CN203076185U

CN203076185U - Fluctuating screen

Info

Publication number: CN203076185U
Application number: CN 201320070723
Authority: CN
Inventors: 白一凡; 赵亚明; 林健
Original assignee: WEIFANG HUIYING HEAVY MACHINERY CO Ltd
Current assignee: WEIFANG HUIYING HEAVY MACHINERY CO Ltd
Priority date: 2013-02-06
Filing date: 2013-02-06
Publication date: 2013-07-24
Anticipated expiration: 2023-02-06

Abstract

The utility model discloses a fluctuating screen, and relates to the technical field of screening devices. The fluctuating screen comprises a shell, wherein the shell is provided with a feeding port and a discharging port, a plurality of screen shafts are arranged in the shell in parallel, a plurality of screening slices are sequentially arranged on each screen shaft, the screening film is provided with a long shaft and a short shaft, the screening films in the same sequence on each screen shaft are all on a same plane, and an included angle between the long shafts of two screening films of two adjacent screen shafts on the same plane is 90 degrees; and all screen shafts are in transmission connection. The fluctuating screen solves the technical problem that the fluctuating screen in the prior art cannot screen material granules evenly and is poor in screening effect. The fluctuating screen provided by the utility model can screen the material granules evenly, is excellent in screening effect, high in screening efficiency and low in noise, and can be an upgraded product of screening equipment of thermal power plants.

Description

The fluctuation sieve

Technical field

The utility model relates to the screening plant technical field, particularly a kind of fluctuation sieve that is used to sieve the higher solid material of water content.

Background technology

In the thermal power plant, raw coal all needs to sieve and break process before entering into boiler.At present, the employed screening plant in thermal power plant mostly is rotary screen, roller picker and various vibratory sieve greatly, these screening plant compass screen surface serious wear, and screening efficiency is low, and service life is short, and noise is big, has seriously influenced staff's physical and mental health.

Based on above deficiency, those skilled in the art have developed a kind of fluctuation sieve, this fluctuation sieve has the screening efficiency height, advantages such as noise is little, its structure is as shown in Figure 1: parallelly in casing be provided with some sieves axle 1a, some peach shapes sieve sheet 2a all are installed on the every sieve axle 1a, and every sieve axle 1a goes up between the major axis of two adjacent sieve sheet 2a has certain included angle, the interlaced settings of sieve sheet 2a on adjacent two sieve axle 1a.The mesh size of the screen cloth of the variation of respectively sieving sheet 2a formation of the fluctuation sieve of this kind structure is inhomogeneous, rotation variation along with sieve axle 1a, as shown in Figure 1, gap between some sieve sheet 2a is little, and the gap between some sieve sheet 2a is big, and the material 4 that just has bulk between two bigger sieve sheet 2a of gap falls with fines, the feasible material particles that sieves out is inhomogeneous, screening effect is not obvious, does not reach the purpose of screening, has restricted the application of fluctuation sieve.

The utility model content

Based on above deficiency, technical problem to be solved in the utility model provides a kind of fluctuation sieve, and the mesh that the screen cloth of the variation of respectively sieving sheet formation is sieved in this fluctuation is consistent constantly, and the material particles that sieves out is even, and screening effect is good.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of fluctuation sieve, comprise casing, described casing is provided with charging aperture and discharging opening, the interior parallel some sieves axles that are provided with of described casing all are equipped with some sieve sheets on the every described sieve axle successively, and described sieve sheet is provided with major axis and minor axis, the described sieve sheet of the same order on each described sieve axle is all in the same plane, and the angle between the major axis of two the described sieve sheets in the same plane on adjacent two described sieve axles is 90 °; Each described sieve through-drive connects.

Wherein, the described casing that is positioned at described charging aperture place is provided with flashboard, and described flashboard is driven by power set.

Wherein, have an inclination angle between plane that each described sieve axle is coexisted and the horizontal plane, described inclination angle is 10 °～30 °.

Wherein, the angle between the major axis of two the adjacent described sieve sheets on the same described sieve axle is 45 °

The beneficial effects of the utility model are: the utility model fluctuation sieve comprises casing, the interior parallel some sieves axles that are provided with of casing, on the every sieve axle some sieve sheets are installed successively all, the sieve sheet of the same order on each sieve axle is all in the same plane, and the angle between the major axis of two the sieve sheets in the same plane on adjacent two sieve axles is 90 °.Because it is all in the same plane that each sieve axle is gone up the sieve sheet of same order, as shown in Figure 2, each the big or small of sieve aperture of sieving the screen cloth of sheet formation is consistent constantly, thereby guaranteed that the material particles size of sieving out is even, can improve the screening effect of fluctuation sieve with greater than the separating of the material strictness of a certain granularity requirements.

In sum, it is inhomogeneous that the utility model fluctuation sieve has solved the sieve screening material particles that fluctuates in the prior art, the technical problem of screening effect difference.The utility model fluctuation sieve screening material particles is even, and screening effect is good, and the screening efficiency height, and noise is little, can be rated as the renewal product of thermal power plant screening plant.

Description of drawings

Fig. 1 is the sieve axle of fluctuation sieve in the background technology, the structural representation of sieve sheet;

Fig. 2 is the sieve axle of the utility model fluctuation sieve, the structural representation of sieve sheet;

Fig. 3 is the fundamental diagram of the utility model fluctuation sieve;

Fig. 4 is the structural representation of the sieve sheet of the utility model fluctuation sieve;

Among the figure: 1a, sieve axle, 1b, sieve axle, 2a, sieve sheet, 2b, sieve sheet, 21, sieve sheet body, 22, axis hole, 23, keyway, 3, flashboard, 4, material, 5, electric pushrod, 6, casing, 61, charging aperture, 62, the coarse fodder outlet, 63, the fines outlet.

The specific embodiment

Below in conjunction with drawings and Examples, further set forth the utility model.

Shown in Fig. 2, Fig. 3 and Fig. 4 were common, a kind of fluctuation sieve comprised casing 6, and casing 6 is provided with charging aperture 61, coarse fodder outlet 62 and fines outlet 63.Parallel some sieves 1b that are provided with in the casing 6 by chain drive, are rotated by same total motor-driven between each sieve axle 1b synchronously, and has an inclination angle c between each sieve axle plane that 1b coexisted and the horizontal plane, inclination angle c is 10 °～30 °, and present embodiment is preferably 15 °, is convenient to the discharge of bulk materials.On the every sieve axle 1b some sieve sheet 2b are installed successively all, sieve sheet 2b is peach shape or olive shape sieve sheet, have major axis and minor axis, sieve sheet 2b comprises peach shape or olivary sieve sheet body 21, the center of sieve sheet body 21 has axis hole 22, the edge of axis hole 22 has the keyway 23 that is used to install flat key, and sieve sheet 2b is fixed on the sieve axle 1b by flat key, and along with sieve axle 1b rotates synchronously.The sieve sheet 2b of the same order on each sieve axle 1b is all in the same plane, angle between the major axis of two sieve sheet 2b in the same plane on adjacent two sieve axle 1b is 90 °, and the angle between the major axis of two the adjacent sieve sheet 2b on the same sieve axle 1b is 45 °.

As shown in Figure 3, the casing 6 that is positioned at charging aperture 61 places is provided with flashboard 3, and flashboard 3 is driven by electric pushrod 5, is used to control opening or closing of charging aperture 61.The motor of electric pushrod 5 can also adopt cylinder to replace, but because cylinder operation needs source of the gas, concerning some occasions, source of the gas is convenient and safety not as power supply, so the utility model is preferably electric pushrod.

As shown in Figure 3, operation principle of the present utility model is as follows:

When the fluctuation riddler did, the kinetic energy of total motor output passed to each sieve axle 1b by chain, drove each sieve axle 1b and rotated synchronously, and each sieves sheet 2b along with sieve axle 1b rotates in the same way, makes material 4 produce a corrugated movement locus.Sieved sheet 2b greater than the material of granularity requirements and seethed direction motion, export 62 from coarse fodder and discharge and fall into disintegrating machine and carry out fragmentation to coarse fodder outlet 62; Mesh of the screen cloth that forms from each sieve sheet 2b less than the material of granularity requirements falls, and exports 63 from fines and discharges and be defeated by boiler and be used for generating, thereby finish the sieving technology of material.

The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection domain of the present utility model.

Claims

1. fluctuation is sieved, comprise casing, described casing is provided with charging aperture and discharging opening, the interior parallel some sieves axles that are provided with of described casing, on the every described sieve axle some sieve sheets are installed successively all, described sieve sheet is provided with major axis and minor axis, it is characterized in that, the described sieve sheet of the same order on each described sieve axle is all in the same plane, and the angle between the major axis of two the described sieve sheets in the same plane on adjacent two described sieve axles is 90 °; Each described sieve through-drive connects.

2. fluctuation sieve according to claim 1 is characterized in that the described casing that is positioned at described charging aperture place is provided with flashboard, and described flashboard is driven by power set.

3. fluctuation sieve according to claim 1 and 2 is characterized in that, has an inclination angle between plane that each described sieve axle is coexisted and the horizontal plane.

4. fluctuation sieve according to claim 3 is characterized in that described inclination angle is 10 °～30 °.

5. fluctuation sieve according to claim 3 is characterized in that, the angle between the major axis of two the adjacent described sieve sheets on the same described sieve axle is 45 °.