阅读说明：本技术 一种高效环保的筛选设备 (Screening installation of high-efficient environmental protection ) 是由 汤在英 于 2020-05-28 设计创作，主要内容包括：本发明涉及一种高效环保的筛选设备,包括筛选机构和防尘机构,所述筛选机构包括底座、限位环、第一支撑杆、驱动组件、筛网、固定杆、驱动轴、筛选筒、收集筒、定位环、两个第二支撑杆、至少两个支撑轮、至少两个凸块和至少两个排料管,所述防尘机构包括气缸、防尘板、输料管和进料斗,所述驱动组件包括电机、第一齿轮、第二齿轮、转动套管和安装轴承,该高效环保的筛选设备中,通过筛选机构对原料进行筛选,提高了筛选设备对原料的筛选效果,通过防尘机构可以将筛选设备盖住,减少了筛选设备工作时产生灰尘的数量,提高了筛选设备的环保性能。(The invention relates to efficient and environment-friendly screening equipment which comprises a screening mechanism and a dustproof mechanism, wherein the screening mechanism comprises a base, a limiting ring, a first supporting rod, a driving assembly, a screen, a fixed rod, a driving shaft, a screening cylinder, a collecting cylinder, a positioning ring, two second supporting rods, at least two supporting wheels, at least two lugs and at least two discharging pipes, the dustproof mechanism comprises an air cylinder, a dustproof plate, a conveying pipe and a feeding hopper, the driving assembly comprises a motor, a first gear, a second gear, a rotating sleeve and a mounting bearing.)

1. The efficient and environment-friendly screening equipment is characterized by comprising a screening mechanism and a dustproof mechanism, wherein the dustproof mechanism is arranged on the screening mechanism;

the screening mechanism comprises a base (8), a limiting ring (16), a first supporting rod (6), a driving assembly, a screen (10), a fixing rod (12), a driving shaft (11), a screening cylinder (9), a collecting cylinder (14), a positioning ring (17), two second supporting rods (7), at least two supporting wheels (13), at least two convex blocks (18) and at least two discharging pipes (15), wherein the second supporting rods (7) are perpendicular to the base (8), one ends of the two second supporting rods (7) are fixedly connected with the base (8), the other ends of the two second supporting rods (7) are fixedly connected with the two ends of the first supporting rod (6) respectively, the collecting cylinder (14), the screening cylinder (9) and the positioning ring (17) are coaxially arranged with the driving shaft (11), the positioning ring (17) is arranged between the two second supporting rods (7), the two sides of the second supporting rods (7) are fixedly connected with the two second supporting rods (7) respectively, the periphery of a screening cylinder (9) is established to surge drum (14) cover, the top of a screening cylinder (9) is equipped with the opening, the top of surge drum (14) and sealed and fixed connection of surge drum (9), the bottom of surge drum (14) is equipped with the opening, and each supporting wheel (13) circumference evenly sets up in the periphery of the top of surge drum (14), surge drum (14) set up the inboard at holding ring (17), and each supporting wheel (13) all supports with the one side of keeping away from base (8) of holding ring (17) and leans on, and each lug (18) evenly sets up the one side of keeping away from base (8) at holding ring (17) round the axis circumference of drive shaft (11), the one end of drive shaft (11) is passed through drive assembly and is connected with first bracing piece (6), the other end of drive shaft (11) passes through the inner wall fixed connection of dead lever (12) and screening cylinder (9), the screen (10) is arranged inside the screening cylinder (9), the driving shaft (11) is fixedly connected with the screening cylinder (9) through the screen (10), the screen (10) is in a conical shape, the bottom surface of the screen is close to the first supporting rod (6), each discharging pipe (15) is circumferentially and uniformly arranged on the periphery of the top end of the screening cylinder (9), the inside of the screening cylinder (9) is communicated with the inside of the collecting cylinder (14) through the discharging pipes (15), the plane where the bottom surface of the screen (10) is located and the discharging pipes (15) are at the same horizontal height, and the limiting ring (16) is arranged on the inner wall of the top end of the screening cylinder (9);

the dustproof mechanism comprises an air cylinder (5), a dustproof plate (4), a material conveying pipe (2) and a feed hopper (1), the dust guard (4) covers one side of the limiting ring (16) close to the first supporting rod (6), the dust guard (4) is connected with the limit ring (16) in a sliding and sealing way, the center of the dust guard (4) is provided with a hole, the driving shaft (11) passes through the opening, the axis of the cylinder (5) is parallel to the axis of the driving shaft (11), the cylinder body of the cylinder (5) is fixedly connected with the first supporting rod (6), the top end of the air rod of the cylinder (5) is fixedly connected with the dust guard (4), feeder hopper (1) and first bracing piece (6) fixed connection, feeder hopper (1) is connected with dust guard (4) through conveying pipeline (2), conveying pipeline (2) and the inside intercommunication of filter screen (9).

2. The efficient and environment-friendly screening device as claimed in claim 1, wherein a control box is arranged on the second support rod (7), a PLC is arranged inside the control box, a display screen and at least two control keys are arranged on the control box, and the display screen and each control key are electrically connected with the PLC.

3. The high-efficiency environment-friendly screening device according to claim 1, wherein the driving assembly comprises a motor (19), a first gear (22), a second gear (23), a rotating sleeve (20) and a mounting bearing (3), the rotating sleeve (20) is coaxially arranged with the driving shaft (11), the rotating sleeve (20) is connected with the first supporting rod (6) through the mounting bearing (3), the driving shaft (11) penetrates through the rotating sleeve (20), the driving shaft (11) is slidably connected with the rotating sleeve (20), the first gear (22) is arranged on the periphery of the rotating sleeve (20), the motor (19) is fixedly connected with the first supporting rod (6), the motor (19) is in transmission connection with the second gear (23), the first gear (22) is meshed with the second gear (23), and the horizontal section of the driving shaft (11) is rectangular, the drive shaft (11) is matched with the rotating sleeve (20).

4. An efficient and environmentally friendly screening apparatus as claimed in claim 3, wherein said motor (19) is a servo motor.

5. An efficient and environment-friendly screening device as claimed in claim 1, wherein a rubber ring is arranged on one side of the dust-proof plate (4) close to the limiting ring (16), and the dust-proof plate (4) is connected with the limiting ring (16) in a sliding and sealing mode through the rubber ring.

6. An efficient and environmentally friendly screening apparatus as claimed in claim 1, wherein the inside of said rotating sleeve (20) is coated with grease.

7. An efficient and environmentally friendly screening apparatus as claimed in claim 1, wherein the collection drum (14) and the screening drum (9) are coated with an anti-corrosive coating.

8. An efficient and environmentally friendly screening apparatus as claimed in claim 1, wherein a stopper (21) is provided on an end of the drive shaft (11) remote from the fixed rod (12).

9. An efficient and environmentally friendly screening apparatus as claimed in claim 1, wherein the inner side of the positioning ring (17) is evenly distributed with at least two balls, which are abutted with the collecting cylinder (14).

10. A high efficiency, environmentally friendly screening apparatus as claimed in claim 1, wherein said screen (10) is coated with a wear resistant coating.

Technical Field

The invention relates to the field of electromechanical equipment, in particular to efficient and environment-friendly screening equipment.

Background

The electromechanical equipment generally refers to machinery, electrical equipment and electrical automation equipment, and in a building, the electromechanical equipment is generally called machinery and pipeline equipment except for earthwork, carpentry, reinforcing steel bars and muddy water. The electromechanical equipment can be divided into three categories according to the application, namely industrial electromechanical equipment, information electromechanical equipment and civil electromechanical equipment.

The screening installation of prior art is as electromechanical device's a, and prior art's screening installation is when using, because the sieve is in the horizontal installation, causes the raw materials to pile up on the sieve easily, has reduced screening installation's production efficiency, and so on, prior art's screening installation can produce a large amount of dusts when using, has reduced screening installation's feature of environmental protection.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the efficient and environment-friendly screening equipment is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: the efficient and environment-friendly screening equipment comprises a screening mechanism and a dustproof mechanism, wherein the dustproof mechanism is arranged on the screening mechanism;

the screening mechanism comprises a base, a limiting ring, a first supporting rod, a driving assembly, a screen mesh, a fixing rod, a driving shaft, a screening cylinder, a collecting cylinder, a positioning ring, two second supporting rods, at least two supporting wheels, at least two convex blocks and at least two discharging pipes, wherein the second supporting rods are perpendicular to the base, one ends of the two second supporting rods are fixedly connected with the base, the other ends of the two second supporting rods are fixedly connected with the two ends of the first supporting rod respectively, the collecting cylinder, the screening cylinder and the positioning ring are coaxially arranged with the driving shaft, the positioning ring is arranged between the two second supporting rods, the two sides of the second supporting rods are fixedly connected with the two second supporting rods respectively, the collecting cylinder is sleeved on the periphery of the screening cylinder, the top end of the screening cylinder is provided with an opening, the top end of the collecting cylinder is hermetically and fixedly connected with the screening cylinder, and the bottom end of the collecting cylinder is provided, the supporting wheels are evenly arranged on the periphery of the top end of the collecting cylinder in the circumferential direction, the collecting cylinder is arranged on the inner side of the positioning ring, the supporting wheels are abutted against one side of the positioning ring, which is far away from the base, each lug is evenly arranged on one side of the positioning ring, which is far away from the base, in the circumferential direction around the axis of the driving shaft, one end of the driving shaft is connected with the first supporting rod through the driving assembly, the other end of the driving shaft is fixedly connected with the inner wall of the screening cylinder through the fixing rod, the screen is arranged in the screening cylinder, the driving shaft is fixedly connected with the screening cylinder through the screen, the screen is in a conical shape with the bottom surface close to the first supporting rod, each discharging pipe is evenly arranged on the periphery of the top end of the screening cylinder in the circumferential direction, the inside of the screening cylinder is communicated with the inside of the collecting cylinder through the discharging pipe, the limiting ring is arranged on the inner wall of the top end of the screening cylinder;

dustproof mechanism includes cylinder, dust guard, conveying pipeline and feeder hopper, the dust guard covers the one side that is close to first bracing piece at the spacing ring, the dust guard slides and sealing connection with the spacing ring, the center department of dust guard is equipped with the trompil, the drive shaft passes the trompil, the axis of cylinder is parallel with the axis of drive shaft, the cylinder body and the first bracing piece fixed connection of cylinder, the top and the dust guard fixed connection of the gas pole of cylinder, feeder hopper and first bracing piece fixed connection, the feeder hopper passes through the conveying pipeline and is connected with the dust guard, the conveying pipeline communicates with the inside of filter cylinder.

Preferably, in order to improve the automation degree of the screening device, a control box is arranged on the second supporting rod, a PLC is arranged inside the control box, a display screen and at least two control keys are arranged on the control box, and the display screen and the control keys are electrically connected with the PLC.

Preferably, in order to provide power for the driving shaft, the driving assembly includes a motor, a first gear, a second gear, a rotating sleeve and a mounting bearing, the rotating sleeve is coaxially disposed with the driving shaft, the rotating sleeve is connected with the first support rod through the mounting bearing, the driving shaft penetrates through the rotating sleeve, the driving shaft is slidably connected with the rotating sleeve, the first gear is disposed on the outer periphery of the rotating sleeve, the motor is fixedly connected with the first support rod, the motor is in transmission connection with the second gear, the first gear is engaged with the second gear, the horizontal cross section of the driving shaft is rectangular, and the driving shaft is matched with the rotating sleeve.

Preferably, the motor is a servo motor in order to improve the accuracy of the control of the rotational speed of the drive shaft.

Preferably, in order to improve the dustproof performance of the dustproof plate, a rubber ring is arranged on one side, close to the limiting ring, of the dustproof plate, and the dustproof plate is connected with the limiting ring in a sliding and sealing mode through the rubber ring.

Preferably, in order to improve the smoothness of the sliding of the driving shaft, the inner side of the rotating sleeve is coated with grease.

Preferably, in order to prolong the service life of the collecting cylinder and the screening cylinder, the collecting cylinder and the screening cylinder are coated with anti-corrosion coatings.

Preferably, in order to improve the stability of the connection between the driving shaft and the rotating sleeve, a limiting block is arranged at one end of the driving shaft, which is far away from the fixing rod.

Preferably, in order to improve the smoothness of the rotation of the collecting cylinder, at least two balls are uniformly distributed on the inner side of the positioning ring, and the balls are abutted against the collecting cylinder.

Preferably, the screen is coated with an abrasion resistant coating to extend the useful life of the screen.

The efficient and environment-friendly screening equipment has the advantages that the raw materials are screened by the screening mechanism, so that the screening effect of the screening equipment on the raw materials is improved, compared with the conventional screening mechanism, the screening mechanism enables the raw materials to generate centrifugal force during screening through the conical screen, the efficiency of separation between the raw materials with different sizes is improved, the screening effect of the screening mechanism is improved, the screening equipment can be covered by the dustproof mechanism, the quantity of dust generated during the operation of the screening equipment is reduced, the environment-friendly performance of the screening equipment is improved, compared with the conventional dustproof mechanism, the dustproof mechanism is simple in structure, the quantity of fault points of the mechanism is reduced, and the fault rate of the mechanism is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of an efficient and environmentally friendly screening apparatus of the present invention;

FIG. 2 is a schematic structural view of a screening mechanism of the high efficiency, environmentally friendly screening apparatus of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of a driving assembly of the high efficiency, environmentally friendly screening apparatus of the present invention;

in the figure: 1. the automatic feeding device comprises a feeding hopper, 2 parts of a feeding pipe, 3 parts of a mounting bearing, 4 parts of a dust guard, 5 parts of an air cylinder, 6 parts of a first supporting rod, 7 parts of a second supporting rod, 8 parts of a base, 9 parts of a screening cylinder, 10 parts of a screen, 11 parts of a driving shaft, 12 parts of a fixing rod, 13 parts of a supporting wheel, 14 parts of a collecting cylinder, 15 parts of a discharging pipe, 16 parts of a limiting ring, 17 parts of a positioning ring, 18 parts of a lug, 19 parts of a motor, 20 parts of a rotating sleeve, 21 parts of a limiting block, 22 parts of a first gear and 23 parts of a second.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the efficient and environment-friendly screening device comprises a screening mechanism and a dustproof mechanism, wherein the dustproof mechanism is arranged on the screening mechanism;

the raw materials are screened by the screening mechanism, so that the screening effect of the screening equipment on the raw materials is improved, and moreover, the screening equipment can be covered by the dustproof mechanism, so that the quantity of dust generated during the operation of the screening equipment is reduced, and the environmental protection performance of the screening equipment is improved;

as shown in fig. 2-3, the screening mechanism includes a base 8, a limiting ring 16, a first supporting rod 6, a driving assembly, a screen 10, a fixing rod 12, a driving shaft 11, a screening cylinder 9, a collecting cylinder 14, a positioning ring 17, two second supporting rods 7, at least two supporting wheels 13, at least two bumps 18 and at least two discharging pipes 15, the second supporting rods 7 are perpendicular to the base 8, one ends of the two second supporting rods 7 are fixedly connected with the base 8, the other ends of the two second supporting rods 7 are fixedly connected with two ends of the first supporting rod 6 respectively, the collecting cylinder 14, the screening cylinder 9 and the positioning ring 17 are coaxially arranged with the driving shaft 11, the positioning ring 17 is arranged between the two second supporting rods 7, two sides of the second supporting rods 7 are fixedly connected with the two second supporting rods 7 respectively, the collecting cylinder 14 is sleeved on the periphery of the screening cylinder 9, the top of the screen cylinder 9 is provided with an opening, the top of the collecting cylinder 14 is hermetically and fixedly connected with the screen cylinder 9, the bottom of the collecting cylinder 14 is provided with an opening, each supporting wheel 13 is circumferentially and uniformly arranged on the periphery of the top of the collecting cylinder 14, the collecting cylinder 14 is arranged on the inner side of the positioning ring 17, each supporting wheel 13 is abutted against one side of the positioning ring 17 far away from the base 8, each lug 18 is circumferentially and uniformly arranged on one side of the positioning ring 17 far away from the base 8 around the axis of the driving shaft 11, one end of the driving shaft 11 is connected with the first supporting rod 6 through a driving assembly, the other end of the driving shaft 11 is fixedly connected with the inner wall of the screen cylinder 9 through a fixing rod 12, the screen 10 is arranged inside the screen cylinder 9, the driving shaft 11 is fixedly connected with the screen cylinder 9 through the screen 10, and the screen 10 is in the shape of a cone with the bottom surface, the discharge pipes 15 are circumferentially and uniformly arranged on the periphery of the top end of the screening cylinder 9, the interior of the screening cylinder 9 is communicated with the interior of the collecting cylinder 14 through the discharge pipes 15, the plane where the bottom surface of the screen cloth 10 is located and the discharge pipes 15 are located at the same horizontal height, and the limiting ring 16 is arranged on the inner wall of the top end of the screening cylinder 9;

under the supporting action of the second supporting rod 7, the stability of the positioning ring 17 is improved, under the supporting action of the supporting wheel 13, the stability of the screening cylinder 9 and the collecting cylinder 14 is improved, the stability of the driving assembly is improved through the first supporting rod 6, power is provided through the driving assembly, the screen cloth 10 is driven to rotate through the driving shaft 11, meanwhile, the screening cylinder 9 and the collecting cylinder 14 are driven to rotate through the fixing rod 12, under the thrust action of the projection 18 on the supporting wheel 13 and the gravity action of the screening cylinder 9, the screening cylinder 9 moves up and down in a reciprocating manner, the screen cloth 10 can shake up and down while rotating, after an operator puts raw materials into the screening cylinder 9, the raw materials are screened through the screen cloth 10, the raw materials with smaller volume are driven to rotate through the screen cloth 10 under the dual actions of centrifugal force and inertia, the raw materials better pass through the screen cloth 10, and the probability of blockage of the screen cloth 10 is reduced, meanwhile, the raw materials with larger volume rise along the screen mesh 10, so that the raw materials with larger particles are discharged through the discharge pipe 15, and the raw materials with larger volume are collected under the action of the collecting cylinder 14, thereby reducing the probability of throwing the raw materials and improving the safety of the screening equipment;

as shown in fig. 1, the dust-proof mechanism includes an air cylinder 5, a dust-proof plate 4, a material conveying pipe 2 and a feeding hopper 1, the dust-proof plate 4 covers one side of a limiting ring 16 close to a first supporting rod 6, the dust-proof plate 4 is connected with the limiting ring 16 in a sliding and sealing manner, a hole is formed in the center of the dust-proof plate 4, a driving shaft 11 penetrates through the hole, the axis of the air cylinder 5 is parallel to the axis of the driving shaft 11, the cylinder body of the air cylinder 5 is fixedly connected with the first supporting rod 6, the top end of an air rod of the air cylinder 5 is fixedly connected with the dust-proof plate 4, the feeding hopper 1 is fixedly connected with the first supporting rod 6, the feeding hopper 1 is connected with the dust-proof plate 4 through the material conveying pipe 2, and the material conveying pipe;

under the supporting role of first bracing piece 6, the stability of dust guard 4 has been improved through cylinder 5, go up and down through 5 drive dust guards 4 of cylinder, then cover spacing ring 16 through dust guard 4, the inside dust of screen drum 9 has been reduced and has been drifted away to the outside probability of screen drum 9, the dustproof performance of screening installation has been improved, the environmental protection performance of screening installation has been improved, simultaneously can send the raw materials into inside the screen drum 9 through feeder hopper 1 and conveying pipeline 2, the convenience that the screening installation used has been improved.

Preferably, in order to improve the automation degree of the screening equipment, a control box is arranged on the second support rod 7, a PLC is arranged in the control box, a display screen and at least two control keys are arranged on the control box, and the display screen and the control keys are electrically connected with the PLC;

the PLC is a programmable logic controller, it adopts a kind of programmable memory, it is used for its internal storage program, implement logic operation, sequence control, timing, counting and arithmetic operation, etc. and control various kinds of machinery or production process by digital or analog input/output, it is a computer specially used for industrial control, its hardware structure is basically the same as microcomputer, generally used for the processing of data and receiving and outputting of the order, used for realizing central control, the operator sends the control signal to PLC through the control key, then control the operation of screening installation through PLC, can display the working condition of screening installation through the display screen at the same time, then has improved the automaticity of screening installation.

As shown in fig. 4, the driving assembly includes a motor 19, a first gear 22, a second gear 23, a rotating sleeve 20 and a mounting bearing 3, the rotating sleeve 20 is coaxially disposed with the driving shaft 11, the rotating sleeve 20 is connected with the first support rod 6 through the mounting bearing 3, the driving shaft 11 passes through the rotating sleeve 20, the driving shaft 11 is slidably connected with the rotating sleeve 20, the first gear 22 is disposed on the outer circumference of the rotating sleeve 20, the motor 19 is fixedly connected with the first support rod 6, the motor 19 is in transmission connection with the second gear 23, the first gear 22 is engaged with the second gear 23, the horizontal cross-section of the driving shaft 11 is rectangular, and the driving shaft 11 is matched with the rotating sleeve 20;

under the supporting action of the first supporting rod 6, the stability of the rotating sleeve 20 is improved by installing the bearing 3, the second gear 23 is driven to rotate by the motor 19, the rotating sleeve 20 is driven to rotate by the second gear 23 under the transmission action of the first gear 22, and the driving shaft 11 is driven to rotate by the rotating sleeve 20.

Preferably, the motor 19 is a servo motor in order to improve the accuracy of the rotational speed control of the drive shaft 11.

Preferably, in order to improve the dustproof performance of the dustproof plate 4, a rubber ring is arranged on one side, close to the limit ring 16, of the dustproof plate 4, and the dustproof plate 4 is connected with the limit ring 16 in a sliding and sealing mode through the rubber ring;

the clearance between the dust guard 4 and the limiting ring 16 is reduced through the rubber ring, and the dust-proof performance of the dust guard 4 is improved.

Preferably, in order to improve the smoothness of the sliding of the driving shaft 11, the inner side of the rotating sleeve 20 is coated with grease;

the friction between the drive shaft 11 and the rotary sleeve 20 is reduced by the grease, and the smoothness of the sliding of the drive shaft 11 is improved.

Preferably, in order to prolong the service life of the collecting cylinder 14 and the screening cylinder 9, the collecting cylinder 14 and the screening cylinder 9 are coated with anti-corrosion coatings;

the corrosion speed of the collecting cylinder 14 and the screening cylinder 9 is reduced through the anti-corrosion coating, and the service life of the collecting cylinder 14 and the screening cylinder 9 is prolonged.

Preferably, in order to improve the stability of the connection between the driving shaft 11 and the rotating sleeve 20, a stop block 21 is arranged on one end of the driving shaft 11 away from the fixed rod 12;

through the limiting effect of the limiting block 21, the probability of separation between the driving shaft 11 and the rotating sleeve 20 is reduced, and the connection stability of the driving shaft 11 and the rotating sleeve 20 is improved.

Preferably, in order to improve the smoothness of the rotation of the collecting cylinder 14, at least two balls are uniformly distributed on the inner side of the positioning ring 17, and the balls are abutted against the collecting cylinder 14;

the friction between the collecting cylinder 14 and the positioning ring 17 is reduced by the balls, and the smoothness of the rotation of the collecting cylinder 14 is improved.

Preferably, in order to extend the service life of the screen 10, the screen 10 is coated with a wear resistant coating;

the wear-resistant coating slows down the wear of the screen cloth 10 and prolongs the service life of the screen cloth 10.

The power is provided by the driving component, the screen cloth 10 is driven to rotate by the driving shaft 11, the screening cylinder 9 and the collecting cylinder 14 are driven to rotate by the fixing rod 12, the screening cylinder 9 can move up and down in a reciprocating manner under the thrust action of the projection 18 on the supporting wheel 13 and the gravity action of the screening cylinder 9, so that the screen cloth 10 can shake up and down while rotating, after an operator puts raw materials into the screening cylinder 9, the raw materials are screened by the screen cloth 10, the raw materials with smaller volume can better pass through the screen cloth 10 under the dual actions of centrifugal force and inertia by driving the raw materials to rotate by the screen cloth 10, the probability of blockage of the screen cloth 10 is reduced, the dustproof plate 4 is driven by the air cylinder 5 to lift, the limit ring 16 is covered by the dustproof plate 4, the probability of scattering dust in the screening cylinder 9 to the outside of the screening cylinder 9 is reduced, and the dustproof performance of the screening device is improved, the environmental protection performance of the screening equipment is improved.

Compared with the prior art, in this screening installation of high-efficient environmental protection, filter the raw materials through screening mechanism, the screening effect of screening installation to the raw materials has been improved, compare with current screening mechanism, this screening mechanism passes through toper screen cloth 10, make the raw materials produce centrifugal force when screening, the efficiency of separation between the equidimension raw materials of difference has been improved, the screening effect of screening mechanism has been improved, moreover, can cover screening installation through dustproof mechanism, the quantity of screening installation during operation production dust has been reduced, the environmental protection performance of screening installation has been improved, compare with current dustproof mechanism, this dustproof mechanism simple structure, the quantity of this mechanism's fault point has been reduced, the fault rate of this mechanism has been reduced.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.