CN106582999A - Environment-friendly recycled aggregate strengthening and pulverizing integrated system - Google Patents

Abstract

The invention discloses an integrated system for strengthening and pulverizing using the environment-friendly recycled aggregate, including a particle shaping and strengthening equipment system, a pulverizing system and an adjustment system. The particle shaping and strengthening equipment system includes particle shaping and strengthening equipment, a motor, a fan, Belt conveyor, wind lock buckle bag, air lock counterweight valve, supporting air pipe and supporting support, pulverizing system includes modified Raymond mill, cyclone, supporting air pipe, supporting support, dust collection and air pressure adjustment system , The adjustment system includes a pressure filter bag filter, a partial pressure valve, and supporting brackets. The invention effectively integrates the waste concrete recycled aggregate crushing, shaping and strengthening, pulverizing and dust collection methods into one, can prepare recycled aggregate and recycled fine powder for recycled concrete, and effectively reduce dust emission.

Description

An environment-friendly recycled aggregate strengthening and pulverizing integrated system

technical field

The invention belongs to the technical field of green building materials and its production and application, and specifically relates to the resource utilization of construction waste, the preparation of recycled aggregate and recycled micropowder for recycled concrete, and an environmentally friendly recycled aggregate reinforcement and pulverization that can effectively reduce dust emissions. integrated system.

Background technique

Although concrete materials have a long service life, concrete structures and buildings will eventually have to be demolished due to various factors after a period of use, resulting in a large amount of waste concrete. On the other hand, with the development of social economy and the increase of the amount of concrete, the resource depletion and environmental damage caused by the mining of sand and gravel aggregates have become the focus of engineering and technical personnel. The sustainable development of concrete is in contradiction with the supply and demand of aggregates. increasingly prominent. Therefore, if the waste concrete can be recovered on site, recycled after crushing, grading, and pulverized, and used as coarse and fine aggregates, mineral powder admixtures, etc. to prepare recycled concrete for new civil engineering, it will not only be effective Reduce costs, save natural aggregate resources, alleviate the contradiction between aggregate supply and demand, and greatly reduce urban environmental pollution.

At present, the crushing, grading, and pulverization of waste concrete are basically handled separately. For example, simple crushing of waste concrete blocks with a jaw crusher; simple screening and processing of coarse and fine recycled aggregates with a particle shaper Remove impurities; use ball mill, vibrating mill, Raymond mill and other grinding equipment to produce recycled micropowder. This separate treatment process not only has multiple losses of equipment energy, but the quality of the coarse and fine recycled aggregates and recycled micropowder produced is not high enough, and the gradation is not reasonable enough. In addition, dust is often generated during the production process, which pollutes the urban environment again (even if Some grinding equipment comes with corresponding dust collection equipment).

Contents of the invention

In order to overcome the above defects, the present invention provides an environment-friendly recycled aggregate strengthening and pulverizing integrated system, which effectively integrates waste concrete recycled aggregate crushing, shaping and strengthening, pulverizing and dust collection methods.

An integrated system for strengthening and pulverizing using the environment-friendly recycled aggregate includes:

An integrated system for strengthening and pulverizing using the environment-friendly recycled aggregate, including a particle shaping and strengthening equipment system, a pulverizing system and an adjustment system, characterized in that the particle shaping and strengthening equipment system includes particle shaping and strengthening equipment, a motor, a fan, Belt conveyor, wind lock buckle bag, air lock counterweight valve, supporting air duct and supporting support, pulverizing system includes modified Raymond mill, cyclone, supporting air duct, supporting support, dust collection and air pressure adjustment system , The adjustment system includes a pressure filter bag filter, a partial pressure valve, and supporting brackets.

A method of using the environment-friendly recycled aggregate strengthening and pulverizing integrated system is as follows:

(1) Under the condition that the motor drives the spreading disc and the fan blows air, the waste concrete blocks enter the particle shaping and strengthening equipment with the feeding port of the air lock bag through the belt conveyor, and the blocks are collided with each other and crushed , Grinding and stripping and other crushing methods, by controlling the air volume and wind speed per unit time, the crushing, particle shaping and strengthening of recycled aggregates are effectively realized; after the bottom air-locking counterweight valve reaches the preset value, directly or with a scraper with a turntable The slat conveyor unloads the recycled aggregate.

(2) At the same time, the dust-laden airflow containing fine particles continues to be transported to the modified Raymond mill through the air duct, and the regenerated bone is effectively removed by grinding and rolling between the grinding roller and the grinding ring of the Raymond mill. The material is crushed; under the action of the airflow, the regenerated fine powder passes through the analyzer, and is separated and settled under the action of the vortex of the cyclone. After the air lock counterweight valve reaches the preset value, the regenerated fine powder is discharged directly or by a screw unloader.

(3) The finer dust airflow is connected to the air inlet of the particle shaping and strengthening equipment through the supporting air duct, effectively realizing the recycling of the airflow and closed-circuit dust collection; at the same time, the air outlet of the particle shaping and strengthening equipment is connected to the The air inlet of the filter bag type dust collector is added with a regulating valve to effectively adjust the air pressure and air volume of the separate outlet, so as to realize the air pressure adjustment and dust collection environmental protection effect.

The particle shaping and strengthening equipment system is mainly particle shaping and strengthening equipment based on the working principle of the centrifugal powder separator, and a motor, a fan and a sealed air duct well-known to those skilled in the art are added at the air inlet of the particle shaping and strengthening equipment; The outlet of the plastic strengthening equipment is equipped with an air lock counterweight valve and a scraper conveyor with a turntable, which are well known to those skilled in the art, to achieve air lock and continuous discharge.

The pulverizing system is mainly a Raymond mill and a cyclone known to those skilled in the art. The air inlet of the Raymond mill is directly connected to the air outlet of the dusty air outlet containing fine particles on the upper side of the particle shaping and strengthening equipment, wherein The connection at the air inlet of the Raymond Mill can be connected by a butt joint, spiral or volute method well known to those skilled in the art. The air outlet of the Raymond mill is connected with the air inlet of the cyclone by a method well known to those skilled in the art, and the connection at the air inlet of the cyclone can be connected by a butt joint, spiral or volute method well known to those skilled in the art At the same time, one or a combination of air lock counterweight valves or screw unloaders well known to those skilled in the art is added at the discharge port of the cyclone.

The dust collection and wind pressure regulation system is mainly a pressure filter bag dust collector and a partial pressure valve well known to those skilled in the art, and returns the dust-laden airflow from the air outlet of the cyclone to the The air inlet of the particle shaping and strengthening equipment realizes the recycling of the dusty airflow; at the same time, the air inlet of the filter bag dust collector is connected to the air outlet of the particle shaping and strengthening equipment with a matching air duct, and by adding a branch well known to those skilled in the art, The pressure valve is used to control the air volume to maintain a reasonable air pressure throughout the closed-circuit process.

It should be pointed out that the number of Raymond mills, cyclones and baghouses can be increased according to the overall material handling capacity and internal wind pressure by means of parallel or series connection well known to those skilled in the art.

The recycled aggregate strengthening and pulverizing integrated system of the present invention can realize large-scale production in factories, and has broad application prospects in the technical field of solid resource utilization, and the corresponding process has the following advantages:

(1) By adopting this inventive process, the degree of mechanical automation can be improved and the energy consumption of the system can be reduced;

(2) By adopting this inventive process, by controlling the air volume and wind speed per unit time, high-quality recycled aggregate and recycled fine powder with reasonable gradation after particle shaping and strengthening can be obtained at one time;

(3) Using the inventive process, on the one hand, by connecting the airflow back to the particle shaping and strengthening equipment, it is a beneficial supplement to possible air leakage, effectively realizing the closed-circuit process and the internal circulation of the dust-laden airflow, which greatly reduces the spillover and diffusion of dust. On the one hand, separate outlets are used to simultaneously connect the air outlet of the particle shaping and strengthening equipment to the air inlet of the bag filter, and a regulating valve is added to the separate outlet to effectively adjust the air pressure and air volume of the separate outlet to achieve air pressure regulation.

(4) Using the inventive process, large-scale assembly line production can be formed to efficiently recycle urban waste construction waste, and the reshaped and strengthened high-quality coarse and fine aggregates produced by the above-mentioned assembly line, the regenerated micropowder with different particle sizes screened out Recycled concrete with good performance can be directly prepared and applied to road engineering, municipal engineering and housing construction, which has significant social, economic and environmental comprehensive benefits.

Description of drawings

Fig. 1 Schematic diagram of integration of environment-friendly recycled aggregate reinforcement and pulverization system;

Figure 2 is a schematic diagram of the system integration of the filter bag dust collector;

The marks shown in the figure are: 1. Fan; 2. Motor; 3. Modified particle shaping and strengthening equipment; 4. Belt conveyor; 5. Air lock bag; 6. Air lock counterweight valve and scraper conveyor; 7. Filter bag dust collector; 8. Partial pressure valve; 9. Modified Raymond mill; 10. Supporting air duct; 11. Cyclone cylinder; 12. Air lock counterweight valve and screw conveyor.

detailed description

Example 1

As shown in Figure 1, the environment-friendly recycled aggregate strengthening and pulverizing system of the present invention includes fan 1, motor 2, modified particle shaping and strengthening equipment 3, belt conveyor 4, air lock bag 5, air lock counterweight Valve and scraper conveyor 6, filter bag dust collector 7, partial pressure valve 8, modified Raymond mill 9, supporting air duct 10, cyclone cylinder 11, air lock counterweight valve and screw conveyor 12. After integration, a complete set of process steps covering waste concrete crushing, screening, pulverizing and dust collection is obtained, as follows:

1) Under the condition that the motor 2 drives the spreader and the fan 1 blows air, the waste concrete blocks enter the particle shaping and strengthening equipment 3 with the feeding port of the air lock bag 5 through the belt conveyor 4, and the blocks are centrifuged By controlling the air volume and wind speed per unit time, the crushing, particle shaping and strengthening of recycled aggregates are effectively realized; after the bottom air-locking counterweight valve 6 reaches the preset value, Unload the recycled aggregate directly or with a scraper conveyor 6 with a turntable.

2) At the same time, the dust-laden airflow containing fine particles continues to be transported to the refitted Raymond Mill 9 through the supporting air duct 10, and the regenerated material is effectively recovered through the grinding and rolling between the grinding roller and the grinding ring of the Raymond Mill. The fine aggregate is crushed, and the regenerated fine powder that meets the fineness requirements passes through the top analyzer of the Raymond Mill under the action of the airflow, enters the cyclone 11, and is quickly separated and settled under the action of the eddy current; the air-locking counterweight valve 12 at the bottom of the cyclone When the preset counterweight is reached, it will be opened, and the regenerated fine powder meeting the expected specifications will be discharged through the screw unloader 12;

3) The airflow containing finer dust is connected to the air inlet of the particle shaping and strengthening equipment 3 through the supporting air duct 10, effectively realizing the recycling of the airflow and closed-circuit dust collection; at the same time, the air outlet of the particle shaping and strengthening equipment 3 is simultaneously Connect to the air inlet of the filter bag dust collector 7, and add a regulating valve 8 to effectively adjust the air pressure and air volume of the separate outlet, and realize the closed-circuit air circulation utilization, air pressure adjustment and dust collection environmental protection effect as much as possible.

Example 2

The difference from Example 1 is that the cyclone 11 is two cyclones 11 of the same specification connected in parallel, and the supporting air ducts 10 of the two cyclones 11 are respectively connected to the modified particle shaping and strengthening equipment 3 and the filter bag dust collector 7 . All the other are the same as in Example 1.

Example 3

The difference from Example 1 is that the feed inlet of the modified Raymond mill 9 is completely sealed, and the air inlet of the bag filter 7 is only connected to the air outlet of the fan 1 and the cyclone 11 by the matching air duct 10, forming a whole series series system. The details are shown in Figure 2. All the other are the same as in Example 1.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. it is a kind of to be included with powder integrated system processed using environment-friendly type regeneration aggregate reinforcing：

One kind is strengthened and powder integrated system processed using the environment-friendly type regeneration aggregate, including particle shaping strengthening device system, system Powder system and regulating system, it is characterised in that particle shaping strengthening device system includes particle shaping strengthening device, motor, wind Machine, ribbon conveyer, lock wind button bag, lock wind counterweight valve, supporting airduct and matched bracket, pulverized coal preparation system includes that the thunder of repacking is covered Mill, cyclone cylinder, supporting airduct, matched bracket, gather dust and Wind-pressure adjusting system, and regulating system is gathered dust including pressure type filter bag type Device, partial pressure valve, matched bracket.

2. according to claim 1 environment-friendly type regeneration aggregate strengthens the using method with powder integrated system processed, it is characterised in that Including following process：

(1) under conditions of motor drives spreading disk and drives blower fan air blast, waste concrete block is entered by ribbon conveyer In entering the particle shaping strengthening device of locking wind button bag spout, thing block is through mutually colliding, smashing, grinding the crushing sides such as stripping Formula, the broken of regeneration aggregate, particle shaping and reinforcing are effectively realized by controlling the air quantity of unit interval with wind speed；Deng bottom Lock wind counterweight valve is reached after preset value, directly or draws off regeneration aggregate with the scraper conveyor with rotating disk.

(2) at the same time, in continuing transported to the Raymond mill of repacking by airduct containing fine grain dust-contained airflow, by Raymond mill Grinding roller and bull ring between mill the effect such as shell, roll and effectively crush regeneration aggregate；Regenerative micro powder is passed through and divided under airflow function Analysis machine, and separation sedimentation in the presence of being vortexed by cyclone cylinder, by locking wind counterweight valve up to after preset value, directly or with spirally Unloader draws off regenerative micro powder.

(3) particle shaping strengthening device air inlet is connected to by supporting airduct containing finer dust air-flow, effectively realizes gas Stream recycling and closed circuit gathers dust；At the same time, particle shaping strengthening device air outlet is connected simultaneously using discrete outlet Filter bag type dust-precipitator air inlet is connected to, and sets up control valve, effectively to be adjusted the blast and air quantity of discrete mouth, realize wind Pressure is adjusted and the environment protecting that gathers dust.

3. the environment-friendly type regeneration aggregate according to claim 1 and 2 is strengthened and powder integrated system processed, it is characterised in that described Particle shaping strengthening device system is mainly according to the particle shaping strengthening device of centrifugal classifier operation principle, whole in granule Shape strengthening device air inlet sets up motor well-known to those skilled in the art, blower fan and sealing air pipe；Simultaneously in granule Shaping strengthening device discharging opening sets up lock wind counterweight valve well-known to those skilled in the art and the scraper-type with rotating disk is defeated Machine is sent, lock wind and continuous discharge is realized.

4. the environment-friendly type regeneration aggregate according to claim 1 and 2 is strengthened and powder integrated system processed, it is characterised in that described Pulverized coal preparation system is mainly Raymond mill well-known to those skilled in the art and cyclone cylinder, and the air inlet of Raymond mill is strong with particle shaping Containing the direct airduct connection of fine grain dust-contained airflow air outlet, wherein Raymond mill air inlet connected mode can for change equipment upside To be connected with dock well-known to those skilled in the art, spiral or scroll casing type method.The air outlet ability of Raymond mill Method known to field technique personnel couples with the air inlet of cyclone cylinder, and wherein cyclone cylinder air inlet connected mode can be with this Dock, spiral or scroll casing type method known to art personnel is connected, while setting up ability in cyclone cylinder discharging opening One kind in lock wind counterweight valve or screw discharging machine or combination known to field technique personnel.

5. the environment-friendly type regeneration aggregate according to claim 1 and 2 is strengthened and powder integrated system processed, it is characterised in that described Gather dust and Wind-pressure adjusting system is mainly pressure type filter bag type dust-precipitator well-known to those skilled in the art and partial pressure valve, will be from The supporting airduct tieback of the air outlet of cyclone cylinder dust-contained airflow out realizes ash-laden gas to particle shaping strengthening device air inlet That what is flowed recycles；Meanwhile, the air inlet of filter bag type dust-precipitator is connected to particle shaping strengthening device air outlet with supporting airduct, And air quantity is controlled by setting up partial pressure valve well-known to those skilled in the art, to maintain the reasonable wind of whole closed circuit flow process Pressure.

6. the environment-friendly type regeneration aggregate according to claim 1 and 2 is strengthened and powder integrated system processed, it is characterised in that described The quantity of Raymond mill, cyclone cylinder and bag filter can use people in the art according to overall material handling capacity and internal blast Method in parallel or series known to member is set up.