CN214765854U

CN214765854U - Internal airflow self-circulation type impact crusher

Info

Publication number: CN214765854U
Application number: CN202120656725.1U
Authority: CN
Inventors: 赵大力; 林辉; 王伟; 韩飞; 罗振伟; 杨聪俐; 杨岚
Original assignee: Henan Chengdun Intelligent Technology Co ltd; Shibang Industrial Technology Group Co ltd; Shibang Industrial Technology Group Xiuwu Industrial Park Co ltd; Henan Liming Heavy Industry Technology Co Ltd
Current assignee: Henan Chengdun Intelligent Technology Co ltd; Shibang Industrial Technology Group Co ltd; Shibang Industrial Technology Group Xiuwu Industrial Park Co ltd; Henan Liming Heavy Industry Technology Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-19
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to a mine crushing equipment field, concretely relates to an internal airflow self-circulation type impact crusher, a pan feeding port slide carriage is arranged below a frame pan feeding port, a front side plate is arranged below the pan feeding port slide carriage, the front side plate is fixedly connected with the frame, the front side plate is in a bending shape, a pan feeding port baffle is arranged on the frame between the front side plate and a rotor, a gap is arranged between the pan feeding port baffle and the rotor, an air channel is formed between the pan feeding port baffle and the frame of the front side plate and the frame for fixing the front side plate, a gap between the tail end of the pan feeding port baffle and the tail end of the front side plate is an air inlet, a gap between the top end of the pan feeding port baffle and the top end of the front side plate is an air outlet, the internal self-circulation is carried out on the airflow generated when the rotor runs through the air channel by the shortest distance and the smallest resistance, almost 0 is arranged on the air return distance, the air return efficiency is improved, the air pressure at the discharge port 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.

Description

Internal airflow self-circulation type impact crusher

Technical Field

The utility model relates to a mine crushing equipment field, concretely relates to inside air current self-loopa type counterattack breaker.

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

An object of the utility model is to overcome exist among the prior art not enough and provide an inside air current self-loopa type counterattack breaker, reduce circulation wind pressure and the volume of airing exhaust, reduce the dust removal consumption.

The technical scheme of the utility model is realized like this:

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 utility model has the advantages that: the utility model discloses set up built-in wind channel according to impact crusher structure, and set up the air intake through under impact crusher pan feeding mouth baffle, and set up the air outlet between pan feeding mouth carriage apron and pan feeding mouth baffle, the air current that produces when making the rotor operation through the wind channel carries out inside self-loopa with shortest distance and minimum resistance, be 0 on the return air distance almost, the return air efficiency has been improved, the wind pressure of discharge gate department has been reduced, ensure that the inside total air discharge of impact crusher is close to zero, the air discharge has been reduced, the dust removal power has been reduced.

The utility model discloses a wind channel is the partly of impact crusher body, comprises frame, preceding curb plate and pan feeding mouth baffle respectively. The utility model discloses a wind channel setting is in the place ahead pan feeding mouth of rotor below, is in completely on the air current annular moving cuts the circuit line, and the angle that the air current takes place to turn to is less than 30, can not take the air current to produce any resistance almost, and has 90 ~180 elbows in the contrast file CN85203245U, greatly increased the return air resistance, reduced balanced effect.

The utility model discloses need not adopt external equipment and pipeline just can accomplish inside air current self-loopa, and the setting in inside wind channel all constitutes according to the impact crusher structure, consequently the utility model discloses more have whole unity, do not have the shared space of increase impact crusher.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the air duct of the present invention.

Fig. 3 is a schematic view of the internal airflow self-circulation during operation of the present invention.

Fig. 4 is a diagram illustrating a conventional anti-knock breakdown operation.

Fig. 5 is a schematic diagram of the operation of an 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 and the front side plate 8 and the frame fixing the front side plate 8, 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 utility model discloses at the counterattack formula breaker, pan feeding mouth check curtain, the inside seal is a whole under the effect of sealed cowling and conveyer belt, when the rotor carries out work operation, the working air current that produces flows to discharge gate department under the drive of rotor, because the inside atmospheric pressure of sealed cowling is stable and seal, and the wind channel is in open state under the effect of air intake and air outlet, consequently when air current operation discharge gate department, the air current can flow to the air intake under the drive of rotor, and flow to air outlet department along the wind channel, and finally get back to pan feeding mouth department through the air outlet, form inside air current self-loopa, the fan effect that consequently the rotor produced constantly circulates in broken intracavity and operates and form stable working air current gradually.

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 utility model relates to a structural principle of embodiment is, treat that broken material enters into the impact crusher through pan feeding mouth check curtain 17 in, the material is when the air outlet 13, and the less material of granularity can be followed air outlet 13 and directly dropped on in the wind channel, influences the crushing efficiency of 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

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 sets up its characterized in that downwards: 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.