CN216440768U

CN216440768U - Closed type circulating dust and sand collecting device of impact crusher

Info

Publication number: CN216440768U
Application number: CN202120656726.6U
Authority: CN
Inventors: 韩飞; 罗振伟; 王娟; 林辉; 王伟; 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: 2022-05-06
Anticipated expiration: 2031-03-31

Abstract

The utility model relates to a dust and sand collecting device of a crusher, in particular to a closed circulating dust and sand collecting device of an impact crusher, which comprises the impact crusher arranged on a base, wherein a discharge port of the impact crusher is hermetically connected with a conveyer belt arranged below the discharge port through a sealing cover, a feed inlet slide carriage is provided with a return air inlet, an air outlet is arranged on the sealing cover opposite to the rotation direction of a rotor, and the air outlet is sequentially communicated with an air inlet pipe, a cyclone powder collector, an air outlet pipe of the cyclone powder collector, a centrifugal fan I, an air return pipe, the return air inlet and the interior of the crusher; the air outlet pipe of the cyclone powder collector is also sequentially communicated with a dust removal pipeline, a pulse dust collector and a centrifugal fan II; the lower ends of the cyclone powder collector and the pulse dust collector are respectively connected with the material bin and the powder bin. The utility model can collect fine sand and dust in the crushing process, does not increase energy consumption, and reduces dust pollution to the environment and equipment.

Description

Closed type circulating dust and sand collecting device of impact crusher

Technical Field

The utility model relates to a dust and sand removing device of a crusher, in particular to a closed-loop circulating dust and sand removing device which enables the interior of an impact crusher to form a negative pressure state and can remove dust and collect sand.

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.

During the high-speed running process of the rotor of the impact crusher, materials are continuously impacted and crushed, and a large amount of sand and micro powder below 5mm 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 material from directly falling from the feeding port without participating in collision, the feeding port of a common impact crusher can be set to keep a small gap with the rotor, so that the air flow generated when the rotor rotates is cut off, the air entering from the feeding port cannot form an internal closed circulation, most of the air flow can only be discharged from the discharge 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, the air volume discharged by the crusher is large, and the dust removal device with large air volume needs to be provided. Meanwhile, the micro powder generated by the impact crusher contains a large amount of useful sand with the thickness of more than 0.075mm, and is also treated by high-power dust removal equipment, so that the waste of resources is caused. Meanwhile, the grain shape of the finished material output by the impact crusher has great advantages compared with that of the traditional crushing equipment, so that the impact crusher mechanism sand is expected by users more and more along with the continuous development of the impact crusher.

Therefore, how to recycle the generated fine sand on the premise of keeping the existing structure of the impact crusher and solve the problem of dust removal treatment of the impact crusher is the key direction of industrial research.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a closed-loop circulating dust and sand removing and collecting device for an impact crusher, which can collect and treat fine sand generated in the production process, reduce dust pollution, fully utilize downward exhaust flow generated inside the impact crusher, avoid energy consumption and reduce dust pollution to the environment and equipment.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an impact crusher closed circulation dust removal sand-collecting device, is including setting up the impact crusher on the base, and the discharge gate of impact crusher passes through sealed cowling sealing connection, its characterized in that with the conveyer belt that its below set up: an air return port is formed in a feed port slide carriage of the impact crusher, an air outlet is formed in a sealing cover opposite to the rotation direction of a rotor of the impact crusher and communicated with an air inlet pipe, an outlet of the air inlet pipe is communicated with an inlet of a cyclone powder collector, an outlet of the cyclone powder collector is communicated with an air outlet pipe of the cyclone powder collector, an outlet of the air outlet pipe of the cyclone powder collector is connected with a centrifugal fan I, an air outlet of the centrifugal fan I is communicated with an air return pipe, and the other end of the air return pipe is communicated with the air return port of the impact crusher; the air outlet pipe of the cyclone powder collector is also communicated with a dust removal pipeline, the other end of the dust removal pipeline is communicated with an inlet of a pulse dust collector, and an outlet of the pulse dust collector is connected with a centrifugal fan II; the lower end of the cyclone powder collector is connected with a bin, and the lower end of the pulse dust collector is connected with a powder bin.

The air outlet is arranged on the sealing cover on the extension line of the tangent line when the rotor rotates.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model fully utilizes the lower exhaust flow generated by the rotor of the impact crusher, and forms an airflow circulating system by combining the crusher with the cyclone powder collector, the centrifugal fan I and the gas pipeline, thereby effectively recycling fine sand with the thickness of more than 0.075mm, and keeping the interior of the impact crusher in a negative pressure state all the time by connecting the pulse dust collector with the centrifugal fan II. Make the air current recycle, reduced the wasting of resources, not only can carry out recycle to the fine sand that produces in the broken production process, can also carry out dust removal treatment to the miropowder, improve resource utilization and prevent dust pollution, accord with green's development theme. In addition, in the fine sand recovery process, the air pressure in the air inlet pipe is in a local positive pressure state, and the sand-containing airflow leading to the cyclone powder collector is a fan effect generated when the rotor rotates, so that the centrifugal fan I only needs small power for assistance, the pulse dust collector only removes dust of part of the powder-containing airflow, and the rest of the airflow runs in the circulating system, so that the dust removal power of the pulse dust collector is reduced.

Drawings

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

In the figure: 1. the impact crusher comprises an impact crusher 2, a rotor 3, a base 4, a conveying belt 5, a sealing cover 6, a discharge port 7, an air outlet 8, a storage bin 9, a cyclone powder collector 10, a powder bin 11, a dust removal pipeline 12, a pulse dust collector 13, a centrifugal fan II 14, a cyclone powder collector air outlet pipe 15, a centrifugal fan I16, an air inlet pipe 17, an air return pipe 18, a feeding port slide carriage 19, feeding ports, 20 and an air return port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1, a closed circulation dust and sand collecting device for impact crusher comprises an impact crusher 1 fixed on a base 3, a discharge port 6 of the impact crusher 1 is connected with a conveyer belt 4 arranged below the discharge port through a sealing cover 5 in a sealing manner, a return air inlet 20 is arranged on a feed inlet slide carriage 18 of the impact crusher 1, an air outlet 7 is arranged on the sealing cover 5 opposite to the rotation direction of a rotor 2 of the impact crusher, the air outlet 7 is arranged on the sealing cover 5 on a tangent extension line when the rotor 2 rotates, the air outlet 7 is a positive pressure area formed by air flow at the sealing cover 5, and the air flow is driven by the rotor 2 to pass through the air outlet 7 and enter an air inlet pipe 16. The air outlet 7 is communicated with an air inlet pipe 16, an outlet of the air inlet pipe 16 is communicated with an inlet of a cyclone powder collector 9, an outlet of the cyclone powder collector 9 is communicated with an air outlet pipe 14 of the cyclone powder collector, an outlet of the air outlet pipe 14 of the cyclone powder collector is connected with a centrifugal fan I15, an air outlet of the centrifugal fan I15 is communicated with an air return pipe 17, and the other end of the air return pipe 17 is communicated with an air return opening 20 of the impact crusher 1; the air outlet pipe 14 of the cyclone powder collector is also communicated with a dust removal pipeline 11, the other end of the dust removal pipeline 11 is communicated with an inlet of a pulse dust collector 12, and an outlet of the pulse dust collector 12 is connected with a centrifugal fan II 13; the lower end of the cyclone powder collector 9 is connected with a bin 8 for collecting the recovered fine sand with the diameter of more than 0.075mm, and the lower end of the pulse dust collector 12 is connected with a powder bin 10 for collecting the micro powder with the diameter of less than 0.075 mm.

The working principle is as follows: when the impact crusher 1 works, materials to be crushed enter the impact crusher from the feed hopper, impact the impact frame to be crushed through the driving of the rotor 2, and the finished materials flow out of the discharge port to enter the sealing cover 5 and finally enter the conveyer belt 4 to finish the transfer of the finished materials.

Before the impact crusher 1 works, a centrifugal fan I15 and a centrifugal fan II 13 are started, so that the cyclone powder collector 9 and the pulse dust collector 12 are in a negative pressure state, when the rotor 2 works and operates, the generated working airflow drives fine sand and micro powder to flow to a discharge port 6 along with the airflow, because the sealing cover 5 is connected with the conveying belt 4 in a sealing way, the airflow can move to an air outlet 7 under the driving of the rotor 2 and enters the cyclone powder collector 9 through an air inlet pipe 16, the fine sand with corresponding granularity is recovered through the cyclone powder collector 9, the processed airflow flows out of the cyclone powder collector 9 into an air outlet pipe 14 of the cyclone powder collector under the action of the centrifugal fan I15 and the centrifugal fan II 13, part of the processed airflow is shunted by the dust removal pipeline 11 and enters the pulse dust collector 12 for dust removal, the processed airflow is discharged to the external environment through the centrifugal fan II 13, and most of the rest of the airflow returns to the inner shape of the impact crusher through an air return pipe 17 under the action of the centrifugal fan I15 Internal circulation of the resultant gas stream. Because the rotor 2 is in continuous circulation operation, the working airflow generated by the rotor continuously flows along with the rotor, and in order to ensure that the inside of the system is always kept in a negative pressure state, the pulse dust collector 12 is connected to the outside of the cyclone powder collector 9 for further dust removal treatment, and the airflow subjected to dust removal treatment is discharged to the outside through the centrifugal fan II 13, so that the negative pressure circulation airflow state is always kept in the crushing cavity of the impact crusher 1, and the situation that the inner micro powder is discharged outside and pollutes the environment is prevented.

Cyclone dust collector 9 can filter 80% fine sand more than 0.075mm in the sand-containing air current to collect the processing through the feed bin, improve the product utilization rate of grit material.

While there have been shown and described the fundamental principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an impact crusher closed circulation dust removal sand-collecting device, is including setting up the impact crusher on the base, and the discharge gate of impact crusher passes through sealed cowling sealing connection, its characterized in that with the conveyer belt that its below set up: an air return port is formed in a feed port slide carriage of the impact crusher, an air outlet is formed in a sealing cover opposite to the rotation direction of a rotor of the impact crusher and communicated with an air inlet pipe, an outlet of the air inlet pipe is communicated with an inlet of a cyclone powder collector, an outlet of the cyclone powder collector is communicated with an air outlet pipe of the cyclone powder collector, an outlet of the air outlet pipe of the cyclone powder collector is connected with a centrifugal fan I, an air outlet of the centrifugal fan I is communicated with an air return pipe, and the other end of the air return pipe is communicated with the air return port of the impact crusher; the air outlet pipe of the cyclone powder collector is also communicated with a dust removal pipeline, the other end of the dust removal pipeline is communicated with an inlet of a pulse dust collector, and an outlet of the pulse dust collector is connected with a centrifugal fan II; the lower end of the cyclone powder collector is connected with a bin, and the lower end of the pulse dust collector is connected with a powder bin.

2. The closed cycle dust and sand collecting device of the impact crusher according to claim 1, characterized in that: the air outlet is arranged on the sealing cover on the extension line of the tangent line when the rotor rotates.