CN219463983U

CN219463983U - Aggregate particle size screening plant for concrete processing

Info

Publication number: CN219463983U
Application number: CN202320779854.9U
Authority: CN
Inventors: 李鑫; 张伟建
Original assignee: Haikou Island Concrete Co ltd
Current assignee: Haikou Island Concrete Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-08-04
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses an aggregate particle size screening device for concrete processing, which comprises two supporting frames arranged at intervals and a screen cylinder obliquely arranged between the two supporting frames, wherein the screen cylinder is a hollow cylinder with closed end faces at two ends, a rotating shaft which is rotatably arranged in the two end faces of the screen cylinder in a penetrating way is arranged on the central axis of the screen cylinder, and two ends of the rotating shaft are respectively fixedly arranged on the supporting frames at two sides. The outside of the screen cylinder is also provided with a driving mechanism for driving the screen cylinder to rotate around the rotating shaft. A plurality of sieve meshes have been seted up on the cambered surface lateral wall of a sieve section of thick bamboo, still be equipped with a plurality of bracing pieces on the well position of pivot outer wall in the sieve section of thick bamboo, the bottom fixed connection of bracing piece is in the pivot, and the top of bracing piece is equipped with the elastic component, and the end-to-end connection of elastic component has the piece of beating, and the feed inlet has still been seted up to the terminal surface of the lower one side of a sieve section of thick bamboo, but the switching is equipped with the feed inlet and discharge lid in the feed inlet. The device can automatically remove aggregate clamped in the sieve holes in the sieving process, so that the reduction of sieving efficiency is avoided, the downtime is reduced, and the working efficiency is improved.

Description

Aggregate particle size screening plant for concrete processing

Technical Field

The utility model relates to the technical field of concrete processing equipment, in particular to an aggregate particle size screening device for concrete processing.

Background

The aggregate is a granular material which plays a role in framework and filling in concrete and mortar, and is divided into fine aggregate and coarse aggregate, wherein the particle diameter of the fine aggregate is between 0.16 and 5mm, natural sand, such as river sand, sea sand, valley sand and the like, the particle diameter of the coarse aggregate is more than 5mm, common broken stone and pebble are also used, and the recycled aggregate is obtained by crushing waste concrete. When concrete processing is carried out, firstly, the aggregates are required to be screened, and the general screening device utilizes the relative movement of the particulate materials and the screening surface to separate the aggregates into different grades according to the particle size.

The screening process of the screening device is generally continuous, and after the aggregates are conveyed to the screening rotation, aggregates smaller than the size of the screen holes are screened out through the screen holes, and aggregates larger than the size of the screen holes are left in the device to wait for final discharge. However, most of the current drum-type screening devices are used for a period of time, and then some aggregates are blocked in the screen holes, so that screening efficiency is reduced, the problem can be solved after shutdown cleaning is needed, and working efficiency is reduced.

In view of the above, the aggregate particle size screening device for concrete processing is provided, and aggregate clamped in a screen hole can be automatically removed in the screening process, so that the reduction of screening efficiency is avoided, the downtime is reduced, and the working efficiency is improved.

Disclosure of Invention

The utility model aims to provide an aggregate particle size screening device for concrete processing, which aims to solve the problems described in the background art.

The technical scheme of the utility model is realized as follows:

the utility model provides an aggregate particle diameter screening plant for concrete processing, includes two interval arrangement's support frame and slope locate the screen drum between two support frames, the screen drum is the hollow cylinder that both ends have closed terminal surface, is equipped with the pivot of rotating wearing to establish in the screen drum both ends face on the axis of screen drum, pivot both ends fixed mounting respectively on the support frame on both sides still be equipped with the actuating mechanism who is used for driving the screen drum and revolute pivot pivoted outside the screen drum, a plurality of sieve meshes have been seted up on the cambered surface lateral wall of screen drum, still be equipped with a plurality of bracing pieces on the well upper portion of the pivot outer wall in the screen drum, the bottom fixed connection of bracing piece is in the pivot, the top of bracing piece is equipped with the elastic component, the end-to-end connection of elastic component has the knocking piece, the distance between the cambered surface inside wall of knocking piece and screen drum is 0 ~ 10 millimeters, the feed inlet and discharge gate has still been seted up to the terminal surface of the lower one side of screen drum, but the switching is equipped with feed inlet and discharge cap in the feed inlet.

When the device is used, the feeding and discharging cover is opened, aggregate to be screened is added from the feeding and discharging opening, the driving mechanism is started, the screen drum is driven to rotate around the rotating shaft, the aggregate continuously rolls under the rotation of the screen drum, required fine aggregate is screened out from the screen holes, aggregate clamped in the screen holes is hit by the knocking block when the screen holes pass through the knocking block, the knocking block falls off from the screen holes, when the clamped and excessively tight aggregate which cannot be knocked off in one step is encountered, the elastic piece between the supporting rod and the knocking block can be bent to absorb kinetic energy generated during knocking, the knocking block is enabled to displace and avoid the clamped aggregate, deformation of the screen holes due to strong knocking is avoided, the clamped and excessively tight aggregate is removed through repeated knocking, the function of automatically cleaning the aggregate clamped in the screen holes in the screening process is realized, screening efficiency is avoided to be reduced, and the shutdown time is less, so that the working efficiency is improved. After screening, the feeding and discharging cover is opened, and the coarse aggregate slides to the feeding and discharging opening under the gravity of the inclined screen drum, so that the coarse aggregate is discharged.

The further technical scheme is that one face of the knocking block facing to the aggregate impact is a concave face, the middle of the concave face is concave towards the direction of the aggregate impact, one end of the concave face, which is close to the inner side wall of the cambered surface of the screen drum, is a top, and the top of the concave face is convex towards the opposite direction of the aggregate impact.

The concave surface similar to the crescent tip is beneficial to shoveling out the aggregate clamped in the sieve holes when contacting the aggregate, and the efficiency of removing the aggregate is improved.

The further technical scheme is that the top surface of the knocking block is a lifting back cambered surface, so that the thickness of one end of the knocking block facing the aggregate impact is larger than that of the other end.

The lifting back cambered surface enables one end of the concave surface, which is close to the inner side wall of the cambered surface of the screen cylinder, to have enough strength, and the top of the knocking block cannot interfere with the inner side wall of the cambered surface of the screen cylinder.

The further technical proposal is that the distance between the top of the concave surface and the inner side wall of the cambered surface of the screen cylinder is 0-2 mm.

The smaller the distance between the top of the concave surface and the inner side wall of the cambered surface of the screen cylinder, the better the shoveling effect of the screen cylinder on aggregate clamped in the screen holes, and the higher the efficiency of removing the aggregate.

The further technical scheme is that the plurality of sieve holes are arranged on the cambered side wall of the sieve cylinder in a matrix arrangement, and the plurality of supporting rods are correspondingly arranged on the rotating shaft, so that each sieve hole passes through the knocking block in the rotating process.

The screen holes are arranged on the outer screen drum in a matrix arrangement manner, so that each screen hole can obtain the opportunity of being staggered with the knocking blocks in the rotation process of the screen drum, the arrangement of the knocking blocks is facilitated, and the knocking effect obtained by each screen hole is kept consistent

The further technical scheme is that the elastic piece is a spring.

The driving mechanism comprises a driven wheel sleeved on the side wall of the outer cambered surface of the screen drum, a fixed motor arranged outside the screen drum, and a driving wheel arranged on the output shaft of the motor and connected with the driven wheel in a driving way.

The utility model has the beneficial effects that:

1. through setting up motionless pivot and pivoted screen drum to and set up in the pivot and strike piece and elastic component, the aggregate constantly rolls under the rotation of screen drum, screen out required fine aggregate from the sieve mesh, the aggregate of card in the sieve mesh is hit when the sieve mesh passes through the piece of beating, hit the piece and beat, drop from the sieve mesh, when meetting the tight, unable disposable aggregate of beating of card, the elastic component between bracing piece and the piece of beating can crooked and produce kinetic energy when beating in order to absorb beating, make the piece of beating take place the displacement and avoid the tight aggregate of card, avoid the sieve mesh to take place to warp because of powerful beating down, thereby get rid of the tight aggregate of card through many times beating, realize the function of automatic clear card in the sieve mesh, avoid screening efficiency to reduce, less down time, thereby improve work efficiency.

2. Through the knocking block with the concave surface, the knocking surface of the knocking block is the concave surface similar to the crescent tip, so that aggregates clamped in the sieve holes can be shoveled out when contacting the aggregates, and the efficiency of removing the aggregates is improved.

3. Through the top surface design of knocking the piece is to lifting back cambered surface for the one end thickness that the knocking piece was impacted towards the aggregate is greater than the thickness of the other end, makes the concave surface be close to the one end of screen drum cambered surface inside wall have sufficient intensity, also makes the top of knocking the piece can not interfere with the cambered surface inside wall of screen drum each other.

Drawings

FIG. 1 is a general elevation of the present utility model;

FIG. 2 is a partial cross-sectional elevation view of the present utility model;

FIG. 3 is a side cross-sectional view of the screen cylinder and the spindle;

fig. 4 is a perspective view of the knocking block and the elastic member.

In the figure, 1, left support frame, 2, motor, 3, belt, 4, driving pulley, 5, driven pulley, 6, screen drum, 7, sieve mesh, 8, pivot, 9, dust bearing, 10, strike piece, 11, spring, 12, bracing piece, 13, concave surface, 14, lift back cambered surface, 15, dust board, 16, right support frame, 17, feed and discharge cover, 18, feed and discharge opening.

Detailed Description

For a better understanding of the technical content of the present utility model, specific examples are provided below and the present utility model is further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, an aggregate particle size screening device for concrete processing comprises two supporting frames which are arranged at intervals, namely a left supporting frame 1 and a right supporting frame 16, wherein a screen drum 6 is obliquely arranged between the two supporting frames, the screen drum 6 is a hollow cylinder with closed sections at two ends, dust-proof bearings 9 are arranged at the centers of two end faces of the screen drum 6, a rotating shaft 8 is arranged on the central axis of the screen drum 6, the central axis of the rotating shaft 8 coincides with the central axis of the screen drum 6, two ends of the rotating shaft 8 rotate and penetrate through the two dust-proof bearings 9, and are fixedly installed on the left supporting frame 1 and the right supporting frame 16 in an outward extending mode.

Driven wheels are fixedly sleeved on the side wall of the outer cambered surface of the screen drum 6, a motor 2 is fixedly installed on a bottom plate below the screen drum 6 or on the ground, a driving wheel is arranged on an output shaft of the motor 2, and the driving wheel is in driving connection with the driven wheels.

The driving pulley is a driving pulley 4, the driven pulley is a driven pulley 5, and the driving belt 3 and the driven pulley 5 are driven by the belt 3.

The motor 2 is started, the driving wheel drives the driven wheel to rotate, and the driven wheel drives the screen drum 6 to rotate around the rotating shaft 8.

A plurality of sieve holes 7 are arranged on the cambered surface side wall of the sieve cylinder 6, and the sieve holes 7 are arranged in a matrix array.

A plurality of support rods 12 are fixedly arranged on the middle upper part of the outer wall of the rotating shaft 8 in the screen cylinder 6, the bottoms of the support rods 12 are fixedly connected to the rotating shaft 8, springs 11 are fixedly arranged at the tops of the support rods 12, and knocking blocks 10 are fixedly arranged at the tops of the springs 11.

The concrete structure is that one face of the knocking block 10 facing to the impact of the aggregate is a concave surface 13, the middle part of the concave surface 13 is concave towards the impact direction of the aggregate, one end of the concave surface 13, which is close to the inner side wall of the cambered surface of the screen drum 6, is a top, and the top of the concave surface 13 is convex towards the opposite direction of the impact of the aggregate. The top surface of the knocking block 10 is a lifting back cambered surface 14, so that the thickness of one end of the knocking block 10 facing the aggregate impact is larger than that of the other end.

Specifically, the distance between the top of the concave surface 13 of the knocking block 10 and the cambered surface inner side wall of the screen cylinder 6 is 0.5-1.5 mm.

The concrete structure is that a plurality of bracing pieces 12 are according to the matrix arrangement distribution of sieve mesh 7 and corresponding crisscross distribution on pivot 8 for every sieve mesh 7 can all pass through knocking block 10 after the rotation process, make the knocking range of knocking block 10 cover all sieve meshes 7.

A feeding and discharging hole 18 is formed in the end face of the intersecting bottom side of the screen cylinder 6, the edge of the feeding and discharging hole 18 is connected with the inner cambered surface side wall of the screen cylinder 6, a feeding and discharging cover 17 is arranged at the feeding and discharging hole 18, one side of the feeding and discharging cover 17 is rotationally hinged to the end face of the screen cylinder 6, and the other side of the feeding and discharging cover 17 is buckled to the end face of the screen cylinder 6. Since the feeding and discharging cover 17 has no waterproof and dustproof sealing requirement and no high-pressure or low-pressure relief requirement, the installation method and structure of the feeding and discharging cover 17 only need to use a common installation structure, which is a technical problem that can be completely solved by a person skilled in the art according to the prior art, and specific structures of the feeding and discharging cover 17 and the feeding and discharging opening 18 are not shown in the drawings.

When the motor 2 is arranged below the screen drum 6, in order to prevent the operation of the motor 2 and the belt 3 from being affected by the sieved aggregate, a dust baffle 15 is arranged between the motor 2, the belt 3 and the sieving area.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. Aggregate particle diameter screening plant is used in concrete processing, its characterized in that: the novel sieve comprises two supporting frames and a sieve cylinder obliquely arranged between the two supporting frames, wherein the sieve cylinder is a hollow cylinder with closed end faces at two ends, a rotating shaft which is rotatably arranged in the two end faces of the sieve cylinder in a penetrating mode is arranged on the central axis of the sieve cylinder, two ends of the rotating shaft are respectively and fixedly arranged on the supporting frames at two sides, a driving mechanism which is used for driving the sieve cylinder to rotate around the rotating shaft is further arranged outside the sieve cylinder, a plurality of sieve holes are formed in the side wall of the cambered surface of the sieve cylinder, a plurality of supporting rods are further arranged on the middle upper portion of the outer wall of the rotating shaft in the sieve cylinder, the bottoms of the supporting rods are fixedly connected to the rotating shaft, an elastic piece is arranged at the top of the supporting rods, a knocking block is connected to the tail end of the elastic piece, the distance between the knocking block and the inner side wall of the cambered surface of the sieve cylinder is 0-10 mm, a feeding and discharging hole is further formed in the end face at the lower side of the sieve cylinder, and a feeding and discharging cover is arranged in the feeding and discharging hole in an openable mode.

2. The aggregate particle size screening device for concrete processing according to claim 1, wherein: the knocking block is concave on one face which is impacted by the aggregate, the middle of the concave is concave towards the direction of the aggregate impact, one end of the concave, which is close to the inner side wall of the cambered surface of the screen drum, is top, and the top of the concave is convex towards the opposite direction of the aggregate impact.

3. The aggregate particle size screening device for concrete processing according to claim 2, wherein: the top surface of the knocking block is a lifting back cambered surface, so that the thickness of one end of the knocking block facing to aggregate impact is larger than that of the other end.

4. The aggregate particle size screening device for concrete processing according to claim 3, wherein: the distance between the top of the concave surface and the inner side wall of the cambered surface of the screen cylinder is 0-2 mm.

5. The aggregate particle size screening device for concrete processing according to claim 4, wherein: the sieve pores are arranged on the side wall of the cambered surface of the sieve cylinder in a matrix arrangement, and the supporting rods are correspondingly arranged on the rotating shaft, so that each sieve pore passes through the knocking block in the rotating process.

6. The aggregate particle size screening device for concrete processing according to claim 5, wherein: the elastic piece is a spring.

7. The aggregate particle size screening device for concrete processing according to claim 6, wherein: the driving mechanism comprises a driven wheel sleeved on the side wall of the outer cambered surface of the screen drum, and also comprises a fixed motor arranged outside the screen drum, wherein a driving wheel is further arranged on an output shaft of the motor, and the driving wheel is in driving connection with the driven wheel.