CN102671854A - Two-section drum screen for municipal domestic waste - Google Patents

Two-section drum screen for municipal domestic waste Download PDF

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Publication number
CN102671854A
CN102671854A CN2012101386630A CN201210138663A CN102671854A CN 102671854 A CN102671854 A CN 102671854A CN 2012101386630 A CN2012101386630 A CN 2012101386630A CN 201210138663 A CN201210138663 A CN 201210138663A CN 102671854 A CN102671854 A CN 102671854A
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trommel
screen
section
hanging
drum
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CN102671854B (en
Inventor
王树众
李学东
陈林
罗永忠
孟海鱼
赵军
王龙飞
施海华
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SICHUAN CHUNRUN ENVIRONMENTAL PROTECTION ENERGY TECHNOLOGY Co Ltd
Xian Jiaotong University
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SICHUAN CHUNRUN ENVIRONMENTAL PROTECTION ENERGY TECHNOLOGY Co Ltd
Xian Jiaotong University
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Priority to CN201210138663.0A priority Critical patent/CN102671854B/en
Publication of CN102671854A publication Critical patent/CN102671854A/en
Priority to PCT/CN2012/085416 priority patent/WO2013166822A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/007Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls specially adapted for disintegrating refuse
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/02Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with perforated container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18Drum screens
    • B07B1/22Revolving drums
    • B07B1/24Revolving drums with fixed or moving interior agitators

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

本发明公开了一种用于城市生活垃圾的两段式滚筒筛,包括固定机架、安装在固定机架上的滚筒筛和滚筒筛驱动装置;滚筒筛包括相互连接的滚筒筛入口段和滚筒筛出口段;给料口安装于滚筒筛入口段的入口处,滚筒筛的下方设有筛下物收集装置;滚筒筛入口段和滚筒筛出口段的圆周方向上布置有若干筛孔,滚筒筛入口段圆周内壁安装有若干破袋刀,滚筒筛入口段内设有与所述破袋刀相配合的清刀装置;滚筒筛入口段和滚筒筛出口段的外周设有清理筛孔的清孔装置;滚筒筛出口段圆周内壁安装有若干长条物挑挂装置,在滚筒筛出口段内安装有三排挂针链。本发明可以有效地达到筛分、破袋、收集长条物的功能,为城市生活垃圾的分类以及资源化利用创造了有利的条件。

The invention discloses a two-stage trommel screen used for municipal domestic waste, which comprises a fixed frame, a trommel mounted on the fixed frame and a trommel driving device; the trommel comprises a trommel inlet section and a drum connected to each other Screen outlet section; the feeding port is installed at the entrance of the trommel screen entrance section, and an underscreen material collection device is provided under the trommel screen; several sieve holes are arranged in the circumferential direction of the trommel screen entrance section and the trommel exit section, and the trommel screen A number of bag-breaking knives are installed on the inner wall of the inlet section, and a knife cleaning device matching the bag-breaking knives is provided in the inlet section of the drum screen; a cleaning hole for cleaning the sieve holes is provided on the outer circumference of the inlet section of the drum screen and the outlet section of the drum screen Device; the inner wall of the circumference of the trommel exit section is equipped with a number of long strip hanging devices, and three rows of hanging needle chains are installed in the trommel exit section. The invention can effectively achieve the functions of screening, breaking bags and collecting long strips, and creates favorable conditions for the classification and resource utilization of urban domestic garbage.

Description

一种用于城市生活垃圾的两段式滚筒筛A two-stage drum screen for municipal solid waste

技术领域 technical field

本发明属于资源综合利用技术领域,特别是涉及一种用于城市生活垃圾的两段式滚筒筛。The invention belongs to the technical field of comprehensive utilization of resources, in particular to a two-stage drum screen used for municipal solid waste.

背景技术 Background technique

随着国家经济快速发展,城市生活垃圾产生量急剧增长。2010年,全国城市生活垃圾清运量达1.5亿吨,垃圾的填埋与堆放占用土地达80多万亩,全国2/3的大中城市陷入垃圾的包围,1/4的城市已没有合适的垃圾堆放场所,新的垃圾场选址和建设都面临困难。预计至2020年,全国城市生活垃圾清运量将达2.5亿吨,垃圾处理问题迫在眉睫。With the rapid development of the country's economy, the amount of municipal solid waste has increased dramatically. In 2010, the national municipal solid waste removal volume reached 150 million tons, and the landfill and storage of waste occupied more than 800,000 mu of land. Two-thirds of the large and medium-sized cities in the country were surrounded by waste, and one-fourth of the cities had no suitable facilities. It is difficult to select the location and construction of new garbage dumps. It is estimated that by 2020, the national municipal solid waste removal volume will reach 250 million tons, and the problem of waste disposal is imminent.

目前我国垃圾处理主要采用填埋法、焚烧法和堆肥法。填埋场极易产生富含CH4的填埋气,引起爆炸,还会产生大量垃圾渗滤液,其中含有重金属、有毒有害的有机化学污染物及大量病毒病原菌。垃圾焚烧过程中极易产生剧毒性致癌物质“二噁英”,难以在线监测且累积效应严重,焚烧法面临极大的社会公众压力,美国日本等发达国家已持续关停垃圾焚烧电厂。堆肥法由于垃圾分类不精细,塑料、铁、玻璃等残留在制肥原料中造成肥料不净,造成土壤污染。填埋法、焚烧法和堆肥法均无法彻底实现垃圾处理的无害化、资源化和减量化。Currently, landfill, incineration and composting are the main methods of waste disposal in my country. Landfills are prone to produce landfill gas rich in CH 4 , causing explosions, and a large amount of landfill leachate, which contains heavy metals, toxic and harmful organic chemical pollutants, and a large number of viral pathogens. The highly toxic carcinogen "dioxin" is easily produced during the waste incineration process, which is difficult to monitor online and has a serious cumulative effect. The incineration method is facing great public pressure. Developed countries such as the United States and Japan have continued to shut down waste incineration power plants. In the composting method, due to poor classification of garbage, plastic, iron, glass, etc. remain in the raw materials for fertilizer making, making the fertilizer unclean and causing soil pollution. Landfill, incineration and composting methods cannot completely realize the harmlessness, resource utilization and reduction of waste disposal.

城市生活垃圾分选与综合利用技术利用机械方法高效分选出垃圾不同成分,针对分选出得不同物质加以不同的资源化利用方式。垃圾分选与综合利用技术有效整合了生活垃圾分选技术及焚烧、堆肥等垃圾资源化利用方式,可以实现垃圾处理彻底的减量化、资源化及无害化。Municipal solid waste sorting and comprehensive utilization technology uses mechanical methods to efficiently sort out different components of garbage, and implements different resource utilization methods for different sorted substances. Garbage sorting and comprehensive utilization technology effectively integrates domestic waste sorting technology and waste resource utilization methods such as incineration and composting, and can achieve thorough waste reduction, resource utilization and harmless treatment.

我国的垃圾分选与综合利用技术起步较晚,设备及工艺水平较低。在生活垃圾资源化利用方面,垃圾的筛分是处理过程中必不可少的工艺过程,而适用于生活垃圾筛分的设备通常采用圆筒形的滚筒筛。由于我国生活垃圾的成分比较复杂,塑料、餐厨类垃圾居多,国外的生活垃圾分选设备不能很好地适应我国的城市生活垃圾的分选,而我国现有的滚筒筛分设备又存在以下不足:my country's waste sorting and comprehensive utilization technology started late, and the level of equipment and technology is low. In terms of domestic waste resource utilization, waste screening is an essential process in the treatment process, and equipment suitable for domestic waste screening usually uses cylindrical drum screens. Due to the complex composition of domestic waste in my country, most of which are plastic and kitchen waste, domestic waste sorting equipment abroad cannot be well adapted to the sorting of domestic waste in my country, and the existing drum screening equipment in my country has the following problems: insufficient:

(1)滚筒筛只能起到基本的筛分功能,不能实现破袋的功能;(1) The trommel screen can only perform the basic screening function, and cannot realize the function of breaking bags;

(2)滚筒筛没有对城市生活垃圾中的塑料进行有效的分选,这就给之后的分选择和资源化利用带来了困难。(2) The trommel screen did not effectively sort the plastics in municipal solid waste, which brought difficulties to the subsequent sorting and resource utilization.

鉴于上述因素制约了我国生活垃圾的资源化利用,因此一些可以用于我国生活垃圾分选的设备还在不断开发之中。In view of the above factors that restrict the resource utilization of domestic waste in our country, some equipment that can be used for sorting domestic waste in our country is still under development.

发明内容 Contents of the invention

本发明的目的是解决现有滚筒筛只能起到筛分功能的问题,提供了一种结构新颖、处理效率高的两段式多功能滚筒筛,实现了筛分、破袋、挑长物以及收集长条物等功能。The purpose of the present invention is to solve the problem that the existing trommel screen can only perform the screening function, and provides a two-stage multifunctional trommel screen with a novel structure and high processing efficiency, which realizes screening, bag breaking, and elongated objects And functions such as collecting long strips.

为了实现上述目的,本发明采用以下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:

一种用于城市生活垃圾的两段式滚筒筛,包括固定机架、安装在固定机架上的滚筒筛和滚筒筛驱动装置;滚筒筛包括相互连接的滚筒筛入口段和滚筒筛出口段;给料口安装于滚筒筛入口段的入口处,滚筒筛的下方设有筛下物收集装置;滚筒筛入口段和滚筒筛出口段的圆周方向上布置有若干筛孔,滚筒筛入口段圆周内壁安装有若干破袋刀,滚筒筛入口段内设有与所述破袋刀相配合的清刀装置;滚筒筛入口段和滚筒筛出口段的外周设有清理筛孔的清孔装置;滚筒筛出口段圆周内壁安装有若干长条物挑挂装置,在滚筒筛出口段内安装有三排挂针链组成的长条物收集装置。A two-stage drum screen for municipal solid waste, comprising a fixed frame, a drum screen mounted on the fixed frame, and a drum screen driving device; the drum screen includes a drum screen inlet section and a drum screen outlet section connected to each other; The feeding port is installed at the entrance of the trommel inlet section, and an undersize collection device is installed under the trommel screen; several sieve holes are arranged in the circumferential direction of the trommel inlet section and the trommel outlet section, and the inner wall of the trommel inlet section circumference A number of bag-breaking knives are installed, and a knife-cleaning device matching the bag-breaking knives is provided in the entrance section of the trommel screen; a hole-cleaning device for cleaning the sieve holes is provided on the outer circumference of the entrance section of the trommel screen and the exit section of the trommel screen; The inner wall of the outlet section is equipped with a number of hanging devices for long strips, and a long strip collection device consisting of three rows of needle chains is installed in the exit section of the trommel screen.

优选的,滚筒筛与水平方向间夹角为3°~8°。Preferably, the angle between the drum screen and the horizontal direction is 3°-8°.

优选的,破袋刀的形状为四棱锥形,其一侧面垂直于破袋刀底面。Preferably, the shape of the bag breaking knife is a quadrangular pyramid, one side of which is perpendicular to the bottom surface of the bag breaking knife.

优选的,破袋刀焊接在钢板上,钢板采用嵌入的方式安装在滚筒筛入口段内壁圆周上。Preferably, the bag breaking knife is welded on the steel plate, and the steel plate is installed on the inner wall circumference of the entrance section of the trommel in an embedded manner.

优选的,清刀装置固定在圆盘上,其转动方向与破袋刀的转动方向相反。Preferably, the knife cleaning device is fixed on the disc, and its rotation direction is opposite to that of the bag breaking knife.

优选的,三排挂针链包括第一挂针链、第二挂针链和第三挂针链;第一挂针链、第二挂针链和第三挂针链上均设有若干挂针;第一挂针链和第二挂针链的间距为0.1D,第二挂针链和第三挂针链的间距分别为0.12D;第一挂针链和第二挂针链位于滚筒筛中心一侧,第三挂针链位于滚筒筛中心另一侧;第三挂针链偏离滚筒中心0.07D;,挂针长度为0.25D,其中D为滚筒筛直径。Preferably, the three rows of hanging needle chains include the first hanging needle chain, the second hanging needle chain and the third hanging needle chain; needle; the distance between the first hanging needle chain and the second hanging needle chain is 0.1D, and the distance between the second hanging needle chain and the third hanging needle chain is 0.12D respectively; the first hanging needle chain and the second hanging needle chain are located on the drum On one side of the screen center, the third hanging pin chain is located on the other side of the drum screen center; the third hanging pin chain is 0.07D away from the center of the drum; the length of the hanging pin is 0.25D, where D is the diameter of the drum screen.

相对于现有技术,本发明所述的一种用于城市生活垃圾的两段式滚筒筛,其优点在于:Compared with the prior art, a two-stage trommel screen for municipal solid waste according to the present invention has the advantages of:

(1)本发明所述的一种用于城市生活垃圾的两段式滚筒筛将传统单独使用的破袋刀和大长条物挑挂及收集装置有机地结合,实现了破袋、挑挂并收集长条物的功能,实现了塑料类垃圾的分选及回收。(1) A two-stage trommel screen used for municipal solid waste according to the present invention organically combines the traditional bag breaking knife used alone with the large strip hanging and collecting device, and realizes bag breaking, hanging and hanging And the function of collecting long pieces realizes the sorting and recycling of plastic waste.

(2)本发明所述的一种用于城市生活垃圾的两段式滚筒筛破袋刀的形状为四棱锥形,其一侧面垂直于破袋刀底面,提高了破袋刀的破袋效率。(2) The shape of a two-stage trommel bag-breaking knife for municipal solid waste according to the present invention is a quadrangular pyramid, one side of which is perpendicular to the bottom surface of the bag-breaking knife, which improves the bag-breaking efficiency of the bag-breaking knife .

(3)本发明所述的一种用于城市生活垃圾的两段式滚筒筛的长条物收集装置由第一挂针链、第二挂针链和第三挂针链三排挂针链组成,每条挂针链上都安装有挂针。由于生活垃圾下落时呈抛物线状,通过计算,采用三排挂针链,第一挂针链和第二挂针链、第二挂针链和第三挂针链的间距分别为0.1D,0.12D,第一挂针链和第二挂针链位于滚筒筛中心一侧,第三挂针链位于滚筒筛中心另一侧;第三挂针链偏离滚筒中心0.07D,挂针长度为0.25D,其中D为滚筒直径。按此布置,长条物收集装置的收集效率最高,经济性效果最好。(3) A long object collection device for a two-stage drum screen used for municipal solid waste according to the present invention consists of three rows of needle chains: the first needle chain, the second needle chain and the third needle chain Composition, hanging pins are installed on each hanging pin chain. Since domestic garbage falls in a parabolic shape, by calculation, three rows of needle chains are used, and the distances between the first chain and the second chain, the second chain and the third chain are 0.1D and 0.12 respectively. D. The first pin chain and the second pin chain are located on one side of the center of the drum screen, and the third pin chain is located on the other side of the center of the drum screen; the third pin chain is 0.07D away from the center of the drum, and the length of the pin is 0.25D , where D is the drum diameter. Arranged according to this, the collecting efficiency of the strip collecting device is the highest, and the economic effect is the best.

综上所述,利用所述的两段式滚筒筛,可以有效地达到筛分、破袋、收集长条物的功能,为城市生活垃圾的分类以及资源化利用创造了有利的条件。To sum up, the two-stage trommel screen can effectively achieve the functions of screening, breaking bags, and collecting long strips, creating favorable conditions for the classification and resource utilization of municipal solid waste.

附图说明 Description of drawings

下面结合附图和具体实施方式对本发明做进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

图1是两段式滚筒筛总体结构示意图。Figure 1 is a schematic diagram of the overall structure of a two-stage trommel screen.

图2是两段式滚筒筛入口段轴向剖视图。Fig. 2 is an axial sectional view of the inlet section of the two-stage trommel screen.

图3是两段式滚筒筛出口段轴向剖视图。Fig. 3 is an axial sectional view of the outlet section of the two-stage trommel screen.

图4是两段式滚筒筛破袋刀结构示意图。Fig. 4 is a structural schematic diagram of a two-stage trommel bag breaking knife.

图5是图4的左视图。Fig. 5 is a left side view of Fig. 4 .

图中,1、滚筒筛入口段;101、筛孔;102、破袋刀;103、清刀装置;104、螺纹孔;105、钢板;2、给料口;3、生活垃圾;4、滚筒筛驱动装置;5、滚筒筛出口段;501、长条物挑挂装置;502、503、504、挂针链;6、清孔装置;7、筛下物收集装置;8、固定机架。In the figure, 1, drum screen entrance section; 101, screen hole; 102, bag breaking knife; 103, knife cleaning device; 104, threaded hole; 105, steel plate; 2, feeding port; 3, household garbage; 4, drum Sieve driving device; 5. Exit section of trommel screen; 501. Strip hanging device; 502, 503, 504, hanging pin chain; 6. Hole cleaning device; 7. Undersieve collecting device; 8. Fixed frame.

具体实施方式 Detailed ways

请参阅图1至图5所示,本发明一种用于城市生活垃圾的两段式滚筒筛,包括固定机架8、安装在固定机架8上的滚筒筛和滚筒筛驱动装置4;滚筒筛包括相互连接的滚筒筛入口段1和滚筒筛出口段5;给料口2安装于滚筒筛入口段1的入口处,滚筒筛的下方设有筛下物收集装置7;滚筒筛入口段1和滚筒筛出口段5的圆周方向上布置有若干筛孔101,滚筒筛入口段1圆周内壁安装有若干破袋刀102,滚筒筛入口段1内设有与所述破袋刀102相配合的清刀装置103;滚筒筛入口段1和滚筒筛出口段5的外周设有清理筛孔101的清孔装置6;滚筒筛出口段5圆周内壁安装有若干长条物挑挂装置501,在滚筒筛出口段5内安装有三排挂针链502、503、504组成的长条物收集装置。滚筒筛与水平方向间夹角β为3°~8°。破袋刀102焊接在钢板105上,采用嵌入的方式安装在滚筒筛入口段1内壁圆周上,拆卸时利用螺杆经螺纹孔104将焊有破袋刀102的钢板105顶起,并从一端将钢板105抽出进行拆卸。Referring to Fig. 1 to Fig. 5, a two-stage trommel screen for municipal solid waste of the present invention comprises a fixed frame 8, a trommel screen mounted on the fixed frame 8 and a trommel drive device 4; The screen includes a trommel inlet section 1 and a trommel outlet section 5 connected to each other; the feeding port 2 is installed at the entrance of the trommel inlet section 1, and an undersize collection device 7 is provided under the trommel; the trommel inlet section 1 Several sieve holes 101 are arranged on the circumferential direction of the trommel outlet section 5, and a number of bag-breaking knives 102 are installed on the circumferential inner wall of the trommel inlet section 1. Knife cleaning device 103; the outer periphery of the trommel inlet section 1 and the trommel outlet section 5 is provided with a cleaning device 6 for cleaning the sieve holes 101; the inner wall of the trommel outlet section 5 circumference is equipped with a number of strip hanging devices 501, A long object collecting device composed of three rows of hanging pin chains 502, 503, 504 is installed in the screen outlet section 5. The angle β between the drum screen and the horizontal direction is 3°~8°. The bag-breaking knife 102 is welded on the steel plate 105, and is installed on the inner wall circumference of the trommel inlet section 1 in an embedded manner. When disassembling, the steel plate 105 welded with the bag-breaking knife 102 is jacked up by a screw through the threaded hole 104, and the bag-breaking knife 102 is welded from one end. The steel plate 105 is pulled out for disassembly.

生活垃圾经物料输送机输送到达到一定转速的两段式滚筒筛的前段。进入滚筒筛内的生活垃圾跟随滚筒筛一起转动。当生活垃圾转动达到一定高度时,生活垃圾以抛物线的运动轨迹被抛出,落回到筛底,重复这样的过程,使生活垃圾在滚筒内达到不断翻滚的状态。在不断翻滚的过程中,粒径小于筛孔直径的物料将经过筛孔下落到筛下收集装置当中,粒径大于筛孔直径的物料则沿着筒壁从筛筒下端出口排出,从而实现筛分的功能。在生活垃圾被抛起下落到滚筒筛底时,筛筒前段安装的破袋刀将扎进塑料袋、衣物等物料中,再通过其他物料的挤压、撕扯等作用,将塑料袋、衣物等物料划破,从而实现破袋、破衣物的功能。经破袋后的塑料袋、衣物等,随着滚筒筛的转动进入到两段式滚筒筛的后段。在滚筒筛的后段筒壁圆周方向上安装有长条物挑挂装置,在中心附件安装有长条物收集收集装置。破袋后的塑料袋和衣物在随滚筒筛转动的过程当中,将被长条物挑挂装置挑起,达到一定高度后滑落,下落到长条物收集装置上,输送到滚筒外,从而实现了破袋与长条物的收集功能。为了防止筛孔被含水量较高的生活垃圾堵塞,在筛筒的外壁安装有筛孔清理装置。清孔装置与筛孔配合,当筛孔转到清孔装置时,清孔装置对筛孔进行清理,从而现实清孔功能。Household waste is transported by the material conveyor to the front section of the two-stage drum screen that reaches a certain speed. Domestic garbage entering the trommel screen rotates with the trommel screen. When the domestic waste rotates to a certain height, the domestic waste is thrown out with a parabolic trajectory and falls back to the bottom of the screen. This process is repeated, so that the domestic waste reaches a state of continuous tumbling in the drum. In the process of continuous tumbling, the material whose particle size is smaller than the sieve hole diameter will pass through the sieve hole and fall into the under-sieve collection device, and the material whose particle size is larger than the sieve hole diameter will be discharged from the outlet at the lower end of the sieve cylinder along the wall of the cylinder, so as to realize the sieving process. points function. When domestic waste is thrown up and falls to the bottom of the drum screen, the bag breaking knife installed in the front section of the screen drum will penetrate into the plastic bags, clothes and other materials, and then through the extrusion and tearing of other materials, the plastic bags, clothes, etc. The material is scratched, so as to realize the function of breaking bags and clothes. The broken plastic bags, clothes, etc. enter the rear section of the two-stage drum screen with the rotation of the drum screen. A long object hanging device is installed in the circumferential direction of the cylinder wall of the rear section of the drum screen, and a long object collecting device is installed on the central attachment. The broken plastic bags and clothes will be picked up by the long object hanging device during the process of rotating with the drum sieve. After reaching a certain height, they will slide down, fall to the long object collecting device, and be transported out of the drum, thus realizing The function of collecting broken bags and long strips is improved. In order to prevent the sieve holes from being clogged by household garbage with high water content, a sieve hole cleaning device is installed on the outer wall of the sieve cylinder. The hole cleaning device cooperates with the sieve hole. When the sieve hole is transferred to the hole cleaning device, the hole cleaning device will clean the sieve hole, so as to realize the hole cleaning function.

本发明两段式滚筒筛的工作流程如下:首先,城市生活垃圾经给料口2进入达到一定转速的两段式多功能滚筒筛入口段1。进入滚筒筛入口段1的城市生活垃圾跟随滚筒筛一起转动,当生活垃圾转动达到一定高度时,生活垃圾以抛物线的运动轨迹被抛出,落回到筛底,重复这样的过程,使生活垃圾在滚筒内处于不断翻滚的状态。在不断翻滚的过程中,粒径小于筛孔直径的生活垃圾穿过筛孔101,下落到筛下物收集装置7中,被收集运走;粒径大于筛孔101直径的物料则从滚筒筛出口段5排出,从而现实不同径粒的物料的筛分功能。在生活垃圾被抛起下落到滚筒筛底时,滚筒筛入口段1内壁圆周上安装的破袋刀102将扎进塑料袋、织物等物料中,再通过其他物料的挤压、撕扯等作用,将塑料袋、衣物等物料划破,从而实现破袋、破织物的功能。破袋刀102的形状为四棱锥形,其一侧面垂直于破袋刀底面。经破袋后的塑料袋、织物等,随着滚筒筛的转动进入到滚筒筛出口段5。在滚筒筛出口段5内壁圆周方向上安装有长条物挑挂装置501,在滚筒筛出口段5内部还安装有由挂针链502、503、504组成的长条物收集收集装置。挂针链包括动件和定件;动件上安装有若干挂针,定件对动件进行导向,挂针携带长条物沿轴向运动至滚筒筛出口段外。破袋后的塑料袋和织物在随滚筒筛转动的过程中,将被长条物挑挂装置501挑起,达到一定高度后滑落到长条物收集装置上,由于长条物收集装置为具有限定宽度的挂针,因此只有较软的长条类物质挂在长条物收集装置上。挂在长条物收集装置上的塑料被输送到滚筒外,从而实现了长条物的收集输送功能。为了防止破袋刀102在破袋的过程中被塑料类物质缠绕,在滚筒筛内壁安装有用于清理破袋刀的清刀装置103。清刀装置103为装有刮刀的圆盘。清刀装置103上,两把刮刀与一把破袋刀102配合,两把刮刀分别位于一把破袋刀102的两侧,刮刀与破袋刀102的转动方向相反。当破袋刀102转动到清刀装置103刮刀的位置时,破袋刀两侧的刮刀就将缠绕在破袋刀上的塑料类垃圾清理下来,从而实现清刀功能。为了防止筛孔101被含水量较高的生活垃圾堵塞,在筛筒的外壁安装有筛孔清理装置6,清孔装置6与筛孔配合,当筛孔转动到清孔装置6时,清孔装置6对筛孔进行清理,从而现实清孔功能;清孔装置6可以选择毛刷一类清孔装置。The working process of the two-stage trommel screen of the present invention is as follows: firstly, municipal solid waste enters the inlet section 1 of the two-stage multi-functional trommel screen which reaches a certain speed through the feed port 2 . The municipal solid waste entering the entrance section 1 of the trommel screen rotates together with the trommel screen. When the domestic waste reaches a certain height, the domestic waste is thrown out with a parabolic trajectory and falls back to the bottom of the screen. Repeat this process to make the domestic waste It is in a state of continuous tumbling in the drum. In the process of continuous tumbling, domestic garbage with a particle size smaller than the diameter of the sieve hole passes through the sieve hole 101, falls into the undersize collection device 7, and is collected and transported; The outlet section 5 is discharged, so as to realize the screening function of materials with different particle sizes. When domestic garbage is thrown up and falls to the bottom of the drum screen, the bag breaking knife 102 installed on the inner wall circumference of the drum screen inlet section 1 will penetrate into plastic bags, fabrics and other materials, and then squeeze and tear other materials, Cut plastic bags, clothing and other materials, so as to realize the function of breaking bags and fabrics. The shape of the bag breaking knife 102 is a quadrangular pyramid, and one side thereof is perpendicular to the bottom surface of the bag breaking knife. The broken plastic bags, fabrics, etc. enter the trommel outlet section 5 along with the rotation of the trommel. A long object hanging device 501 is installed in the circumferential direction of the inner wall of the trommel outlet section 5 , and a long article collection device composed of hanging pin chains 502 , 503 , and 504 is also installed inside the trommel outlet section 5 . The hanging pin chain includes a moving part and a fixed part; a number of hanging pins are installed on the moving part, and the fixed part guides the moving part. The broken plastic bags and fabrics will be picked up by the long object hanging device 501 in the process of rotating with the drum screen, and will slide down to the long object collecting device after reaching a certain height. Hanging pins of limited width so that only softer slivers are hung on the slivers collector. The plastic hanging on the long strip collecting device is conveyed to the outside of the drum, thereby realizing the collection and conveyance function of long strips. In order to prevent the bag breaking knife 102 from being entangled by plastic substances during the bag breaking process, a knife cleaning device 103 for cleaning the bag breaking knife is installed on the inner wall of the drum screen. The knife cleaning device 103 is a disc equipped with a scraper. On the knife cleaning device 103, two scrapers cooperate with a bag-breaking knife 102, and the two scrapers are respectively located on both sides of a bag-breaking knife 102, and the rotation direction of the scraping knife and the bag-breaking knife 102 is opposite. When the bag breaking knife 102 rotates to the scraper position of the knife cleaning device 103, the scrapers on both sides of the bag breaking knife will clean up the plastic waste wrapped around the bag breaking knife, thereby realizing the knife cleaning function. In order to prevent the sieve holes 101 from being clogged by household garbage with a high water content, a sieve hole cleaning device 6 is installed on the outer wall of the sieve cylinder. The hole cleaning device 6 cooperates with the sieve holes. The device 6 cleans the sieve holes, so as to realize the hole cleaning function; the hole cleaning device 6 can choose a cleaning device such as a hair brush.

Claims (6)

1.一种用于城市生活垃圾的两段式滚筒筛,其特征在于:包括固定机架、安装在固定机架上的滚筒筛和滚筒筛驱动装置(4);1. A two-stage trommel screen for municipal solid waste, characterized in that it includes a fixed frame, a trommel mounted on the fixed frame, and a trommel driving device (4); 滚筒筛包括相互连接的滚筒筛入口段(1)和滚筒筛出口段(5);给料口(2)安装于滚筒筛入口段(1)的入口处,滚筒筛的下方设有筛下物收集装置(7);The trommel screen includes the trommel inlet section (1) and the trommel outlet section (5) which are connected to each other; the feeding port (2) is installed at the entrance of the trommel inlet section (1), and the undersize is provided under the trommel screen collection device (7); 滚筒筛入口段(1)和滚筒筛出口段(5)的圆周方向上布置有若干筛孔(101),滚筒筛入口段(1)圆周内壁安装有若干破袋刀(102),滚筒筛入口段(1)内设有与所述破袋刀(102)相配合的清刀装置(103);A number of screen holes (101) are arranged in the circumferential direction of the trommel inlet section (1) and the trommel outlet section (5). Several bag breaking knives (102) are installed on the inner wall of the trommel inlet section (1). The section (1) is equipped with a knife cleaning device (103) matched with the bag breaking knife (102); 滚筒筛入口段(1)和滚筒筛出口段(5)的外周设有清理筛孔(101)的清孔装置(6);A hole cleaning device (6) for cleaning the screen holes (101) is provided on the outer periphery of the trommel inlet section (1) and the trommel outlet section (5); 滚筒筛出口段(5)圆周内壁安装有若干长条物挑挂装置(501),在滚筒筛出口段(5)内安装有三排挂针链(502、503、504)组成的长条物收集装置。There are a number of hanging devices (501) installed on the inner wall of the drum screen outlet section (5), and three rows of needle chains (502, 503, 504) are installed in the drum screen outlet section (5) to collect the long items. device. 2.根据权利要求1所述的两段式滚筒筛,其特征在于:滚筒筛与水平方向间夹角为3°~8°。2. The two-stage trommel screen according to claim 1, characterized in that: the angle between the trommel screen and the horizontal direction is 3°~8°. 3.根据权利要求1所述的两段式滚筒筛,其特征在于:破袋刀(102)的形状为四棱锥形,其一侧面垂直于破袋刀底面。3. The two-stage drum sieve according to claim 1, characterized in that the shape of the bag breaking knife (102) is a square pyramid, and one side thereof is perpendicular to the bottom surface of the bag breaking knife. 4.根据权利要求1所述的两段式滚筒筛,其特征在于:破袋刀(102)焊接在钢板(105)上,钢板(105)采用嵌入的方式安装在滚筒筛入口段(1)内壁圆周上。4. The two-stage drum screen according to claim 1, characterized in that: the bag breaking knife (102) is welded on the steel plate (105), and the steel plate (105) is installed in the inlet section (1) of the drum screen in an embedded manner on the inner wall circumference. 5.根据权利要求1所述的两段式滚筒筛,其特征在于:清刀装置(103)固定在圆盘上,其转动方向与破袋刀(102)的转动方向相反。5. The two-stage trommel screen according to claim 1, characterized in that the knife cleaning device (103) is fixed on the disc, and its rotation direction is opposite to that of the bag breaking knife (102). 6.根据权利要求1所述的两段式滚筒筛,其特征在于:三排挂针链包括第一挂针链(504)、第二挂针链(503)和第三挂针链(502);第一挂针链(504)、第二挂针链(503)和第三挂针链(502)上均设有若干挂针;第一挂针链(504)和第二挂针链(503)的间距为0.1D,第二挂针链(503)和第三挂针链(502)的间距分别为0.12D;第一挂针链(504)和第二挂针链(503)位于滚筒筛中心一侧,第三挂针链(502)位于滚筒筛中心另一侧;第三挂针链(502)偏离滚筒中心0.07D;挂针长度为0.25D,其中D为滚筒筛直径。6. The two-stage drum screen according to claim 1, characterized in that: the three rows of pin chains include the first pin chain (504), the second pin chain (503) and the third pin chain (502 ); the first hanging pin chain (504), the second hanging pin chain (503) and the third hanging pin chain (502) are equipped with several hanging pins; the first hanging pin chain (504) and the second hanging pin chain The spacing of (503) is 0.1D, the spacing of the second hanging needle chain (503) and the third hanging needle chain (502) is respectively 0.12D; the first hanging needle chain (504) and the second hanging needle chain (503) Located on one side of the drum screen center, the third pin chain (502) is located on the other side of the drum screen center; the third pin chain (502) deviates from the drum center by 0.07D; the pin length is 0.25D, where D is the diameter of the drum screen .
CN201210138663.0A 2012-05-07 2012-05-07 Two-section drum screen for municipal domestic waste Expired - Fee Related CN102671854B (en)

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