CN111618078A - A construction waste recycling production system and application method - Google Patents

Abstract

The invention relates to a construction waste recycling production system. The construction waste recycling production system includes a primary screening unit, which includes a horizontal screen drum, and the horizontal drum is sequentially formed with first-stage screening sections with decreasing screen holes. , secondary sieve section and tertiary sieve section; the first-stage collecting bin, the second-stage collecting bin and the third-stage collecting bin are set up in conjunction with the first-stage sieve section, the second-stage sieve section and the third-stage sieve section respectively. The silo; the driving mechanism that drives the rotation of the horizontal screen drum, so that the material can be conveyed from the first end of the horizontal drum to the second end to realize step-by-step screening; the above-mentioned primary screening powder unit screens the garbage into three-grade materials Afterwards, the materials of different sizes are processed separately through the primary post-processing unit, the secondary post-processing unit and the tertiary post-processing unit to achieve targeted resource application, which greatly improves the processing efficiency and utilization rate of construction waste.

Description

A construction waste recycling production system and application method

technical field

The invention relates to the field of construction waste treatment, in particular to a construction waste recycling production system and an application method.

Background technique

Construction waste refers to the collective term for muck, waste concrete, waste masonry and other wastes generated in the production activities of people engaged in demolition, construction, decoration, repair and other construction industries.

At present, there are various ways to dispose of construction waste, including direct pulverization and reuse, which is not only incompletely pulverized, but also uses advanced equipment for the treatment of materials that are difficult to pulverize, resulting in low treatment efficiency and high treatment costs; Refractory materials such as steel bars are sorted out first and then crushed. Although this method can relatively reduce the processing cost, the crushing efficiency is also low, and the quality of the materials obtained by crushing is not high, resulting in a low utilization rate.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art, the present invention provides a construction waste recycling production system and an application method, so as to at least solve or alleviate one or more technical problems in the prior art, or at least provide a beneficial option.

The technical scheme adopted by the present invention for solving the above-mentioned technical problems is:

A construction waste recycling production system includes a primary screening unit, which includes a horizontal screen drum, the horizontal screen drum has a first end and a second end arranged along the direction of garbage disposal, and the horizontal drum is composed of a first end and a second end. From one end to the second end, a first-stage sieve section, a second-stage sieve section and a third-stage sieve section with decreasing sieve holes are formed in sequence to realize the screening of garbage of different sizes; the primary screening powder unit also includes a The first-stage collecting bin, the second-stage collecting bin and the third-stage collecting bin are set up in coordination with the first-stage screen section, the second-stage screen section and the third-stage screen section, so as to realize the classification and collection of the sieved garbage; the primary screening powder unit also It includes a drive mechanism that drives the rotation of the horizontal sieve drum, so as to be able to transport materials from the first end of the horizontal drum to the second end to achieve step-by-step screening; the above-mentioned primary screening powder unit sieves the garbage into three-level materials;

The primary post-processing unit, which includes a sand washing machine connected to the primary receiving bin, is used to process the primary materials with the smallest size. The main components of the primary materials are muck (soil containing fine sand), and sand washing The structure of the machine includes a washing tank and a rotary screen cylinder set in it. The muck enters the rotary screen cylinder and is cleaned with its rotation. The washed sand is discharged through the sand outlet as construction sand; the soil flows away with the water in the washing tank. It is discharged through the mud water outlet and enters the mud filter press for separation. The separated filter cake can be used for building green soil or brick making; the separated filtered water is returned to the washing tank through the filtering water return line to continue to use water for washing;

The secondary post-processing unit, which includes a first impact crusher or a high-speed centrifugal crusher connected to the secondary receiving bin, is used to process secondary materials of medium size, and the secondary materials are mainly waste bricks, crushed stones and Tile glass, on the one hand, can be transported to the first impact crusher, processed by shock wave (smashed by a sledgehammer), and the processed material is transported to the sand making machine through the conveying line to make sand, and the sand is used as a dry-mixed mortar. On the other hand, it can be transported to a high-speed centrifugal crusher for processing, and the powder obtained after processing is finer, and can be used as a filling material for cement commercial mixing stations. Secondary materials can be selected and processed according to actual needs;

The three-stage post-processing unit includes a jaw crusher connected to the three-stage receiving bin, which is mainly used for processing large-sized waste concrete blocks and large stones. processing steel structure); then transported to the second impact crusher connected to the discharge port of the jaw crusher, and processed into smaller materials by impact crushing (smashed by a sledgehammer); finally transported to the second impact crusher and the second impact crusher The vibrating screen connected to the discharge port can screen out crushed materials of different sizes, which are used for roadside stones, road bricks, building bricks, cement blocks, lattices, stones for commercial mixing stations, building steel cage pads or Subgrade cushion.

Optionally, the structure of the horizontal drum can be in the following form: the horizontal drum is arranged horizontally, at this time, the rotary conveying and screening can be realized by setting a spiral conveying sheet in it; the horizontal drum is arranged inclined downward along the direction of garbage disposal, For continuous screening, specifically, the inclination angle of the horizontal drum is 10-15 degrees.

Optionally, the sieving inner diameter of the primary sieve segment is larger than the sieving inner diameter of the secondary sieving segment, the sieving inner diameter of the secondary sieving segment is larger than the sieving inner diameter of the tertiary sieving segment, and a The first-stage screen section, the second-stage screen section and the third-stage screen section are coaxially arranged; in this way, the conveying speed of the garbage along the processing direction can be slowed down, so that the third-stage material can be screened more accurately.

Optionally, the vibrating screen has a powder material outlet and a crushed material outlet, a first conveying line is further arranged between the powder material outlet and the sand washing machine, and a second conveying line is also arranged between the powder material outlet and the dry powder silo. Two conveyor lines to realize different applications after the powder is screened out by the vibrating screen.

Optionally, the driving mechanism may adopt the following structure, which specifically includes: a support; two coaxially arranged active tires and two coaxially arranged driven tires are arranged at the four corners of the support, so as to be able to support the horizontal A drum, two active tires are arranged on one side of the horizontal drum, and two driven tires are arranged on the other side of the horizontal drum; a pulley driving structure that drives the active tires to rotate. Alternatively, the rotary sieving of the horizontal drum can also be realized by adopting the supporting roller support, the ring gear gear and the driving structure.

Optionally, a feeding port is provided at the front end of the primary screening unit, and a feeding funnel is provided obliquely above the feeding port to transport construction waste to the primary screening section.

Optionally, the first-level receiving bin includes a conical bin arranged under the horizontal drum to facilitate the collection of screened materials; and an arc-shaped shield arranged on the top of the side of the conical bin and configured with the horizontal drum. part in order to reduce the dust fugitive rate.

Optionally, the high-speed centrifugal crusher can adopt the following structure, including a machine room, a conical crushing channel is formed in the machine room, a negative pressure outlet is provided at the top of the crushing channel, and the outer side of the negative pressure outlet is connected to the powder selection. The crushing channel is provided with a turntable at the bottom, a crushing knife is provided on the top of the turntable, and a feed pipe is arranged above the turntable, and the material entering through the feed pipe reaches the On the turntable, under the action of the rotation of the turntable, the material collides with the crushing knife, and under the action of the negative pressure at the negative pressure outlet, the material swirls upward, on the one hand, the materials collide with each other; After interacting for a period of time, the material with smaller size is obtained. When the material reaches the size setting requirements, it is discharged from the negative pressure outlet, and the unreached continues to collide and smash. In order to improve the crushing efficiency, a crushing tip can also be arranged on the side wall of the crushing channel.

An application method of a construction waste recycling production system, which specifically includes the following steps:

The construction waste is first screened by the primary screening unit, and the first-grade materials with smaller size are screened out by the first-stage screen. The first-grade materials are washed by the sand washing machine. It is separated into mud and water by a mud filter press, the separated mud is used for greening soil or for pressing bricks, and the separated water is returned to the sand washing machine for reuse;

The secondary material with medium size is screened out by the secondary screen, the secondary material is crushed into aggregate by the first crusher, and the aggregate is used for making sand by dry-mixing mortar; or the secondary material is formed into powder by a high-speed centrifugal crusher. The powder is used as the filling material for the cement commercial mixing station;

The tertiary materials with larger size are screened out by the tertiary sieve. The tertiary materials are extruded by the jaw crusher and hammered and crushed by the second crusher in turn, and then enter the vibrating screen for screening, and four sizes of materials can be screened out. Materials: stone powder, 0.5 stone, 1.2 stone and 1.4 stone respectively, among which stone powder, 0.5 stone and 1.2 stone can be used for roadside stone, road brick, building brick, cement block, lattice, stone for commercial and mixed stations, Building reinforced cage pads or roadbed pads; 1.4 stones can be used for commercial and mixed station stones, road bricks or building bricks.

The present invention adopts the above structure, and has the advantages that the construction waste recycling production system realizes the continuous screening of construction waste through the setting of the primary screening unit. The treatment unit treatment realizes effective and targeted treatment of garbage, thereby improving the efficiency of garbage treatment. At the same time, the properties of the materials obtained by targeted treatment are relatively consistent, which can be directly used and improve the utilization rate.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present invention;

Fig. 2 is the schematic diagram of the horizontal drum and the drive mechanism in Fig. 1;

Fig. 3 is the cross-sectional structure schematic diagram of the first-stage screen section and the first-stage receiving bin in Fig. 2;

Fig. 4 is the structural representation of the high-speed centrifugal crusher in Fig. 1;

FIG. 5 is a block diagram of the construction waste recycling process and utilization process according to the present invention.

In the figure, 1. Horizontal drum, 2. Driving mechanism, 3. Sand washing machine, 4. Slurry filter press, 5. Filtration return line, 6. First impact crusher, 7. High-speed centrifugal crusher, 8 , dry mortar machine, 9, jaw crusher. 10. The second impact crusher, 11, the vibrating screen, 12, the first conveying line, 13, the dry powder bin, 14, the second conveying line, 15, the feeding funnel;

101, primary screen section, 102, secondary screen section, 103, tertiary screen section, 104, primary receiving bin, 1041, conical bin, 1042, arc shield, 105, secondary Receiving bin, 106, three-level receiving bin;

201, support, 202, active tire, 203, pulley drive structure;

71. Machine bin, 72, Crushing channel, 73, Negative pressure outlet, 74, Powder separator, 75, Turntable, 76, Crushing knife, 77, Feeding pipe, 78, Crushing tip.

Detailed ways

In order to clearly illustrate the technical features of the solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific details disclosed below. Example limitations.

In addition, in the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" "," "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction between the two elements. . For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or indirectly through an intermediary between the first and second features touch. In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in Fig. 1-2 and Fig. 5, in this embodiment, the construction waste recycling production system includes a primary screening unit, which includes a horizontal screen drum 1, and the horizontal screen drum 1 has a direction along the direction of garbage disposal. The first end and the second end are arranged, the horizontal drum 1 is sequentially formed with a first-stage screen section 101, a second-stage screen section 102 and a third-stage screen section with decreasing screen holes from the first end to the second end. 103, in order to realize the screening work of different sizes of garbage; the primary screening powder unit also includes the first-level receiving bins 104, The secondary receiving bin 105 and the tertiary receiving bin 106 are used to realize the sorting and collection of sieved garbage; the primary screening powder unit also includes a driving mechanism 2 that drives the rotation of the horizontal sieve drum 1, so that the first The end conveys materials to the second end to achieve step-by-step sieving; the above-mentioned primary sieving powder unit sieves the garbage into tertiary materials;

The production system also includes a primary post-processing unit. The primary post-processing unit includes a sand washing machine 3 connected to the primary receiving bin 101 to process primary materials with the smallest size. The main component of primary materials is slag. (soil containing fine sand), the structure of the sand washing machine 3 includes a washing tank and a rotary screen cylinder arranged therein, the slag enters the rotary screen cylinder, and is cleaned with its rotation, and the washed sand is discharged through the sand outlet for construction Use sand; the soil flows away with the water in the washing tank, is discharged through the mud water outlet, and enters the mud filter press 4 for separation. The separated filter cake can be used for building greening soil or brick making; the separated filtered water is filtered through the water return line. 5 Return to the washing pool to continue washing with water;

The production system also includes a secondary post-processing unit. The secondary post-processing unit includes a first impact crusher 6 or a high-speed centrifugal crusher 7 connected to the secondary receiving bin 12, which is used to process secondary materials of medium size. The materials are mainly waste bricks, crushed stones and tile glass. On the one hand, they can be transported to the first impact crusher 6 and processed by shock waves (smashed by a sledgehammer), and the processed materials are transported to the sand making machine 8 through the conveyor line. The sand is used as the aggregate for dry-mixed mortar; on the other hand, it can be transported to the high-speed centrifugal crusher 7 for processing, and the powder obtained after processing is finely collected into the dry powder silo 13, which can be used as the filling material for the cement commercial mixing station. Secondary materials can be selected and processed according to actual needs;

The production system also includes a three-stage post-processing unit, which includes a jaw crusher 9 connected to the three-stage receiving bin 103, which is mainly used for processing large-sized waste concrete blocks and large stones. Jaw crushing treatment (extrusion crushing method, which can handle steel structure); then transported to the second impact crusher 10 connected to the discharge port of the jaw crusher 9, and processed by impact crushing (smashed by a sledgehammer) into smaller Finally, it is transported to the vibrating screen 11 connected to the discharge port of the second impact crusher 10 to be able to screen out crushed materials of different sizes, which are stone powder, 0.5 stone, 1.2 stone and 1.4 stone, among which, stone powder, 0.5 stone Stones and 1.2 stones can be used for roadside stones, road bricks, building bricks, cement blocks, lattices, stones for commercial and mixed stations, building steel cage blocks or roadbed cushions to produce products with different properties; 1.4 Stones can be used as stones for commercial and concrete stations, bricks for roads or bricks for construction. It should be noted that the sizes of 0.5 pebbles, 1.2 pebbles and 1.4 pebbles are known to those skilled in the art, and will not be explained too much here.

It can be understood that the structure of the horizontal drum 1 can be in the following form: the horizontal drum is arranged horizontally, and at this time, the rotary conveying and screening can be realized by setting a screw conveyor in it; the horizontal drum 1 is inclined downward along the direction of garbage disposal. Set for continuous screening, specifically, the inclination angle of the horizontal drum 1 is 10-15 degrees.

Understandably, as shown in FIG. 2 , the sieving inner diameter of the primary sieve segment 101 is larger than the sieving inner diameter of the secondary sieving segment 102 , and the sieving inner diameter of the secondary sieving segment 102 is larger than that of the tertiary sieve. The screening inner diameter of the section 103, and the first-stage screening section 101, the second-stage screening section 102 and the third-stage screening section 103 are coaxially arranged; in this way, the conveying speed of the garbage along the processing direction can be slowed down, so as to screen more accurately. There are three grades of materials.

Understandably, the vibrating screen 11 has a powder outlet and a crushed outlet, a first conveying line 12 is also provided between the powder outlet and the sand washing machine, and there is also a gap between the powder outlet and the dry powder bin 13 . A second conveying line 14 is provided to realize different applications after the powder is screened out by the vibrating screen.

It can be understood that, as shown in FIG. 2 , the drive mechanism 2 can adopt the following structure, which specifically includes: a support 201 ; two coaxially arranged active tires 202 and two The driven tires are capable of supporting the horizontal drum 1, two active tires 202 are arranged on one side of the horizontal drum 1, and two driven tires are arranged on the other side of the horizontal drum 1; The drive structure of the pulley is specifically the gear set structure of the motor, the conveyor belt, the shaft, the connecting shaft and the conveyor belt. Alternatively, the rotary sieving of the horizontal drum can also be realized by adopting the supporting roller support, the ring gear gear and the driving structure.

It is understandable that a feeding port is provided at the front end of the primary screening unit, and a feeding funnel 15 is provided obliquely above the feeding port to transport construction waste to the primary screening section.

It can be understood that, as shown in FIG. 3 , the first-level receiving bin 104 includes a conical bin 1041 arranged below the horizontal drum to facilitate the collection of screened materials; The arc-shaped shielding portion 1042 is arranged in the shape of the type roller 1, so as to reduce the dust raising rate conveniently.

Understandably, as shown in FIG. 4 , the high-speed centrifugal crusher 7 can adopt the following structure, which specifically includes a machine room 71, and a conical crushing channel 72 is formed in the machine room 71, and the top of the crushing channel 72 is provided with negative pressure. The outlet 73, the outer side of the negative pressure outlet 73 is connected to a powder separator 74 to screen out the powder of the required size; the bottom of the pulverizing channel 72 is provided with a turntable 75, and the top of the turntable 75 is provided with a crushing knife 76, The top of the turntable 75 is provided with a feed pipe 77 , and the material entering through the feed pipe 76 is sent to the turntable 75 . Under the rotation of the turntable 75 , the material collides with the crushing knife 76 , and under the negative pressure of the negative pressure outlet 73 , the material When the swirl flows upward, on the one hand, the materials collide with each other; on the other hand, the materials collide with the side wall of the crushing channel, and the two phases act for a period of time to obtain materials with smaller size. It is discharged, and the unreached continues to collide and smash. In order to improve the crushing efficiency, a crushing tip 78 can also be provided on the side wall of the crushing channel.

The above-mentioned specific embodiments are not intended to limit the protection scope of the present invention. For those skilled in the art, any alternative improvements or transformations made to the embodiments of the present invention fall within the protection scope of the present invention. What is not described in detail in the present invention is known to those skilled in the art.

Claims (10)

1. a construction waste recycling production system, is characterized in that, comprises: The primary screening unit includes a horizontal screen drum, the horizontal screen drum has a first end and a second end arranged along the garbage disposal direction, and the horizontal drum is sequentially formed with a screen from the first end to the second end The primary screen section, the secondary screen section and the tertiary screen section with decreasing holes; The first-stage receiving bin and the third-stage receiving bin; the driving mechanism for driving the rotation of the horizontal screen drum, so as to be able to convey materials from the first end of the horizontal drum to the second end; A primary post-processing unit, which includes a sand washing machine connected to a primary receiving bin, the sand washing machine has a sand outlet and a mud water outlet, the mud water outlet is connected to a mud filter press, and the mud filter press There is a filter water return line between the sand washing machine and the sand washing machine; The secondary post-processing unit includes a first impact crusher or/and a high-speed centrifugal crusher connected to the secondary receiving bin, the discharge port of the first impact crusher is connected to a sand making machine, and the high-speed The discharge port of the centrifugal crusher is connected with a dry powder bin; The three-stage post-processing unit includes a jaw crusher connected to the third-stage receiving bin; a second impact crusher connected to the discharge port of the jaw crusher; and a vibrating screen connected to the discharge port of the second impact crusher , in order to be able to screen out crushed materials of different sizes. 2 . The construction waste recycling production system according to claim 1 , wherein the horizontal drum is inclined downward along the waste disposal direction. 3 . 3 . The construction waste recycling production system according to claim 2 , wherein the inclination angle of the horizontal drum is 10-15 degrees. 4 . 4 . The construction waste recycling production system according to claim 1 , wherein the screening inner diameter of the primary screen section is larger than the screening inner diameter of the secondary screen section, and the The screening inner diameter is larger than the screening inner diameter of the third-stage screening section, and the first-stage screening section, the second-stage screening section and the third-stage screening section are coaxially arranged. 5 . The construction waste recycling production system according to claim 1 , wherein the vibrating screen has a powder outlet and a crush outlet, and a first conveying line is arranged between the powder outlet and the sand washing machine. 6 . , a second conveying line is arranged between the powder outlet and the dry powder bin. 6. The construction waste recycling production system according to any one of claims 1-5, wherein the driving mechanism comprises: support; Two coaxially arranged active tires and two coaxially arranged driven tires are arranged at the four corners of the support to support the horizontal drum. The two active tires are arranged on one side of the horizontal drum, and the two driven tires The tire is arranged on the other side of the horizontal drum; A pulley drive structure that drives the active tires to rotate. 7 . The construction waste recycling production system according to claim 1 , wherein the front end of the primary screening unit is provided with a feeding port, and a feeding funnel is provided obliquely above the feeding port. 8 . 8 . The construction waste recycling production system according to claim 1 , wherein the first-level receiving bin comprises a conical bin arranged under the horizontal drum; The arc-shaped shielding part is arranged in the form of a roller. 9. The construction waste recycling production system according to claim 1, wherein the high-speed centrifugal crusher comprises: Machine room, a conical crushing channel is formed in the machine room, and the top of the crushing channel is provided with a negative pressure outlet; A turntable arranged at the bottom of the crushing channel, the top of the turntable is provided with a crushing knife; a feeding pipe, which extends into the crushing channel and is suspended above the turntable; a powder separator, which is connected to the outside of the negative pressure outlet; A crushing tip is also provided on the side wall of the crushing channel. 10. An application method of a construction waste recycling production system, characterized in that it comprises the following steps: the construction waste is screened by a primary screening unit, the first-grade material is screened out by the first-grade screen, and the first-grade material is subjected to sand washing. Machine washing, the washed sand is used for construction, the washed mud water is separated into mud and water by a mud filter press, the separated mud is used for greening soil or pressed bricks, and the separated water is returned to the sand washing machine for reuse; The secondary material is screened out by the secondary screen, the secondary material is crushed into aggregate by the first crusher, and the aggregate is used for making sand by dry-mixing mortar; or the secondary material is formed into powder by a high-speed centrifugal crusher. It can be used as filling material for cement commercial mixing station; The tertiary materials are screened out by the tertiary sieve, and the tertiary materials are extruded by the jaw crusher and hammered and crushed by the second crusher, and then enter the vibrating screen for screening, and the materials of different sizes are screened out for use along the road. Stones, road bricks, building bricks, cement blocks, lattices, stones for commercial and mixed stations, building steel cage blocks or roadbed cushions.

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