CN114226246A

CN114226246A - Classifying and screening equipment and classifying and screening method

Info

Publication number: CN114226246A
Application number: CN202111536574.7A
Authority: CN
Inventors: 张会芳; 颜政伟; 陈汇鋆; 魏文博; 方芳; 王静; 高利亚; 张海芳; 薛秉江; 孙鹰飞
Original assignee: Hebei University of Architecture
Current assignee: Hebei University of Architecture
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-03-25

Abstract

The invention discloses sorting and screening equipment and a sorting and screening method, and relates to the technical field of sorting equipment. Comprises a screening part and an impurity removing part; the screening part comprises a bottom plate; the device comprises a support frame, a lifting device, a fixed sleeve and a roller; the roller is sleeved in the roller and is connected with the roller through a bearing; a driving motor is arranged on the outer wall of the fixed sleeve; a gear is fixed at the output end of the driving motor; a gear ring is fixed on the outer wall of the roller sleeve; the gear ring is meshed with the gear; one end of the roller is provided with a feed inlet, and the other end of the roller is provided with a discharge outlet; a plurality of screen drums are sequentially sleeved inside the roller from inside to outside; a sealing cover can be detachably arranged at the discharge end of each screen drum; the feed inlet is communicated with the innermost screen drum, and the discharge outlet is provided with an end cover; the mesh apertures of the plurality of screen cylinders are sequentially reduced from inside to outside; the impurity removing part comprises a conveying belt and an impurity removing device. According to the invention, through the arrangement of the multistage screen cylinder, the aggregate is screened more fully and classified more uniformly, and the aggregate is purified more through the centrifugal turntable.

Description

Classifying and screening equipment and classifying and screening method

Technical Field

The invention relates to the technical field of sorting equipment, in particular to sorting and screening equipment and a sorting and screening method.

Background

Concrete aggregate refers to a granular loose material that plays a role of a skeleton or filling in concrete. The aggregate is divided into coarse aggregate and fine aggregate. The coarse aggregate refers to pebbles, broken stones and the like, and the fine aggregate refers to natural sand, artificial sand and the like. Aggregates with different grades are obtained by screening, the existing aggregate screening machine cannot screen sufficiently and uniformly, impurities cannot be separated, and the obtained aggregates are not fine enough and have poor using effect.

Disclosure of Invention

The invention mainly aims to provide a classifying and screening device and a classifying and screening method so as to solve the problems.

In order to achieve the purpose, the invention provides a classifying and screening device, which comprises a screening part and an impurity removing part; the screening portion includes a base plate; the device comprises a support frame, a lifting device, a fixed sleeve and a roller; the bottom of the support frame is fixed on the bottom plate; the bottom of the lifting device is hinged to the bottom plate; one end of the outer wall of the fixed sleeve is hinged with the support frame, and the other end of the outer wall of the fixed sleeve is hinged with the working end of the lifting device; the roller is sleeved in the fixed sleeve and is connected with the fixed sleeve through a bearing; a driving motor is arranged on the outer wall of the fixed sleeve; a gear is fixed at the output end of the driving motor; the outer wall of the fixed sleeve is provided with a gear hole for a gear to pass through; a gear ring is fixed on the outer wall of the roller; the gear ring is meshed with the gear; one end of the roller is provided with a feeding hole, and the other end of the roller is provided with a discharging hole; a plurality of screen drums are sequentially sleeved inside the rotary drum from inside to outside; a sealing cover can be detachably arranged at the discharge end of each screen drum; the feed port is communicated with the innermost screen drum, and the discharge port is provided with an end cover; the mesh apertures of the plurality of screen cylinders are sequentially reduced from inside to outside; the impurity removing part comprises a conveying belt and an impurity removing device; one end of the conveying belt is positioned at the bottom of the discharge hole, and the other end of the conveying belt is positioned at the upper part of the impurity removing device; the impurity removing device comprises a centrifugal motor and a centrifugal turntable; the centrifugal motor is fixedly connected with the bottom plate; the centrifugal turntable is detachably connected with the output end of the centrifugal motor.

Furthermore, one end of the interior of the roller, which is close to the feed inlet, is provided with a plurality of annular connecting parts; the screen drum is in threaded connection with the annular connecting part.

Furthermore, a plurality of supporting legs are arranged on the outer wall of the screen drum and are abutted against the screen drum on the outer side of the supporting legs; the supporting legs on the sieve drum at the outermost side are abutted against the inner wall of the roller.

Further, a bearing disc is arranged on the centrifugal motor; the centrifugal turntable is arranged in the bearing disc and is rotationally connected with the bearing disc.

Further, the lifting device is one of a hydraulic cylinder, an air cylinder and an electric cylinder.

Further, the feed inlet is conical.

The invention also provides a screening method of the classification screening equipment, which comprises the following steps:

s1, closing the sealing cover and the end cover of the screen drum from inside to outside in sequence, pouring the aggregate into the inner side of the roller from the feeding port, and starting the equipment for screening.

And S2, after the equipment stops, starting a lifting device of the equipment to incline the roller to reach a certain angle.

And S3, opening an end cover at the discharge port, sliding the aggregates with the minimum particle size out of the roller, and conveying the aggregates into the centrifugal turntable through the conveying belt.

And S4, turning on a switch of the centrifugal motor, enabling the aggregates to rotate at a high speed, and distributing the aggregates at different distances from the center of the centrifugal turntable due to different masses of impurities and the aggregates.

S5, turning off the centrifugal motor, taking out the centrifugal turntable, cleaning impurities, taking qualified aggregate away, and putting the centrifugal turntable back to the output shaft of the centrifugal motor.

And S6, repeating the steps S3-S5, and opening the sealing covers of the screen cylinder from outside to inside in sequence for step-by-step treatment.

Further, in step S1, when the device is started, the driving motor drives the gear to rotate, and the gear engages with the gear ring to rotate, thereby driving the roller to rotate.

Further, in step S1, according to different screening grades, screen cylinders with different apertures are replaced to meet the screening requirement.

The invention has the beneficial effects that:

according to the invention, through the arrangement of the multistage screen cylinder, the aggregate is screened more fully and classified more uniformly, and impurities are removed through the centrifugal turntable, so that the aggregate is purer and has a good use effect.

Drawings

Fig. 1 is a perspective view of a classifying and screening apparatus of the present invention.

FIG. 2 is a cross-sectional view of a classifying and screening apparatus of the present invention.

Fig. 3 is an exploded view of a classifying and screening apparatus of the present invention.

Fig. 4 is a schematic structural diagram of a roller of the classifying and screening device of the invention.

Wherein, 1-a bottom plate; 2-a lifting device; 3-a support frame; 4-a roller; 5-a bearing; 6-fixing the sleeve; 7-a conveyor belt; 8-an impurity removal device; 9-a screen drum; 41-a feed inlet; 42-end cap; 43-a discharge hole; 44-a gear ring; 45-annular connection; 61-gear; 62-a drive motor; 63-gear hole; 81-centrifugal motor; 82-a carrier tray; 83-centrifugal rotating disc; 91-supporting the feet; 92-sealing cover.

Detailed Description

To achieve the above objects and advantages, the present invention provides a technical means and a structure thereof, which are described in detail with reference to the accompanying drawings.

As shown in fig. 1-4, the present invention provides a classifying and screening apparatus comprising a screening portion and a trash removing portion; the screening portion comprises a bottom plate 1; the device comprises a support frame 3, a lifting device 2, a fixed sleeve 6 and a roller 4; the bottom of the support frame 3 is fixed on the bottom plate 1; the bottom of the lifting device 2 is hinged to the bottom plate 1; one end of the outer wall of the fixed sleeve 6 is hinged with the support frame 3, and the other end of the outer wall of the fixed sleeve is hinged with the working end of the lifting device 2; the roller 4 is sleeved in the fixed sleeve 6 and is connected with the fixed sleeve 6 through a bearing 5; a driving motor 62 is arranged on the outer wall of the fixed sleeve 6; a gear 61 is fixed at the output end of the driving motor 62; a gear hole 63 for the gear 61 to pass through is formed in the outer wall of the fixed sleeve 6; a gear ring 44 is fixed on the outer wall of the roller 4; the ring gear 44 is meshed with the gear 61; one end of the roller 4 is provided with a feeding hole 41, and the other end is provided with a discharging hole 43; a plurality of screen drums 9 are sequentially sleeved inside the roller 4 from inside to outside; the discharge end of each screen drum 9 can be detachably provided with a sealing cover 92; the feed port 41 is communicated with the innermost screen drum 9, and the discharge port 43 is provided with an end cover 42; the mesh aperture of the plurality of screen cylinders 9 is reduced from inside to outside in sequence; the impurity removing part comprises a conveying belt 7 and an impurity removing device 8; one end of the conveying belt 7 is positioned at the bottom of the discharge hole 43, and the other end of the conveying belt is positioned at the upper part of the impurity removing device 8; the impurity removing device 8 comprises a centrifugal motor 81 and a centrifugal turntable 83; the centrifugal motor 81 is fixedly connected with the bottom plate 1; the centrifugal turntable 83 is detachably connected with the output end of the centrifugal motor 81.

In another embodiment, a plurality of annular connecting parts 45 are arranged at one end of the interior of the roller 4 close to the feeding hole 41; the screen cylinder 9 is screwed to the annular connecting portion 45. This arrangement facilitates the removal and replacement of the screen drum 9.

In another embodiment, a plurality of supporting legs 91 are arranged on the outer wall of the screen drum 9, and the supporting legs 91 are abutted with the screen drum 9 outside the supporting legs 91; the supporting legs 91 on the outermost screen drum 9 abut against the inner wall of the drum 4. The supporting leg 91 can improve the supporting force of the screen drum 9 and prevent the screen drum 9 from eccentric deformation in the rotating process.

In another embodiment, a bearing tray 82 is arranged on the centrifugal motor 81; the centrifugal turntable 83 is disposed in the bearing plate 82 and is rotatably connected with the bearing plate 82. The carrier plate 82 provides effective support for the centrifugal rotor plate while preventing the centrifugal rotor plate 83 from vibrating up and down to affect centrifugal motion.

In another embodiment, the lifting device 2 is one of a hydraulic cylinder, an air cylinder, and an electric cylinder.

In another embodiment, the feed opening 41 is tapered to facilitate the introduction of aggregate into the screen cylinder 9, and to prevent residual aggregate from remaining in the feed opening 41.

s1, closing the sealing cover 92 and the end cover 42 of the screen drum 9 from inside to outside in sequence, pouring the aggregate into the inner side of the roller 4 from the feeding hole 41, and starting the equipment for screening.

S2, after the equipment is stopped, the lifting device 2 of the equipment is started to incline the roller 4 to a certain angle.

S3, opening the end cover at the discharge hole 43, sliding the aggregate with the minimum grain diameter out of the roller 4, and entering the centrifugal turntable 83 through the conveyer belt 7.

S4, turning on a switch of the centrifugal motor 81, enabling the aggregates to rotate at high speed and to be distributed at different distances in the center of the centrifugal turntable 83 due to different masses of impurities and aggregates.

S5, turning off the centrifugal motor 81, taking out the centrifugal turntable 83, cleaning impurities, taking qualified aggregate away, and then putting the centrifugal turntable 83 back to the output shaft of the centrifugal motor 81.

And S6, repeating the steps S3-S5, and opening the sealing covers 92 of the screen cylinders 9 from outside to inside in sequence for step-by-step processing.

In another embodiment, in step S1, when the apparatus is started, the driving motor 62 rotates the gear 61, and the gear 61 engages with the gear ring 44 to rotate, thereby rotating the drum 4.

In another embodiment, in step S1, the screen cylinder 9 with different aperture sizes is replaced according to different screening grades to meet the screening requirement.

The above description is only a preferred embodiment of the present invention, and not all embodiments, and all structural changes made under the teaching of the present invention should be understood as belonging to the protection scope of the present invention.

Claims

1. a classification and screening equipment, is characterized in that, comprises screening part and impurity removal part; Described screening part comprises base plate; Support frame, lifting device, fixed sleeve and roller; Described support frame bottom is fixed on base plate; The bottom of the lifting device is hinged on the bottom plate; one end of the outer wall of the fixing sleeve is hinged with the support frame, and the other end is hinged with the working end of the lifting device; the roller is sleeved inside the fixing sleeve and connected with the fixing sleeve through a bearing; A drive motor is arranged on the outer wall of the fixed sleeve; the output end of the drive motor is fixed with a gear; the outer wall of the fixed sleeve is provided with a gear hole for the gear to pass through; a ring gear is fixed on the outer wall of the drum; The ring gear meshes with the gear; one end of the drum is provided with a feeding port, and the other end is provided with a discharging port; a plurality of sieve cylinders are sequentially sleeved inside the drum from the inside to the outside; the discharge end of each sieve cylinder can be The disassembly is provided with a sealing cover; the feed port is communicated with the innermost sieve cylinder, and the discharge port is provided with an end cover; the apertures of the sieve holes of the plurality of sieve cylinders decrease in turn from the inside to the outside; the impurity removal part It includes a conveyor belt and an impurity removal device; one end of the conveyor belt is located at the bottom of the discharge port, and the other end is located at the upper part of the impurity removal device; the impurity removal device includes a centrifugal motor and a centrifugal turntable; the centrifugal motor is fixedly connected with the bottom plate; the The centrifugal turntable is detachably connected to the output end of the centrifugal motor.

2 . The classification and screening equipment according to claim 1 , wherein a plurality of annular connecting parts are provided inside the drum at one end close to the feeding port; the sieve drum is screwed with the annular connecting parts. 3 .

3. The classification and screening equipment according to claim 2, wherein a plurality of support feet are provided on the outer wall of the sieve cylinder, and the support feet abut with the sieve cylinder on the outer side; the outermost sieve cylinder The supporting feet on the top are in contact with the inner wall of the drum.

4 . The classification and screening equipment according to claim 3 , wherein the centrifugal motor is provided with a bearing plate; the centrifugal turntable is arranged in the bearing plate and is rotatably connected with the bearing plate. 5 .

5 . The classification and screening equipment according to claim 1 , wherein the lifting device is one of a hydraulic cylinder, an air cylinder, and an electric cylinder. 6 .

6. The classification and screening equipment according to any one of claims 1-4, wherein the feed port is conical.

7. a classification and screening equipment screening method, is characterized in that, comprises the following steps:

S1. Close the sealing cover and end cover of the sieve drum in turn from the inside to the outside, pour the aggregate into the inside of the drum from the feeding port, and start the equipment for screening;

S2. After the equipment stops, start the lifting device of the equipment to incline the drum and reach a certain angle;

S3. Open the end cover at the discharge port, and the aggregate with the smallest particle size slides out of the drum and enters the centrifugal turntable through the conveyor belt;

S4. Turn on the switch of the centrifugal motor, and the aggregate rotates at a high speed. Due to the different quality of impurities and aggregates, they are distributed at different distances from the center of the centrifugal turntable;

S5. Turn off the centrifugal motor, take out the centrifugal turntable, clean the impurities, take away the qualified aggregate, and put the centrifugal turntable back on the output shaft of the centrifugal motor;

S6, repeating steps S3-S5, sequentially opening the sealing cover of the sieve cylinder from the outside to the inside, and performing step-by-step processing.

8 . The method for classifying and screening equipment according to claim 7 , wherein in step S1 , when starting the equipment, the drive motor drives the gear to rotate, the gear meshes with the ring gear to rotate, and then drives the drum to rotate. 9 .

9 . The screening method for classification and screening equipment according to claim 7 , wherein in step S1 , according to different screening grades, sieve cylinders with different apertures are replaced to meet screening requirements. 10 .