CN114669479A

CN114669479A - Two-stage roller sorting rear-mounted sorting process for stock household garbage

Info

Publication number: CN114669479A
Application number: CN202210398871.8A
Authority: CN
Inventors: 张玲萍
Original assignee: Guangdong Hengyi Environmental Protection Group Co ltd
Current assignee: Guangdong Hengyi Environmental Protection Group Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-06-28
Anticipated expiration: 2042-04-15
Also published as: CN114669479B

Abstract

The invention provides a two-stage roller sorting rear-mounted sorting process for household garbage stocks, which comprises a primary roller screen, a tertiary winnowing machine, a secondary roller screen and a secondary butterfly screen. The second-stage drum screen comprises a drum screen feeding port, a drum screen upper material discharging port and a drum screen lower material discharging port. The second-stage butterfly screen comprises a butterfly screen feeding port, a butterfly screen upper material discharging port and a butterfly screen lower material discharging port. The first-stage drum sieve is used for sorting the stored household garbage for the first time, the third-stage winnowing machine is used for sorting the primary sorted materials for the second time, the second-stage drum sieve is used for sorting the secondary sorted materials, and the second-stage butterfly sieve is used for refining and sorting the oversize materials of the second-stage drum sieve. The invention has the characteristics of simple and reasonable layout, small occupied area, low operation cost and high separation efficiency, and the combustible separated by the invention is used as the derived fuel, has the characteristics of high combustion heat value and stable combustion, and is very suitable for being applied to the fields of drying engineering, cement manufacturing, heat supply engineering, power generation engineering and the like.

Description

Two-stage roller sorting rear-mounted sorting process for stock household garbage

Technical Field

The invention relates to the field of garbage sorting, in particular to a two-stage roller sorting rear-mounted sorting process for household garbage stocks.

Background

The Refuse Derived Fuel (RDF for short) has the characteristics of high heat value, stable combustion, easy transportation, easy storage, low secondary pollution, low discharge of dioxin substances and the like, and is widely applied to the fields of drying engineering, cement manufacturing, heat supply engineering, power generation engineering and the like. The emergence of Refuse Derived Fuel (RDF) undoubtedly brings about the vitality for the energy of refuse, and becomes a new growing point in the field of refuse utilization. Especially, the method is applied to cement kiln combustion in the cement industry, which has been practiced in the technical field, effectively promotes the cooperative disposal of urban domestic garbage by the cement kiln, and the utilization of the stored domestic garbage derived fuel as a substitute fuel of the cement kiln becomes a new energy-saving and environment-friendly starting point in the cement industry, promotes the cement industry to reduce energy resource consumption, builds resource-saving and environment-friendly cement enterprises, and realizes transformation upgrading and green development of the cement industry. At present, the stock domestic garbage is configured by combination of stock domestic garbage sorting equipment such as rolling sorting equipment, wind sorting equipment, vibrating sorting equipment, magnetic sorting equipment and the like, for example, Chinese patents with application numbers of 201610900726.X and a harmless environment-friendly treatment process of the stock domestic garbage, Chinese patents with application numbers of 201621461424.9 and a combined sorting system of the stock domestic garbage and the like which are applied earlier by the applicant of the invention sort the stock domestic garbage into combustible substances, non-combustible substances, fine soil and iron metal, so that the garbage of a stock garbage landfill is all excavated, screened and finally treated in an environment-friendly way. The separated combustible belongs to refuse derived fuel, but the combustible is mixed with more fine soil and has lower combustion heat value, so that the application of the combustible as alternative fuel in the cement industry is limited, and therefore, the combustible is required to be improved.

Disclosure of Invention

The invention aims to provide a two-stage roller sorting rear-mounted sorting process for the stored household garbage, which can efficiently, quickly and accurately sort the stored garbage and has the characteristics of simple and reasonable layout, small occupied area, low operation cost and high sorting efficiency; the combustible material separated by the invention is used as the derived fuel, has the characteristics of high combustion heat value and stable combustion, and is very suitable for being applied to the fields of drying engineering, cement manufacturing, heat supply engineering, power generation engineering and the like.

The purpose of the invention can be realized by the following technical scheme:

a two-stage drum sorting rear-mounted sorting process for the stored household garbage comprises a primary drum screen and a tertiary winnowing machine; the primary drum screen comprises a drum screen feeding port, a drum screen upper material discharging port and a drum screen lower material discharging port, the drum screen upper material discharging port of the primary drum screen is connected with a primary screen upper material conveying belt, and the drum screen lower material discharging port of the primary drum screen is connected with a first conveying belt; the three-stage winnowing machine comprises a winnowing feed inlet, and a heavy material discharge port, a medium material discharge port and a light material discharge port which are sequentially arranged along the airflow direction; the winnowing feed port is connected with the discharge end of the primary oversize material conveying belt, the heavy material discharge port is sequentially connected with the heavy material conveying belt and the fine soil gathering conveying belt, the medium material discharge port is connected with the medium material conveying belt, and the light material discharge port is connected with the light material conveying belt; the rear-mounted separation process for separating the household garbage storage secondary drum further comprises a second conveying belt, a feeding air blower, a secondary drum sieve and a fourth conveying belt, wherein the secondary drum sieve comprises a drum sieve feeding port, a drum sieve upper material discharging port and a drum sieve lower material discharging port, the feeding end of the second conveying belt is positioned below the discharging end of the medium material conveying belt, the discharging end of the second conveying belt is close to the drum sieve feeding port of the secondary drum sieve, the fourth conveying belt is positioned below the discharging end of the second conveying belt, the discharging end of the fourth conveying belt is connected to the fine soil collecting conveying belt, an air outlet of the feeding air blower is positioned between the discharging end of the second conveying belt and the fourth conveying belt and is just opposite to the drum sieve feeding port of the secondary drum sieve, the drum sieve upper material discharging port of the secondary drum sieve is connected with a combustible material conveying belt, and the drum sieve lower material discharging port of the secondary drum sieve is connected with the third conveying belt.

Preferably, the rear-mounted separation process for sorting the household garbage storage by the secondary drum further comprises a secondary butterfly sieve, the secondary butterfly sieve comprises a butterfly sieve feeding port, a butterfly sieve upper material discharging port and a butterfly sieve lower material discharging port, the butterfly sieve upper material discharging port of the secondary butterfly sieve is connected to the combustible conveying belt, the discharging end of the third conveying belt is connected to the upper portion of the butterfly sieve feeding port of the secondary butterfly sieve, and the butterfly sieve lower material discharging port of the secondary butterfly sieve is connected with a fine soil output belt.

Preferably, a middle conveying belt and a material receiving conveying belt positioned below the middle conveying belt are arranged below the discharge end of the heavy material conveying belt, the discharge end of the middle conveying belt is connected to the fine soil collecting conveying belt, and the discharge end of the material receiving conveying belt is connected to the light material conveying belt; and the air supply device is provided with an air supply outlet which is arranged between the discharge end of the heavy material conveying belt and the middle conveying belt and is opposite to the material receiving conveying belt.

Preferably, the discharge end of the light-weight conveyer belt is connected to the feed end of the third conveyer belt through a rear conveyer belt.

Preferably, the rear-mounted separation process for sorting the household garbage storage by the secondary roller further comprises a combustible material packer, wherein the feeding end of the combustible material packer is connected with the discharging end of the combustible material conveying belt.

Preferably, the sorting process for sorting the household garbage stocks in the rear-mounted mode by the secondary drum further comprises a vibrating hopper, wherein the discharge end of the vibrating hopper is connected with a drum screen feeding port of the primary drum screen; the vibration hopper, the first-level drum screen, the third-level winnowing machine and the second-level drum screen are sequentially arranged from front to back along the material conveying direction to form 1 set of multi-level drum sorting system.

Preferably, the multistage drum sorting system comprises at least 2 sets and is arranged side by side.

The invention has the following prominent substantive features and remarkable progress:

1. the invention adopts progressive separation configuration of primary drum screening separation, tertiary air separator separation and secondary drum screening separation to separate the stored domestic garbage into fine soil and combustible materials, and has the characteristics of high separation efficiency, short time consumption and low operation cost; when the medium materials conveyed by the second conveying belt enter the next-stage sorting stage by additionally arranging a feeding air blower, lighter materials mixed in the medium materials are blown into the secondary drum sieve by the feeding air blower, heavier materials in the medium materials are output by the fourth conveying belt, and the lighter materials in the medium materials continuously enter the secondary drum sieve to be screened out of combustible materials and fine soil; the secondary butterfly type screening is further added for separation, and roller undersize materials separated by the secondary roller screening are subjected to scattering refining separation, so that fine soil separation is more thorough, combustible materials are separated by the secondary roller screening and the secondary butterfly type screening more sufficiently, fine soil mixed with the separated combustible materials is effectively reduced, the content of the combustible materials is improved, and the combustion heat value and the combustion stability of the combustible materials are further ensured. Therefore, the combustible prepared by the invention is very suitable for being applied to the fields of drying engineering, cement manufacturing, heat supply engineering, power generation engineering and the like as a derived fuel.

2. According to the invention, the middle conveying belt and the material receiving conveying belt are arranged below the discharge end of the heavy material conveying belt, and the air supply device is arranged opposite to the material receiving conveying belt, so that lighter materials mixed in the heavy materials separated by the three-stage winnowing machine can be conveyed to the second-stage disc type sieve for separation, the combustible content in the heavy materials separated by the three-stage winnowing machine is reduced, and the combustible recovery rate is effectively improved.

3. The invention connects the combustible packer behind the combustible conveyer belt, so that the separated combustible can be directly compressed, bundled and packed, thereby not only reducing the transportation and arrangement cost of recycling the regenerated combustible, but also providing convenience for storing the combustible.

4. According to the invention, multiple sets of multi-stage roller sorting are sequentially arranged side by side from front to back along the material conveying direction through the vibrating hopper, the first-stage roller screen, the third-stage winnowing machine and the second-stage roller screen, so that the garbage sorting system has small occupied area and low operation cost.

Drawings

Fig. 1 is a schematic wire-frame flow diagram of a post-sorting process of secondary roller sorting of the household garbage inventory in embodiment 1.

Fig. 2 is a schematic view of a partial wire-frame flow of the post-sorting process of secondary roller sorting of the household garbage inventory in embodiment 2.

Fig. 3 is a schematic layout of the post-sorting process of secondary roller sorting of the household garbage inventory in embodiment 3.

Detailed Description

The invention will be further explained with reference to the drawings.

Example 1

As shown in figure 1, the rear-mounted separation process for separating the household garbage storage by the secondary roller comprises a vibration hopper 63, a primary roller screen 1, a tertiary winnowing machine 2, a secondary roller screen 4, a secondary butterfly screen 5 and a combustible packer 62.

The primary drum screen 1 comprises a drum screen feeding port, a drum screen upper material discharging port and a drum screen lower material discharging port, the stored household garbage enters the drum screen feeding port of the primary drum screen 1 from the discharging end of the vibration hopper 63, the drum screen upper material discharging port is connected with a primary screen upper material conveying belt 11, and objects discharged from the drum screen upper material discharging port enter the tertiary winnowing machine 2 through the primary screen upper material conveying belt 11 for secondary winnowing. The discharge port of the roller screen underflow of the primary roller screen 1 is connected with a first conveyer belt 31, and the heavy substances discharged from the discharge port of the roller screen underflow are stored as the roller screen underflow.

The three-stage winnowing machine 2 comprises a winnowing feed inlet, and a heavy material discharge port, a medium material discharge port and a light material discharge port which are sequentially arranged along the airflow direction. The winnowing feed port is connected with the discharge end of the primary oversize material conveyer belt 11, the heavy material discharge port is sequentially connected with a heavy material conveyer belt 21 and a fine soil collecting conveyer belt 211, the medium material discharge port is connected with a medium material conveyer belt 22, and the light material discharge port is connected with a light material conveyer belt 23. The heavy material from the heavy material outlet enters the fine soil collecting conveyer belt 211 through the heavy material conveyer belt 21 to be stored as fine soil and aggregate. The medium material from the medium material outlet is divided into two parts, one part enters the secondary drum screen 4 for continuous sorting, and the other part falls into the fourth conveying belt 34 under the action of the feeding air blower 3 and enters the fine soil collecting conveying belt 211 to be stored as fine soil and aggregate. The light material discharged from the light material outlet is stored as the light material.

Second grade drum sieve 4 is including drum sieve pan feeding mouth, drum sieve upper strata discharge gate and drum sieve lower strata discharge gate, the feed end of second conveyer belt 32 is located the discharge end below of well matter conveyer belt 22, the discharge end is close to the drum sieve pan feeding mouth of second grade drum sieve 4, the discharge end below of second conveyer belt 32 is located to fourth conveyer belt 34, its discharge end is connected to fine soil and collects conveyer belt 211, the air outlet of feeding air-blower 3 is located between the discharge end below of second conveyer belt 32 and fourth conveyer belt 34, and just to the drum sieve pan feeding mouth of second grade drum sieve 4, the drum sieve upper strata discharge gate of second grade drum sieve 4 is connected with combustible substance conveyer belt 30, the drum sieve lower strata discharge gate of second grade drum sieve 4 is connected with third conveyer belt 33. Combustible materials discharged from the material outlet of the roller screen enter the combustible material conveyer belt 30, the material outlet end of the combustible material conveyer belt 30 is connected with the material inlet end of the combustible material packer 62, and the combustible materials enter the combustible material packer to be packed and stored as the combustible materials. The mixture discharged from the discharge port of the roller screen underflow enters the second-stage butterfly screen 5 through the third conveyer belt 33 to be continuously sorted.

The second-level butterfly sieve 5 comprises a butterfly sieve feeding port, a butterfly sieve upper material discharging port and a butterfly sieve lower material discharging port, the butterfly sieve upper material discharging port of the second-level butterfly sieve 5 is connected to the combustible conveying belt 30, the discharging end of the third conveying belt 33 is connected to the upper portion of the butterfly sieve feeding port of the second-level butterfly sieve 5, and the butterfly sieve lower material discharging port of the second-level butterfly sieve 5 is connected with the fine soil output belt 50. Combustible materials discharged from the material outlet of the butterfly-type oversize material enter the combustible material conveyer belt 30, are packed by a combustible material packing machine and are stored as combustible materials. The fine soil at the discharge port of the butterfly screen underflow is transported by the fine soil output belt 50 and then stored as fine soil.

In the embodiment, the stored garbage is sorted by the primary rotary screen 1 and then enters the tertiary air separator 2 to separate medium materials, lighter materials mixed in the medium materials are blown into the secondary rotary screen 4 by the feeding blower 3, and the medium materials are sorted by the secondary butterfly screen 5 into combustible materials and fine soil to be stored respectively, so that the fine soil is thoroughly sorted, the sorting efficiency is high, the time consumption is short, and the operation cost is low. The diameter of the screen hole of the first-level drum screen 1 can be 35mm to 50mm, the diameter of the screen hole is 40mm in the embodiment, the diameter of the screen hole of the second-level drum screen 4 can be 20mm to 30mm, and the diameter of the screen hole is 25mm in the embodiment.

Example 2

As shown in fig. 2, the present embodiment is different from embodiment 1 in that: in the rear sorting process for the household garbage storage by the two-stage drum sorting according to the embodiment, an intermediate conveyer belt 212 and a material receiving conveyer belt 213 located below the intermediate conveyer belt 212 are arranged below the discharge end of the heavy material conveyer belt 21, the discharge end of the intermediate conveyer belt 212 is connected to the fine soil collecting conveyer belt 211, and the discharge end of the material receiving conveyer belt 213 is connected to the light material conveyer belt 23. An air supply device 52 is provided with an air supply outlet 521, the air supply device 52 is a blower (not shown), the air supply outlet 521 is arranged between the discharge end of the heavy object conveying belt 21 and the middle conveying belt 212 and is opposite to the material receiving conveying belt 213. The heavy material from the heavy material outlet enters the middle conveyor belt 212 before entering the fine soil gathering conveyor belt 211 through the heavy material conveyor belt 21, and a part of the light material is sent to the material receiving conveyor belt 213 and enters the light material conveyor belt 23 by the wind power output from the air supply outlet 521 of the air supply device 52, so that the combustible material in the garbage can be sorted more finely.

The difference between the present embodiment and embodiment 1 is also that in the post-sorting process of the secondary roller sorting of the household garbage inventory of the present embodiment, the discharge end of the light material conveyer belt 23 is connected to the feed end of the third conveyer belt 33 through the rear end conveyer belt 231, so that the light material enters the secondary butterfly sieve 5 to be sorted continuously, the content of the regenerated combustible material in the garbage is increased, and the content of the garbage in the sorted fine soil is reduced.

Example 3

As shown in fig. 3, the present embodiment is different from embodiment 2 in that: in the rear-mounted sorting process for sorting the household garbage storage secondary drums in the embodiment, the vibrating hopper 63, the primary drum sieve 1, the tertiary winnowing machine 2 and the secondary drum sieve 4 are sequentially arranged from front to back side by side along the material conveying direction to form 2 sets of multi-stage drum sorting systems, and garbage sorting is simultaneously performed through the 2 sets of drum sorting systems, so that the sorting efficiency is greatly improved, and the labor cost and the production investment are reduced.

Claims

1. A two-stage drum sorting rear-mounted sorting process for household garbage stocks comprises a primary drum screen (1) and a tertiary winnowing machine (2);

the primary drum screen (1) comprises a drum screen feeding port, a drum screen oversize material discharging port and a drum screen undersize material discharging port, the drum screen oversize material discharging port of the primary drum screen (1) is connected with a primary screen oversize material conveying belt (11), and the drum screen undersize material discharging port of the primary drum screen (1) is connected with a first conveying belt (31);

the three-stage winnowing machine (2) comprises a winnowing feed inlet, and a heavy material discharge port, a medium material discharge port and a light material discharge port which are sequentially arranged along the airflow direction; the winnowing feed port is connected with the discharge end of the primary oversize material conveyer belt (11), the heavy material discharge port is sequentially connected with a heavy material conveyer belt (21) and a fine soil collecting conveyer belt (211), the medium material discharge port is connected with a medium material conveyer belt (22), and the light material discharge port is connected with a light material conveyer belt (23);

the method is characterized in that: the device also comprises a second conveying belt (32), a feeding air blower (3), a second-stage drum sieve (4) and a fourth conveying belt (34), wherein the second-stage drum sieve (4) comprises a drum sieve feeding port, a drum sieve upper material discharging port and a drum sieve lower material discharging port, the feeding end of the second conveying belt (32) is positioned below the discharging end of the medium material conveying belt (22), the discharging end of the second conveying belt is close to the drum sieve feeding port of the second-stage drum sieve (4), the fourth conveying belt (34) is arranged below the discharging end of the second conveying belt (32), the discharging end of the fourth conveying belt is connected to a fine soil gathering conveying belt (211), an air outlet of the feeding air blower (3) is positioned between the discharging end of the second conveying belt (32) and the fourth conveying belt (34) and is just opposite to the drum sieve feeding port of the second-stage drum sieve (4), the drum sieve upper material discharging port of the second-stage drum sieve (4) is connected with a combustible material conveying belt (30), the discharge port of the drum screen underflow of the secondary drum screen (4) is connected with a third conveyer belt (33).

2. The two-stage roller sorting post-positioned sorting process for the household garbage stocks as claimed in claim 1, which is characterized in that: still including second grade butterfly sieve (5), second grade butterfly sieve (5) are including butterfly sieve pan feeding mouth, butterfly sieve material discharge gate and butterfly sieve unloading discharge gate, and the butterfly sieve material discharge gate of second grade butterfly sieve (5) is connected to combustible substance conveyer belt (30), and the discharge end of third conveyer belt (33) is connected to the butterfly sieve pan feeding mouth top of second grade butterfly sieve (5), and the butterfly sieve unloading discharge gate of second grade butterfly sieve (5) is connected with fine soil output tape (50).

3. The two-stage roller sorting post-positioned sorting process for the household garbage stocks as claimed in claim 1, which is characterized in that: a middle conveying belt (212) and a material receiving conveying belt (213) positioned below the middle conveying belt (212) are arranged below the discharge end of the heavy object conveying belt (21), the discharge end of the middle conveying belt (212) is connected to the fine soil collecting conveying belt (211), and the discharge end of the material receiving conveying belt (213) is connected to the light object conveying belt (23); an air supply device (52) is provided with an air supply outlet (521), and the air supply outlet (521) is arranged between the discharge end of the heavy material conveying belt (21) and the middle conveying belt (212) and is opposite to the material receiving conveying belt (213).

4. The secondary roller sorting post-separation process for the household garbage inventory as claimed in any one of claims 1 to 3, wherein: the discharge end of the light object conveying belt (23) is connected to the feeding end of the third conveying belt (33) through a rear end conveying belt (231).

5. The two-stage roller sorting post-separation process for the household garbage inventory as claimed in claim 4, which is characterized in that: the combustible material packaging machine is characterized by further comprising a combustible material packaging machine (62), wherein the feeding end of the combustible material packaging machine (62) is connected with the discharging end of the combustible material conveying belt (30).

6. The secondary roller sorting post-separation process for the household garbage inventory as claimed in any one of claims 1 to 3, wherein: the device also comprises a vibration hopper (63), wherein the discharge end of the vibration hopper (63) is connected with a drum screen feeding port of the primary drum screen (1); the vibration hopper (63), the first-stage drum screen (1), the third-stage winnowing machine (2) and the second-stage drum screen (4) are sequentially arranged from front to back along the material conveying direction to form 1 set of multi-stage drum sorting system.

7. The two-stage roller sorting post-positioned sorting process for the household garbage stocks as claimed in claim 6, which is characterized in that: the multi-stage roller sorting system comprises at least 2 sets of rollers which are arranged side by side.