CN112934370A - Internal airflow self-circulation type impact crusher - Google Patents
Internal airflow self-circulation type impact crusher Download PDFInfo
- Publication number
- 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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- CN
- China
- Prior art keywords
- front side
- frame
- feeding port
- baffle
- feeding mouth
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
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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
- B02C2013/28618—Feeding means
Abstract
The invention relates to the field of mine crushing equipment, in particular to an internal airflow self-circulation type impact crusher, wherein a feeding port slide carriage is arranged below a feeding port of a frame, a front side plate is arranged below the feeding port slide carriage and is fixedly connected with the frame, the front side plate is bent, a feeding port baffle is arranged on the frame between the front side plate and a rotor, a gap is formed between the feeding port baffle and the rotor, an air channel is formed between the feeding port baffle and the front side plate as well as the frame for fixing the front side plate, a gap between the tail end of the feeding port baffle and the tail end of the front side plate is an air inlet, a gap between the top end of the feeding port baffle and the top end of the front side plate is an air outlet, airflow generated during the operation of the rotor is internally and self-circulated by the shortest distance and the smallest resistance through the air channel, the distance is almost 0, the air return efficiency is improved, the air pressure at a discharging port is reduced, and the total air, the air exhaust amount is reduced, and the dust removal power is reduced.
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)
1. The utility model provides an inside air current self-loopa type counterattack breaker, is including setting up the counterattack breaker on the base, and the counterattack breaker includes the frame, and the inboard top of frame is connected with the counterattack frame through counterattack frame adjusting device, and counterattack frame adjusting device runs through the top of frame, and the counterattack frame is connected with the articulated of corresponding counterattack frame adjusting device, and the inboard lower part of frame is provided with the rotor, and the rotor below is provided with the discharge gate, and discharge gate department is provided with the sealed cowling, and the sealed cowling below is provided with the conveyer belt, the sealed cowling with discharge gate, conveyer belt all seal and connect, frame pan feeding mouth department is provided with pan feeding mouth check curtain, frame pan feeding mouth below is provided with the pan feeding mouth swift current board, and the slope of pan feeding mouth swift current board: 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.
2. The internal airflow self-circulation type impact crusher according to claim 1, characterized in that: 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 lining plate.
3. The internal airflow self-circulation type impact crusher according to claim 1, characterized in that: and a feeding port slide carriage is provided with a feeding port slide carriage lining plate.
4. The internal airflow self-circulation type impact crusher according to claim 1, characterized in that: the inner side of the front side plate is provided with a front side plate lining plate.
5. The internal airflow self-circulation type impact crusher according to claim 1, characterized in that: and a feeding port baffle lining plate is arranged on one side of the feeding port baffle, which is close to the rotor.
6. The internal airflow self-circulation type impact crusher according to claim 3, 4 or 5, characterized in that: 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.
7. The internal airflow self-circulation type impact crusher according to claim 5, characterized in that: 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.
8. The internal airflow self-circulation type impact crusher according to claim 1, characterized in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349163.0A CN112934370A (en) | 2021-03-31 | 2021-03-31 | Internal airflow self-circulation type impact crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110349163.0A CN112934370A (en) | 2021-03-31 | 2021-03-31 | Internal airflow self-circulation type impact crusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112934370A true CN112934370A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110349163.0A Pending CN112934370A (en) | 2021-03-31 | 2021-03-31 | Internal airflow self-circulation type impact crusher |
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| Country | Link |
|---|---|
| CN (1) | CN112934370A (en) |
Cited By (1)
| 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 |
-
2021
- 2021-03-31 CN CN202110349163.0A patent/CN112934370A/en active Pending
Cited By (1)
| 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 |
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