CN219850653U

CN219850653U - Recycled concrete raw materials sieving mechanism

Info

Publication number: CN219850653U
Application number: CN202320672214.8U
Authority: CN
Inventors: 黄奔; 黄艳; 蔡石玉; 高青青
Original assignee: Hubei Liuchuan Concrete Co ltd
Current assignee: Hubei Liuchuan Concrete Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-10-20
Anticipated expiration: 2033-03-30

Abstract

The utility model relates to the technical field of concrete production, and discloses a regenerated concrete production raw material screening device which comprises a fixed box, wherein a feed inlet is formed in the top of the fixed box, a supporting mechanism is arranged in the fixed box, a screening plate is arranged on the supporting mechanism, a motor is fixedly arranged at the lower end of the screening plate, an eccentric wheel is fixedly arranged on an output shaft of the motor, a discharge outlet is formed in the right side of the fixed box, the supporting mechanism comprises a fixed frame and a return spring, the fixed frame is fixedly arranged on the inner wall of the fixed box, a plug-in column is fixedly arranged at the lower end of the screening plate, and the plug-in column is movably plugged on the fixed frame. The purpose is that when the sieve is used for sieving concrete, partial aggregate with proper particle size and sieve pore diameter can be clamped into the sieve pores formed in the sieve plate, and once the aggregate is clamped, the vertical vibration device vibrates up and down to drive the sieve plate and the aggregate on the sieve plate to vibrate up and down at the same frequency, so that the problem that the aggregate is difficult to vibrate out from the sieve pores is solved.

Description

Recycled concrete raw materials sieving mechanism

Technical Field

The utility model belongs to the technical field of concrete production, and particularly relates to a regenerated concrete production raw material screening device.

Background

At present, the recycled concrete is new concrete prepared by crushing, cleaning and grading waste concrete blocks, mixing the crushed and graded concrete blocks with the graded concrete blocks according to a certain proportion, partially or completely replacing natural aggregates such as sand and stone, and then adding cement, water and the like.

The existing recycled aggregate crushing equipment, such as a hammer crusher, a jaw crusher, a cone crusher and the like, is characterized in that crushed aggregates with different particle sizes are mixed together, and when recycled concrete is prepared in the later stage, the aggregates with different particle sizes are classified by using screens with different specifications manually; the existing screening plates with different apertures are selected for screening the concrete aggregate in a grading manner, and the screening efficiency is improved by arranging a direct vibrator below the screening plates to realize up-and-down vibration of the screening plates.

To above-mentioned related art, when the sieve is sieving concrete, the aggregate that partial particle diameter and sieve aperture looks are suitable can block to the sieve mesh of seting up on the sieve, and the aggregate once block, and the up-and-down vibration of direct vibrator drives the sieve and the aggregate on it keeps the same frequency vibration from top to bottom to be difficult to shake out the aggregate from the sieve mesh.

Disclosure of Invention

The purpose of the utility model is that: the problem of the sieve when sieving the concrete, the aggregate that partial particle diameter and sieve aperture looks are suitable can block to the sieve mesh of seting up on the sieve, and the aggregate once block, and the up-and-down vibration of direct vibrator drives the sieve and the aggregate on it keeps vibrating from top to bottom with the frequency to be difficult to shake the aggregate out from the sieve mesh is solved.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a recycled concrete production raw materials sieving mechanism, has offered the fixed case of pan feeding mouth including the top, be provided with supporting mechanism in the fixed case, the last screening board that is provided with of supporting mechanism, the lower extreme fixed mounting of screening board has the motor, fixed mounting has the eccentric wheel on the output shaft of motor, the discharge gate has been seted up on the right side of fixed case.

Further limited, the supporting mechanism includes fixed frame and return spring, fixed frame fixed mounting is at the inner wall of fixed box, the lower extreme fixed mounting of screening board has the spliced pole, the spliced pole activity is pegged graft on fixed frame, the lower extreme fixed mounting of spliced pole has the stopper, return spring fixed mounting is at the lower extreme of fixed frame, return spring cover is established on the spliced pole, and return spring's lower extreme meets with the stopper.

Further defined, the front of the fixed box is provided with an opening, and the bottom of the inner wall of the fixed box is fixedly provided with a guide block.

Further limited, the number of the screening plates is two, and the screening plates are sequentially arranged from top to bottom, and the screen mesh size of the screening plate positioned below is smaller than that of the screening plate positioned above.

The utility model adopting the technical scheme has the following advantages:

1. according to the utility model, the supporting mechanism is arranged to support the screening plate, the motor drives the eccentric wheel to rotate so as to drive the screening plate to vibrate, and the supporting force of the supporting mechanism on the screening plate changes along with the reduction of the weight of concrete on the screening plate, so that the vibration frequency changes, and the blocking of the screen holes is avoided.

2. According to the utility model, when the screening plate vibrates to screen concrete, the return spring is stressed and stretched, so that the screening plate moves, the movement range of the screening plate is increased, and the screening efficiency is improved.

Drawings

The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic diagram of a screening apparatus for recycled concrete raw materials;

FIG. 2 is a schematic cross-sectional view of a screening apparatus for recycled concrete raw materials according to the present utility model;

fig. 3 is a schematic view showing the structure of the screening plate and the fixing frame in the screening device for the recycled concrete production raw materials.

The main reference numerals are as follows:

1. a fixed box; 11. an opening; 12. a guide block;

2. a screening plate; 21. a plug-in column; 22. a limiting block;

3. a motor;

4. a fixed frame; 41. and a return spring.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present utility model.

As shown in fig. 1 to 3, the regenerated concrete production raw material screening device comprises a fixed box 1 with a feed inlet at the top, a supporting mechanism is arranged in the fixed box 1, a screening plate 2 is arranged on the supporting mechanism, a motor 3 is fixedly arranged at the lower end of the screening plate 2, an eccentric wheel is fixedly arranged on an output shaft of the motor 3, and a discharge outlet is formed in the right side of the fixed box 1.

The supporting mechanism comprises a fixed frame 4 and a return spring 41, wherein the fixed frame 4 is fixedly arranged on the inner wall of the fixed box 1, the lower end of the screening plate 2 is fixedly provided with a plug-in column 21, the plug-in column 21 is movably plugged on the fixed frame 4, the lower end of the plug-in column 21 is fixedly provided with a limiting block 22, the return spring 41 is fixedly arranged at the lower end of the fixed frame 4, the return spring 41 is sleeved on the plug-in column 21, and the lower end of the return spring 41 is connected with the limiting block 22.

The front of the fixed box 1 is provided with an opening 11, the bottom of the inner wall of the fixed box 1 is fixedly provided with a guide block 12, and the concrete moving to the lowest part can be guided to the opening under the guiding action of the guide block 12, so that the collection is convenient.

The number of the screening plates 2 is two, and the screening plates 2 are sequentially distributed from top to bottom, the mesh size of the screening plates 2 positioned below is smaller than that of the screening plates 2 positioned above, and concrete with different particle sizes can be sequentially screened out.

The application method of the utility model is as follows:

pouring the concrete to be screened into the upper end of the fixed box 1 from the feed inlet, enabling the motor 3 to work, and enabling the output shaft to drive the eccentric wheel to rotate, so that the screening plate 2 vibrates, and screening the concrete;

when the screening plate 2 vibrates, the return spring 41 is stressed to deform, so that the activity amplitude of the screening plate 2 is increased, and the screening efficiency is improved;

along with the reduction of the weight of the concrete on the screening plate 2, the supporting force of the supporting mechanism on the screening plate 2 changes, and at the moment, the vibration frequency changes, so that the blocking of the screen holes is avoided.

The utility model provides a regenerated concrete production raw material screening device. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides a recycled concrete production raw materials sieving mechanism, has offered fixed case (1), its characterized in that of pan feeding mouth including the top: be provided with supporting mechanism in fixed box (1), be provided with screening board (2) on the supporting mechanism, the lower extreme of screening board (2) has motor (3), fixed mounting has the eccentric wheel on the output shaft of motor (3), the discharge gate has been seted up on the right side of fixed box (1).

2. The recycled concrete production raw material screening device according to claim 1, wherein: the supporting mechanism comprises a fixed frame (4) and a return spring (41), wherein the fixed frame (4) is fixedly arranged on the inner wall of the fixed box (1), a plug-in column (21) is fixedly arranged at the lower end of the screening plate (2), the plug-in column (21) is movably plugged on the fixed frame (4), a limiting block (22) is fixedly arranged at the lower end of the plug-in column (21), the return spring (41) is fixedly arranged at the lower end of the fixed frame (4), the return spring (41) is sleeved on the plug-in column (21), and the lower end of the return spring (41) is connected with the limiting block (22).

3. The recycled concrete production raw material screening device according to claim 1, wherein: the front of the fixed box (1) is provided with an opening (11), and the bottom of the inner wall of the fixed box (1) is fixedly provided with a guide block (12).

4. The recycled concrete production raw material screening device according to claim 1, wherein: the number of the screening plates (2) is two, the screening plates are sequentially distributed from top to bottom, and the screen mesh size of the screening plates (2) located below is smaller than that of the screening plates (2) located above.