CN214487727U

CN214487727U - Rotary classifying screen

Info

Publication number: CN214487727U
Application number: CN202120018043.8U
Authority: CN
Inventors: 李全新; 张建中; 王伟伟
Original assignee: Henan Kerunde Machinery Co ltd
Current assignee: Henan Kerunde Machinery Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-10-26
Anticipated expiration: 2031-01-05

Abstract

The utility model belongs to the technical field of feed screening, which comprises a screening box, a roller screen is obliquely arranged in the screening box, the roller screen is fixed on a rotating shaft, the roller screen sequentially comprises a fine screening section, a middle screening section and a coarse screening section along the flow direction of materials, two ends of the rotating shaft are rotatably and hermetically connected with the screening box, one end of the rotating shaft extends out of the screening box and is connected with a variable-frequency speed-reducing motor in a transmission way, a feeding hopper is arranged at the feeding end of the roller screen, one end of the roller screen far away from the feeding end is rotated and is hermetically connected with a rotary assembly, the rotary assembly is fixedly connected with the screening box, a discharging hopper is arranged at the bottom side part of one end of the rotary assembly far away from the roller screen, a gas collecting housing is arranged at the top of the screening box, an exhaust pipe is arranged at the top of the gas collecting housing, and the lower part of the screening box is respectively connected with the fine screening section, the fine hopper, the middle hopper and the coarse hopper correspond to the middle screen section and the coarse screen section. The utility model discloses simple structure, multistage screening is effectual, helps reducing the screening energy consumption, and arranges the material convenience.

Description

Rotary classifying screen

Technical Field

The utility model belongs to the technical field of the fodder screening, specifically, relate to a rotary classifying screen.

Background

The rotary grading sieve is a device which uses rotation as power to sieve materials out of a sieve body so as to sort the materials. The existing rotary classifying screen has unsatisfactory multi-stage screening effect, inconvenient discharge and high energy consumption, and therefore needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a rotary grading sieve, which comprises a sieving box with supporting legs at the bottom, a roller screen is obliquely arranged in the sieving box, the roller screen is fixed on a rotating shaft through a supporting piece, the roller screen sequentially comprises a fine sieve section, a middle sieve section and a coarse sieve section along the material flow direction, the screen mesh diameters of the fine sieve section, the middle sieve section and the coarse sieve section are sequentially increased, two ends of the rotating shaft are rotatably and hermetically connected with the sieving box, one end of the rotating shaft extends out of the sieving box and is in transmission connection with a variable frequency speed reduction motor outside the side wall of the sieving box, the feeding end of the roller screen is provided with a feeding hopper, a blanking pipe of the feeding hopper extends into the roller screen, one end of the roller screen, which is far away from the feeding end, is rotated and is hermetically connected with a rotary assembly, the rotary assembly is fixedly connected with the sieving box, and the bottom side part of one end of the rotary assembly, which is far away from the roller screen, is provided with a discharging hopper, the top of screening case is equipped with the gas collection housing, gas collection housing top is equipped with the exhaust tube, the below of screening case is equipped with respectively with fine screen section, well screen section and the corresponding thin hopper of coarse screening section, well hopper and coarse fodder fill, the top of thin hopper, well hopper and coarse fodder fill is equipped with respectively with the clearance brush of fine screen section, well screen section and coarse screening section flexible contact, and the bottom of thin hopper, well hopper and coarse hopper is equipped with the discharge tube respectively, be equipped with the discharge valve on the discharge tube.

Preferably, the inclination angle of the roller screen is 3-5 degrees, so that the materials can be conveniently and rapidly conveyed in the roller screen, the screening efficiency can be improved, and the reduction of the screening energy consumption is facilitated.

Preferably, a filter screen and an exhaust fan are sequentially arranged in the exhaust pipe along the air flow outflow direction, so that the working environment of the device is improved.

Preferably, the gyration assembly includes ring portion, striker plate and sealing ring, ring portion cover is established outside the cylinder screen cloth, the sealing ring fix in ring portion and with cylinder screen cloth flexible contact, the striker plate is fixed in ring portion and is kept away from the one end of cylinder screen cloth, and the bottom side of striker plate is equipped with the discharge gate, the discharge gate is connected with the row hopper for derive the screening case with the oversize thing of cylinder screen cloth, and guarantee the leakproofness of screening case, in order to reduce the raise dust.

The utility model also comprises other devices or components which can lead the rotary grading screen to be normally used and are conventional technical means in the field; in addition, the device and the component which are not limited in the utility model all adopt the conventional technical means in the field.

The working principle of the utility model is that the variable frequency speed reducing motor can automatically adjust the rotating speed according to the material quantity entering the drum screen, thereby achieving the purpose of energy saving, the inclined drum screen is sequentially provided with the fine screen section, the middle screen section and the coarse screen section along the material flowing direction, thereby ensuring that the fine material, the middle material and the coarse material in the material can be rapidly and stably screened with high efficiency, the oversize material which is not screened out at the tail end of the drum screen is guided into the discharging hopper through the rotary assembly, thereby facilitating the collection and the secondary treatment, the cleaning brushes which are flexibly contacted with the fine screen section, the middle screen section and the coarse screen section are arranged at the top ends of the fine screen hopper, the middle hopper and the coarse hopper, thereby being capable of timely and efficiently cleaning the screen holes of the drum screen, simultaneously, the materials can be prevented from splashing when entering the fine hopper, the middle hopper and the coarse hopper, the fine hopper, the middle hopper and the coarse hopper can play a certain middle storage role, thereby realizing the discontinuous or continuous discharging, through setting up the gas collection encloser, help concentrating the waste gas in the screening case and discharging and administering to be favorable to improving the operation environment.

The beneficial effects of the utility model are that, this device simple structure, multistage screening is effectual, helps reducing the screening energy consumption, and arranges the material convenience.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure in the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a swing assembly according to an embodiment of the present invention.

Fig. 3 is a schematic view of the right side structure of the drum screen of fig. 1.

Detailed Description

The present invention will be described more clearly with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the description herein is only for explaining the present invention, but not for limiting the present invention. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by those skilled in the art without creative efforts should be included in the protection scope of the present invention.

Examples

As shown in figures 1-3, the utility model provides a rotary classifying screen, which comprises a screening box 1 with supporting legs at the bottom, a roller screen 2 is obliquely arranged in the screening box 1, the roller screen 2 is fixed on a rotating shaft 3 through a supporting member, the roller screen 2 sequentially comprises a fine screening section 2-1, a middle screening section 2-2 and a coarse screening section 2-3 along the flow direction of materials, the screen apertures of the fine screening section 2-1, the middle screening section 2-2 and the coarse screening section 2-3 are sequentially increased, two ends of the rotating shaft 3 are rotatably and hermetically connected with the screening box 1, one end of the rotating shaft 3 extends out of the screening box 1 and is in transmission connection with a variable frequency speed reduction motor 4 outside the side wall of the screening box 1, the feeding end of the roller screen 2 is provided with a feeding hopper 5, a blanking pipe of the feeding hopper 5 extends into the roller screen 2, one end of the roller screen 2 far away from the feeding end is rotatably and hermetically connected with a rotary assembly 6, the rotary assembly 6 is fixedly connected with the screening box 1, a discharging hopper 7 is arranged at the bottom of one end, far away from the roller screen 2, of the rotary assembly 6, a gas collecting housing 8 is arranged at the top of the screening box 1, an air exhaust pipe 9 is arranged at the top of the gas collecting housing 8, a fine hopper 10, a middle hopper 11 and a coarse hopper 12 which correspond to the fine screening section 2-1, the middle screening section 2-2 and the coarse screening section 2-3 respectively are arranged below the screening box 1, cleaning brushes 13 which are in flexible contact with the fine screening section 2-1, the middle screening section 2-2 and the coarse screening section 2-3 are arranged at the top ends of the fine hopper 10, the middle hopper 11 and the coarse hopper 12 respectively, discharge pipes 14 are arranged at the bottom ends of the fine hopper 10, the middle hopper 11 and the coarse hopper 12 respectively, and discharge valves are arranged on the discharge pipes 14.

The inclination of cylinder screen cloth 2 is 5 degrees, makes things convenient for the quick conveying of material in cylinder screen cloth 2, can improve screening efficiency, also is favorable to reducing the screening energy consumption. And a filter screen 15 and an exhaust fan 16 are sequentially arranged in the exhaust pipe 9 along the air outflow direction, so that the improvement of the operating environment of the device is facilitated. The rotary assembly 6 comprises a circular ring portion 6-1, a material blocking plate 6-2 and a sealing ring 6-3, the circular ring portion 6-1 is sleeved outside the roller screen 2, the sealing ring 6-3 is fixed in the circular ring portion 6-1 and is in flexible contact with the roller screen 2, the material blocking plate 6-2 is fixed at one end, away from the roller screen 2, of the circular ring portion 6-1, a discharge port 17 is arranged at the bottom side portion of the material blocking plate 6-2, the discharge port 17 is connected with a discharge hopper 7 and used for leading oversize materials of the roller screen 2 out of the screening box 1, and the sealing performance of the screening box 1 is guaranteed so as to reduce dust raising.

The working principle of the utility model is that the variable frequency speed reducing motor 4 can automatically adjust the rotating speed according to the material quantity entering the roller screen 2, thereby achieving the purpose of energy saving, the inclined roller screen 2 is sequentially provided with the fine screen section 2-1, the middle screen section 2-2 and the coarse screen section 2-3 along the material flow direction, thereby ensuring that the fine material, the middle material and the coarse material in the material can be rapidly and stably screened, the oversize material which is not screened out at the end of the roller screen 2 is led into the hopper 7 through the rotary assembly 6, thereby facilitating the collection and the secondary treatment, the screen holes of the roller screen 2 can be efficiently cleaned in time by arranging the cleaning brush 13 which is in flexible contact with the fine screen section 2-1, the middle screen section 2-2 and the coarse screen section 2-3 at the top ends of the fine screen 10, the middle screen 11 and the coarse screen 12, and simultaneously, the material can be prevented from splashing when entering the fine screen 10, the middle screen section 11 and the coarse screen 12, the fine hopper 10, the middle hopper 11 and the coarse hopper 12 can play a certain middle storage role, can realize discontinuous or continuous discharging, and are beneficial to intensively discharging and treating waste gas in the screening box 1 by arranging the gas collecting housing 8, thereby being beneficial to improving the operating environment.

The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims

1. The utility model provides a gyration classifying screen, is equipped with the screening case of landing leg including the bottom, its characterized in that: the screening box is internally and obliquely provided with a roller screen, the roller screen is fixed on a rotating shaft through a support piece, the roller screen sequentially comprises a fine screening section, a middle screening section and a coarse screening section along the flow direction of materials, the screen mesh apertures of the fine screening section, the middle screening section and the coarse screening section are sequentially increased, two ends of the rotating shaft are rotatably and hermetically connected with the screening box, one end of the rotating shaft extends out of the screening box and is in transmission connection with a variable-frequency speed-reducing motor outside the side wall of the screening box, the feeding end of the roller screen is provided with a feeding hopper, a blanking pipe of the feeding hopper extends into the roller screen, one end of the roller screen, far away from the feeding end, is rotatably and hermetically connected with a rotary assembly, the rotary assembly is fixedly connected with the screening box, a discharging hopper is arranged at the bottom side part of the rotary assembly, far away from the roller screen, the top of the screening box is provided with a gas collecting housing, and the top of the gas collecting housing is provided with an exhaust pipe, the screening box is provided with a fine hopper, a middle hopper and a coarse hopper which are respectively corresponding to the fine screening section, the middle screening section and the coarse screening section, the top ends of the fine hopper, the middle hopper and the coarse hopper are respectively provided with a cleaning brush which is in flexible contact with the fine screening section, the middle screening section and the coarse screening section, the bottom ends of the fine hopper, the middle hopper and the coarse hopper are respectively provided with a discharge pipe, and the discharge pipe is provided with a discharge valve.

2. The rotary classifying screen of claim 1, wherein: the inclination angle of the roller screen is 3-5 degrees.

3. The rotary classifying screen of claim 1, wherein: and a filter screen and an exhaust fan are sequentially arranged in the exhaust pipe along the air flow outflow direction.

4. The rotary classifying screen according to any one of claims 1 to 3, wherein: the rotary assembly comprises a circular ring portion, a material blocking plate and a sealing ring, the circular ring portion is sleeved outside the roller screen, the sealing ring is fixed in the circular ring portion and is in flexible contact with the roller screen, the material blocking plate is fixed at one end, far away from the roller screen, of the circular ring portion, a discharge port is arranged at the bottom side of the material blocking plate, and the discharge port is connected with a discharge hopper.