane, switching on a power supply to a motor electric cabinet, and switching on compressed air to a valve inlet on a pipeline; the slag suction head 17 is hung down to the metal slag, a compressed air valve is opened, the pressure is adjusted, and the nearby metal slag is adsorbed to the periphery of the slag suction head 17 to form a small pile; the motor 3 is started, the motor belt pulley 4 rotates the belt 5 to drive the blade driving belt pulley 6 to rotate the conveying blade 9 clockwise through the upper rotating bearing 7 and the lower rotating bearing 16, and after the conveying blade 9 rotates clockwise, the metal slag on the ground gradually moves up to the collecting box 8 along the connecting hose 11.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A metal slag collecting device, comprising:
a base;
a drive section;
the collecting part comprises a collecting box which is arranged on the base and is connected with the driving part;
a connection hose connected to a side of the collection tank and communicating with the collection tank;
one end of the conveying blade is arranged in the collecting box and is rotatably connected to the driving part, and the other end of the conveying blade passes through and extends out of the connecting hose;
the slag suction head is rotatably connected to the other end of the conveying blade;
the conveying blades are spiral, and a plurality of conveying grooves in the same direction as the spiral conveying blades are formed in the inner surfaces of the conveying blades.
2. The dross collecting device of claim 1, wherein the helical conveying blades have a helix angle of 60 to 70 °;
Preferably the helix angle is 65 °.
3. The dross collecting device of claim 1,
the conveying blade is connected with the driving part by adopting an upper rotating bearing;
the conveying blade is connected with the slag suction head by adopting a lower rotating bearing;
preferably, the slag suction head is conical.
4. The dross collecting device of claim 1, wherein the connection hose is connected to a compressed air pipe,
preferably, a negative pressure environment is formed between the connecting hose and the conveying blade;
preferably, the pressure is 2.4-2.6 MPa.
5. The metallic slag collecting device according to claim 1, wherein the collecting part further comprises a slag discharge groove and a slag transport pipe;
the slag discharge groove is connected to the side part of the collecting box and communicated with the collecting box;
the slag discharging groove is communicated with the slag conveying pipeline;
the inside of the collecting box is provided with a high-pressure water nozzle which can wash the metal slag entering the collecting box into a slag discharging groove and a slag conveying pipeline.
6. The dross collecting device of claim 5, wherein the high pressure water jets are mounted at an angle of 35 ° downward from the collecting box;
preferably, the installation position of the high-pressure water spray head is 2-3 cm higher than the horizontal line of the slag discharging groove;
Preferably, the high-pressure water nozzle is a flat serrated nozzle.
7. The dross collecting device of claim 6, wherein the high pressure water jets spray high pressure water at an angle of 25 ° to the conveyor blades.
8. The metal slag collecting device according to claim 5, wherein the collecting part further comprises a slag storage hopper and a slag hopper, and the slag storage hopper and the slag hopper are arranged at the lower part of the slag conveying pipeline side by side;
the outer portion of the slag conveying pipeline is wrapped with an electromagnetic coil and used for adsorbing metal slag on the pipe wall of the slag conveying pipeline, the electromagnetic coil is powered off when the high-pressure water spray head stops at every other cycle period, the metal slag adsorbed on the outer portion of the slag conveying pipeline falls into a slag storage hopper to be collected, and sludge and waste water enter the slag storage hopper.
9. The slag collecting device according to claim 8, wherein the electromagnetic coil has a different magnetic field intensity according to the type of steel to which the slag belongs;
controlling the magnetic field intensity of the electromagnetic coil by controlling the exciting current I;
preferably, when the steel type is medium-carbon ordinary steel, the excitation current I is 1.1-1.3A;
preferably, when the steel grade is medium-carbon alloy steel, the exciting current I is 2.2-2.4A;
Preferably, when the steel type is medium-carbon special steel, the excitation current I is 4.4-4.6A;
when the steel grade is preferably high-carbon plain steel, the excitation current I is 1.5-1.7A;
when the steel grade is preferably high-carbon alloy steel, the exciting current I is 3.2-3.4A;
preferably, when the steel grade is high-carbon special steel, the excitation current I is 5.5-5.7A.
10. A method of collecting by a metallic slag collecting device according to any one of claims 1 to 9, comprising the steps of:
a, step a: the base is lifted to a working area by a crane, and the slag suction head is inserted into the deep part of the metal slag;
step b: the switch of the driving part is turned on to drive the conveying blades to rotate in the connecting hose, and the metal slag is conveyed to the collecting part through the conveying grooves in the inner surfaces of the conveying blades to be collected.
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| CN114516522B (en) | 2023-12-01 |
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