CN112934371A - Low-energy-consumption dust removal type impact crusher - Google Patents
Low-energy-consumption dust removal type impact crusher Download PDFInfo
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- CN112934371A CN112934371A CN202110349165.XA CN202110349165A CN112934371A CN 112934371 A CN112934371 A CN 112934371A CN 202110349165 A CN202110349165 A CN 202110349165A CN 112934371 A CN112934371 A CN 112934371A
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- feeding port
- rotor
- impact crusher
- air
- baffle
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- 239000000428 dust Substances 0.000 title claims abstract description 53
- 238000005265 energy consumption Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
- B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
- B02C13/09—Disintegrating 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/288—Ventilating, or influencing air circulation
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention relates to the field of mine crushing equipment, in particular to a low-energy-consumption dust removal type impact crusher, wherein a discharge port is arranged below a rotor, a sealing cover is arranged at the discharge port, a conveying belt is arranged below the sealing cover, the sealing cover is hermetically connected with the discharge port and the conveying belt, a feeding port is provided with a feeding port slide carriage, a feeding port baffle is arranged in a machine body below the feeding port slide carriage and is positioned below an extension line of the feeding port slide carriage, the feeding port baffle is close to the rotor and has a gap with the rotor, an air inlet is arranged on the machine body below the feeding port baffle, the outer side of the air inlet is connected with a cyclone powder collector through an air inlet pipe, an air outlet is arranged on the machine body above the air inlet, the air outlet is positioned between the feeding port slide carriage and the feeding port baffle, the outer side of the air outlet is connected with a first, the air outlet pipe is connected with a pulse dust collector through a dust removal pipeline, and the pulse dust collector is connected with a second centrifugal fan.
Description
Technical Field
The invention relates to the field of mine crushing equipment, in particular to a low-energy-consumption dust removal type impact crusher which utilizes internal airflow self-circulation, reduces exhaust air volume and reduces operation energy consumption.
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, good product grain shape, wide application range and the like, and is widely applied to industries such as mines, chemical engineering, buildings, railways and the like.
When the rotor of the impact crusher runs at a high speed, materials are continuously impacted and crushed, and a large amount of micro powder with the diameter less than 0.075mm can be generated. At the same time, the high speed operation of the rotor also produces a fan effect, causing a large gas flow inside the crusher. In order to improve the crushing efficiency and avoid the phenomenon that materials directly fall from a feeding port without participating in collision, a feeding port baffle of a common impact crusher can be set to keep a small gap with a rotor, so that air flow generated when the rotor rotates is cut off, air entering from the feeding port cannot form internal closed circulation, most of air flow can only be discharged from a discharging port, a large amount of micro powder is carried to cause dust raising, and the environment is polluted.
In order to reduce the influence on the environment, the existing impact crusher is generally provided with a dust removal device. Because the air volume of breaker exhaust is great, need be equipped with big air volume dust collector, lead to the input cost to increase, also increased the consumption of dust removal power. For example, a 200kw impact crusher can produce approximately 10000 cubic meters of dust-laden gas per hour, requiring 10-15kw of dust removal power.
The increase of investment and operation cost reduces the market competitiveness of the product. How to reduce the cost and the operation power consumption of the dust removing device of the impact crusher is the key direction of industrial research.
The patent CN85203245U discloses a structure of dust type impact crusher, and this patent has adopted inside to get wind, and the pipe is embraced outward to the back or the outside tuber pipe mode such as return air of embracing of side to balanced inside wind pressure reduces the volume of airing exhaust. Two kinds of outer tuber pipes of embracing all need be from pan feeding mouth eminence return air, lead to the return air passageway to prolong by a wide margin to there is the elbow that is greater than 90, greatly increased the return air resistance, reduced balanced effect, it is limited to the improvement of pressure of airing exhaust and volume of airing exhaust, and do not put forward concrete dust removal scheme.
The invention patent application with the application number of 2019110844235 discloses a structure of a closed-loop dust removal device of an impact crusher, and adopts a circulation mode of taking air from the rear part of a sealing cover at the bottom of the impact crusher and returning air from the top of a feeding port, the direction of the air flow generated by the rotation of a rotor is opposite to the movement direction of the air flow, the pressure in the sealing cover can be reduced by providing the air volume larger than the exhaust air volume, the sealing difficulty is increased, and the dust removal power consumption is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the low-energy-consumption dust removal type impact crusher which utilizes the self-circulation of internal airflow, reduces the exhaust air volume and reduces the operation energy consumption.
The technical scheme of the invention is realized as follows:
a low-energy-consumption dust-removing impact crusher comprises an impact crusher arranged on a base, a rotor is arranged in the impact crusher, a discharge hole is arranged below the rotor, the discharge port is provided with a sealing cover, a conveyer belt is arranged below the sealing cover, the sealing cover is hermetically connected with the discharge port and the conveyer belt, the top of the feeding port of the impact crusher is provided with a feeding port baffle, the bottom of the feeding port of the impact crusher is provided with a feeding port slide carriage which is obliquely arranged, a feeding port baffle is arranged in the machine body below the feeding port slide carriage, the feeding port baffle is positioned below the extension line of the feeding port slide carriage, the feeding port baffle is close to the rotor and has a gap with the rotor, a gap is formed between the feeding port baffle and the inner wall of the machine body and is larger than a gap between the feeding port baffle and the rotor; an air inlet is formed in the machine body below the feeding port baffle, an air inlet pipe is connected to the outer side of the air inlet, a cyclone powder collector is connected to the other end of the air inlet pipe, a powder bin is arranged at the bottom of the cyclone powder collector, and an air outlet pipe is arranged at the top of the cyclone powder collector; the organism of air intake top on be provided with the air outlet, the air outlet is located between pan feeding mouth carriage apron and the pan feeding mouth baffle and the slope upwards sets up, the outside of air outlet is connected with the muffler, the other end of muffler is connected with first centrifugal fan, the play tuber pipe of whirlwind collection powder ware is connected to first centrifugal fan's entry end, play tuber pipe on the intercommunication have a dust removal pipeline, the other end of dust removal pipeline is connected with the pulse dust remover, the exit of pulse dust remover is provided with second centrifugal fan.
The air inlet and the air outlet are respectively positioned on the tangent extension lines when the rotor operates, and the gap between the feeding port baffle and the inner wall of the machine body, the air inlet and the air outlet form a self-circulation air duct together in the crushing cavity.
The gap between the feeding port baffle and the rotor is 10-30 mm.
The invention has the positive effects that: the self-circulation air duct is arranged on the front side of the material inlet baffle below the material inlet of the impact crusher and has the function that air flow generated when the rotor rotates can return to the inside of the crushing cavity through the self-circulation air duct, so that the air flow in the crushing cavity forms self-circulation and continuously and circularly operates under the driving of the rotor, micro powder in the crushing cavity is driven to carry out self-circulation by the air flow generated by the rotor of the impact crusher, and partial dust removal is carried out by connecting and matching with the cyclone powder collector, so that the dust removal air volume is greatly reduced, the dust removal power and the operation energy consumption are correspondingly reduced, and the negative pressure state is always kept in the impact crusher by connecting the pulse dust collector and the second centrifugal fan; the opening directions of the air inlet and the air outlet are both arranged on the extension line of the tangent line of the rotor in the circulating operation, so that the circulating operation of the air flow is facilitated, and the resistance of the air flow in the operation process is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view I of the inner airflow circulation state of the crusher.
Fig. 3 is a schematic view showing the circulation state of the airflow inside the crusher according to the present invention.
Detailed Description
As shown in fig. 1 to 3, a low-energy-consumption dust-removal impact crusher comprises an impact crusher 1 arranged on a base 3, wherein a rotor 2 is arranged inside the impact crusher 1, a discharge port 6 is arranged below the rotor 2, a sealing cover 5 is arranged at the discharge port 6, a conveyer belt 4 is connected below the sealing cover 5, and the sealing cover 5 is hermetically connected with the discharge port 6 and the conveyer belt 4; the top of a feeding port of the impact crusher 1 is connected with a feeding port baffle 19, the bottom of the feeding port of the impact crusher 1 is fixedly connected with a feeding port slide carriage 20, the feeding port slide carriage 20 is obliquely arranged, a feeding port baffle 18 is fixedly connected in the machine body below the feeding port slide carriage 20, the feeding port baffle 18 is positioned below the extension line of the feeding port slide carriage 20, the feeding port baffle 18 is close to the rotor 2 and has a gap with the rotor 2, the gap between the feeding port baffle 18 and the rotor 2 is 10-30mm, a gap is formed between the feeding port baffle 18 and the inner wall of the machine body, and the gap is larger than the gap between the feeding port baffle 18 and the rotor 2; an air inlet 7 is arranged on the machine body below the feeding port baffle 18, an air inlet pipe 15 is connected to the outer side of the air inlet 7, the other end of the air inlet pipe 15 is connected with a cyclone powder collector 9, the bottom of the cyclone powder collector 9 is connected with a powder bin 8, and the top of the cyclone powder collector 9 is connected with an air outlet pipe 14; an air outlet 21 is arranged on the machine body above the air inlet 7, the air outlet 21 is located between the feeding port slide carriage 20 and the feeding port baffle 18 and is obliquely and upwards arranged, an air return pipe 16 is connected to the outer side of the air outlet 21, the other end of the air return pipe 16 is connected with a first centrifugal fan 13, an inlet end of the first centrifugal fan 13 is connected with an air outlet pipe 14 of the cyclone powder collector, a dust removal pipeline 12 is communicated with the air outlet pipe 14, the other end of the dust removal pipeline 12 is connected with a pulse dust collector 10, and an outlet of the pulse dust collector 10 is connected with a second centrifugal fan 11.
The air inlet 7 and the air outlet 21 are respectively positioned on the tangent extension line when the rotor 2 operates, and the gap between the material inlet baffle 18 and the inner wall of the machine body, the air inlet 7 and the air outlet 21 form a self-circulation air duct 17 together in the crushing cavity.
The invention is internally sealed into a whole under the action of the impact crusher 1, the feed inlet baffle 19, the sealing cover 5, the conveying belt 4, the cyclone powder collector 9 and the first centrifugal fan 13. Before the impact crusher 1 works, a first centrifugal fan 13 and a second centrifugal fan 11 are started to enable the cyclone powder collector 9 and the pulse dust collector 10 to be in a negative pressure state, when the rotor 2 works and operates, generated working airflow is driven by the rotor 2 to carry generated micro powder to flow towards the discharge port 6, because the air pressure inside the sealing cover 5 is stable and closed, and the self-circulation air duct is in an open state under the action of the air inlet 7 and the air outlet 21, when the airflow operates at the discharge port 6, the airflow can flow towards the air inlet 7 under the drive of the rotor 2, most of the airflow can flow towards the air outlet 21 along the air duct and finally returns to the feed port through the air outlet 21 to form internal airflow self-circulation, and the other part of the airflow containing powder can be shunted by the air inlet pipe 15 and enters the cyclone powder collector 9 to carry out dust removal treatment, and the airflow after dust removal enters the air outlet pipe 14 of the cyclone powder collector, and returns to the air outlet 21 through the air return pipe 16 under the action of the first centrifugal fan 13, joins with the powder-containing air flow in the self-circulation air duct, and finally enters into the crushing cavity of the impact crusher through the air outlet 21 to form internal air flow self-circulation and finish dust removal treatment.
Because the impact crusher continuously generates working airflow during working, in order to keep the interior of the impact crusher in a negative pressure state all the time, the pulse dust collector is connected with the exterior of the cyclone powder collector to further remove dust of part of the airflow passing through the cyclone powder collector, and the airflow subjected to dust removal treatment is discharged to the outside through the second centrifugal fan 11, so that the air pressure in the system is reduced, the interior of the impact crusher is kept in a negative pressure circulating airflow state all the time, and the situation that the inner micro powder is discharged outside and pollutes the environment is prevented.
As shown in figure 2, the self-circulation air flow internal self-circulation is carried out through the self-circulation air duct when the dust removal device is not used, the air return distance is almost 0, the air return efficiency is greatly improved, the air pressure at the discharge port is reduced, and the total air discharge quantity of the impact crusher is ensured to be close to 0.
As shown in figures 1 and 3, the basis of the invention is a reaction crusher with a self-circulation air duct, and a cyclone powder collector, a pulse dust collector and corresponding pipelines are additionally arranged on the basis of the self-circulation air duct to form the low-energy-consumption dust-removal type reaction crusher. The air current that the rotor produced is reposition of redundant personnel in air intake department to lead to whirlwind powder collector and remove dust through the intake pipe, and pulse dust collector only removes dust to some in the air current through whirlwind powder collector again and handles, therefore whirlwind powder collector and pulse dust collector only need very little power just can accomplish the dust removal processing, greatly reduced the dust removal energy consumption, simultaneously because the air current in the intake pipe is some in the working air current that the rotor produced, consequently first centrifugal fan only needs very little power to assist, make the air current after the dust removal flow from whirlwind powder collector to the muffler.
Claims (3)
1. The utility model provides a low energy consumption dust type impact crusher, is provided with the rotor including setting up the impact crusher on the base, the inside of impact crusher, and the rotor below is provided with discharge gate, its characterized in that: the discharging port is provided with a sealing cover, a conveying belt is arranged below the sealing cover, the sealing cover is hermetically connected with the discharging port and the conveying belt, a feeding port baffle is arranged at the top of a feeding port of the impact crusher, a feeding port slide carriage is arranged at the bottom of the feeding port of the impact crusher and is obliquely arranged, a feeding port baffle is arranged in the machine body below the feeding port slide carriage and is positioned below the extension line of the feeding port slide carriage, the feeding port baffle is close to the rotor and has a gap with the rotor, and a gap is formed between the feeding port baffle and the inner wall of the machine body and is larger than the gap between the feeding port baffle and the rotor; an air inlet is formed in the machine body below the feeding port baffle, an air inlet pipe is connected to the outer side of the air inlet, a cyclone powder collector is connected to the other end of the air inlet pipe, a powder bin is arranged at the bottom of the cyclone powder collector, and an air outlet pipe is arranged at the top of the cyclone powder collector; the organism of air intake top on be provided with the air outlet, the air outlet is located between pan feeding mouth carriage apron and the pan feeding mouth baffle and the slope upwards sets up, the outside of air outlet is connected with the muffler, the other end of muffler is connected with first centrifugal fan, the play tuber pipe of whirlwind collection powder ware is connected to first centrifugal fan's entry end, play tuber pipe on the intercommunication have a dust removal pipeline, the other end of dust removal pipeline is connected with the pulse dust remover, the exit of pulse dust remover is provided with second centrifugal fan.
2. The energy consumption dust removal type impact crusher of claim 1, wherein: the air inlet and the air outlet are respectively positioned on the tangent extension lines when the rotor operates, and the gap between the feeding port baffle and the inner wall of the machine body, the air inlet and the air outlet form a self-circulation air duct together in the crushing cavity.
3. The energy consumption dust removal type impact crusher of claim 1, wherein: the gap between the feeding port baffle and the rotor is 10-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349165.XA CN112934371B (en) | 2021-03-31 | 2021-03-31 | Low energy consumption dust type impact crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349165.XA CN112934371B (en) | 2021-03-31 | 2021-03-31 | Low energy consumption dust type impact crusher |
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| CN112934371A true CN112934371A (en) | 2021-06-11 |
| CN112934371B CN112934371B (en) | 2024-05-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648253B1 (en) * | 1998-08-07 | 2003-11-18 | Metso Lindemann Gmbh | Method for operating the air circuit and conveying stock flow in the casing of a hammer mill |
| CN107694135A (en) * | 2017-11-13 | 2018-02-16 | 昆明特康科技有限公司 | A kind of grinding machine and its application method for high humidity high viscosity dry materials powder |
| CN108273604A (en) * | 2018-03-02 | 2018-07-13 | 绵阳金泰机械设备制造有限公司 | A kind of reversible hammer crusher improved structure |
| CN110756279A (en) * | 2019-11-07 | 2020-02-07 | 河南黎明重工科技股份有限公司 | Closed-cycle dust removal device of impact crusher |
| CN216459157U (en) * | 2021-03-31 | 2022-05-10 | 河南黎明重工科技股份有限公司 | Low-energy-consumption dust removal type impact crusher |
-
2021
- 2021-03-31 CN CN202110349165.XA patent/CN112934371B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648253B1 (en) * | 1998-08-07 | 2003-11-18 | Metso Lindemann Gmbh | Method for operating the air circuit and conveying stock flow in the casing of a hammer mill |
| CN107694135A (en) * | 2017-11-13 | 2018-02-16 | 昆明特康科技有限公司 | A kind of grinding machine and its application method for high humidity high viscosity dry materials powder |
| CN108273604A (en) * | 2018-03-02 | 2018-07-13 | 绵阳金泰机械设备制造有限公司 | A kind of reversible hammer crusher improved structure |
| CN110756279A (en) * | 2019-11-07 | 2020-02-07 | 河南黎明重工科技股份有限公司 | Closed-cycle dust removal device of impact crusher |
| CN216459157U (en) * | 2021-03-31 | 2022-05-10 | 河南黎明重工科技股份有限公司 | Low-energy-consumption dust removal type impact crusher |
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| Publication number | Publication date |
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| CN112934371B (en) | 2024-05-14 |
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