CN218252056U - Scrap steel environmental protection dust arrester installation is cut to oxygen - Google Patents

Abstract

The utility model relates to a scrap steel processing field environmental protection field dust collection field is cut to oxygen especially relates to a scrap steel environmental protection dust arrester installation is cut to oxygen. The utility model provides a scrap steel environmental protection dust arrester installation is cut to oxygen, "the dustproof barricade outside of U" type concrete is provided with barricade anticollision backplate, remove the fixed dustproof baffle device setting of dust cage in dustproof material check barricade structure top, it is provided with the wheel to remove the dust cage bottom, the wheel below is provided with the track, remove dust cage below both sides and set up fixed dustproof baffle outward, the fixed dustproof baffle outside is provided with safety device, set up the chain sleeve between fixed dustproof baffle and the dustproof barricade of "U" type concrete. The device effectively eliminates the safety risk that the lifting door is asynchronous in the lifting process and is easy to incline and slide.

Description

Scrap steel environmental protection dust arrester installation is cut to oxygen

Technical Field

The utility model relates to a scrap steel processing field environmental protection field dust collection field is cut to oxygen especially relates to a scrap steel environmental protection dust arrester installation is cut to oxygen.

Background

The new cutting room for cutting and selecting the scrap steel of the Tai steel processing factory mainly undertakes the cutting digestion of carbon steel, stainless slag Ge eggs and slag steel generated in a slag yard and the scrap steel in the slag yard, the cutting of scrapped slag pots, large tundish scrap steel, rollers, scrapped equipment and the like, and the protection tasks of cleaning sticking pots and the like. A12 ten thousand and 50 ten thousand air volume dust remover matched with the prior environment-friendly dust collection process for cutting scrap steel. This remove dust collecting cover dust collecting system design and dust removal amount of wind etc. are the difficult adjustment of objective factor, and remove the clearance that dust collecting cover promotes the door and remove dust collecting cover body steel construction and exist, and the flue gas that produces in addition the internal cutting flows regularity poor to lead to the cutting smoke and dust to be excessive from here regularly, cause environmental protection pollution, this is exactly the main difficult point of problem.

Therefore, the oxygen-cutting waste steel environment-friendly dust collection process has two defects in an environment-friendly dust collection operation mode, one is that smoke is large in the process of cutting waste steel with large smoke emission such as nickel tundish, roller and residual iron, the production is reduced due to the fact that smoke is large in the waste steel cutting process frequently, and the bottleneck problem of limiting the environment-friendly and environment-friendly operation of oxygen-cutting waste steel processing is always solved; secondly, the mobile dust hood structure of former configuration is unreasonable, and the clearance of lifting gate and mobile dust hood body steel construction causes the cutting smoke and dust to overflow regularly, and the on-the-spot effect of gathering dust is not good, and operational environment is poor, seriously influences oxygen cutting steel scrap operation and dust collecting equipment synchronous operation's environmental protection management and control demand, has very big environmental protection risk.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oxygen is cut steel scrap environmental protection dust arrester installation to above-mentioned problem.

The purpose of the utility model is realized like this: the utility model provides a scrap steel environmental protection dust arrester installation is cut to oxygen, including dustproof material check retaining wall structure and the fixed dustproof baffle device of removal dust cage, dustproof material check retaining wall structure includes "U" type concrete retaining wall and barricade anticollision backplate, "the dustproof barricade outside of U" type concrete is provided with barricade anticollision backplate, the fixed dustproof baffle device of removal dust cage sets up in dustproof material check retaining wall structure top, the fixed dustproof baffle device of removal dust cage is including removing dust cage and fixed dustproof baffle, it is provided with the wheel to remove the dust cage bottom, the wheel below is provided with the track, it sets up fixed dustproof baffle to remove dust cage below both sides outward, the fixed dustproof baffle outside is provided with safety device, set up the chain sleeve between fixed dustproof baffle and the "U" type concrete dustproof barricade. The safety device is an anti-falling steel wire rope. Lay carbon steel board or other similar material steel sheets and carry out the internal reinforcement processing on concrete dustproof barricade surface, transversely install the reinforcing bar anchor additional.

The beneficial effects of the utility model are that: 1. economic benefits are as follows: the cutting amount of the scrap steel is increased to more than 5000 tons/month from 3500 tons/month, the productivity is increased by 42 percent, the environment-friendly processing and supply-keeping tasks of oxygen cutting the scrap steel in the solid slag area of the existing drop hammer and slag yard are replaced, and the economic benefit is obvious.

2. Environmental protection and social benefits: the movable dust hood has obvious dust collection effect after being transformed, the movable dust hood and a newly-added dustproof material grid retaining wall are arranged in the cutting process, the dustproof baffle is matched with the chain sleeve barrel to carry out cutting operation to intercept dustproof smoke, the residual iron with the largest smoke emission is free of smoke overflow, the situation that smoke dust overflows after cutting is basically avoided, all-weather waste steel environment-friendly cutting operation is realized in the cutting process, the requirements of field operation are met, legal compliance and environment-friendly production is realized, smoke dust emission is strictly and effectively controlled, the dust emission concentration of a dust removal facility after treatment is not more than 30mg/Nm3, the problems of unorganized emission and environment-friendly substandard are solved, and the social environment-friendly benefit is obvious.

3. Functional benefits are as follows: the functional precision of the movable dust hood is thoroughly improved, the dust collecting effect is obviously improved, the collection amount of the dust is increased from 15 tons/month to 25 tons/month, and the synchronous and stable operation of the scrap steel cutting operation and the environment-friendly facility of the movable hood is ensured.

4. Safety benefits are as follows: effectively eliminated the asynchronous safe risk that easily causes the slope landing of lift gate lift process, improved worker's operation environment, ensured worker's occupational health.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a plan view of a continuous U-shaped concrete dust-proof retaining wall.

Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A. Description of the invention: (1) The foundation adopts C30 concrete, and the bed course adopts C15 concrete, and the reinforcing bar adopts HRB400 reinforcing bar, and the ligature interval 200mm. (2) The steel plates on two sides of the wall are fully welded by adopting steel plates with the thickness of 12mm, and the steel plates with the thickness of 20-40mm are paved on the ground.

FIG. 3 is a schematic view showing the positions of the U-shaped concrete dust-proof retaining wall and the movable dust-collecting cover.

FIG. 4 is a chain bushing position illustration.

FIG. 5 is a flow chart of a novel oxygen-cutting waste steel environment-friendly dust collection process.

The U-shaped concrete dustproof retaining wall comprises a U-shaped concrete dustproof retaining wall 1, a movable dust collection cover 2, a retaining wall anti-collision protecting plate 3, a safety device 4, a chain sleeve 5, a wheel 6, a rail 7 and a fixed dustproof baffle 8.

Detailed Description

The invention aims to provide a system structure of a fixed dustproof baffle of a movable dust hood, a matched dustproof material grid baffle wall structure and an implementation method on the premise of meeting the field use function of the existing movable dust hood, and the method can effectively avoid the serious problem of excessive cutting smoke dust in the oxygen cutting waste steel dust collection process in the material grid of the movable dust hood, reduce the risk of occupational disease hazard, improve the requirement of environmental control and control, and solve the problem of environmental protection and dust removal in waste steel processing from the source; meanwhile, a good production operation environment is provided for workers, and smooth production is guaranteed.

The technical scheme is as follows:

1. design of dust-proof material grid retaining wall. By utilizing the hydrodynamics wind tunnel effect, the design height of the material grid retaining wall is fully combined with the heights of the waste steel material type, the travelling speed reducer (the travelling speed reducer is matched with wheels) of the movable dust hood body structure and other parts to carry out scientific calculation, (the lower plane of the movable dust hood travelling wheel bearing seat is taken as a reference plane, and the height is raised by 300mm on the basis), and the concrete dust-proof material grid retaining wall is built in the movable dust hood. The dustproof material check retaining wall structure comprises a U-shaped concrete dustproof retaining wall and a retaining wall anti-collision protective plate. In order to meet the requirements of a plurality of continuous cutting areas, the dustproof material check wall structure can be designed into a single type or continuous type dustproof material check wall structure.

2. A system structure of a movable dust collection cover fixed dust baffle is designed. Fixed dustproof baffles are arranged on two sides of the moving dust collection cover in the advancing direction. The fixed dustproof baffle structure comprises a movable dust collection cover dustproof fixed baffle, and a chain sleeve and a safety device are arranged between the fixed baffle and the concrete retaining wall.

Wherein the chain sleeve is installed in dustproof fixed stop lower part (fixed through hinged joint), bilayer, dislocation installation, and dustproof fixed stop is higher than U type concrete retaining wall (intermediate wall), interval 200mm, chain sleeve length 300mm. The implementation steps are as follows: after the scrap steel to be cut is placed in place in the material grid, the movable dust collection cover is operated to travel to enable the movable dust collection cover to basically align the dustproof fixed baffle of the movable dust collection cover to the U-shaped concrete retaining wall (intermediate partition wall), and the chain sleeve is kept to naturally fall and cling to the outer side of the U-shaped concrete retaining wall (intermediate partition wall).

The dustproof fixed baffle plate is used for blocking the flow direction of the flue gas; the chain sleeve has the functions of intercepting flue gas and preventing the flue gas from overflowing, the safety device is designed by utilizing a fixed dustproof baffle outside a steel wire rope fixed and movable dust collection cover for lifting an electric hoist, namely the steel wire rope and the cat claws are used for reinforcing the fixed dustproof baffle, and the safety device has the function of avoiding serious potential safety hazards caused by heating, deformation and falling off of the dustproof baffle in the production process. The structure of the movable dust hood fixed dust baffle system is shown in the figure-3.

3. Cutting operation selection of optimal cutting smoke collection area. Under fixed dustproof baffle system and the cooperation of concrete dustproof barricade, the cutting operation is carried out in the selection best cutting smoke and dust collecting region when implementing, according to the cutting operation angle, reaches control cutting process flue gas flow direction, realizes that on-the-spot smoke and dust is from dust removal dust collection mouthful high-efficient entrapment, discharge to reach standard, stops the smoke and dust excessive from the source.

4. And designing a protective structure of the concrete dustproof retaining wall. In order to prevent high-temperature flame generated by cutting scrap steel from damaging the concrete dustproof retaining wall and consider that the processes of digging a pit by a digging machine and loading and unloading the scrap steel by a steel grabbing machine can cause collision damage to the material grid retaining wall, the channel outer side retaining wall with reinforced thickness is designed. Lay Q235 carbon steel board or other similar material steel sheets more than 12mm and carry out inside reinforcement processing on concrete dustproof barricade surface, transversely install the reinforcing bar additional and anchor. The protective structure of the concrete dustproof retaining wall is shown in the figure-2.

The method is already applied to the cutting field implementation of the scrap steel cutting operation area of the Tai steel processing factory in 11 months of 2020. Practice shows that the method thoroughly improves the functional precision of the movable dust hood, the dust collection effect is obviously improved, the collection amount of the dust is improved from 15 tons/month to 25 tons/month, and simultaneously the synchronous and stable operation of the scrap steel cutting operation and the environment-friendly facility of the movable hood is ensured.

Examples

1. And (3) implementing the single U-shaped dustproof material grid retaining wall. The design height of the material grid retaining wall fully combines the heights of the waste steel material type, the traveling speed reducer of the movable cover body structure and other positions to carry out scientific calculation, and the concrete dustproof material grid retaining wall is built inside the movable dust collection cover. The dustproof material check retaining wall structure comprises a U-shaped concrete dustproof retaining wall and a retaining wall anti-collision protective plate. In order to meet the requirements of a plurality of continuous cutting areas, the dustproof material grid retaining wall structure can be designed into a continuous dustproof material grid retaining wall structure.

2. And implementing a system structure for fixing the dustproof baffle plate by moving the dust collection cover. A fixed dustproof baffle is arranged below the movable dust collection cover. The dustproof fixed baffle and the chain sleeve can effectively block the smoke from flowing to the smoke to intercept, so that the smoke is prevented from overflowing; the safety device can effectively avoid the dustproof baffle from generating serious potential safety hazards caused by heating, deformation and falling off in the production process.

3. And selecting the optimal cutting smoke dust collecting area for the cutting operation. Under fixed dustproof baffle system and the cooperation of concrete dustproof barricade, the material that will cut when the cutting operation was implemented is placed in regional rear portion, according to the cutting operation angle, realizes that on-the-spot smoke and dust from the high-efficient entrapment of dust removal and collection mouth, discharge to reach standard, stops the smoke and dust excessive from the source.

4. The application of the protective structure of the concrete dustproof retaining wall. And (3) laying a 16mm Q235 carbon steel plate on the surface of the concrete dustproof retaining wall, carrying out internal reinforcement treatment, and transversely additionally arranging a steel bar for anchoring. Effectively avoids high-temperature flame generated by cutting the scrap steel, and damages to the concrete dustproof retaining wall in the processes of digging a pit and loading and unloading the scrap steel by a steel grab.

The above description is only for the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims (3)

1. The utility model provides an oxygen is cut steel scrap environmental protection dust arrester installation which characterized in that: including dust prevention material check retaining wall structure and the fixed dustproof baffle device of removal dust cage, dust prevention material check retaining wall structure includes "U" type concrete retaining wall and barricade anticollision backplate, "the dustproof barricade outside of U" type concrete is provided with barricade anticollision backplate, it sets up in dust prevention material check retaining wall structure top to remove the fixed dustproof baffle device of dust cage, it includes removal dust cage and fixed dustproof baffle to remove the fixed dustproof baffle device of dust cage, it is provided with the wheel to remove the dust cage bottom, the wheel below is provided with the track, it sets up fixed dustproof baffle outside the both sides of removal dust cage below, the fixed dustproof baffle outside is provided with safety device, set up the chain sleeve between fixed dustproof baffle and the "U" type concrete dustproof barricade.

2. The oxygen-cutting waste steel environment-friendly dust collecting device according to claim 1, characterized in that: the safety device is an anti-falling steel wire rope.

3. The oxygen-cutting waste steel environment-friendly dust collecting device according to claim 1, characterized in that: and laying a carbon steel plate on the surface of the concrete dustproof retaining wall, performing internal reinforcement treatment, and transversely additionally installing reinforcing steel bar anchors.

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