CN219003222U - Air flow self-circulation impact crusher with material throwing device - Google Patents

Abstract

The utility model provides an air current self-loopa reaction breaker with throw material device, includes the frame, is provided with the reaction frame subassembly on the frame top, is provided with the rotor in the frame, and the rotor below sets up the discharge gate, is provided with the board hammer on the rotor circumference, is provided with first clearance between the preceding curb plate that sets up in board hammer outer fringe and the frame, and preceding curb plate top sets up the carriage, sets up the flitch on the carriage, is provided with the second clearance between flitch and the board hammer outer fringe, first clearance be less than the second clearance. According to the utility model, a gap a is arranged between the front side plate of the frame and the outer edge of the plate hammer according to the structure of the impact crusher, the arc throwing plate is arranged at the tail end of the slide carriage, and the gap between the arc throwing plate and the outer edge of the plate hammer is set as b, so that the air flow generated during the running of the rotor carries out internal self-circulation with the shortest distance and the smallest resistance, the air return efficiency is improved, the air pressure at the discharge port is reduced, the total air exhaust amount in the impact crusher is ensured to be close to zero, the air exhaust amount is reduced, and the dust removal power is reduced.

Description

Air flow self-circulation impact crusher with material throwing device

Technical Field

The utility model relates to mine crushing equipment, in particular to an air flow self-circulation impact crusher with a material throwing device.

Background

The impact crusher is used as a crusher for crushing materials by utilizing an impact principle, has the characteristics of simple structure, high reliability, good product particle shape, wide application range and the like, and is widely applied to industries such as mines, chemical engineering, buildings, railways and the like.

During the high-speed running process of the impact crusher rotor, materials are continuously impacted and crushed, and a large amount of micro powder can be generated. At the same time, the high speed rotation of the rotor also generates a fan effect, which causes a larger gas flow inside the crusher, for example, a 200kw power impact crusher can generate 10000 cubic meters of dust-containing gas per hour.

In order to improve the crushing efficiency, the material is prevented from directly falling from the feed inlet and not from participating in collision, the feed inlet baffle of the general impact crusher is arranged to keep a smaller gap c with the rotor, the value of c is usually 10-30mm, so that the air flow generated during the rotation of the rotor is cut off, the air entering from the feed inlet cannot form internal closed circulation, most of the air flow can only be discharged from the discharge outlet, positive pressure is locally generated, the sealing is difficult, and dust is caused by carrying a large amount of micro powder. In order to reduce the influence on the environment, the impact crusher is generally provided with a dust removing device, and the discharged air quantity is large, so that the large air quantity dust removing device is required to be provided, the input cost is increased, and the consumption of dust removing power is also increased.

In spite of the above drawbacks, impact crushers have irreplaceable advantages over other types of crushers in the form of finished granules, and therefore how to reduce the dust discharge amount and dust removal power consumption of impact crushers is an important direction of industry research.

The utility model discloses an internal air flow self-circulation impact crusher' (application number: CN 202110349163.0), which discloses a structure for reducing the air discharge quantity and air discharge pressure and reducing the energy consumption of work and dust removal. The utility model sets up pan feeding mouth baffle, preceding curb plate on the frame between preceding curb plate and the rotor, forms the wind channel between pan feeding mouth baffle and preceding curb plate and the frame of fixed preceding curb plate, and the space between the terminal of pan feeding mouth baffle and the terminal of preceding curb plate is the air intake, and the space between the top of pan feeding mouth baffle and the front curb plate top is the air outlet. Meanwhile, an embodiment of the utility model provides that a height difference is arranged between the top of the feed inlet baffle plate and the inclined surface of the feed inlet slide carriage, and the height difference is used for enabling materials to pass through the air outlet in a flat throwing state under the influence of the height difference when the materials fall from the feed inlet slide carriage, so that the air duct is prevented from being blocked due to the fact that the materials enter the air outlet. The structure needs the material to have higher falling speed and match corresponding larger height difference, so that the material can not enter the air duct, and the material can rebound into the air duct during crushing operation, thereby reducing the use reliability and maintainability.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to reduce the dust discharge amount and the dust removal power consumption of the impact crusher, the air flow self-circulation impact crusher with the material throwing device is simple in structure, high in reliability and convenient to maintain.

The technical scheme of the utility model is as follows:

the utility model provides an air current self-loopa reaction breaker with throw material device, includes the frame, and the frame place ahead sets up the pan feeding mouth, is provided with the reaction frame subassembly on the frame top, is provided with the rotor in the frame, and the rotor below sets up the discharge gate, is provided with the board hammer on the rotor circumference, is provided with first clearance between the preceding curb plate that sets up in board hammer outer fringe and the frame, and preceding curb plate top sets up the carriage, sets up the material throwing board on the carriage, is provided with the second clearance between material throwing board and the board hammer outer fringe, first clearance be less than the second clearance.

The material throwing plate is an arc material throwing plate.

The beneficial effects of the utility model are as follows: according to the utility model, a gap a is arranged between the front side plate of the frame and the outer edge of the plate hammer according to the structure of the impact crusher, the arc throwing plate is arranged at the tail end of the slide carriage, and the gap between the arc throwing plate and the outer edge of the plate hammer is set as b, so that the air flow generated during the running of the rotor carries out internal self-circulation with the shortest distance and the smallest resistance, the air return efficiency is improved, the air pressure at the discharge port is reduced, the total air exhaust amount in the impact crusher is ensured to be close to zero, the air exhaust amount is reduced, and the dust removal power is reduced. Meanwhile, by arranging the arc throwing plate, the problem that materials directly fall from the tail end of the slide carriage is solved, and the crushing efficiency of the impact crusher is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal gas flow self-circulation during operation of the present utility model;

fig. 3 is a schematic diagram of a conventional impact breaking structure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 and 2, an air flow self-circulation impact crusher with a material throwing device comprises a frame 1, wherein a material inlet 2 is formed in front of the frame 1, an impact frame assembly 3 is arranged on the top of the frame 1, a rotor 4 is arranged in the middle of the frame and at a lower position, a material outlet 5 is formed below the rotor 4, and materials fall into a conveying belt 12 from the material outlet 5 downwards. At least four groups of hammers 6 are arranged on the circumference of the rotor 4, a first gap a is arranged between the outer edge of each hammer 6 and a front side plate 7 arranged on the frame 1, a slide carriage 8 is arranged above the front side plate 7, an arc-shaped material throwing plate 9 is arranged on the slide carriage 8, a second gap b is arranged between the arc-shaped material throwing plate 9 and the outer edge of each hammer 6, and the first gap a is smaller than the second gap b.

It should be noted that, the first gap a in the present application is far greater than the existing gap c, where the existing gap c refers to: when the feed inlet baffle is arranged, a gap is reserved between the feed inlet baffle and the rotor. According to the utility model, the baffle plate of the feed inlet is omitted, the internal air flow self-circulation is realized by expanding the gap between the front side plate and the rotor, the problem that materials fall from the tail end of the slide carriage or block the air outlet is solved, the structure is simple and efficient, the internal pressure of the crushing cavity is reduced, the exhaust amount is reduced, and the dust removal power is reduced.

The frame 1 is arranged on the base 10, and when the front side plate 7 extends downwards to the discharge hole, a sealing cover 11 is arranged.

Working principle:

as shown in fig. 2, the inside of the utility model is sealed into a whole under the action of the impact crusher, the sealing cover and the conveyer belt, when the rotor works, the generated working air flow flows to the discharge port 5 under the drive of the rotor 4, and when the air flow runs to the discharge port 5, the air flow can circularly enter the crushing cavity through the second gap b between the circular arc flitch 9 and the outer edge of the plate hammer 6 under the drive of the rotor 4 because the air pressure in the sealing cover is stable and sealed, so that the internal air flow self-circulation is formed, and the fan effect generated by the rotor 4 continuously circulates in the crushing cavity and gradually forms stable working air flow.

When the utility model specifically works, the material to be crushed enters the impact crusher through the feed inlet 2, flows downwards along the slide carriage 8 to form a material flow, passes through the second gap b between the circular arc throwing plate 9 and the outer edge of the plate hammer 6 under the throwing action of the circular arc throwing plate 9, falls in the striking range of the rotor, and impacts the impact frame assembly 3 to crush under the driving of the rotor, and the finished material flows out from the discharge outlet into the sealing cover and is finally collected and conveyed by the conveying belt.

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 air flow to perform internal circulating operation, dust pollution is prevented from being caused by the external discharge of the micro powder outside the cavity of the impact crusher, when the impact crusher finishes working and the internal non-air flow operation, the micro powder falls into the sealing cover under the influence of gravity, is finally collected and conveyed by the conveying belt and is concentrated, and the micro powder generated by the impact crusher is changed into a micro powder raw material capable of being recycled.

The advantage of the utility model can be obtained by comparing the air flow operation conditions of fig. 1 and 3, the working principle of the air flow in the traditional impact crusher is shown in fig. 3, because the gap between the feed inlet baffle and the rotor is small, the air flow generated by the rotor 4 operation is divided and cut off by the feed inlet baffle, so that the air flow can only flow downwards along the tangential direction of the rotor, a positive pressure area can be formed in the sealing cover, the sealing is difficult, and the dust-containing air flow is discharged to the outside and pollutes the environment.

Compared with a comparison document, the utility model has simpler structure, more reliable and convenient maintenance, can perform self-circulation in the air flow in a shorter distance, has the return air distance of 0, greatly improves the return air efficiency, reduces the wind pressure at the discharge port, ensures that the wind pressure at each position in the impact crusher is almost equal, and ensures that the total exhaust amount of the impact crusher is close to 0.

The utility model can complete the internal air flow self-circulation without adopting external equipment and pipelines, and the internal air duct is arranged according to the structure of the impact crusher, so that the utility model has more integral uniformity and does not increase the space occupied by the impact crusher.

Compared with the prior art, the utility model has the fundamental difference that the arrangement of the baffle of the feed inlet is reduced, so that the impact crusher has simpler structure and higher reliability. Meanwhile, the arc material throwing plate is arranged at the tail end of the slide carriage, so that the problem of a gap between the tail end of the slide carriage and the outer edge of the plate hammer of the traditional impact crusher is solved, and the problem that materials in the prior art fall from an air outlet to block the air outlet is solved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims (2)

1. Air current self-loopa reaction breaker with throw material device, including frame (1), frame (1) the place ahead sets up pan feeding mouth (2), is provided with reaction frame subassembly (3) on frame (1) top, is provided with rotor (4) in the frame, and rotor (4) below sets up discharge gate (5), is provided with board hammer (6) on rotor (4) circumference, its characterized in that: a first gap (a) is formed between the outer edge of the plate hammer (6) and a front side plate (7) arranged on the frame (1), a slide carriage (8) is arranged above the front side plate (7), a material throwing plate is arranged on the slide carriage (8), a second gap (b) is formed between the material throwing plate and the outer edge of the plate hammer (6), and the first gap (a) is smaller than the second gap (b).

2. The air flow self-circulating impact crusher with a material throwing device according to claim 1, wherein: the material throwing plate is an arc material throwing plate (9).

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