CN113526180A - Method for modifying controllable flow material transfer system - Google Patents
Method for modifying controllable flow material transfer system Download PDFInfo
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- CN113526180A CN113526180A CN202010314764.3A CN202010314764A CN113526180A CN 113526180 A CN113526180 A CN 113526180A CN 202010314764 A CN202010314764 A CN 202010314764A CN 113526180 A CN113526180 A CN 113526180A
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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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
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Abstract
The invention provides a method for modifying a controllable flow material transfer system, and relates to the technical field of material transfer equipment. The transformation method of the controllable flow material transfer system comprises the transformation of an upper shield of a head of a belt conveyor, the transformation of a lower shield of the head of the belt conveyor, the transformation of a bulk material collecting device, the transformation of a transfer chute, the transformation of the abrasion resistance of the transfer chute, the transformation of a material receiving mechanism and the transformation of a guide chute. The improvement is carried out through various configurations to two or many present belt feeder material transportation in-process for equipment operation is more reliable, and the raise dust is effectively handled, reduces the accident rate, increases belt life, thereby promotes steel enterprise's belt feeder conveying efficiency to the at utmost, is the important component part of present steel enterprise energy saving and consumption reduction transformation.
Description
Technical Field
The invention relates to the technical field of material transfer equipment, in particular to a method for modifying a controllable flow material transfer system.
Background
The belt conveyer is a continuous conveyer with flexible conveyer belt as material bearing and drawing member, and has fixed and movable belt around the driving roller and direction-changing roller, and the upper and lower branches between the two rollers are supported by several rollers.
A large amount of dust pollution can be produced in the traditional steel industry belt conveyor transfer process, and due to irregular scouring of materials on the belt conveyor, the deviation and scattering conditions of the belt conveyor can happen occasionally.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for modifying a controllable flow material transfer system, which solves the problems that a large amount of dust pollution is generated in the transfer process of a belt conveyor in the traditional steel industry, and the belt conveyor deviates and spills materials due to irregular washing of the belt conveyor by the materials.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the method for modifying the controllable flow material transfer system comprises the following specific contents:
(1) the upper shield of the head part of the belt conveyor is reformed: redesigning the upper protective cover at the head of the belt conveyor, wherein the outer dimension of the upper protective cover extends towards a roller at the tail of the belt conveyor, and the function of the upper protective cover is to additionally arrange a dust suppression device in the cover body;
(2) the lower shield of the head part of the belt conveyor is reformed: redesigning and transforming part of the protective cover below the center of a bearing seat of a transmission roller and above a transfer chute, designing a flow collecting cover, wherein the flow collecting cover adopts a streamline arc-shaped head protective cover, is additionally provided with a flow guide plate device, collects materials and changes the material running track, lays a foundation for the uniform and ordered discharge of the materials at a discharge opening, extends towards a roller at the tail part of a belt conveyor in the aspect of size, and is newly researched and developed and designed by a belt conveyor return cleaning device, and adopts a double-section cleaning, wear-resisting and material-sticking-preventing structure;
(3) transforming a bulk material collecting device: a bulk material recovery trough is additionally arranged at the return stroke of the belt conveyor, so that return stroke bulk materials at the transmission roller are collected and recovered to the maximum extent, and the environment of a feeding point is improved;
(4) transformation of a transfer chute: through calculation simulation of the material running track and data analysis of advanced simulation software, drawing of engineering drawings is guided, the material running track is scientifically controlled and the materials are uniformly and orderly dropped and loaded onto the material receiving mechanism;
the simulation software analysis steps are as follows:
1) the method comprises the following steps of adopting a DEM (digital elevation model) control material flow technical design, carrying out detailed analysis on the states of material and air two-phase flow, researching the elasticity, viscosity, plasticity, deformation grade, sliding, expansion and fluidity of material particles, designing by combining the running parameters and spatial arrangement of a belt conveyor, and providing a DEM simulation diagram;
2) analyzing the sliding process of the material flow by adopting a three-dimensional dynamic simulation analysis technology, and carrying out whole-process flow guide on the material flow to change the material flow from continuous falling into a controllable sliding process;
3) the transformation of the kinetic potential energy and the kinetic potential energy direction of the material flow in the transfer process is strictly controlled, so that the material flow slides down in a controllable flow transfer system according to the optimal tangential angle and speed, the blockage phenomenon is eliminated, and the angle of the material impacting a wall plate is required to be less than 20 degrees;
4) ensuring that the outlet horizontal speed of the material flow beam is similar to the speed of the conveying belt, so that the material flow beam can smoothly slide onto the material receiving belt;
5) controlling the motion trail of the material flow to realize the soft landing of the material flow on a lower-stage belt, and centering the material flow on the belt;
(5) transformation of wear resistance of a transfer chute: according to the material scouring position and strength, the chute lining plate is reasonably configured, the main lining plate adopts a replaceable form, the material uses pure wear-resistant ceramic and ceramic composite materials, an anti-blocking detection device is additionally arranged at a proper position of the chute, and once a large material blocks a discharge port, the large material is timely fed back to a central control room through an electric signal;
(6) the receiving mechanism is reformed: the receiving mechanism plays a role in buffering the speed of the materials, adopts a forward expansion design, ensures that the sliding direction of the materials is consistent with the running direction of the belt conveyor, ensures that all blanking points are centered with the receiving belt conveyor below the blanking points, does not generate the phenomenon that the blanking points are not correct during running, adjusts the angle of the discharging spoon according to the discharging direction and the discharging speed of the materials, ensures that the discharged materials uniformly and orderly fall on the central line of the belt conveyor, and simultaneously ensures that the discharging speed of the materials is basically consistent with the belt speed of the belt conveyor;
(7) reforming a guide chute:
1) the novel environment-friendly guide chute is redesigned and installed, the original rubber plate sealing is changed into servo type mechanical sealing, an unpowered dust removal device is additionally arranged in the guide chute, and raised dust can be subjected to multi-channel treatment, then is slowed down and falls back to the belt;
2) the unpowered dust suppression device adopts a pressure balance and closed circulation mode according to aerodynamic and hydromechanical principles to reduce the pressure of air flow in the guide chute, realize multi-stage dust absorption, dust fall and pressure reduction, and realize closed virtuous cycle, settlement and dust accumulation of the dust-containing air flow and fall back to the conveying belt;
3) the unpowered dust suppression device is a comprehensive design considering energy conservation and emission reduction, safe production, clean production, maintenance cost reduction and labor intensity reduction of workers on the premise of dust elimination;
4) the unpowered dust suppression device adopts the concepts of modular design and green design, each component is refined, precisely designed, processed with high precision and produced in batch, interchangeability is realized with the same bandwidth, each component is relatively independent and can be independently designed, manufactured, debugged and stored, and the components are mainly connected through bolts;
5) the unpowered dust suppression device forms a closed hole at the upper part of the belt, and a multi-stage dust suppression box with a dust suppression function is arranged at the outlet of the guide chute and in the guide chute;
6) unpowered dust suppression device body: the design adopts DTII (A) improved modular design, flange connection, pressing forming by adopting Q345 or stainless steel plates, and connection by using section steel bolts for support.
(III) advantageous effects
The invention provides a method for modifying a controllable flow material transfer system. The method has the following beneficial effects:
according to the transformation method of the controllable flow material transfer system, transformation and lifting are performed on various configurations in the material transfer process of two or more current belt conveyors, so that the equipment is more reliable to operate, raised dust is effectively treated, the accident rate is reduced, the service life of the belt is prolonged, the conveying efficiency of the belt conveyors of a steel enterprise is improved to the greatest extent, and the controllable flow material transfer system is an important component part for energy conservation and consumption reduction transformation of the current steel enterprise.
Drawings
FIG. 1 is a flow chart of the system reconstruction of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1, an embodiment of the present invention provides a method for modifying a controllable flow material transfer system, which includes the following specific contents:
(1) the upper shield of the head part of the belt conveyor is reformed: the upper protective cover at the head of the belt conveyor is redesigned, the upper protective cover extends towards the roller at the tail of the belt conveyor in the aspect of appearance size, and the dust suppression device is additionally arranged in the cover body in the aspect of function, so that the improvement can effectively suppress and collect dust at the position of the transmission roller;
(2) the lower shield of the head part of the belt conveyor is reformed: the device is characterized in that a part of shields below the center of a bearing seat of a transmission roller and above a transfer chute is redesigned and transformed, a flow collecting cover is designed, the flow collecting cover adopts a streamline arc-shaped head shield, the materials are ensured to enter according to the optimal angle, the collection and the conveying of the materials are ensured, the induced wind of the material flow is controlled, the impact abrasion of the material flow to the inside of equipment is relieved, a flow guide plate device is additionally arranged, the materials are collected, the material running track is changed, the foundation is laid for the uniform and orderly discharge of the materials at a discharge opening, the materials extend towards the direction of a roller at the tail part of a belt conveyor in terms of size, a belt conveyor return cleaning device is re-developed and designed, a double-section cleaning, wear-resisting and material sticking-preventing structure is adopted, and the return belt sticking phenomenon is more effectively controlled;
(3) transforming a bulk material collecting device: a bulk material recovery trough is additionally arranged at the return stroke of the belt conveyor, so that return stroke bulk materials at the transmission roller are collected and recovered to the maximum extent, and the environment of a feeding point is improved;
(4) transformation of a transfer chute: through calculation simulation of the material running track and data analysis of advanced simulation software, drawing of engineering drawings is guided, the material running track is scientifically controlled and the materials are uniformly and orderly dropped and loaded onto the material receiving mechanism;
the simulation software analysis steps are as follows:
1) the method is characterized in that a DEM (digital elevation model) control material flow technical design is adopted, the states of material and air two-phase flow are analyzed in detail, the elasticity, viscosity, plasticity, deformation grade, sliding, expansion and fluidity of material particles are researched, the design is carried out by combining the operation parameters and the spatial arrangement of a belt conveyor, a DEM simulation diagram is provided, the material flow form and the actual use condition in all simulation screenshots reflect that the material flow form flows along the JL system wall, the flow control system wall and the transfer system wall and are bundled integrally, no material scattering condition occurs, the material flow form and the actual use condition in all simulation screenshots verify that the speed and the direction of the material falling on a belt are consistent with the belt operation direction, and the blanking speed is controlled within the range of plus or minus 10% of the belt speed;
2) the three-dimensional dynamic simulation analysis technology is adopted to analyze the sliding process of the material flow, the whole-process flow guide is carried out on the material flow, the material flow is changed from continuous falling into a controllable sliding process, the collection and the conveying of the material are ensured, the induced air volume carried by the material flow is reduced, and the dust explosion phenomenon at the outlet of a DL system is eliminated;
3) the transformation of the kinetic potential energy and the kinetic potential energy direction of the material flow in the transfer process is strictly controlled, so that the material flow slides down in a controllable flow transfer system according to the optimal tangential angle and speed, the blockage phenomenon is eliminated, and the angle of the material impacting a wall plate is required to be less than 20 degrees;
4) the outlet horizontal speed of the material flow beam is ensured to be close to the speed of the conveying belt, so that the material flow beam can smoothly slide onto the material receiving belt, the impact of the material flow on the belt, a carrier roller and other equipment is reduced, the equipment maintenance workload is reduced, and the service life of the belt is prolonged;
5) the movement track of the material flow is controlled, so that the material flow is softly landed on a lower-stage belt, and the material flow is centered on the belt, thereby preventing the belt from deviating and scattering materials along the way due to non-centered blanking and ensuring the effective output of the belt;
(5) transformation of wear resistance of a transfer chute: the chute lining plates are reasonably configured according to the material scouring position and strength, the main lining plates are replaceable, and the materials are pure wear-resistant ceramics and ceramic composite materials, so that the service life of the chute is greatly prolonged; an anti-blocking detection device is additionally arranged at a proper position of the chute, once a large material blocks the discharge opening, the large material is fed back to a central control room in time through an electric signal, and the anti-blocking detection device is an important component for the transformation of an unattended system of the belt conveyor;
(6) the receiving mechanism is reformed: the receiving mechanism plays a role in buffering the speed of materials, adopts a forward expansion design, ensures that the sliding direction of the materials is consistent with the running direction of the belt conveyor, ensures that all blanking points are aligned with the receiving belt conveyor below the blanking points, does not generate the phenomenon that the blanking points are not correct during running, adjusts the angle of the discharging spoon according to the discharging direction and the discharging speed of the materials, ensures that the discharged materials uniformly and orderly fall on the central line of the belt conveyor, ensures that the discharging speed of the materials is basically consistent with the belt speed of the belt conveyor, reduces the impact and friction of the materials on the rubber belt, effectively controls the deviation and scattering phenomena of the belt conveyor caused by the impact of the materials, and prolongs the service life of the belt;
(7) reforming a guide chute:
1) the novel environment-friendly guide chute is redesigned and installed, the original rubber plate sealing is changed into servo type mechanical sealing, so that the sealing effect is better, the guide chute is more wear-resistant, the unpowered dust removal device is additionally arranged in the guide chute, and raised dust can be slowed down after being subjected to multi-channel treatment and then falls back to the belt, so that the raised dust is effectively inhibited, and the surrounding environment of a blanking point is effectively improved;
2) the unpowered dust suppression device adopts a pressure balance and closed circulation mode according to aerodynamic and hydromechanical principles to reduce the pressure of air flow in the guide chute, realize multistage dust collection, dust fall and pressure reduction, realize closed virtuous cycle and settlement of dust-containing air flow, accumulate dust and fall back to the conveying belt, avoid dust overflow to pollute the working environment, and the unpowered dust suppression device has no land occupation, no power consumption, no secondary pollution and low maintenance cost;
3) the unpowered dust suppression device is a comprehensive design considering energy conservation and emission reduction, safe production, clean production, maintenance cost reduction and labor intensity reduction of workers on the premise of dust elimination;
4) the unpowered dust suppression device adopts the concepts of modular design and green design, each component is refined, precisely designed, processed with high precision and produced in batch, and has interchangeability with the same bandwidth, each component is relatively independent and can be independently designed, manufactured, debugged and stored, and the components are mainly connected by bolts, so that the unpowered dust suppression device is convenient to mount, dismount, transport, replace and the like, the product manufacturing period is shortened, the product quality is improved, and the unpowered dust suppression device is convenient to use, upgrade, maintain, dismount, recycle and process;
5) the unpowered dust suppression device forms a closed hole at the upper part of the belt, and a multi-stage dust suppression box with a dust suppression function is arranged at the outlet of the guide chute and in the guide chute;
6) unpowered dust suppression device body: the design adopts DTII (A) improved modular design, flange connection, pressing forming by adopting Q345 or stainless steel plates, and supporting connection by using section steel bolts, and the structure has good rigidity, attractive and elegant appearance and convenient and rapid installation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The method for modifying the controllable flow material transfer system is characterized in that: the method comprises the following specific contents:
(1) the upper shield of the head part of the belt conveyor is reformed: redesigning the upper protective cover at the head of the belt conveyor, wherein the outer dimension of the upper protective cover extends towards a roller at the tail of the belt conveyor, and the function of the upper protective cover is to additionally arrange a dust suppression device in the cover body;
(2) the lower shield of the head part of the belt conveyor is reformed: redesigning and transforming part of the protective cover below the center of a bearing seat of a transmission roller and above a transfer chute, designing a flow collecting cover, wherein the flow collecting cover adopts a streamline arc-shaped head protective cover, is additionally provided with a flow guide plate device, collects materials and changes the material running track, lays a foundation for the uniform and ordered discharge of the materials at a discharge opening, extends towards a roller at the tail part of a belt conveyor in the aspect of size, and is newly researched and developed and designed by a belt conveyor return cleaning device, and adopts a double-section cleaning, wear-resisting and material-sticking-preventing structure;
(3) transforming a bulk material collecting device: a bulk material recovery trough is additionally arranged at the return stroke of the belt conveyor, so that return stroke bulk materials at the transmission roller are collected and recovered to the maximum extent, and the environment of a feeding point is improved;
(4) transformation of a transfer chute: through calculation simulation of the material running track and data analysis of advanced simulation software, drawing of engineering drawings is guided, the material running track is scientifically controlled and the materials are uniformly and orderly dropped and loaded onto the material receiving mechanism;
the simulation software analysis steps are as follows:
1) the method comprises the following steps of adopting a DEM (digital elevation model) control material flow technical design, carrying out detailed analysis on the states of material and air two-phase flow, researching the elasticity, viscosity, plasticity, deformation grade, sliding, expansion and fluidity of material particles, designing by combining the running parameters and spatial arrangement of a belt conveyor, and providing a DEM simulation diagram;
2) analyzing the sliding process of the material flow by adopting a three-dimensional dynamic simulation analysis technology, and carrying out whole-process flow guide on the material flow to change the material flow from continuous falling into a controllable sliding process;
3) the transformation of the kinetic potential energy and the kinetic potential energy direction of the material flow in the transfer process is strictly controlled, so that the material flow slides down in a controllable flow transfer system according to the optimal tangential angle and speed, the blockage phenomenon is eliminated, and the angle of the material impacting a wall plate is required to be less than 20 degrees;
4) ensuring that the outlet horizontal speed of the material flow beam is similar to the speed of the conveying belt, so that the material flow beam can smoothly slide onto the material receiving belt;
5) controlling the motion trail of the material flow to realize the soft landing of the material flow on a lower-stage belt, and centering the material flow on the belt;
(5) transformation of wear resistance of a transfer chute: according to the material scouring position and strength, the chute lining plate is reasonably configured, the main lining plate adopts a replaceable form, the material uses pure wear-resistant ceramic and ceramic composite materials, an anti-blocking detection device is additionally arranged at a proper position of the chute, and once a large material blocks a discharge port, the large material is timely fed back to a central control room through an electric signal;
(6) the receiving mechanism is reformed: the receiving mechanism plays a role in buffering the speed of the materials, adopts a forward expansion design, ensures that the sliding direction of the materials is consistent with the running direction of the belt conveyor, ensures that all blanking points are centered with the receiving belt conveyor below the blanking points, does not generate the phenomenon that the blanking points are not correct during running, adjusts the angle of the discharging spoon according to the discharging direction and the discharging speed of the materials, ensures that the discharged materials uniformly and orderly fall on the central line of the belt conveyor, and simultaneously ensures that the discharging speed of the materials is basically consistent with the belt speed of the belt conveyor;
(7) reforming a guide chute:
1) the novel environment-friendly guide chute is redesigned and installed, the original rubber plate sealing is changed into servo type mechanical sealing, an unpowered dust removal device is additionally arranged in the guide chute, and raised dust can be subjected to multi-channel treatment, then is slowed down and falls back to the belt;
2) the unpowered dust suppression device adopts a pressure balance and closed circulation mode according to aerodynamic and hydromechanical principles to reduce the pressure of air flow in the guide chute, realize multi-stage dust absorption, dust fall and pressure reduction, and realize closed virtuous cycle, settlement and dust accumulation of the dust-containing air flow and fall back to the conveying belt;
3) the unpowered dust suppression device is a comprehensive design considering energy conservation and emission reduction, safe production, clean production, maintenance cost reduction and labor intensity reduction of workers on the premise of dust elimination;
4) the unpowered dust suppression device adopts the concepts of modular design and green design, each component is refined, precisely designed, processed with high precision and produced in batch, interchangeability is realized with the same bandwidth, each component is relatively independent and can be independently designed, manufactured, debugged and stored, and the components are mainly connected through bolts;
5) the unpowered dust suppression device forms a closed hole at the upper part of the belt, and a multi-stage dust suppression box with a dust suppression function is arranged at the outlet of the guide chute and in the guide chute;
6) unpowered dust suppression device body: the design adopts DTII (A) improved modular design, flange connection, pressing forming by adopting Q345 or stainless steel plates, and connection by using section steel bolts for support.
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