CN219073552U - Crushed stone screening device - Google Patents

Abstract

The utility model relates to the field of screening equipment, in particular to a crushed stone screening device which comprises a mounting plate and a screen plate, wherein one side of the screen plate is connected with a driving unit, and a roll shaft is arranged between the screen plate and the mounting plate; the sieve plate is provided with a plurality of hole groups, each hole group comprises a plurality of sieve holes which are transversely distributed at intervals, the bottom of the sieve plate is provided with a rack, and the outer sides of the racks are provided with limiting plates; the roller shaft is provided with a plurality of discs, a plurality of bulges are uniformly distributed on the discs, two ends of the roller shaft are connected with the mounting plate through bearing seats, two end parts of the roller shaft are connected with gears, and the gears are meshed with the gears; the mounting plate comprises a vertical plate and a bottom plate, wherein the vertical plate is provided with a groove, and the limiting plate is positioned in the groove. According to the utility model, broken stone is continuously ejected out by the bulges on the roller shaft in the vibration process of the screen plate, so that the screen holes are prevented from being blocked, the manual blocking removal is performed without stopping the screen plate, and the screening efficiency is increased.

Description

Crushed stone screening device

Technical Field

The utility model relates to the field of screening equipment, in particular to a crushed stone screening device.

Background

In the construction process of domestic highway engineering, a large amount of broken stone is required for the production of concrete, the construction of graded broken stone layers and the daily maintenance of roads. When highway is built in mountain areas, due to the fact that the problems of long transportation distance, difficult transportation, high price and the like exist in purchasing broken stone materials, raw stones excavated by slag discharging in tunnel holes and deep-excavation roadbed are commonly utilized, broken stone processing is carried out in a broken stone field, and broken stones with different particle sizes are needed to be screened out after broken stone processing equipment is built for the raw stones so as to be used for concrete with different strength grades.

The existing screening device can screen according to different particle sizes, but in the screening process, broken stones with the same size as the sieve holes are easy to clamp on the screen, so that the screen is blocked, and at the moment, the screening device is required to stop for manual blocking removal, so that the screening efficiency is affected.

Disclosure of Invention

The utility model provides a broken stone screening device for solving the problem that the existing screening equipment is easy to block and causes the manual blocking removal of a machine halt, broken stone in a screen hole is continuously ejected out by a protrusion on a roll shaft in the vibration process of a screen plate, so that the screen hole is prevented from being blocked, the manual blocking removal is carried out without the machine halt, and the screening efficiency is improved.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

the broken stone screening device comprises two symmetrically arranged mounting plates and a screen plate arranged between the two mounting plates, wherein one side of the screen plate is connected with a driving unit, and a roll shaft is arranged between the screen plate and the mounting plates;

the sieve plate is provided with a plurality of hole groups side by side, each hole group comprises a plurality of sieve holes which are transversely distributed at intervals, racks are arranged on the left side and the right side of the bottom of the sieve plate, and limiting plates are arranged on the outer sides of the two racks;

the roller shaft is provided with a plurality of discs at intervals along the axial direction, the circumferential surfaces of the discs are uniformly provided with a plurality of protrusions, one of the protrusions is inserted into a corresponding sieve hole, two ends of the roller shaft are connected with the mounting plate through bearing blocks, two end parts of the roller shaft penetrate through the bearing blocks and are connected with gears, and the gears are meshed with racks;

the mounting plate comprises a vertical plate and a bottom plate positioned below the vertical plate, wherein the vertical plate is provided with a groove, and the limiting plate is positioned in the groove.

Further, the drive unit includes the motor, with motor output shaft fixed connection's rolling disc and connecting rod, the rolling disc outside eccentric is provided with the slider, the connecting rod includes horizontal portion and is located the perpendicular portion of horizontal portion one end, the horizontal portion other end links to each other with the sieve, perpendicular portion middle part has seted up the bar hole, the slider is located the bar downthehole.

Further, two mounting panel one end is connected with the diaphragm jointly, the via hole has been seted up on the diaphragm, the connecting rod passes behind the via hole rotate with the sieve and be connected, further spacing through the via hole for the connecting rod can be steady drive the sieve and control the motion.

Further, four baffles are arranged around the upper part of the screen plate to prevent broken stones from falling off during vibration.

Further, the bottom of one baffle is rotationally connected with the sieve plate, and the top of the baffle is connected with the tops of two adjacent baffles through buckles.

Further, the supporting legs are arranged below the mounting plate and used for supporting the mounting plate and the screen plate.

Further, the cross section of the sieve holes is of a trapezoid structure with large lower part and small upper part, so that the protrusions above the discs can be conveniently inserted into the sieve holes.

Further, the bearing seat is fixedly arranged on the bottom plate, and the roll shaft is fixed.

Through the technical scheme, the utility model has the beneficial effects that:

according to the utility model, the roller shaft is arranged below the screen plate, and the plurality of discs with the protrusions are arranged on the roller shaft, so that the roller shaft can be driven to rotate when the screen plate vibrates leftwards and rightwards, the protrusions on the discs are inserted into the screen holes on the screen plate, and therefore broken stones blocked in the screen holes are ejected out to achieve the anti-blocking effect.

According to the utility model, the rack is arranged at the bottom of the sieve plate and is meshed with the gear at the end part of the roll shaft, so that the protrusions on the disc can be inserted into the sieve holes, and the stability of the device is enhanced.

Drawings

FIG. 1 is a schematic view of an assembly of a screening apparatus for crushed stone according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a crushed stone screening apparatus according to the present utility model;

FIG. 3 is an enlarged schematic view of the crushed stone screening device of the present utility model at A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of a screening apparatus for crushed stone according to the present utility model;

FIG. 5 is an enlarged schematic view of the crushed stone screening device of the present utility model at B in FIG. 4;

FIG. 6 is an exploded view of a screening apparatus for crushed stone according to the present utility model;

fig. 7 is an enlarged schematic view of the crushed stone screening device of the present utility model at C in fig. 6.

The reference numerals in the drawings are:

1 is a mounting plate, 2 is a screen plate, 3 is a roll shaft, 4 is a rack, 5 is a limiting plate, 6 is a disc, 7 is a bearing seat, 8 is a gear, 9 is a motor, 10 is a rotating disc, 11 is a connecting rod, 12 is a sliding block, 13 is a transverse plate, 14 is a baffle, 15 is a supporting leg, and 16 is a buckle.

Detailed Description

The utility model is further described with reference to the drawings and detailed description which follow:

in the description of the present utility model, it should be understood that the terms "left", "right", "upper", "lower", "lateral", "vertical", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1 to 7, the crushed stone screening device comprises two symmetrically arranged mounting plates 1 and a screen plate 2 arranged between the two mounting plates 1, wherein one side of the screen plate 2 is connected with a driving unit, and a roll shaft 3 is arranged between the screen plate 2 and the mounting plates 1;

a plurality of hole groups are formed in the sieve plate 2 side by side, each hole group comprises a plurality of sieve holes which are transversely distributed at intervals, racks 4 are arranged on the left side and the right side of the bottom of the sieve plate 2, and limiting plates 5 are arranged on the outer sides of the two racks 4;

a plurality of discs 6 are arranged on the roll shaft 3 at intervals along the axis direction of the roll shaft, a plurality of protrusions are uniformly distributed on the circumferential surface of each disc 6, one protrusion is inserted into a corresponding sieve hole, two ends of the roll shaft 3 are connected with the mounting plate 1 through bearing blocks 7, two end parts of the roll shaft 3 penetrate through the bearing blocks 7 and are connected with gears 8, and the gears 8 are meshed with the racks 4;

the mounting plate 1 comprises a vertical plate and a bottom plate positioned below the vertical plate, wherein a groove is formed in the vertical plate, and the limiting plate 5 is positioned in the groove.

In addition, the drive unit includes motor 9, with motor 9 output shaft fixed connection's rolling disc 10 and connecting rod 11, rolling disc 10 outside eccentric is provided with slider 12, connecting rod 11 includes horizontal portion and is located the perpendicular portion of horizontal portion one end, the horizontal portion other end links to each other with sieve 2, the bar hole has been seted up at perpendicular portion middle part, slider 12 is located the bar hole, drives sieve 2 through the drive unit and vibrates about, accomplishes the purpose of rubble screening.

Specifically, two mounting panel 1 one end is connected with diaphragm 13 jointly, the via hole has been seted up on the diaphragm 13, connecting rod 11 passes behind the via hole rotate with sieve 2 and be connected, further spacing through the via hole for connecting rod 11 can be steady drive sieve 2 left and right movement.

In this embodiment, four baffles 14 are arranged around the periphery above the screen plate 2 to prevent broken stones from falling during vibration.

In this embodiment, one of the baffle plates 14 is rotatably connected to the screen plate 2 at the bottom, and the top is connected to the tops of two adjacent baffle plates 14 through a buckle 16, and by providing a movable baffle plate 14, the crushed stone above the screen plate 2 can be conveniently taken out after the crushed stone screening is completed.

In this embodiment, a supporting leg 15 is disposed below the mounting plate 1, and is used for supporting the mounting plate 1 and the screen plate 2.

In this embodiment, the cross section of the sieve mesh is a trapezoid structure with a large bottom and a small top, so that the protrusions above the disc 6 can be conveniently inserted into the sieve mesh.

In this embodiment, the bearing seat 7 is fixedly disposed on the bottom plate, and fixes the roller shaft 3.

In practical application, please refer to fig. 1-7 again, firstly, paving crushed stones to be screened above the screen plate 2, and then starting the driving unit to screen the crushed stones;

the motor 9 drives the rotating disc 10 and the sliding block 12 on the rotating disc 10 to rotate, the sliding block 12 slides in the strip-shaped hole on the connecting rod 11 while rotating, at the moment, the connecting rod 11 is limited by the through hole on the transverse plate 13, so that the sliding block 12 only can drive the connecting rod 11 to move left and right, and the sieve plate 2 is pulled to move left and right;

when sieve 2 side-to-side motion, sieve 2 bottom rack 4 can drive gear 8 and rotate to make disc 6 on roller 3 and the roller 3 rotate, disc 6 in the rotation in-process, the arch of its top can insert in turn in different sieve meshes, when the arch on disc 6 inserts in the sieve mesh, can ejecting the rubble of jam sieve mesh, thereby accomplish the purpose of clear stifled.

After screening is completed, the buckle 16 is opened, the baffle plate 14 is rotated to open, and broken stones above the screen are removed, so that the next round of screening can be performed.

The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present utility model.

Claims (8)

1. The stone crushing and screening device comprises two symmetrically arranged mounting plates (1) and a screen plate (2) arranged between the two mounting plates (1), and is characterized in that one side of the screen plate (2) is connected with a driving unit, and a roll shaft (3) is arranged between the screen plate (2) and the mounting plates (1);

a plurality of hole groups are arranged on the sieve plate (2) side by side, each hole group comprises a plurality of sieve holes which are transversely distributed at intervals, racks (4) are arranged on the left side and the right side of the bottom of the sieve plate (2), and limiting plates (5) are arranged on the outer sides of the two racks (4);

a plurality of discs (6) are arranged on the roll shaft (3) at intervals along the axial direction of the roll shaft, a plurality of protrusions are uniformly distributed on the circumferential surface of each disc (6), one protrusion is inserted into a corresponding sieve hole, two ends of the roll shaft (3) are connected with the mounting plate (1) through bearing blocks (7), two end parts of the roll shaft (3) penetrate through the bearing blocks (7) and then are connected with gears (8), and the gears (8) are meshed with the racks (4);

the mounting plate (1) comprises a vertical plate and a bottom plate positioned below the vertical plate, a groove is formed in the vertical plate, and the limiting plate (5) is positioned in the groove.

2. The crushed stone screening device according to claim 1, characterized in that the driving unit comprises a motor (9), a rotating disc (10) fixedly connected with an output shaft of the motor (9) and a connecting rod (11), a sliding block (12) is eccentrically arranged on the outer side of the rotating disc (10), the connecting rod (11) comprises a transverse part and a vertical part positioned at one end of the transverse part, the other end of the transverse part is connected with the screen plate (2), a strip-shaped hole is formed in the middle of the vertical part, and the sliding block (12) is positioned in the strip-shaped hole.

3. A crushed stone screening device according to claim 2, characterized in that one end of each mounting plate (1) is connected with a transverse plate (13), the transverse plates (13) are provided with through holes, and the connecting rods (11) penetrate through the through holes and are connected with the screen plates (2) in a rotating manner.

4. A crushed stone screening device according to claim 1, characterized in that four baffles (14) are arranged around the upper part of the screen plate (2).

5. The crushed stone screening device according to claim 4, wherein the bottom of one baffle (14) is rotatably connected with the screen plate (2), and the top of the baffle is connected with the tops of two adjacent baffles (14) through a buckle (16).

6. A crushed stone screening device according to claim 1, characterized in that the mounting plate (1) is provided with legs (15) below.

7. The crushed stone screening device according to claim 1, wherein the cross section of the screen holes is of a trapezoid structure with a large bottom and a small top.

8. A crushed stone screening device according to claim 1, characterized in that the bearing housing (7) is fixedly arranged on the bottom plate.

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