CN112934694B

CN112934694B - Gangue screening installation

Info

Publication number: CN112934694B
Application number: CN202110118551.8A
Authority: CN
Inventors: 武晓敏; 贾丽; 雷隽娴; 屈昌辉
Original assignee: Chongqing City Management College
Current assignee: Qingdao Mining and Metallurgy Energy Technology Co.,Ltd.
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2023-03-10
Anticipated expiration: 2041-01-28
Also published as: CN112934694A

Abstract

The invention relates to the technical field of stone crushing, and discloses coal gangue screening equipment which comprises a rack, wherein a body is fixedly arranged on the rack, a screening barrel is fixed on the body, the screening barrel is communicated with a feeding mechanism, and the screening barrel is communicated with a dust removing mechanism; a stirring mechanism driven by a power part is arranged in the screening barrel, a plurality of screening holes are formed in the side wall of the screening barrel, a discharge channel communicated with the screening holes is formed in the body, and the discharge channel is communicated with the dust removal mechanism; the side wall of the discharge channel is provided with a plurality of vibrating pieces, the discharge channel is communicated with a collection cavity, and the collection cavity is communicated with a discharge port outside. The invention has simple structure and can screen out the dust in the gangue particles so as to improve the quality of the gangue particles.

Description

Gangue screening installation

Technical Field

The invention relates to the technical field of stone crushing, and particularly discloses coal gangue screening equipment.

Background

The gangue, which is the stone mixed in the coal seam, contains a small amount of combustible substances and is not easy to burn, is commonly called as 'gangue'. During mining, the crushed rock is extracted from the well or mixed into the ore, and the thin rock layer in the middle of the coal bed is called 'stone inclusion'. The waste rock on the ground of the mine is piled up to be called a 'waste rock hill', and the waste rock can be used as a raw material of a building material.

Waste rock can be used as a building material or for pit backfilling, the waste rock used as the building material or for pit backfilling needs to be crushed to a certain particle size, waste rock particles need to be screened, a conventional screening mode generally utilizes a filter screen for screening, however, the filtering screen is used for screening, so that powder in the waste rock particles is difficult to remove, and the waste rock particles contain partial powder, so that the quality of the waste rock particles is affected.

Disclosure of Invention

The invention aims to provide coal gangue screening equipment for screening powder in gangue particles so as to improve the quality of the gangue particles.

In order to achieve the above object, the basic scheme of the invention is as follows: a coal gangue screening device comprises a rack, wherein a body is fixedly arranged on the rack, a screening barrel is fixed on the body, the screening barrel is communicated with a feeding mechanism, and the screening barrel is communicated with a dust removal mechanism; a stirring mechanism driven by a power part is arranged in the screening barrel, a plurality of screening holes are formed in the side wall of the screening barrel, a discharge channel communicated with the screening holes is formed in the body, and the discharge channel is communicated with the dust removal mechanism; the side wall of the discharge channel is provided with a plurality of vibrating pieces, the discharge channel is communicated with a collection cavity, and the collection cavity is communicated with an external discharge port.

The principle and the beneficial effects of the invention are as follows: feeding mechanism carries the waste rock granule to the screening bucket in, and rabbling mechanism stirs the waste rock granule that sends into to the screening bucket to make the dust break away from in the waste rock granule, and then be convenient for dust removal mechanism takes away the dust in the waste rock granule, in order to carry out preliminary screening to the waste rock granule. After the preliminary screening of waste rock granule, discharge to the discharge way in through the sieve material hole, the waste rock granule bumps with the trembler for dust and breaking away from on the waste rock granule, because dust removal mechanism and discharge way intercommunication, the dust that breaks away from with the vibration of waste rock granule is taken away, further sieves the waste rock granule, makes the dust in the waste rock granule further reduce, and the waste rock granule after the processing gets into to collecting the intracavity, and discharges away through collecting the chamber. This scheme removes the dust many times to make the dust in the waste rock granule reduce many times, improve the quality of waste rock granule.

Further, the feeding mechanism comprises a first negative pressure machine, an inlet of the first negative pressure machine is communicated with a material box, and an outlet of the first negative pressure machine is communicated with the screening barrel.

Has the advantages that: the first negative pressure machine sucks the gangue particles and the dust through the negative pressure effect, then sends the gangue particles into the screening barrel in an injection mode, and when the gangue particles are sprayed, the dust is separated from the gangue particles to a certain extent under the action of gravity, so that the dust removing mechanism can suck the dust away.

Further, the dust removal mechanism comprises a second negative pressure machine, an inlet of the second negative pressure machine is communicated with a main pipe, the main pipe is communicated with the screening barrel, and the main pipe is communicated with a branch pipe communicated with the discharge channel.

Has the beneficial effects that: when the second negative pressure machine works, the second negative pressure machine pumps away dust in the screening barrel and the discharging channel through the main pipe and the branch pipes, so that the purpose of pumping dust for many times is realized, and the dust amount in the gangue particles is reduced.

Further, the stirring mechanism comprises a motor, a stirring shaft is coaxially fixed on an output shaft of the motor, and stirring blades are fixed on the stirring shaft.

Has the beneficial effects that: when the motor works, the motor drives the stirring shaft and the stirring blades to rotate so as to stir the gangue particles to a certain degree, so that the gangue particles are further separated from dust, and the dust removing mechanism is further convenient to take the dust away.

Further, the below of screening bucket is provided with prevents stifled mechanism, prevent stifled mechanism include with (mixing) shaft fixed connection's pivot, open in the pivot along its circumference has a plurality of spouts that are the V type, communicate between two adjacent spouts, vertical sliding connection has prevents stifled axle on the body, prevents stifled epaxial be provided with spout sliding fit's slider, prevent stifled epaxial a plurality of anti-blocking pieces of being made by elastic material that are provided with.

Has the advantages that: when the (mixing) shaft rotated, the (mixing) shaft can drive the pivot and rotate, and when the pivot rotated, the pivot was passed through spout and slider and was driven and prevented stifled vertical reciprocating sliding of axle, prevented stifled vertical reciprocating sliding in-process of axle, prevented stifled axle pulling and prevented stifled piece vertical motion, when preventing stifled piece and screening pore pair in line, it was downthehole that the stifled piece stretches into to the screening to push into the downthehole waste rock granule of screening to the screening bucket in, in order to reach and prevent stifled purpose. Install the pivot on the (mixing) shaft in this scheme to make the structure more concentrated, simultaneously, utilize the motor effect to realize preventing stifled purpose.

Furthermore, a guide shaft which is vertically and slidably connected with the anti-blocking shaft is fixed on the screening barrel, and a limiting plate which is positioned below the anti-blocking shaft is fixed at the lower part of the guide shaft.

Has the beneficial effects that: in the vertical sliding process of the anti-blocking shaft, the anti-blocking shaft is guided through the guide shaft, and meanwhile, the anti-blocking shaft is limited by the limiting plate, so that the anti-blocking shaft is prevented from sliding out of the guide shaft.

Further, be provided with a plurality of dust removal chambeies on the body, the dust removal intracavity is fixed with the fan, and the dust removal chamber intercommunication has and collects the gas pocket of chamber intercommunication, and the dust removal chamber intercommunication has the air flue with outside intercommunication.

Has the beneficial effects that: the fan passes through the air flue and inhales the outside air to the fan blows off the inspiratory air to collecting the intracavity through the gas pocket, in order to blow the waste rock granule, and blows the dust on the waste rock granule upwards, siphons away through dust removal mechanism, further improves the dust effect of getting rid of on the waste rock granule.

Further, the vibrating piece is made of an elastic material.

Has the advantages that: when the gangue particles impact the vibrating plate, the gangue particles vibrate, and then dust on the gangue particles is vibrated and separated.

Further, the collection chamber is tapered.

Has the advantages that: because in this scheme, collect the chamber and be the toper to make the waste rock granule flow to the discharge gate along with conical inclined plane, in order to accelerate the discharge efficiency of waste rock granule.

Further, an outlet of the second negative pressure machine is communicated with a collecting box.

Has the beneficial effects that: and the second negative pressure machine sends the gangue particles into the collection box so as to be convenient for collecting the gangue particles.

Drawings

FIG. 1 is a sectional view of a gangue screening apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a sectional view of a gangue screening apparatus according to a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a body 11, a collection cavity 12, a discharge channel 13, a vibrating piece 131, a second negative pressure machine 14, a main pipe 15, a branch pipe 151, a screening barrel 16, a screening hole 161, a motor 17, a stirring shaft 18, a stirring blade 181, a first negative pressure machine 19, a feeding pipe 191, a discharge port 20, an anti-blocking shaft 21, an anti-blocking block 211, a guide shaft 22, a limiting plate 221, a rotating shaft 23, a sliding groove 24, a sliding block 25, a dust removal cavity 31, a fan 32, an air passage 33 and an air hole 34.

The first embodiment is as follows:

substantially as shown in figures 1 and 2: the utility model provides a gangue screening installation, includes the frame, and the bolt fastening has body 11 in the frame, and the upper portion bolt fastening of body 11 has screening bucket 16, and the bolt fastening has first negative pressure machines 19 on the body 11, and first negative pressure machines 32's import intercommunication has the material case, and first negative pressure machines 32's export intercommunication has inlet pipe 191,

inlet pipe

191 and 16 intercommunications of screening bucket. Be provided with rabbling mechanism on screening bucket 16, rabbling mechanism includes motor 17, coaxial bolt is fixed with (mixing) shaft 18 on motor 17's the output shaft, welded fastening has stirring vane 181 on the (mixing) shaft 18, it has a plurality of screening holes 161 to open on the both sides wall of screening bucket 16 lower part, the lower extreme coaxial bolt of (mixing) shaft 18 is fixed with pivot 23, the spout 24 that has a plurality of V types is opened along its circumference to the lower extreme of pivot 23, communicate between two adjacent spout 24, vertical sliding connection has a plurality of stifled axles 21 on body 11, stifled axle 21 is the L type, the horizontal segment integrated into one piece of stifled axle 21 has slider 25, slider 25 stretches into in 24 spout and

slider

25 and 24 and spout 24 sliding fit, pivot 23, spout 24 constitutes cylindrical cam mechanism with slider 25, the vertical section fix with screw of stifled axle 21 has a plurality of anti-blocking piece 211, anti-blocking piece 211 is made by elastic material, elastic material is as: rubber, the vertical sliding connection of horizontal segment of preventing stifled axle 21 has guiding axle 22, and guiding axle 22 bolt fastening is on body 11, and the lower extreme fix with screw of guiding axle 22 has limiting plate 221, and limiting plate 221 is located the below of preventing stifled axle 21. The body 11 is provided with a conical collecting cavity 12, the collecting cavity 12 is communicated with the discharge channel 13, two side walls of the discharge channel 13 are fixed with vibrating pieces 131 through screws, and the vibrating pieces 131 are made of elastic materials such as rubber. The body 11 is provided with a discharge opening 20 which is communicated with the collecting cavity 12.

The second negative pressure machine 14 is bolted to the body 11, in this embodiment, an inlet of the second negative pressure machine 14 is communicated with a main pipe 15, the main pipe 15 is communicated with a branch pipe 151 communicated with the discharge channel 13, and an outlet of the second negative pressure machine 14 is communicated with a collection tank (not shown in the figure).

The specific implementation process is as follows:

the first negative pressure machine 19 sends the gangue particles and the dust in the material box into the screening barrel 16 through the feeding pipe 191, and the gangue particles and the dust are sprayed into the screening barrel 16 under the action of the first negative pressure machine 19, and the gangue particles and the dust are separated to a certain extent due to the spraying mode. Meanwhile, the motor 17 drives the stirring shaft 18 to rotate, and the stirring shaft 18 drives the stirring blade 181 to rotate, so that the stirring blade 181 stirs the gangue particles and the dust, and the dust adsorbed on the gangue particles is stirred and separated. The second suction machine 14 draws away the dust in the screening drum 16 via the main pipe 15, so that gangue particles are separated from the dust and the dust is transported into a collection bin via the second suction machine 14.

Through the waste rock granule of handling for the first time, discharge to the discharge way 13 in through screening hole 161, when the waste rock granule drops in discharge way 13, the waste rock granule collides with trembler 131 for the waste rock granule vibrates, further breaks away from absorbent dust on the waste rock granule, and the dust that breaks away from takes away through the auxiliary pipe, so further breaks away from the dust on the waste rock granule, with the quality that improves the waste rock granule. The gangue particles are guided through the collecting chamber 12 and discharged through the discharge opening 20.

When the stirring shaft 18 rotates, the stirring shaft 18 drives the rotating shaft 23 to rotate, the rotating shaft 23 rotates in the process, the rotating shaft 23 drives the anti-blocking shaft 21 to vertically slide through the sliding grooves 24 and the sliding blocks 25, the anti-blocking shaft 21 drives the anti-blocking block 211 to vertically slide, when the anti-blocking block 211 is opposite to the sieve material hole, the anti-blocking block 211 stretches into the sieve material hole, the anti-blocking block 211 pushes gangue particles in the sieve material hole into the sieving barrel 16, and therefore the probability of blocking in the sieve material hole is reduced.

Example two:

the difference between the second embodiment and the first embodiment is that, as shown in fig. 3, the body 11 is provided with a plurality of dust removing cavities 31, the dust removing cavities 31 are internally provided with fans 32 which are bolted on the body 11, the fans 32 are exhaust fans 32, the dust removing cavities 31 are communicated with air passages 33, the dust removing cavities 31 are provided with air holes 34 which are communicated with the collecting cavities 12, air inlets of the fans 32 are communicated with the air passages 33, and air outlets of the fans 32 face the air holes 34.

When the fan 32 works, the fan 32 sucks external air through the air passage 33, the fan 32 blows air into the collection cavity 12 through the air holes 34, and the air flows to blow away dust on the gangue particles, so that the dust on the gangue particles is reduced, and the quality of the gangue particles is further improved. Under the effect of dust removal mechanism, gas upwards flows, when passing discharge way 13 to blow off the dust on the waste rock granule, simultaneously, the dust is taken away through dust removal mechanism, reduces the volume of dust, improves the quality on the waste rock granule.

The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A coal gangue screening equipment is characterized in that: the screening machine comprises a rack, wherein a body is fixedly arranged on the rack, a screening barrel is fixed on the body, the screening barrel is communicated with a feeding mechanism, and the screening barrel is communicated with a dust removal mechanism;

the side wall of the screening barrel is provided with a plurality of screening holes, the body is provided with a discharge channel communicated with the screening holes, and the discharge channel is communicated with the dust removal mechanism;

the side wall of the discharge channel is provided with a plurality of vibrating pieces, the discharge channel is communicated with a collection cavity, and the collection cavity is communicated with a discharge port outside;

a stirring mechanism is arranged in the screening barrel and comprises a motor, a stirring shaft is coaxially fixed on an output shaft of the motor, and stirring blades are fixed on the stirring shaft;

the below of screening bucket is provided with prevents stifled mechanism, prevent stifled mechanism includes the pivot, pivot and (mixing) shaft fixed connection, it has a plurality of spouts that are the V type to open along its circumference in the pivot, intercommunication between two adjacent spouts, vertical sliding connection has prevents stifled axle on the body, prevent stifled epaxial being provided with spout sliding fit's slider, prevent stifled epaxial being provided with a plurality of anti-blocking pieces of being made by elastic material, anti-blocking piece is used for preventing to block up with the cooperation of screening hole, prevent stifled epaxial still vertical sliding connection have the guiding axle, the guiding axle is used for leading to preventing stifled axle.

2. The coal refuse screening apparatus of claim 1, characterized in that: the feeding mechanism comprises a first negative pressure machine, an inlet of the first negative pressure machine is communicated with the material box, and an outlet of the first negative pressure machine is communicated with the screening barrel.

3. The coal refuse screening apparatus of claim 2, characterized in that: the dust removal mechanism comprises a second negative pressure machine, an inlet of the second negative pressure machine is communicated with a main pipe, the main pipe is communicated with the screening barrel, and the main pipe is communicated with a branch pipe communicated with the material discharge channel.

4. The coal refuse screening apparatus of claim 3, characterized in that: and a limiting plate positioned below the anti-blocking shaft is fixed at the lower part of the guide shaft.

5. The coal refuse screening apparatus of claim 4, characterized in that: be provided with a plurality of dust removal chambeies on the body, the dust removal intracavity is fixed with the fan, and the dust removal chamber intercommunication has and collects the gas pocket of chamber intercommunication, and the dust removal chamber intercommunication has the air flue with outside intercommunication.

6. The coal refuse screening apparatus of claim 5, characterized in that: the vibrating plate is made of an elastic material.

7. The coal refuse screening apparatus of claim 6, characterized in that: the collection chamber is tapered.

8. The coal refuse screening apparatus of claim 7, characterized in that: the outlet of the second negative pressure machine is communicated with a collecting box.