CN200977504Y - Drum sieve - Google Patents

Abstract

The utility model is a conical screen. The head of the roller is made of a front steel ring, a gear ring and a circular orbit are arranged on the exicrcle of the front steel ring, the middle section of the roller is constituted of rolled section frame, a screen sheet is arrannged in the upper part of the rolled section frame, the back section of the rolled is constituted of back steel ring, a circular orbit is arrannged on the exicrcle of the back steel ring, the front steel ring and the back steel ring are connected with the two ends of the rolled section frame through the flange collar, the roller is arranged slantwise on the seat, a forward riding wheel and a backward riding roll are also set on the seat, the forward riding wheel and the backward riding roll are imbedded to the circular orbits of the backward steel exicrcle respectively, the positioning wheel holds and supports the lateral border of the circular orbit on the front steel exicrcle, the driving device comprises an electric motor, a joint slack, a reducing unit and a pinion gear, the pinion gear is geared with the gear ring, the material inlet device is constituted of the inlet chute and the round baffle plate, a fine material outlet and a rough material outlet are arranged respectively in the middle part and the back part of the seat. The utility model has the advantages of compact conformation, large driving power and production output, no vibration and jamming of coal, and thorough screening, meeting the need of power plant production.

Description

Rotary screen

Technical field

The utility model relates to the auxiliary device in fields such as power plant, coal, building materials, chemical industry, the equipment of screening coal that particularly a kind of power plant uses, specifically a kind of rotary screen.

Background technology

The subject matter that existing rotary screen exists is:

Complex structure, the dismounting inconvenience, easy-maintaining not, the intermediate link of transmission is many, and power loss is big, and output is little, and it is not enough to exert oneself, and the efficient of screening coal is low, galloping, vibration is big, and noise is big, and the easy putty of sieve sieves not thoroughly, does not reach the instructions for use of power plant.

The utility model content

For solving the problem that existing rotary screen exists, the purpose of this utility model provides a kind of rotary screen that can satisfy power plant's production needs, its compact conformation, and the transmission amount is big, and it is big to exert oneself, and does not vibrate, and chute blockage sieves thoroughly.

For achieving the above object, the utility model is by the following technical solutions:

A kind of rotary screen has cylinder, drive unit, feed arrangement, support, and a Duan Youqian steel ring of described cylinder constitutes, and gear ring and circular orbit are installed on the cylindrical of this preceding steel ring abreast, and the rear end of preceding steel ring is connected with ring flange;

The stage casing of cylinder is made of structural steel frame, and this structural steel frame is welded by two ends ring flange and many shaped steel, is equipped with the sieve sheet on the structural steel frame;

The rear of cylinder is made of the back steel ring, on the cylindrical of this back steel ring circular orbit is installed, and the front end of back steel ring is connected with ring flange;

Steel ring, back steel ring are connected with the two ends ring flange of structural steel frame by ring flange respectively before described;

Cylinder tilts and to be installed on the described support, the front end of support be equipped with a pair of before support roller, the rear end of support is equipped with a pair of back support roller, described before support roller embed before in the circular orbit of steel ring cylindrical, described back support roller embeds in the circular orbit of back steel ring cylindrical;

Drive unit is made up of motor, shaft coupling, reductor, pinion, and the line shaft of motor is connected with the power shaft of reductor by shaft coupling, and the output shaft of reductor is connected with pinion is coaxial, pinion and the engagement of described gear ring;

Feed arrangement is made up of charging chute and circle baffle plate, and the circle baffle plate is welded on the end of charging chute; The charging chute stretches in the head section nozzle of cylinder;

Described support middle part is provided with the fines outlet, and the support rear portion is provided with the coarse fodder outlet.

The rear side of the circular orbit before described on the steel ring cylindrical is equipped with locating wheel; This locating wheel is replaced on the lateral edges of this circular orbit.

Described sieve sheet is made by stainless (steel) wire or shaped steel.

Owing to adopt technique scheme, the utlity model has following advantage:

One. compact conformation, few, the easy disassembling, easy to maintenance of amount of parts.

Two. transmission link is simple, the transmission amount is big, exert oneself big, the efficient of screening coal height.

Three. running steadily, do not vibrate, noise is little.

Four. chute blockage, screening are not thoroughly.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the half sectional view of Fig. 1 intermediate roll.

Fig. 4 is the side view of Fig. 3.

The specific embodiment

Number in the figure

1. pinion 2. hoods 3. support rollers 4. charging chutes

5. steel ring 701. ring flanges before gear ring 6. circular orbits 7.

8. structural steel frame 801. ring flanges 802. ring flanges

9. steel ring 901. ring flanges after

10. circular orbit 11. sieves sheets 12. locating wheels

13. reductor 14. shaft couplings 15. motor 16. supports

17. circle baffle plate 18. fineves export 19. coarse fodders and export 20. front end-plates

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model is a kind of rotary screen, has cylinder, drive unit, feed arrangement, support.

A Duan Youqian steel ring 7 of cylinder constitutes, and gear ring 5 and circular orbit 6 are installed on the cylindrical of this preceding steel ring 7 abreast, and the rear end of preceding steel ring 7 is connected with ring flange 701.

The stage casing of cylinder is made of structural steel frame 8, and this structural steel frame 8 is welded by two ends ring flange 801,802 and many shaped steel; Be equipped with sieve sheet 11 on the structural steel frame 8, sieve sheet 11 usefulness pressing plates are fixed in the structural steel frame 8.

The rear of cylinder is made of back steel ring 9, and circular orbit 10 is installed on the cylindrical of this back steel ring 9, and the front end of back steel ring 9 is connected with ring flange 901.

Please refer to Fig. 1, Fig. 3, preceding steel ring 7, back steel ring 9 are connected with the two ends ring flange 801,802 of structural steel frame 8 by ring flange 701,901 respectively.

This structure has guaranteed installation accuracy, and stability of rotation does not vibrate, and is convenient to the replacing of consumable accessory sieve sheet 11 again, and sieve sheet 11 is made by stainless (steel) wire, and also available shaped steel is made.

Please refer to Fig. 1, Fig. 2, support 16 can form with welded steel plate, the front end height of support 16, the rear end is low, is ramped shaped, and cylinder is installed on the support 16, the front end of support 16 is equipped with a pair of preceding support roller, the rear end of support 16 is equipped with a pair of back support roller 3, before preceding support roller embeds in the circular orbit 6 of steel ring 7 cylindricals, after back support roller 3 embeds in the circular orbit 10 of steel ring 9 cylindricals as shown in Figure 2.Thereby support is lived cylinder.The support of forward and backward support roller all is welded on the support 16.

Drive unit is made of motor 15, shaft coupling 14, reductor 13, pinion 1, the line shaft of motor 15 is connected with the power shaft of reductor 13 by shaft coupling 14, the output shaft of reductor 13 and 1 coaxial connection of pinion, pinion 1 and described gear ring 5 engagements.

Feed arrangement is made up of charging chute 4 and circle baffle plate 17, and circle baffle plate 17 is welded on the end of charging chute 4, and charging chute 4 stretches in the nozzle of cylinder head section; Circle baffle plate 17 is located in the cylinder, leaves a fixed gap between the front end-plate 20 of circle baffle plate 17 and cylinder.Effect be prevent that material from spilling in the cylinder, flash, chute blockage phenomenon take place.

There is the fines outlet 18 that is welded by steel plate at support 16 middle parts, and there is the coarse fodder outlet 19 that is welded by steel plate at the support rear portion.

The rear side of the circular orbit 6 on the preceding steel ring cylindrical is equipped with locating wheel 12; This locating wheel 12 is replaced on the lateral edges of described circular orbit 6.The support of locating wheel 12 is welded on the support 16.

Operation principle: material (coal) is entered in the cylinder that tilts to install continuously by charging chute 4, screen by rollers roll, fines enters the fines outlet 18 at support middle part, and coarse fodder falls into the coarse fodder outlet 19 at support 16 rear portions above cylinder, finishes the screening process of material.

The power of motor 15 is passed to gear ring 5 by shaft coupling 14, reductor 13, pinion 1, gear ring 5 links together with bolt with cylinder, gear ring 5 drives cylinder and rotates together, forward and backward two pairs of support rollers contact with the circular orbit of cylinder, the picking-up cylinder rotates, the trailing flank of the circular orbit 6 on locating wheel 12 and the preceding steel ring contacts, and prevents from that cylinder from gliding to play positioning action.

Owing to adopted machine finishing parts such as pinion 1, gear ring 5, circular orbit 6, support roller 3, locating wheel 12, guaranteed that cylinder transmission amount is big, running is steady, friction.Hood 2 is equipped with in the outside of cylinder, and hood 2 can form with welded steel plate, and hood 2 and support 16 are connected by bolt.

Claims (3)

1. a rotary screen has cylinder, drive unit, feed arrangement, support, it is characterized in that:

A Duan Youqian steel ring (7) of described cylinder constitutes, and gear ring (5) and circular orbit (6) are installed on the cylindrical of this preceding steel ring (7) abreast, and the rear end of preceding steel ring (7) is connected with ring flange (701);

The stage casing of cylinder is made of structural steel frame (8), and this structural steel frame (8) is welded by two ends ring flange (801,802) and many shaped steel, is equipped with sieve sheet (11) on the structural steel frame (8);

The rear of cylinder is made of back steel ring (9), and circular orbit (10) is installed on the cylindrical of this back steel ring (9), and the front end of back steel ring (9) is connected with ring flange (901);

Steel ring (7), back steel ring (9) are connected with the two ends ring flange (801,802) of structural steel frame (8) by ring flange (701,901) respectively before described;

Cylinder is mounted obliquely within on the described support (16), the front end of support (16) is equipped with a pair of preceding support roller, the rear end of support (16) is equipped with a pair of back support roller (3), in the circular orbit (6) of steel ring (7) cylindrical, described back support roller (3) embedded in the circular orbit (10) of back steel ring (9) cylindrical before support roller embedded before described;

Drive unit is made up of motor (15), shaft coupling (14), reductor (13), pinion (1), the line shaft of motor (15) is connected with the power shaft of reductor (13) by shaft coupling (14), the output shaft of reductor (13) and coaxial connection of pinion (1), pinion (1) and described gear ring (5) engagement;

Feed arrangement is made up of charging chute (4) and circle baffle plate (17), and circle baffle plate (17) is welded on the end of charging chute (4); Charging chute (4) stretches in the head section nozzle of cylinder;

Described support middle part is provided with fines outlet (18), and the support rear portion is provided with coarse fodder outlet (19).

2. rotary screen as claimed in claim 1 is characterized in that: the rear side of the circular orbit (6) before described on the steel ring cylindrical is equipped with locating wheel (12); This locating wheel (12) is replaced on the lateral edges of this circular orbit (6).

3. rotary screen as claimed in claim 1 is characterized in that: described sieve sheet (11) is made by stainless (steel) wire or shaped steel.

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