CN108787691A - A kind of closed construction refuse regenerated processing system - Google Patents

Abstract

The invention discloses a closed construction waste regeneration treatment system, which comprises a feeding unit, a crushing unit, a screening unit, a conveying unit and a dust collecting unit. connected in sequence and arranged in the first pit below the ground; the dust unit is arranged in the second pit below the ground and connected to the first pit; the first pit and the second pit are adjacent to each other, and the surrounding It is sealed and the top surface is covered with a cover plate to form an underground enclosed space. The main equipment is moved underground, which reduces the occupied area and eliminates the high-altitude buildings and operations on the ground; on the one hand, it can realize the horizontal or downward transportation of the initial materials, shorten the material transportation distance, and realize the step-type automatic blanking, which not only improves On the other hand, the whole system layout is more compact, which is not only beneficial to dust collection, but also can eliminate low-frequency vibration, reduce noise pollution, and realize the centralized and effective control of dust and noise pollution sources.

Description

A Closed Construction Waste Recycling System

technical field

The invention belongs to the technical field of construction waste recycling and reuse, and in particular relates to a closed construction waste regeneration treatment system.

Background technique

Construction waste mainly refers to reinforced concrete blocks, bricks and tiles and other materials produced during the process of urban construction and house demolition. With the acceleration of urban construction in our country, more and more construction wastes are produced. The vast majority of construction waste is transported to the suburbs or mountainous areas without any treatment, and is placed in the open air or landfilled. Some of these construction wastes occupy the land, resulting in a waste of resources; the dust generated during the transportation and stacking of construction wastes pollutes the air, and heavy metals pollute groundwater, causing environmental pollution; at the same time, construction wastes will destroy the soil structure after landfill, causing surface subsidence .

At present, our country already has a certain technology to effectively use construction waste as a renewable resource after treatment. In the existing technology, the construction waste is manually sorted, and the plastic, wood, and iron materials are sorted out for recycling; the remaining concrete and bricks and tiles are crushed, screened, and cleaned to make building aggregates, which can be used to make concrete or Unburned bricks, etc. However, the noise and dust pollution of the existing production line has always been a hot issue in the development of this technology. It is difficult to isolate the dust, noise and vibration. However, the existing solutions have limited effects on improving noise and dust pollution. The device proposes local improvement measures, but does not take into account the overall plan of the production line; in addition, the construction waste recycling line occupies a large area, the cost of land use is high, there are many buildings on the ground, and the signs of industrial pollution are obvious, which is different from urban and rural areas. The surrounding environment of the construction plan is uncoordinated, the site selection range is small, it is difficult to realize the nearby material supply, and it also increases energy consumption and cost, which is not conducive to energy saving and emission reduction and reducing energy consumption of the enterprise; thus resulting in the limited shape and volume of each device, which greatly This restricts the capacity and regionality of the construction waste recycling line.

Contents of the invention

In view of this, the purpose of the present invention is to break the traditional technical prejudice and provide a closed construction waste regeneration treatment system to solve the problems of floor area, efficiency and environmental protection by improving the layout structure, location, process and form.

In order to achieve the above object, the present invention provides the following technical solutions: a closed construction waste regeneration treatment system, including a feeding unit, a crushing unit, a screening unit, a conveying unit, a dust collection unit, the feeding unit, the crushing unit, The screening unit and the conveying unit are connected in sequence according to the production process, and are arranged in the first pit below the ground; the dust collection unit is arranged in the second pit below the ground, and is connected with the first pit; the second A ground pit is arranged adjacent to the second ground pit, and the surroundings are sealed respectively, and the top surface is covered with a cover plate to form an underground enclosed space.

Further, the feeding unit includes a feeding chute and a vibrating feeder, and the feeding chute is supported by a support frame in the first pit, and is inclined, and the angle between it and the horizontal plane is 30°-70° , the outlet at the lower end is connected with the vibrating feeder; the vibrating feeder is located above the crushing unit and blanks the crushing unit.

Further, the upper end of the feeding chute is provided with a first dust removal pipe connected with the dust collection unit, and a plurality of spray heads are arranged in the first dust removal pipe; There is a flap sealing door at the mouth; the dust collection unit adopts a bag type dust collector.

Further, the crushing unit includes a crushing device, a conveyor, and an iron remover, and the crushing device crushes the falling material of the vibrating feeder, using a jaw crusher or an impact crusher; the conveyor crushes the material The discharge of the crushing device is transported to the screening unit by using a scraper conveyor or a belt conveyor; the iron remover is arranged above the conveyor to remove iron from the crushed material on the conveyor.

Further, the screening unit includes a multi-layer duct that is installed obliquely and vibrates, screens and conveys materials. The high end of the multi-layer duct is provided with a material inlet connected to the conveyor, and the lower end is provided with a A plurality of outlets with the same number of layers are connected to the plurality of conveyors of the conveying unit in one-to-one correspondence, and the multi-layer channel is provided with at least one cross-sectional mutation for disturbing the flow state of the material in the direction of its length extension structure.

Further, the abrupt cross-section structure is a stepped structure, and the step surface between two adjacent step structures is horizontal or inclined; the bend between the stepped structure and the step surface is rounded, chamfered or provided with a transition sloped surface.

Further, the multi-layer duct is connected to the feeding chute at the outlet of the one-layer duct near the material inlet; The second dust removal pipe.

Further, the conveyor is composed of one or more of scraper conveyor, belt conveyor, screw feeder or bucket elevator.

Further, the multi-layer channel is connected with a hot air device on the layer of channel away from the material inlet, and the hot air device is a hot air fan.

Further, the treatment system further includes a control unit arranged on the ground and connected to the feeding unit, the crushing unit, the screening unit, the conveying unit and the dust collecting unit respectively.

The beneficial effects of the present invention are:

1. In the present invention, the main equipment is moved underground, so that the main equipment can help the pit to form a solid closed space, which is not only beneficial to dust collection, but also can eliminate low-frequency vibration, reduce noise pollution, and realize the concentration of pollution sources such as dust and noise and effective control.

2. The present invention has the characteristics of high overall technical content, strong regional adaptability, high efficiency and environmental protection, and large capacity, which greatly improves the work efficiency of the fly ash production line, and its production capacity can be increased by 20%-30%; at the same time, it can be used according to the terrain Adaptive adjustments to the conveying position, direction, length, height, etc. of the conveyor are conducive to enhancing the applicability of the system.

In general, the sinking of the main equipment is lower than the material storage yard, which realizes no need to lift the material, shortens the material transmission distance, compacts the structure, reduces the material transportation cost, and improves the transportation speed; and the underground space, the occupied area is greatly reduced, Save land use cost, improve land use efficiency; greatly reduce the number and height of ground building facilities, reduce the adverse impact on the environment, avoid conflicts with urban and rural construction planning, expand the scope of optional sites for station construction, and shorten the The distance from the material construction site is realized to realize the nearby construction of the station and ensure the timely supply of materials to the surrounding construction sites. The sealed pit completely seals off the main equipment and material transmission, and completely solves environmental problems such as dust, noise, and vibration.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objects and other advantages of the invention may be realized and attained by the following specification.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the production system process layout schematic diagram of the present invention;

Reference signs: 1-first pit, 2-second pit, 3-feeding chute, 4-vibrating feeder, 5-first dust removal pipe, 6-flap sealing door, 7-crushing device , 8-conveyor, 9-iron remover, 10-channel, 11-inlet, 12-second dust removal pipe, 13-conveyor, 14-bag filter, 15-hot air device.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Fig. 1, a kind of closed type construction waste regeneration processing system in the present embodiment comprises feeding unit, crushing unit, screening unit, conveying unit, dust collection unit, and described feeding unit, crushing unit, sieve The sub-units and conveying units are connected in sequence according to the production process, and are arranged in the first pit 1 below the ground; the dust collection unit is arranged in the second pit 2 below the ground, and is connected to the first pit 1 ; The first pit 1 and the second pit 2 are arranged adjacent to each other, and the surroundings are sealed respectively, and the top surface is covered with a cover plate to form an underground closed space.

During production, the material enters the feeding unit and then is input to the crushing unit for crushing, and the crushed material enters the screening unit for sorting, and the materials of different particle sizes sorted out by the screening unit pass through the conveying unit It is transported out of the first pit 1, and can be stored separately or transported out to be picked up according to demand. By completing the step-down feeding and crushing underground, the external noise pollution is reduced. In addition, since all parts are operated underground, the dust generated during the operation can be closed and recycled, further reducing the external dust pollution. At the same time, the dust collection unit is arranged separately from other main production equipment, which is beneficial to the operation of the dust collection unit and enhances its service life.

The feeding unit in the present embodiment comprises a feeding chute 3 and a vibrating feeder 4. The feeding chute 3 is supported in the first pit 1 by a support frame (unmarked), and is inclined to be arranged, and the distance between the horizontal plane and the The included angle is 30°～70°, the outlet at the lower end is connected with the vibrating feeder 4, and the upper end of the feeding slope 3 is provided with a first dust removal pipe 5 connected with the dust collection unit; The falling point depends on the position, height and inclination angle of the material. In this embodiment, the inclination angle of the feeding chute 3 is relatively large, which is 30° to 70°. Under the action of inertia, the construction waste material is thrown to the center of the vibrating feeder 4 in a parabola, which greatly improves the problem of lateral stacking when feeding the side wall. On the other hand, when the construction waste material is moving in the feeding chute or the dust in the vibrating feeder 4 can be sucked away by the dust collection unit through the first dust removal pipe 5 and processed in a unified way, it greatly solves the problem of material falling. Dust problem in the process. Preferably, a plurality of shower heads (not shown) are arranged in the first dust removal pipe 5; like this, the sprinkler effect of the shower heads can further solve the problem of dust or vibration caused by construction waste materials moving in the feeding chute. Dust problem in feeder 4.

In this embodiment, a flap sealing door 6 is provided at the feeding port at the upper end of the feeding chute 3; the flap sealing door 6 seals the vibrating feeder 4 into an independent compartment, realizing fully enclosed feeding of the system. , to ensure that the dust during the dumping process will not escape.

The dust collecting unit in this embodiment adopts a bag type dust collector 14 . It is connected with the first pit 1 and the first dust removal pipe 5 in the first pit 1 through a pipeline (not shown). In this way, the dust generated during the feeding process of construction waste materials and the dust generated by the crushing unit during the crushing process can be collected, thereby reducing the dust concentration in the first pit 1; at the same time, the air in the entire first pit 1 Perform dust removal and purification.

The vibrating feeder 4 in this embodiment is located above the crushing unit, and discharges the crushing unit, so as to realize automatic blanking, without transfer equipment, improve efficiency, and reduce construction and operation costs. The crushing unit includes a crushing device 7, a conveyor 8, and an iron remover 9. The crushing device 7 crushes the blanking of the vibrating feeder 4, and a jaw crusher or an impact crusher can be used; The conveyor 8 conveys the discharge of the crushing device 7 to the screening unit, and a scraper conveyor or a belt conveyor can be used; the iron remover 9 is arranged above the conveyor 8 to Iron removal is performed on the crushed materials on the conveyor 8 . During the operation of the conveyor 8, the crushing device 7 continuously discharges materials, so that the materials are evenly spread on the conveyor. The iron remover 9 is arranged above the conveyor, and the ferromagnetic substances (such as iron blocks, steel bars, etc.) in the material are separated from the material under the magnetic force of the iron remover 9 . Of course, in different embodiments, the crushing unit can also adopt multiple crushing processes, so that the particle size of the construction waste material can be well homogenized.

The screening unit in this embodiment includes a multi-layer channel 10 that is installed obliquely and vibrates, screens and transports materials. The high end of the multi-layer channel 10 is provided with a material inlet 11, which is connected to the conveyor 8. In this way, automatic blanking is realized, no need for transfer equipment, improving efficiency, and reducing construction and operating costs. At the same time, the multi-layer channel 10 has a height difference, and the material slides naturally under the action of gravity, and is screened by the sieve holes at the bottom of the channel. It achieves the function of sorting materials with different particle sizes, and the types of materials with different particle sizes are related to the number of layers of the multi-layer channel 10; and the lower end is provided with multiple outlets (unmarked) equal to the number of layers, and The multiple conveyors 13 of the conveying unit are respectively connected in one-to-one correspondence; the multi-layer channel 10 is provided with at least one cross-sectional mutation structure for disturbing the material flow state in the direction of its length extension, and the cross-sectional mutation structure is stepped The step surface between two adjacent step structures is horizontal or inclined; the bend between the step structure and the step surface is rounded, chamfered or provided with a transition slope. In this way, under the action of vibration, the sieve hole at the bottom of the duct can obtain the sorting effect of different particle sizes in a short stroke, so the screening unit has the advantages of compact equipment and flexible installation, and is more suitable for underground projects In addition, the ladder structure dynamically cuts off the materials involved in each other, and the materials are not easy to stick during transportation, so the production reliability is high.

The multilayer channel 10 in the present embodiment is connected with the described feeding chute 3 through the conveying unit at the outlet of the layer channel 10 near the material inlet 11, so that the large particles of the uppermost layer of the screening unit On the one hand, the material can be transported as a finished product through the conveying unit, on the other hand, it can re-enter the feeding chute 3, and then be further broken into finer materials by the crushing unit to meet the production demand; A second dust removal pipe 12 connected to the dust collection unit is provided near the material inlet 11 . In this way, the flying dust during the movement in the screening unit can be sucked away by the dust collecting unit through the second dust removal pipe 12 and processed in a unified manner, which greatly solves the problem of flying dust in the material blanking process.

The conveyor in this embodiment is composed of one or more of a scraper conveyor, a belt conveyor, a screw feeder, an air conveying chute or a bucket elevator.

The multi-layer duct 10 in the present embodiment is connected with a hot air device 15 at a layer of duct 10 away from the material inlet 11, and the hot air unit 15 adopts a hot air blower. The overheating of the sieve hole can make the material get sufficient heat exchange and drying effect during the movement of the screening unit, so as to ensure the dryness of the material transported by the conveying unit to the outside of the first pit. Of course, in different embodiments, each layer of ducts in the multi-layer ducts 10 can be connected with the hot air device, and the above-mentioned purpose can also be achieved.

In this embodiment, the top surfaces of the first pit 1 and the second pit 2 are covered with cover plates, and there are inspection ports (not shown), ventilation ports (not shown) and materials on the cover plates. Input port (not shown), the material input port communicates with the feed port of the feed chute 3, and the output end of the conveying unit stretches out the cover plate, so that the different granularity materials produced are sent to the first Transportation outside the pit.

The processing system in this embodiment further includes a control unit arranged on the ground and connected to the feeding unit, the crushing unit, the screening unit, the conveying unit and the dust collecting unit respectively. In this way, without entering the first pit 1 and the second pit 2, the operator can pass through the monitoring device (not shown) installed in the first pit 1 and the second pit 2 and the control unit on the ground. Jointly control the operation below, which improves the safety of operation.

In general, the construction waste treatment system of the present invention has changed from the previous plane layout to a high-low drop layout, and realizes step-type automatic blanking, which occupies less land and has a compact structure. The previous belt conveyor transfer links are reduced, and the construction The efficiency of waste treatment and material transfer has been improved, and the entire construction waste treatment process is carried out in a closed pit, which is sound-proof and dust-reducing, making it more environmentally friendly.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in terms of form and Various changes may be made in the details without departing from the scope of the invention defined by the claims.

Claims (10)

1. a kind of closed construction refuse regenerated processing system, including feed unit, fragmentation cell, sieve unit, supply unit, Gather dust unit, which is characterized in that the feed unit, fragmentation cell, sieve unit, supply unit are connected successively by production technology It connects, and is arranged in the first melt pit of below ground；The unit that gathers dust is arranged in the second melt pit of below ground, and described First melt pit is connected；First melt pit is disposed adjacent with second melt pit, and surrounding sealing, top surface are covered with cover board respectively Form underground closed space.

2. closed construction refuse regenerated processing system according to claim 1, which is characterized in that the feed unit packet Feed skewed slot and oscillating feeder are included, the feed skewed slot is supported in the first melt pit by supporting rack, is inclined to set, with level Angle between face is 30 °~70 °, and lower end discharge port is connected with the oscillating feeder；The oscillating feeder is located at described broken The top of broken unit, to the fragmentation cell blanking.

3. closed construction refuse regenerated processing system according to claim 2, which is characterized in that the feed skewed slot Upper end is equipped with the first dust removing tube being connected with the unit that gathers dust, and multiple spray heads are equipped in first dust removing tube；Institute It states and is provided with turnover panel hermatic door at the upper end charge door of feed skewed slot；The unit that gathers dust uses fiber bag precipitator.

4. closed construction refuse regenerated processing system according to claim 1, which is characterized in that the fragmentation cell packet Breaker, conveyer, iron remover are included, the blanking of the oscillating feeder is crushed by the breaker, using jaw Crusher or impact crusher；The discharging of the breaker is delivered to sieve unit by the conveyer, defeated using scraper plate Send machine or ribbon conveyer；The iron remover is arranged in the top of the conveyer, with to the broken material on the conveyer It carries out removing iron.

5. closed construction refuse regenerated processing system according to claim 4, which is characterized in that the sieve unit packet Include inclined installation and vibrate, sieve and convey the multilayer exhausting of material, multilayer exhausting it is high-end set there are one feeding mouth, with institute It states conveyer to be connected, low side is equipped with the multiple discharge ports equal with its number of plies, and with multiple conveyers of the supply unit divides Yi Yiduiying it not be connected, it is prominent that multilayer exhausting is equipped at least one section for upsetting flow state on its length extending direction Structure changes.

6. closed construction refuse regenerated processing system according to claim 5, which is characterized in that the abrupt change of cross-section knot Structure is in hierarchic structure, and the step surface between adjacent two-stage hierarchic structure is in horizontally or diagonally to be arranged；The hierarchic structure and step Bending part rounding, chamfering between face are equipped with transitional slope face.

7. closed construction refuse regenerated processing system according to claim 5, which is characterized in that multilayer exhausting is close The discharge port of one layer of exhausting of feeding mouth is connected with the feed skewed slot；Multilayer exhausting is being equipped with and the receipts at feeding mouth The second dust removing tube that dirt unit is connected.

8. closed construction refuse regenerated processing system according to claim 5, which is characterized in that the conveyer uses One or more compositions in drag conveyor, ribbon conveyer, feed screw or bucket elevator.

9. closed construction refuse regenerated processing system according to claim 5, which is characterized in that multilayer exhausting is separate One layer of exhausting of feeding mouth is connected with hot air apparatus, and the hot air apparatus is air-heater.

10. closed construction refuse regenerated processing system according to claim 1, which is characterized in that the processing system Further include that arrangement is separately connected with the feed unit, fragmentation cell, sieve unit, supply unit, the unit that gathers dust on the ground Control unit.