CN210523027U

CN210523027U - Rotary screening machine

Info

Publication number: CN210523027U
Application number: CN201921605782.6U
Authority: CN
Inventors: 孙学工; 张石英; 齐铁军; 马元超
Original assignee: Henan Lanji Machinery Manufacturing Co Ltd
Current assignee: Henan Lanji Machinery Manufacturing Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-15
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a rotary screening machine, which comprises a rotary feeding mechanism and an N-level screen cylinder, n is more than or equal to 2, the screen cylinders are horizontally arranged, the N-stage screen cylinders are coaxially sleeved outwards step by step, the mesh number of the screen of the N-1-stage screen cylinder is less than that of the N-stage screen cylinder, the axial length of the N-1-stage screen cylinder is greater than that of the N-stage screen cylinder, the rotary feeding mechanism comprises a spiral central feeding shaft and a secondary feeding ring, the central feeding shaft is coaxially and rotatably arranged inside the first-stage screen cylinder, the secondary feeding ring is coaxially and rotatably arranged in an area between adjacent screen cylinders, the axial lengths of the central feeding shaft and the secondary feeding ring are equal to those of the screen cylinders adjacent to the outer side of the central feeding shaft and the secondary feeding ring, the rotary screening machine can carry out multi-stage screening on materials, the feeding speed of the materials in the screen cylinders is controllable, and the reliable screening result is ensured.

Description

Rotary screening machine

Technical Field

The utility model relates to a screening equipment technical field specifically is a rotary screen extension.

Background

When classifying the material, need sieve according to the particle diameter of material, current screening mechanism includes the fixed sieve, reciprocating sieve and drum sieve, use the drum sieve as the example, current drum sieve adopts the cylinder to roll, it rolls to drive the material inside the cylinder, thereby make the material by the cylinder screening fast, but current drum sieve only has one-level cylinder, the during operation only can carry out one-level screening to the material, can not carry out multistage screening to the material according to the demand, and when carrying out the equipment debugging, need make cylinder and horizontal plane have certain inclination, thereby make the material carry out axial feed under the action of gravity, its feed speed is uncontrollable, cause the screening result to be difficult to control.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a rotary screening machine, can carry out multistage screening to the material, and the material is controllable at the inside feed rate of a screen cloth section of thick bamboo, and it is reliable to guarantee that the screening result is reliable, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a rotary screening machine comprises a rotary feeding mechanism and N-stage screen drums, wherein N is more than or equal to 2, the screen drums are horizontally arranged, the N-stage screen drums are coaxially sleeved outwards step by step, the screen mesh number of the N-1-stage screen drum is smaller than that of the N-stage screen drum, and the axial length of the N-1-stage screen drum is larger than that of the N-stage screen drum;

the rotary feeding mechanism comprises a spiral central feeding shaft and a secondary feeding ring, the central feeding shaft is coaxially and rotatably arranged inside the first-stage screen cylinder, the secondary feeding ring is coaxially and rotatably arranged in a region between the adjacent screen cylinders, and the axial lengths of the central feeding shaft and the secondary feeding ring are equal to those of the screen cylinders adjacent to the outer sides of the central feeding shaft and the secondary feeding ring.

As the utility model discloses an optimal technical scheme, the screen cloth section of thick bamboo left end of N level flushes, and the screen cloth section of thick bamboo left end of first order sets up the feeder hopper rather than cylindrical inner chamber intercommunication, is convenient for directly annotate the material through the feeder hopper in the inside cavity of inlayer screen cloth section of thick bamboo.

As an optimal technical scheme of the utility model, the outside below of a screen cloth section of thick bamboo is from the fixed stripper that sets up the N level in a right side to a left side, and the stripper length of the N level equals the axial length difference of the N level and the N-1 level screen cloth section of thick bamboo, and the left end of the N level stripper and the right-hand member parallel and level of the N-1 level screen cloth section of thick bamboo, collect the material that corresponds screen cloth section of thick bamboo screening through the stripper, be convenient for collect the material of the different levels after the screening.

As the utility model discloses a preferred technical scheme, the stripper slope is arranged, the left end of stripper is higher than the right-hand member, the inclination of stripper is 3-8, helps the material on stripper surface to one side gathering under the action of gravity.

As an optimal technical scheme of the utility model, rotatory feed mechanism still includes the power shaft parallel with a screen cloth section of thick bamboo axis and rotate the installation, the tip of power shaft sets up the motor, center feed shaft and secondary feed ring are connected with the power shaft transmission through drive mechanism respectively, and through power transmission, drive center feed shaft and secondary feed ring and rotate.

As an optimal technical scheme of the utility model, center feed shaft and secondary feed ring tip are coaxial fixed suit ring gear respectively, ring gear outside meshing installation gear, the coaxial fixed mounting band pulley of gear side, the power shaft corresponds the coaxial fixed mounting band pulley of position department with the ring gear, be connected through the drive belt between the band pulley of the outside band pulley of power shaft and gear side.

As a preferred technical scheme of the utility model, the center feed shaft is spiral push rod, secondary feed ring is spiral annular structure, and secondary feed ring's gyration external diameter equals rather than the screen cloth section of thick bamboo internal diameter in the next-door neighbour outside, secondary feed ring is inside to set up the stiffener, the stiffener is parallel with secondary feed ring's axis, through increasing the stiffener, promotes secondary feed ring's self rigidity.

Compared with the prior art, the beneficial effects of the utility model are that: this rotary screen extension adopts the inside rotary feeding mechanism who installs the same progression of multistage fixed screen cloth section of thick bamboo, promote the material through rotary feeding mechanism and feed along the axial in screen cloth section of thick bamboo is inside, through the rotational speed of controlling rotary feeding mechanism, control material feed rate, thereby guarantee the screening effect, and the mesh number of multistage screen cloth section of thick bamboo is different, the mesh number increases in proper order from inside to outside, and from inside to outside length diminishes in proper order, help the hierarchical screening of multistage material, and can not cause the interference of unloading each other, be convenient for sieve the grading of back different grade materials.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention;

FIG. 3 is a schematic view of the rotary feeding mechanism of the present invention;

FIG. 4 is a schematic view of the center feed shaft of the present invention;

fig. 5 is a schematic view of the secondary feed ring of the present invention.

In the figure: 1 screen cylinder, 2 rotary feeding mechanisms, 201 central feeding shaft, 202 secondary feeding ring, 203 motor, 204 power shaft, 205 transmission belt, 3 discharging plate and 4 feeding hopper.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a rotary screening machine comprises a rotary feeding mechanism 2 and N-stage screen cylinders 1, wherein N is more than or equal to 2, the screen cylinders 1 are horizontally arranged, the N-stage screen cylinders 1 are coaxially sleeved outwards step by step, the screen mesh number of the N-1-stage screen cylinder 1 is smaller than that of the N-stage screen cylinder 1, and the axial length of the N-1-stage screen cylinder 1 is greater than that of the N-stage screen cylinder 1;

the rotary feed mechanism 2 comprises a spiral central feed shaft 201 and a secondary feed ring 202, the central feed shaft 201 is coaxially and rotatably arranged inside the first-stage screen cylinder 1, the secondary feed ring 202 is coaxially and rotatably arranged in the area between the adjacent screen cylinders 1, and the axial lengths of the central feed shaft 201 and the secondary feed ring 202 are equal to those of the immediately adjacent screen cylinders 1 outside the central feed shaft 201 and the secondary feed ring 202.

The 1 left end of a screen cloth section of thick bamboo of N level flushes, and the 1 left end of a screen cloth section of thick bamboo of first order sets up the feeder hopper 4 rather than cylindrical inner chamber intercommunication, is convenient for directly annotate the material through feeder hopper 4 in the cavity of 1 inside of an inlayer screen cloth section of thick bamboo.

The fixed stripper 3 that sets up N level from right side to left side in the outside below of a screen cloth section of thick bamboo 1, and 3 length of the stripper of Nth level equals the axial length difference of Nth level and an N-1 level screen cloth section of thick bamboo 1, and the left end of an Nth level stripper 3 and the right-hand member parallel and level of an N-1 level screen cloth section of thick bamboo 1, collect the material that a screen cloth section of thick bamboo 1 was sieved through stripper 3, be convenient for collect the material of the different levels after the screening.

3 slopes of stripper are arranged, and the left end of stripper 3 is higher than the right-hand member, and the inclination of stripper 3 is 3-8, helps the material on 3 surfaces of stripper to one side gathering under the action of gravity.

The rotary feeding mechanism 2 further comprises a power shaft 204 which is parallel to the axis of the screen cylinder 1 and is rotatably mounted, a motor 203 is arranged at the end of the power shaft 204, the central feeding shaft 201 and the secondary feeding ring 202 are respectively in transmission connection with the power shaft through a transmission mechanism, and the central feeding shaft 201 and the secondary feeding ring 202 are driven to rotate through power transmission.

The end parts of the central feeding shaft 201 and the secondary feeding ring 202 are respectively and coaxially fixed with a gear ring in a sleeved mode, a gear is meshed with the outer portion of the gear ring, a belt wheel is coaxially and fixedly arranged on the side edge of the gear, a belt wheel is coaxially and fixedly arranged at the position, corresponding to the gear ring, of the power shaft 204, and the belt wheel on the outer portion of the power shaft 204 is connected with the belt wheel on the side edge of the gear through a.

The central feeding shaft 201 is a spiral push rod, the secondary feeding ring 202 is a spiral annular structure, the rotating outer diameter of the secondary feeding ring 202 is equal to the inner diameter of the screen cylinder 1 which is adjacent to the outer side of the secondary feeding ring 202, a reinforcing rod is arranged in the secondary feeding ring 202 and is parallel to the axis of the secondary feeding ring 202, and the rigidity of the secondary feeding ring 202 is improved by adding the reinforcing rod.

When in use: the material is filled into a cavity inside the first-stage screen cylinder 1 through the feed hopper 4, namely the material is filled into the screen cylinder 1 which is closest to the axis in the middle, at the moment, the motor 203 drives the power shaft 204 to rotate, the transmission is realized through the transmission mechanism, namely, the two belt wheels are transmitted through the transmission belt 205, then the belt wheels and the gears synchronously rotate, the gears are meshed with the gear rings to drive the central feeding shaft 201 and the secondary feeding ring 202 to rotate, and in operation, the feeding speed of the raw material passing through the screen cylinder 1 is adjusted by adjusting the transmission ratio among the power shaft 203, the central feeding shaft 201 and the secondary feeding ring 202, so that the screening effect of each stage of screen cylinders 1 is ensured;

the inside helical structure of center feed shaft 201 promotes the material and moves right along the axial in sieve screen section of thick bamboo 1 is inside, in the motion process, the material that is less than first order sieve screen section of thick bamboo 1 aperture drops to the sieve screen section of thick bamboo 1 of next stage under the action of gravity in the next stage sieve screen section of thick bamboo 1, pivoted secondary feed ring 202 drives the material and moves right along the axial, the material that is less than this level sieve screen section of thick bamboo 1 aperture at this moment continues to drop to next stage sieve screen section of thick bamboo 1, and be greater than the continuation along axial motion in aperture, until moving to the rightmost end, drop to corresponding stripper 3 surfaces from the right-hand member, and the material that outmost sieve screen section of thick bamboo 1 sieves out drops to corresponding stripper 3 surfaces equally, thereby accomplish the collection of different grade materials.

The utility model discloses a multistage fixed screen cloth section of thick bamboo 1 inside rotates the rotatory feed mechanism 2 of the equal progression of installation, promote the material through rotatory feed mechanism 2 and feed at screen cloth section of thick bamboo 1 inside along the axial, through the rotational speed of controlling rotatory feed mechanism 2, control material feed speed, thereby guarantee the screening effect, and the mesh number of multistage screen cloth section of thick bamboo 1 is different, mesh number increases in proper order to outer from interior, and from interior length diminishes in proper order to outer, help the hierarchical screening of multistage material, and can not cause the interference of unloading each other, be convenient for sieve the grading of back different grade materials.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A rotary screening machine is characterized in that: the automatic feeding device comprises a rotary feeding mechanism (2) and N-level screen cylinders (1), wherein N is more than or equal to 2, the screen cylinders (1) are horizontally arranged, the N-level screen cylinders (1) are sleeved outwards and coaxially step by step, the mesh number of the N-1 level screen cylinders (1) is smaller than that of the N-level screen cylinders (1), and the axial length of the N-1 level screen cylinders (1) is larger than that of the N-level screen cylinders (1);

the rotary feeding mechanism (2) comprises a spiral central feeding shaft (201) and a secondary feeding ring (202), the central feeding shaft (201) is coaxially and rotatably installed inside the first-stage screen cylinder (1), the secondary feeding ring (202) is coaxially and rotatably installed in a region between adjacent screen cylinders (1), and the axial lengths of the central feeding shaft (201) and the secondary feeding ring (202) are equal to those of the screen cylinders (1) which are adjacent to the outer sides of the central feeding shaft.

2. The rotary screen apparatus of claim 1, wherein: the left end of the screen cylinder (1) of the N level is flush, and the left end of the screen cylinder (1) of the first level is provided with a feed hopper (4) communicated with a cylindrical inner cavity of the screen cylinder.

3. The rotary screen according to claim 2, wherein: the outside below of a sieve net section of thick bamboo (1) is from right side to left side fixed and is set up stripper (3) of N level, and stripper (3) length of Nth level equals the axial length difference of Nth level and an N-1 level sieve net section of thick bamboo (1), and the left end of an Nth level stripper (3) and the right-hand member parallel and level of an N-1 level sieve net section of thick bamboo (1).

4. The rotary screen machine according to claim 3, wherein: the discharging plate (3) is obliquely arranged, the left end of the discharging plate (3) is higher than the right end of the discharging plate, and the inclination angle of the discharging plate (3) is 3-8 degrees.

5. The rotary screen apparatus of claim 1, wherein: the rotary feeding mechanism (2) further comprises a power shaft (204) which is parallel to the axis of the screen drum (1) and is rotatably mounted, a motor (203) is arranged at the end of the power shaft (204), and the central feeding shaft (201) and the secondary feeding ring (202) are in transmission connection with the power shaft through a transmission mechanism respectively.

6. The rotary screen machine according to claim 5, wherein: the end parts of the central feeding shaft (201) and the secondary feeding ring (202) are respectively and coaxially and fixedly sleeved with a gear ring, a gear is meshed with the outside of the gear ring, a belt wheel is coaxially and fixedly arranged on the side edge of the gear, a belt wheel is coaxially and fixedly arranged at the position corresponding to the gear ring on the power shaft (204), and the belt wheel on the outside of the power shaft (204) is connected with the belt wheel on the side edge of the gear through a transmission belt (205).

7. The rotary screen machine according to any one of claims 1 to 6, characterized in that: the central feeding shaft (201) is a spiral push rod, the secondary feeding ring (202) is of a spiral annular structure, the rotary outer diameter of the secondary feeding ring (202) is equal to the inner diameter of the screen cylinder (1) which is adjacent to the outer side of the secondary feeding ring, and a reinforcing rod is arranged in the secondary feeding ring (202) and is parallel to the axis of the secondary feeding ring (202).