CN212349351U - Large-granularity screen for screening raw coal - Google Patents

Abstract

The utility model discloses a raw coal screening is with big granularity sieve, the on-line screen storage device comprises a base, fixed mounting screens case on the base, the inside screening room that is equipped with of screening incasement portion, screening room slope sets up, the screening room upper end is equipped with the feed inlet, the screening room lower extreme is equipped with first discharge gate, the screening room lateral wall fixed mounting stock guide of feed inlet below, a plurality of roller bearings of screening room bottom fixed mounting, the roller bearing rotates with the sealed of screening room lateral wall to be connected, a plurality of gyro wheels of roller bearing fixed surface installation, roller bearing one end is passed through the shaft coupling and is connected with actuating mechanism, actuating mechanism includes the fixing base, a plurality of drive wheels of fixed mounting on the fixing base, connect through the chain between the drive wheel, the pivot of drive wheel is connected with the output of speed reducer, the input of. The utility model discloses an oval-shaped gyro wheel has strengthened the ability of dialling and sending the material, has avoided the stifled phenomenon of sifter card, and greatly increased the screening efficiency of big granularity material.

Description

Large-granularity screen for screening raw coal

Technical Field

The utility model relates to a raw coal screening field, specificly is a raw coal screening is with big particle size sieve.

Background

The screening mechanical equipment is characterized in that various bulk materials are screened according to the action principles of rotation, vibration, reciprocation, shaking and the like, and are classified into a plurality of grades according to the granularity of the materials, or moisture, impurities and the like in the bulk materials are removed, and then the next processing and the product quality are improved. Depending on the structure and the working principle, screening machines can be broadly divided into the following categories: fixed screens, cylindrical screens, planar motion screens, vibrating screens, roller screens, and the like. Screening of large particle size in raw coal screening is always a difficult problem of material screening, and when materials with particle sizes larger than 200mm are processed and screened, most of existing screening equipment is a slideway screen. The large-granularity materials are mostly irregular in shape, and the sliding way sieve shifting teeth are often blocked, so that equipment is stopped, and production operation is influenced.

The patent with publication number CN103537431B discloses a roller screen for coal, which comprises a material distribution device arranged at a feed inlet, an iron remover arranged at the upper end of a screen surface, and a screen surface consisting of a roller screen shaft and a screen bar screen shaft, wherein more than two discharge outlets are arranged below the screen surface. The device sieves through the epaxial screen cut of drum sieve, and the material also can block up the screen cut, can lead to the screening effect relatively poor and efficiency reduction when the screen cut blocks up.

Disclosure of Invention

For solving the not enough of mentioning in the above-mentioned background art, the utility model aims to provide a raw coal screening is with big particle size sieve adopts oval gyro wheel, has strengthened the ability of dialling to send the material, has avoided the stifled phenomenon of sifter card, and greatly increased the screening efficiency of big particle size material.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a raw coal screening is with big granularity sieve, the on-line screen storage device comprises a base, fixed mounting screening case on the base, the inside screening chamber that is equipped with of screening case, the slope of screening chamber sets up, the screening chamber upper end is equipped with the feed inlet, the screening chamber lower extreme is equipped with first discharge gate, the screening chamber lateral wall fixed mounting stock guide of feed inlet below, a plurality of rollers of screening chamber bottom fixed mounting, the roller bearing rotates with the sealed of screening chamber lateral wall to be connected, a plurality of gyro wheels of roller bearing fixed surface installation, roller bearing one end is passed through the shaft coupling and is connected with actuating mechanism, actuating mechanism includes the fixing base, a plurality of drive wheels of fixed mounting on the fixing base, connect through the chain between the drive wheel, the pivot of drive wheel is connected with the output of speed reducer, the input.

The bottom of the screening chamber and the horizontal direction form an included angle of 30-45 degrees, a blanking port is arranged at the position, corresponding to the gap of the roller, of the bottom of the screening chamber, the lower portion of the blanking port is connected with the fine material chamber, the fine material chamber is arranged at the bottom of the screening box, and a second discharge port is arranged on one side, close to the feed port, of the fine material chamber.

The roller shafts are uniformly and equidistantly arranged along the bottom of the screening chamber, the shaft connecting line of the roller shafts is parallel to the bottom of the screening chamber, and one end of each roller shaft is connected with the rotating shaft of the driving wheel through a coupler.

The rollers are oval rollers, the rollers are evenly arranged along the axial direction of the roller at equal intervals, and the oval long shafts of the rollers on the roller correspond to the oval short shafts of the rollers on the adjacent roller.

The utility model has the advantages that:

1. the utility model discloses slide the sieve with the tradition and compare, adopt the dialling of oval gyro wheel to send comparatively slick and sly, the tooth is dialled to current dartlike weapon shape of comparing, the stifled condition of material card is difficult for appearing, and equipment sifter installation angle is great, has improved the big granularity material greatly and has been dialled along with the action of gravity and send the effect along with forward.

2. The utility model discloses big particle size sieve drives a plurality of gyro wheels simultaneously for single motor, can make a plurality of roller bearings keep rotating in step, and the gyro wheel adopts oval structure simultaneously, and the oval major axis of gyro wheel corresponds gyro wheel minor axis on the adjacent roller bearing on the roller bearing, and the clearance before the gyro wheel can keep unchangeable on the adjacent roller bearing when the roller bearing rotates in step, can not appear the condition that the sifting surface interferes and the screening granularity changes.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a schematic view of the roller and the driving mechanism of the present invention;

fig. 5 is a schematic view of the roller structure of the adjacent roller of the present invention.

In the figure:

1-base, 2-screening box, 3-screening chamber, 4-feeding hole, 5-first discharging hole, 6-guide plate, 7-rolling shaft, 8-rolling wheel, 9-coupling, 10-driving mechanism, 11-fixing seat, 12-driving wheel, 13-speed reducer, 14-motor, 15-motor seat, 17-fine material chamber, and 18-second discharging hole.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1-5, a large-granularity screen for screening raw coal comprises a base 1, a screening box 2 is fixedly mounted on the base 1, a screening chamber 3 is arranged in the screening box 2, the screening chamber 3 is obliquely arranged, a feed inlet 4 is arranged at the upper end of the screening chamber 3, a first discharge outlet 5 is arranged at the lower end of the screening chamber 3, a material guide plate 6 is fixedly mounted on the side wall of the screening chamber 3 below the feed inlet 4, a plurality of rolling shafts 7 are fixedly mounted at the bottom of the screening chamber 3, the rolling shafts 7 are in sealed and rotary connection with the side wall of the screening chamber 3, a plurality of rolling wheels 8 are fixedly mounted on the surfaces of the rolling shafts 7, one end of each rolling shaft 7 is connected with a driving mechanism 10 through a coupling 9, the driving mechanism 10 comprises a fixed seat 11, a plurality of driving wheels 12 are fixedly mounted on the fixed seat 11, the driving wheels, the speed reducer 13 and the motor 14 are fixedly installed on the motor base 15, and the motor base 15 is fixedly installed on the base 1.

The bottom of the screening chamber 3 and the included angle of the horizontal direction are 30-45 degrees, a blanking port 16 is arranged at the position of the bottom of the screening chamber 3 corresponding to the gap of the roller 7, the lower part of the blanking port 16 is connected with a fine material chamber 17, the fine material chamber 17 is arranged at the bottom of the screening box 2, and a second discharging port 18 is arranged on one side, close to the feeding port 4, of the fine material chamber 17.

The rollers 7 are uniformly arranged at equal intervals along the bottom of the screening chamber 3, the axis connecting line of the rollers 7 is parallel to the bottom of the screening chamber 3, and one end of each roller 7 is connected with the rotating shaft of the driving wheel 12 through a coupler 9.

The rollers 8 are oval rollers, the rollers 8 are evenly arranged along the axial direction of the rolling shaft 7 at equal intervals, and the oval major axis of each roller 8 on the rolling shaft 7 corresponds to the oval minor axis of each roller 8 on the adjacent rolling shaft 7.

The working principle is as follows:

when the device is used for screening raw coal, the raw coal to be screened is added into the screening chamber 3 from the feeding hole 4, the raw coal rolls to the upper part of the rolling shaft 7 under the action of the material guide plate 6, and then is continuously pushed forward by a plurality of groups of rolling shafts 7, wherein the raw coal is smaller than the gap between the rolling shafts 7, falls into the fine material chamber 17, is larger than the gap between the rolling shafts 7, and flows out from the first discharging hole 5 on the screen along with the continuous pushing of the oval rolling wheel 8.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (4)

1. The large-granularity screen for screening raw coal is characterized by comprising a base (1), wherein a screening box (2) is fixedly installed on the base (1), a screening chamber (3) is arranged inside the screening box (2), the screening chamber (3) is obliquely arranged, a feeding hole (4) is formed in the upper end of the screening chamber (3), a first discharging hole (5) is formed in the lower end of the screening chamber (3), a material guide plate (6) is fixedly installed on the side wall of the screening chamber (3) below the feeding hole (4), a plurality of rolling shafts (7) are fixedly installed at the bottom of the screening chamber (3), the rolling shafts (7) are rotatably connected with the side wall of the screening chamber (3) in a sealing mode, a plurality of rolling wheels (8) are fixedly installed on the surfaces of the rolling shafts (7), one ends of the rolling shafts (7) are connected with a driving mechanism (10) through couplers (9), and the driving mechanism (10) comprises, the utility model discloses a motor, including fixing base (11), fixed mounting is a plurality of drive wheels (12) on fixing base (11), connect through the chain between drive wheel (12), the pivot of drive wheel (12) is connected with the output of speed reducer (13), the input of speed reducer (13) is connected with the output shaft of motor (14), speed reducer (13) and motor (14) fixed mounting are on motor cabinet (15), motor cabinet (15) fixed mounting is on base (1).

2. The large-particle-size screen for screening raw coal according to claim 1, wherein an included angle between the bottom of the screening chamber (3) and the horizontal direction is 30-45 degrees, a blanking port (16) is arranged at a gap, corresponding to the roller (7), at the bottom of the screening chamber (3), a fine material chamber (17) is connected below the blanking port (16), the fine material chamber (17) is arranged at the bottom of the screening box (2), and a second discharge port (18) is arranged on one side, close to the feed port (4), of the fine material chamber (17).

3. The large-granularity screen for screening raw coal as claimed in claim 1, wherein the rollers (7) are uniformly and equidistantly arranged along the bottom of the screening chamber (3), the axis connecting line of the rollers (7) is parallel to the bottom of the screening chamber (3), and one end of each roller (7) is connected with the rotating shaft of the driving wheel (12) through a coupler (9).

4. The large-granularity screen for screening raw coal as claimed in claim 1, wherein the rollers (8) are elliptical rollers, the rollers (8) are uniformly and equidistantly arranged along the axial direction of the roller (7), and the elliptical long axis of the roller (8) on the roller (7) corresponds to the elliptical short axis of the roller (8) on the adjacent roller (7).

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