CN110756279B - Closed-cycle dust removal device of impact crusher - Google Patents

Closed-cycle dust removal device of impact crusher Download PDF

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Publication number
CN110756279B
CN110756279B CN201911084423.5A CN201911084423A CN110756279B CN 110756279 B CN110756279 B CN 110756279B CN 201911084423 A CN201911084423 A CN 201911084423A CN 110756279 B CN110756279 B CN 110756279B
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China
Prior art keywords
air
impact crusher
pipeline
outlet
powder collector
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CN201911084423.5A
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Chinese (zh)
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CN110756279A (en
Inventor
刘万辉
赵大力
苗志坤
杨聪俐
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Henan Liming Heavy Industry Technology Co Ltd
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Henan Liming Heavy Industry Technology Co Ltd
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/288Ventilating, or influencing air circulation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Abstract

The invention relates to dust removing equipment of a crusher, in particular to a closed-loop circulating dust removing device of an impact crusher, which enables the inside of the impact crusher to form a negative pressure state, and comprises the impact crusher arranged on a base, wherein a feed inlet of the impact crusher is provided with a feed inlet baffle, a discharge outlet of the impact crusher is provided with a discharge hopper, a conveyer belt is arranged below the discharge hopper, an air inlet is arranged above the feed inlet of the impact crusher, one side of the discharge hopper is provided with an air outlet, the air outlet is connected with an air suction pipeline, the outlet of the air suction pipeline is connected with a cyclone powder collector, the air inlet of the cyclone powder collector is hermetically connected with the outlet of the air suction pipeline, the air outlet of the cyclone powder collector is connected with a centrifugal fan, the air outlet of the centrifugal fan is connected with an exhaust pipeline, the other end of the exhaust pipeline is communicated with the air inlet of the impact crusher, and the air supplement pipeline is also connected on the exhaust pipeline, the other end of the air supply pipeline is communicated with an air inlet of the cyclone powder collector; an adjusting air valve is arranged in the air supply pipeline.

Description

Closed-cycle dust removal device of impact crusher
Technical Field
The invention relates to dust removal equipment of a crusher, in particular to a closed-loop circulating dust removal device of an impact crusher, which enables the inside of the impact crusher to form a negative pressure state.
Background
The impact crusher is used as a crusher for crushing materials by using an impact principle, has the characteristics of simple structure, high reliability, wide application range and the like, and is widely applied to industries such as mines, chemical engineering, buildings, railways and the like.
The impact crusher adopts an impact crushing principle, a main part rotor can generate a large airflow effect when rotating at a high speed, lower airflow from top to bottom is generated inside the device, and the generated micro powder is mixed with micro powder in the crushing process and discharged to the external environment through a discharge port, so that the environment and production equipment are polluted. Today, the environmental protection requirement is stricter day by day, the impact crusher who uses on the building stones production line generally can be equipped with dust collector, and this kind of dust collector adopts open structure usually, is absorb by the dust removal pipeline promptly, and the cloth bag pulse dust remover filters the dust removal, discharges the atmosphere again, and this kind of form pipeline arrangement length is big, has increased the air current resistance, and the resistance of cloth bag pulse dust remover is great, and the operation energy consumption is higher.
The following table shows the actual air flow for two typical models:
model type Average wind speed (m/s) Air outlet surface (m)2 Air output (m)3/h)
Model one 12.9 0.14 6500
Model two 11.7 0.18 7600
6500-7600 m3The air volume of per hour needs to consume 10-12kw of fan power, and considering the influence of loss on the dust removal effect, the air volume selection of the traditional dust removal device needs to increase the use coefficient, so that the energy consumption is higher.
How to design a dust removal device by combining an impact crusher under the existing conditions is a key direction of industrial research.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a closed-loop circulating dust removal device for an impact crusher, which makes full use of the lower exhaust flow generated inside the impact crusher to enable the interior of the impact crusher to form a negative pressure state, reduces energy consumption and reduces dust pollution to the environment and equipment.
The technical effects of the invention are realized as follows:
a closed-loop circulating dust removal device of an impact crusher comprises the impact crusher arranged on a base, a feed inlet baffle curtain is arranged at a feed inlet of the impact crusher, a discharge hopper is arranged at a discharge outlet of the impact crusher, a conveying belt is arranged below the discharge hopper, an air inlet is arranged on a machine shell above the feed inlet of the impact crusher, an air outlet is formed in one side of the discharge hopper, the air outlet is connected with an air suction pipeline, an outlet of the air suction pipeline is connected with a cyclone powder collector, an air inlet of the cyclone powder collector is hermetically connected with an outlet of the air suction pipeline, an air outlet of the cyclone powder collector is connected with a centrifugal fan, an air outlet of the centrifugal fan is connected with an exhaust pipeline, the other end of the exhaust pipeline is communicated with an air inlet of the impact crusher, an air supplementing pipeline is further connected to the exhaust pipeline, and the other end of the air supplementing pipeline is communicated with an air inlet of the cyclone powder collector; the bottom of the cyclone powder collector is provided with a discharger, and a powder bin is arranged at a discharge opening of the discharger.
And an adjusting air valve is arranged in the air supply pipeline.
The powder bin is connected with a screw conveyer.
The invention has the positive effects that: the lower-discharge airflow generated by the rotor of the impact crusher is utilized, and two airflow circulating systems are formed by combining the cyclone powder collector and the impact crusher, so that the interior of the impact crusher forms a negative pressure state and is recycled, the resource waste is reduced, and the micro powder generated in the crushing production process can be effectively subjected to dust removal, screening and collection; the problem of the dust removal that the counterattack formula breaker unit used is solved, also can avoid using a large amount of dust removal pipelines simultaneously in the building stones production line, reduced entire system's energy loss. The whole dust removal device can be used for collecting the generated powder in a centralized manner, so that the generated micro powder is prevented from overflowing to the external environment of the equipment, the dust removal effect is ensured, the energy consumption is not increased, and the development theme of green environmental protection is met.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
As shown in figure 1, the closed cycle dust removing device of the impact crusher comprises an impact crusher 1 fixed on a base 14, a feed inlet baffle 2 is hinged with a feed inlet of the impact crusher 1, a discharge outlet of the impact crusher is connected with a discharge hopper 13, a conveyer belt 12 is laid below the discharge hopper 13, an air inlet is reserved on a machine shell above the feed inlet of the impact crusher, one side of the discharge hopper 13 is provided with an air outlet, the air outlet is connected with an air suction pipeline 11, an outlet of the air suction pipeline 11 is connected with a cyclone powder collector 7, an air inlet of the cyclone powder collector 7 is hermetically connected with an outlet of the air suction pipeline 11, an air outlet of the cyclone powder collector 7 is connected with a centrifugal fan 6, an air outlet of the centrifugal fan 6 is connected with an exhaust pipeline 5, the other end of the exhaust pipeline 5 is communicated with the air inlet of the impact crusher, an air supplementing pipeline 3 is also connected on the exhaust pipeline 5, the other end of the air supply pipeline 3 is communicated with an air inlet of the cyclone powder collector 7, and an adjusting air valve 4 is arranged in the air supply pipeline 3; the bottom of the cyclone powder collector 7 is connected with a discharger 8, the discharge opening of the discharger 8 is connected with a powder bin 9, and the powder bin 9 is connected with a screw conveyor 10.
The working principle is as follows: when the impact crusher works, a material to be crushed enters the impact crusher from the feeding port through the feeding port stop curtain, the impact frame is driven by the rotor part to crush, finished sand and stone flow out of the discharging port to enter the discharging hopper, and finally the finished sand and stone are conveyed and output through the conveying belt.
Starting a centrifugal fan before the impact crusher works to enable the interior of the dust removal device to form a negative pressure state, wherein micro powder generated when the impact crusher works enters a discharge hopper from the interior of the impact crusher along with air flow in a circulating system and enters an air suction pipeline from an air outlet of the discharge hopper; the powder enters a cyclone powder collector through an air suction pipeline for treatment, and the powder is collected; the airflow after discharging the powder enters an exhaust pipeline under the action of a centrifugal fan, the airflow entering the exhaust pipeline is finally divided into two directions, one of the two directions flows into a large circulation system of a reaction crusher, a discharge hopper and the like and carries away newly generated powder again, and the other airflow enters a cyclone powder collector again through an air supply pipeline to form a small circulation system; the regulating air valve in the air supply pipeline can control the air quantity entering the small circulation, and the air flow can only run around a single circulation direction.
The cyclone powder collector can filter out 80% of powder in the airflow, and the powder is discharged to the powder bin through the discharger and collected, conveyed by the screw conveyor and treated in a centralized manner.
The whole closed-loop circulation dust removal device is built on the characteristic of one-way airflow of the impact crusher, the lower exhaust airflow generated by the rotor is recycled, the dust removal effect is ensured, the energy consumption is not increased, and the centrifugal fan mainly plays a role in assisting airflow circulation.

Claims (3)

1. The utility model provides a counterattack formula breaker closed cycle dust collector, is including setting up the counterattack formula breaker on the base, and the pan feeding mouth of counterattack formula breaker is provided with pan feeding mouth check curtain, and the discharge gate of counterattack formula breaker is provided with out the hopper, and the below that goes out the hopper is provided with conveyer belt, its characterized in that: an air inlet is arranged on the machine shell above the feeding port of the impact crusher, an air outlet is arranged on one side of the discharging hopper, the air outlet is connected with an air suction pipeline, an outlet of the air suction pipeline is connected with a cyclone powder collector, an air inlet of the cyclone powder collector is hermetically connected with an outlet of the air suction pipeline, an air outlet of the cyclone powder collector is connected with a centrifugal fan, an air outlet of the centrifugal fan is connected with an exhaust pipeline, the other end of the exhaust pipeline is communicated with the air inlet of the impact crusher, an air supplementing pipeline is also connected to the exhaust pipeline, and the other end of the air supplementing pipeline is communicated with the air inlet of the cyclone powder collector; the bottom of the cyclone powder collector is provided with a discharger, and a powder bin is arranged at a discharge opening of the discharger.
2. The closed-cycle dust collector of the impact crusher of claim 1, wherein: and an adjusting air valve is arranged in the air supply pipeline.
3. The closed-cycle dust collector of the impact crusher of claim 1, wherein: the powder bin is connected with a screw conveyer.
CN201911084423.5A 2019-11-07 2019-11-07 Closed-cycle dust removal device of impact crusher Active CN110756279B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911084423.5A CN110756279B (en) 2019-11-07 2019-11-07 Closed-cycle dust removal device of impact crusher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911084423.5A CN110756279B (en) 2019-11-07 2019-11-07 Closed-cycle dust removal device of impact crusher

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CN110756279A CN110756279A (en) 2020-02-07
CN110756279B true CN110756279B (en) 2021-08-31

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002301A (en) * 1975-11-06 1977-01-11 Baker Oil Tools, Inc. Vented hammermill crusher
CN200951402Y (en) * 2006-08-28 2007-09-26 谢汉国 Integrated, concentric double impeller, air return and dust-free crusher
JP2010036071A (en) * 2008-08-01 2010-02-18 Nakayama Iron Works Ltd Impact type crusher
CN202290181U (en) * 2011-09-13 2012-07-04 简阳市富强机械制造有限公司 Dust-free gear-claw disintegrator
CN202290186U (en) * 2011-09-13 2012-07-04 简阳市富强机械制造有限公司 Dust-free hammer mill
CN203494565U (en) * 2013-09-26 2014-03-26 四川皇龙智能破碎技术股份有限公司 Crushing appliance capable of circularly removing dust through wind pressure
CN105149045A (en) * 2015-10-16 2015-12-16 王毅 Circulating impact flour milling machine unit and circulating impact flour milling method by using circulating impact flour milling machine
CN205833257U (en) * 2016-07-29 2016-12-28 南安工鑫机械有限公司 A kind of environment-friendly type lithotrite
CN107029830A (en) * 2017-05-22 2017-08-11 陕西科技大学 A kind of beater disintegrating machine
CN207680699U (en) * 2017-10-20 2018-08-03 上海远通实业有限公司 A kind of impact breaker
CN109046709A (en) * 2018-07-18 2018-12-21 张琴 A kind of broken fine grinding device of material
CN208771492U (en) * 2018-08-16 2019-04-23 清镇市科炬耐火材料有限公司 A kind of jaw crusher of recyclable dust
CN208786542U (en) * 2018-07-07 2019-04-26 浙江海澄德畅机械有限公司 It is a kind of for crushing the adjustable speed dust suction grinding device of coal mine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002301A (en) * 1975-11-06 1977-01-11 Baker Oil Tools, Inc. Vented hammermill crusher
CN200951402Y (en) * 2006-08-28 2007-09-26 谢汉国 Integrated, concentric double impeller, air return and dust-free crusher
JP2010036071A (en) * 2008-08-01 2010-02-18 Nakayama Iron Works Ltd Impact type crusher
CN202290181U (en) * 2011-09-13 2012-07-04 简阳市富强机械制造有限公司 Dust-free gear-claw disintegrator
CN202290186U (en) * 2011-09-13 2012-07-04 简阳市富强机械制造有限公司 Dust-free hammer mill
CN203494565U (en) * 2013-09-26 2014-03-26 四川皇龙智能破碎技术股份有限公司 Crushing appliance capable of circularly removing dust through wind pressure
CN105149045A (en) * 2015-10-16 2015-12-16 王毅 Circulating impact flour milling machine unit and circulating impact flour milling method by using circulating impact flour milling machine
CN205833257U (en) * 2016-07-29 2016-12-28 南安工鑫机械有限公司 A kind of environment-friendly type lithotrite
CN107029830A (en) * 2017-05-22 2017-08-11 陕西科技大学 A kind of beater disintegrating machine
CN207680699U (en) * 2017-10-20 2018-08-03 上海远通实业有限公司 A kind of impact breaker
CN208786542U (en) * 2018-07-07 2019-04-26 浙江海澄德畅机械有限公司 It is a kind of for crushing the adjustable speed dust suction grinding device of coal mine
CN109046709A (en) * 2018-07-18 2018-12-21 张琴 A kind of broken fine grinding device of material
CN208771492U (en) * 2018-08-16 2019-04-23 清镇市科炬耐火材料有限公司 A kind of jaw crusher of recyclable dust

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