CN201211516Y

CN201211516Y - Drum screen

Info

Publication number: CN201211516Y
Application number: CNU2008201193548U
Authority: CN
Inventors: 李志伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-15
Filing date: 2008-06-15
Publication date: 2009-03-25
Anticipated expiration: 2018-06-15

Abstract

The utility model relates to a device for screening solid materials. A revolving screen, a roller of which is connected with a power device to form a revolving structure; the roller has a feeding port, a screen hole and a material returning port; an inner wall of the roller is provided with a spiral feeding mechanism; the outside of the roller is provided with a shell; and the shell is provided with a discharge port. After the solid materials which require screening enter from an inlet of the roller, the solid materials on an operating surface of the inner wall of the roller are fed and screened by the spiral feeding mechanism under the rotation function of the roller, thereby improving screening efficiency of the solid materials, and contributing to reduction of error ratio.

Description

A kind of rotary screen

Technical field

The utility model relates to a kind of device that sieves solid material, more particularly, relates to a kind of device that uses cylinder rotating mechanism screening solid material.

Background technology

Often need to use the screen cloth screening through solid materials such as the coal cinder of crusher in crushing, ores.The solid material of water was sprayed in traditional plain weave mesh screen and ripple mesh screen easy deformation or breakage under the bump of solid material, extruding, especially screening, was easy to take place sticking stifled problem.In order to solve the problem that prior art exists, people have invented multiple spiral screen.As, " spiral screen " that China Patent No. 200620077880.3 proposes.Though the technical scheme of this invention has been used screw drive mechanism, " frame is installed a unit along the stepped setting of the direction of motion of material on each grade ladder ".But " ladder " modular construction more complicated in this patented technology scheme is unfavorable for reducing breakdown rate.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model provides a kind of rotary screen, and it uses screw propulsion mechanism, helps to improve the operating efficiency of rotary screen.

The purpose of this utility model is achieved in that a kind of rotary screen, and cylinder connects power set and constitutes rotational structure, and cylinder has charging aperture, sieve aperture and material returned mouth, and inner wall of rotary drum has screw propulsion mechanism, and cylinder has shell outward, and discharging opening is arranged on the shell.

On the basis of technique scheme, the utility model also has following further scheme:

Have at least 2 cylinders to constitute the cascaded structure cylinder.

Between the described cascaded structure cylinder connecting cylinder is arranged, the connecting cylinder inwall has flight.

Screw propulsion mechanism has at least 6 screw rods to surround, and screw rod and roller shelves constitute turntable.

Screw rod connects power set through transmission mechanism.

Between described screw rod and the screw rod spacer rod is arranged.

Described screw propulsion mechanism is the screw thread of inner wall of rotary drum.

Described cylinder inlet has feed mechanism.

Described feed mechanism is spiral conveying mechanism or belt conveyor.

Advantage of the present utility model is as follows:

Constitute rotational structure owing to cylinder connects power set, cylinder has charging aperture, sieve aperture and material returned mouth, and inner wall of rotary drum has screw propulsion mechanism, and cylinder has shell outward, and discharging opening is arranged on the shell; After the solid material that needs screening entered from the porch of cylinder, under the cylinder turning effort, the solid material on the inner wall of rotary drum working face can be advanced by screw propulsion mechanism, and solid material obtains screening in by the process of the propelling of screw propulsion mechanism; The solid material that is sized is exported from discharging opening through the sieve aperture of cylinder, and the solid material that can not sieve is discharged from material returned mouth.The contrast prior art, the utility model not only can improve the screening efficiency of solid material, and helps reducing fault rate.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the exploded view of the utility model part;

Fig. 3 is the roller frame schematic diagram that screw rod surrounds;

Fig. 4 is the structural representation of connecting cylinder;

Fig. 5 is the structural representation of spiral tube.

The specific embodiment

Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail:

In conjunction with Fig. 1, referring to Fig. 2 and Fig. 3.Cylinder is surrounded by 20 or more screw rods 8, and screw propulsion mechanism is a screw rod 8, and promptly described screw propulsion mechanism has at least 6 screw rods 8 to surround.Screw rod 8 is installed on the roller shelves 200 and surrounds circular drum, and the screw thread position on the screw rod 8 constitutes the sieve aperture of cylinder; On the screw rod 8 screw thread is arranged, screw rod 8 constitutes turntable by bearing and roller shelves 200.Cylinder is by motor-driven, and during the cylinder rotation, solid material can obtain advancing under the effect of screw thread on the screw rod 8.Between described screw rod 8 and the screw rod 8 spacer rod is arranged, spacer rod is a circle polished rod 7, and circle polished rod 7 can be fixed on the roller shelves 200 by welding manner or bolt connecting mode, and perhaps round polished rod 7 constitutes turntable by bearing and roller shelves 200.There is flange at roller shelves 200 and connecting cylinder 4 two ends.2 or 3 cylinders are cascaded constitutes the cascaded structure cylinder, between the described cascaded structure cylinder connecting cylinder 4 is arranged, and connecting cylinder 4 inwalls have flight 202.Connecting cylinder 4 is fixed on the cylinder by flange.Cylinder has shell 2 outward.In order to prevent that cylinder from being blocked by solid material, having between shell 2 and the cylinder generally, to have 2-19 centimetres gap by by the passage of sieve material between shell 2 and the cylinder.There is charge door 1 top of shell 2 one ends, and charging aperture is the inlet of cylinder left end, and charge door 1 communicates through the inlet of guiding tube 9 with the cylinder left end, and guiding tube 9 connects roller shelves 200 by flange.One side of shell 2 has discharging opening 6, and material returned mouth is positioned at the right-hand member of terminal cylinder, and each cylinder right-hand member all has connecting cylinder 4, connecting cylinder 4 help to discharge in the terminal cylinder can not sub-sieve solids.2 shells 2 link together by base 12.In conjunction with Fig. 1, Fig. 2, referring to Fig. 4.Cylinder is driven by motor 11, and motor 11 connects main shaft 14 by belt gear or gear reduction unit, and belt gear is made up of belt 13, big belt pulley 15 and small belt pulley.One end of main shaft 14 and the bearing on the shell 2 constitute and can be in transmission connection, and the tailstock 5 on the other end of main shaft 14 and the base 12 constitutes and can be in transmission connection.Main shaft 14 is fixed on the axis hole 400 of connecting cylinder 4 by key pin.Sieve aperture on the cylinder is the screw thread on the screw rod 8; The sieve aperture of cascaded structure cylinder has the branch of thickness, and screw rod 8 pitch on the previous stage cylinder are less than screw rod 8 pitch on the one-level cylinder of back.

On above-mentioned embodiment basis, the utility model also has following further embodiment:

Screw rod 8 connects power set through transmission mechanism.Gear 201 is arranged on the screw rod 8, ring gear 3 be enclosed within on the roller shelves 200 and engagement screws 8 on gear 201; Ring gear 3 is fixed on the base 12 by connector; When the cylinder that surrounds when screw rod 8 was driven by motor 11, screw rod 8 was rotatable.

Described cylinder inlet has feed mechanism.Described feed mechanism is spiral conveying mechanism or belt conveyor.Spiral conveying mechanism is the spiral section 10 that is fixed on the main shaft 14, and spiral section 10 enters guiding tube 9, and the solid material that guiding tube 9 helps to prevent to enter in the cylinder flows backwards.Because when screw rod transmission mechanism transported some solid material, the wearing and tearing of thread segment 10 were bigger, feed mechanism also can use belt conveyor etc.When feed mechanism was belt conveyor, the driving-belt of belt conveyor was positioned at the below of charge door 1, and the driving-belt of belt conveyor stretches in the cylinder.

Need to prove that cylinder and screw propulsion mechanism can also have following mode to implement:

Described screw propulsion mechanism is the screw thread 503 of inner wall of rotary drum.Cylinder is the spiral tube 500 of coherent perforation 502, and spiral tube 500 end faces have flange and positioning shaft hole 501, and positioning shaft hole 501 is used to pass through main shaft 14.Sieve aperture on the cylinder is the through hole 502 on the spiral tube 500.Spiral tube 500 inwalls have screw thread 503, and through hole 502 is between twice screw thread 503.When the spiral tube 500 as cylinder rotated, solid material can obtain screening in by screw thread 503 progradations.When cylinder was the cascaded structure cylinder, the sieve aperture on the previous stage spiral tube 500 was less than the sieve aperture on the back one-level spiral tube 500.

Claims

1, a kind of rotary screen is characterized in that, cylinder connects power set and constitutes rotational structure, and cylinder has charging aperture, sieve aperture and material returned mouth, and inner wall of rotary drum has screw propulsion mechanism, and cylinder has shell (2) outward, and discharging opening (6) is arranged on the shell (2).

2, a kind of rotary screen according to claim 1 is characterized in that, has at least 2 cylinders to constitute the cascaded structure cylinder.

3, a kind of rotary screen according to claim 2 is characterized in that, connecting cylinder (4) is arranged between the described cascaded structure cylinder, and connecting cylinder (4) inwall has flight (202).

4, a kind of rotary screen according to claim 1 is characterized in that, described screw propulsion mechanism has at least 6 screw rods (8) to surround, and screw rod (8) constitutes turntables with roller shelves 200.

5, a kind of rotary screen according to claim 4 is characterized in that, described screw rod (8) connects power set through transmission mechanism.

6, a kind of rotary screen according to claim 4 is characterized in that, between screw rod (8) and the screw rod (8) spacer rod is arranged.

7, a kind of rotary screen according to claim 1 is characterized in that, described screw propulsion mechanism is the screw thread (503) of inner wall of rotary drum.

8, a kind of rotary screen according to claim 1 is characterized in that, described cylinder inlet has feed mechanism.

9, a kind of rotary screen according to claim 8 is characterized in that, described feed mechanism is spiral conveying mechanism or belt conveyor.