CN112934370A - Internal airflow self-circulation type impact crusher - Google Patents
Internal airflow self-circulation type impact crusher Download PDFInfo
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- CN112934370A CN112934370A CN202110349163.0A CN202110349163A CN112934370A CN 112934370 A CN112934370 A CN 112934370A CN 202110349163 A CN202110349163 A CN 202110349163A CN 112934370 A CN112934370 A CN 112934370A
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- front side
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- frame
- side plate
- impact crusher
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- 239000000463 material Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000428 dust Substances 0.000 abstract description 11
- 239000000843 powder Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- B02C13/095—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 with an adjustable anvil or impact plate
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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
- B02C13/26—Details
- B02C13/286—Feeding or discharge
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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
- B02C13/26—Details
- B02C13/288—Ventilating, or influencing air circulation
-
- 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
- B02C13/286—Feeding or discharge
- B02C2013/28618—Feeding means
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
本发明涉及矿山破碎设备领域，具体涉及一种内部气流自循环型反击式破碎机，机架入料口下方设有入料口溜板，入料口溜板的下方设有前侧板，前侧板与机架固定连接，前侧板呈折弯状，前侧板和转子之间的机架上设有入料口挡板，入料口挡板与转子之间有缝隙，入料口挡板与前侧板及固定前侧板的机架之间形成风道，入料口挡板的末端与前侧板末端之间的空隙为进风口，入料口挡板的顶端与前侧板顶端之间的空隙为出风口，通过风道使转子运转时产生的气流以最短的距离和最小的阻力进行内部自循环，在回风距离上几乎为0，提高了回风效率，降低了出料口处的风压，确保反击式破碎机内部的总排风量接近于零，减少了排风量，降低了除尘功率。
The invention relates to the field of mine crushing equipment, in particular to an internal airflow self-circulation type impact crusher. A feed slot slide plate is arranged below the feed inlet of the frame, and a front side plate is arranged below the feed slot slide plate. The side plate is fixedly connected with the frame, the front side plate is in a bent shape, the frame between the front side plate and the rotor is provided with a feed inlet baffle, there is a gap between the feed inlet baffle and the rotor, and the feed inlet An air duct is formed between the baffle and the front side plate and the frame on which the front side plate is fixed. The gap between the end of the inlet baffle and the end of the front side plate is the air inlet. The top of the inlet baffle and the front side The gap between the tops of the plates is the air outlet, and the air flow generated by the rotor running through the air duct is internally self-circulated with the shortest distance and the smallest resistance, and the return air distance is almost 0, which improves the return air efficiency and reduces the The air pressure at the discharge port ensures that the total exhaust air volume inside the impact crusher is close to zero, which reduces the exhaust air volume and reduces the dust removal power.
Description
Technical Field
The invention relates to the field of mine crushing equipment, in particular to an internal airflow self-circulation impact crusher.
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 can be generated. At the same time, the high speed of the rotor also produces a fan effect, which causes a large gas flow inside the crusher, for example a 200kw impact crusher can produce 10000 cubic meters of dust-laden gas per hour.
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 the feeding port cannot form internal closed circulation, most of air flow can be discharged from a discharging port, positive pressure is generated locally, sealing is difficult, and a large amount of micro powder is carried to cause dust raising. In order to reduce the influence on the environment, the impact crusher is generally provided with a dust removal device, and the large-air-volume dust removal device is required to be arranged due to too large air volume exhausted, so that the input cost is increased, and the consumption of dust removal power is increased.
Despite the above disadvantages, the impact crusher has no alternative advantages in finished grain shape compared with other types of crushers, and therefore, how to reduce the dust discharge amount and dust removal power consumption of the impact crusher is a 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.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the internal airflow self-circulation type impact crusher, which reduces the circulating air pressure and the air exhaust amount and reduces the dust removal power consumption.
The technical scheme of the invention is realized as follows:
an internal airflow self-circulation type impact crusher comprises an impact crusher arranged on a base, wherein the impact crusher comprises a frame, the top of the inner side of the frame is connected with an impact frame through an impact frame adjusting device, the impact frame adjusting device penetrates through the top of the frame, the impact frame is hinged with a corresponding impact frame adjusting device, a rotor is arranged at the lower part of the inner side of the frame, a discharge port is arranged below the rotor, a feed port baffle curtain is arranged at the feed port of the frame, a feed port slide carriage is arranged below the feed port of the frame, the feed port slide carriage is obliquely and downwards arranged, a sealing cover is arranged at the discharge port, a conveying belt is arranged below the sealing cover, and the sealing cover is hermetically connected with the discharge port and the conveying belt; the utility model discloses a pan feeding mouth apron, including pan feeding mouth apron, front side board and frame fixed connection, the front side board be the form of bending, front side board and rotor between the frame on be provided with pan feeding mouth baffle, there is the gap between pan feeding mouth baffle and the rotor, form the wind channel between pan feeding mouth baffle and front side board and the frame of fixed front side board, the space between the end of pan feeding mouth baffle and the front side board end is the air intake, the space between the top of pan feeding mouth baffle and the front side board top is the air outlet.
And a height difference a is formed between the top of the feeding port baffle and the inclined surface of the feeding port slide carriage.
And a feeding port slide carriage is provided with a feeding port slide carriage lining plate.
The inner side of the front side plate is provided with a front side plate lining plate.
And a feeding port baffle lining plate is arranged on one side of the feeding port baffle, which is close to the rotor.
The feeding port slide carriage lining plate, the front side plate lining plate and the feeding port baffle lining plate are all made of wear-resistant parts and are consistent in thickness.
The top cladding of pan feeding mouth baffle welt the top of pan feeding mouth baffle, the top slope of pan feeding mouth baffle welt sets up and inclination is unanimous with the inclination of pan feeding mouth carriage apron.
The front side plate in the bent shape comprises an upper inclined part connected with the feeding port slide carriage, a vertical part connected with the tail end of the upper inclined part, and a lower inclined part connected with the tail end of the vertical part.
The invention has the positive effects that: the invention sets an internal air duct according to the structure of the impact crusher, and an air inlet is arranged below a material inlet baffle of the impact crusher, and an air outlet is arranged between a material inlet slide carriage and the material inlet baffle, so that the air flow generated when a rotor operates is internally self-circulated in the shortest distance and the smallest resistance through the air duct, the air return distance is almost 0, the air return efficiency is improved, the air pressure at a material outlet is reduced, the total air exhaust volume in the impact crusher is ensured to be close to zero, the air exhaust volume is reduced, and the dust removal power is reduced.
The air duct of the invention is a part of the body of the impact crusher and respectively consists of a frame, a front side plate and a feeding port baffle. The air duct is arranged below the front feeding port of the rotor and is completely positioned on a tangent line of circular running of air flow, the turning angle of the air flow is less than 30 degrees, the air flow is hardly carried, any resistance is hardly generated, and 90-180-degree elbows exist in a comparison document CN85203245U, so that the return air resistance is greatly increased, and the balance effect is reduced.
The invention can complete the self circulation of the internal air flow without adopting external equipment and pipelines, and the arrangement of the internal air channels is formed according to the structure of the impact crusher, so the invention has more integral uniformity and does not increase the space occupied by the impact crusher.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic structural view of the air duct of the present invention.
Fig. 3 is a schematic view of the internal airflow self-circulation when the present invention is in operation.
Fig. 4 is a diagram illustrating a conventional anti-knock breakdown operation.
Fig. 5 is a schematic diagram of the operation of one embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 3, an internal airflow self-circulation type impact crusher comprises an impact crusher 1 mounted on a base 18, wherein the impact crusher 1 comprises a frame 2, the top of the inner side of the frame 2 is connected with an impact frame 3 through an impact frame adjusting device 4, the impact frame adjusting device 4 penetrates through the top of the frame 2, the impact frame 3 is hinged with the corresponding impact frame adjusting device 4, a rotor 5 is mounted at the lower part of the inner side of the frame 1, a discharge port 6 is reserved below the rotor 5, a sealing cover 19 is connected at the discharge port 6, a conveying belt 20 is arranged below the sealing cover 19, and the sealing cover 19 is hermetically connected with the discharge port 6 and the conveying belt 20; a feeding port baffle 17 is connected at a feeding port of the frame, a feeding port slide carriage 14 is fixedly connected below the feeding port of the frame, the feeding port slide carriage 14 is arranged obliquely downwards, a feeding port slide carriage lining plate 15 is fixed on the feeding port slide carriage 14, the feeding port slide carriage lining plate 15 is made of a wear-resistant part, a front side plate 8 is connected below the feeding port slide carriage 14, the front side plate 8 is fixedly connected with the frame 2, the front side plate 8 is bent, preferably, the bent front side plate 8 comprises an upper inclined part connected with the feeding port slide carriage, a vertical part connected with the tail end of the upper inclined part and a lower inclined part connected with the tail end of the vertical part, a front side plate lining plate 9 is fixed at the inner side of the front side plate 8, the front side plate lining plate 9 is made of a wear-resistant part, a feeding port baffle 11 is fixed on the frame between the front side plate 8 and the rotor 5, a gap is arranged between the feeding port baffle 11 and the rotor 5, and an air duct 10 is formed between the feeding port baffle 11, the space between the tail end of the feeding port baffle 11 and the tail end of the front side plate 8 is an air inlet 7, and the space between the top end of the feeding port baffle 11 and the top end of the front side plate 8 is an air outlet 13. Preferably, a feeding port baffle lining plate 12 is fixed on one side, close to the rotor 5, of the feeding port baffle 11, and the feeding port baffle lining plate 12 is made of a wear-resistant part. The top of the feeding port baffle lining plate 12 is coated on the top of the feeding port baffle 11, the top of the feeding port baffle lining plate 12 is obliquely arranged, and the inclination angle of the feeding port baffle lining plate is consistent with that of the feeding port slide carriage lining plate 15. The thickness of the feeding port slide carriage lining plate 15, the thickness of the front side plate lining plate 9 and the thickness of the feeding port baffle lining plate 12 are consistent, if the thickness of the lining plates is different, the abrasion speed is possibly inconsistent, and a part of the lining plates need to be replaced in advance. Preferably, a height difference a is formed between the top of the feeding port baffle 11 and the inclined surface of the feeding port slide carriage 14, and the height difference a is set according to the following principle: the materials moving at different speeds fall from the feeding port slide carriage, the height of the parabola contacting with the feeding port baffle is a, and the materials can enter the air outlet when the height is less than a.
The invention is internally sealed into a whole under the action of the impact crusher, the feed inlet baffle curtain, the sealing cover and the conveyer belt, when the rotor works and operates, the generated working airflow flows to the discharge outlet under the driving of the rotor, because the internal air pressure of the sealing cover is stable and sealed, and the air duct is in an open state under the action of the air inlet and the air outlet, when the airflow operates to the discharge outlet, the airflow flows to the air inlet under the driving of the rotor, flows to the air outlet along the air duct and finally returns to the feed inlet through the air outlet to form internal airflow self circulation, so that the fan effect generated by the rotor continuously circulates and operates in the crushing cavity to gradually form stable working airflow.
When the impact crusher works, the materials to be crushed enter the crushing cavity of the impact crusher through the feeding port check curtain, the impact frame is driven by the rotor to crush the materials, and the finished materials flow out of the discharging port to enter the sealing cover and are finally collected and conveyed through the conveying belt. Meanwhile, the crushing cavity of the impact crusher is in a completely closed state, so that the generated micro powder can be driven by internal circulating airflow to perform internal circulating operation, the micro powder is prevented from being placed outside the cavity of the impact crusher to cause dust pollution, the impact crusher finishes working, and when the inner part is operated without the internal circulating airflow, the micro powder falls into the sealing cover under the influence of gravity and is finally collected and conveyed by the conveying belt and is processed in a centralized manner, so that the micro powder generated by the impact crusher becomes a micro powder raw material which can be recycled.
As shown in fig. 5, the structural principle of an embodiment of the present invention is that the material to be crushed enters the impact crusher through the material inlet curtain 17, and when the material passes through the air outlet 13, the material with smaller particle size directly falls into the air duct from the air outlet 13, which affects the crushing efficiency of the product. Therefore, at the air outlet, the position of the top plane of the feeding port baffle lining plate 12 is lower than the position of the feeding port slide carriage lining plate 15, a certain fall a is formed, materials are in horizontal throwing transition at the air outlet 13, the materials smoothly fall on the feeding port baffle lining plate 12 through the air outlet 13 and finally enter the rotating range of the rotor to be impacted and crushed, and meanwhile, the resistance of the materials to circulating air flow is also reduced.
Comparing fig. 4 and 3 air current operating conditions and deriving, the inside air current theory of operation of traditional impact crusher is as shown in fig. 4, because the clearance between pan feeding mouth baffle and the rotor is very little, and the air current that the rotor operation produced is cut apart by pan feeding mouth baffle and is cut off, therefore the air current can only flow downwards along rotor tangential direction, can form the positive pressure district in the sealed cowling, and sealed difficulty causes dusty gas to flow to outside discharge, polluted environment.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349163.0A CN112934370B (en) | 2021-03-31 | 2021-03-31 | An internal airflow self-circulating impact crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349163.0A CN112934370B (en) | 2021-03-31 | 2021-03-31 | An internal airflow self-circulating impact crusher |
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| Publication Number | Publication Date |
|---|---|
| CN112934370A true CN112934370A (en) | 2021-06-11 |
| CN112934370B CN112934370B (en) | 2025-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110349163.0A Active CN112934370B (en) | 2021-03-31 | 2021-03-31 | An internal airflow self-circulating impact crusher |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643102A (en) * | 2022-01-14 | 2022-06-21 | 河南黎明重工科技股份有限公司 | Coarse crushing hammer crusher |
| CN115283079A (en) * | 2022-07-12 | 2022-11-04 | 南昌矿机集团股份有限公司 | Circulating return air dust-reducing impact crusher |
| CN118454808A (en) * | 2024-07-15 | 2024-08-09 | 山东清河建工有限责任公司 | Construction waste crushing equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203245U (en) * | 1985-07-29 | 1986-10-22 | 水利电力部华东电力设计院 | Striking-back crusher with the function of dedust |
| CN2060087U (en) * | 1989-01-17 | 1990-08-08 | 沈阳电力机械厂 | Ring hammer crusher |
| 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 |
| CN214765854U (en) * | 2021-03-31 | 2021-11-19 | 河南黎明重工科技股份有限公司 | An internal airflow self-circulation type impact crusher |
-
2021
- 2021-03-31 CN CN202110349163.0A patent/CN112934370B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203245U (en) * | 1985-07-29 | 1986-10-22 | 水利电力部华东电力设计院 | Striking-back crusher with the function of dedust |
| CN2060087U (en) * | 1989-01-17 | 1990-08-08 | 沈阳电力机械厂 | Ring hammer crusher |
| 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 |
| CN214765854U (en) * | 2021-03-31 | 2021-11-19 | 河南黎明重工科技股份有限公司 | An internal airflow self-circulation type impact crusher |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643102A (en) * | 2022-01-14 | 2022-06-21 | 河南黎明重工科技股份有限公司 | Coarse crushing hammer crusher |
| CN115283079A (en) * | 2022-07-12 | 2022-11-04 | 南昌矿机集团股份有限公司 | Circulating return air dust-reducing impact crusher |
| CN118454808A (en) * | 2024-07-15 | 2024-08-09 | 山东清河建工有限责任公司 | Construction waste crushing equipment |
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| Publication number | Publication date |
|---|---|
| CN112934370B (en) | 2025-01-28 |
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