CN211027001U

CN211027001U - Drum screening device

Info

Publication number: CN211027001U
Application number: CN201922044788.7U
Authority: CN
Inventors: 左勇强
Original assignee: Shijiazhuang Funiu Ready Mixed Concrete Co ltd
Current assignee: Shijiazhuang Funiu Ready Mixed Concrete Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-17
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to the technical field of concrete processing equipment, in particular to a drum screening device, which comprises a drum, a rack, a speed reducer and a motor, wherein the drum is obliquely arranged on the rack, the motor is connected with the drum through the speed reducer, a first protective cover with an arch structure is fixed below the drum on the rack, and a gap for sand to pass through is formed between the drum and the first protective cover; the first protective cover is fixed with brushes which are evenly arranged along the length direction of the first protective cover, and the brushes extend towards the roller and are propped against the roller. The utility model has the advantages of guarantee that sand normally passes through the screen cloth.

Description

Drum screening device

Technical Field

The utility model belongs to the technical field of the technique of concrete processing equipment and specifically relates to a cylinder screening plant is related to.

Background

The concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Since the size of sand particles has an important influence on the strength of concrete, sand added to concrete needs to be sieved before being used as one of the raw materials for preparing concrete.

A common device used in screening sand is a drum screen. Referring to fig. 6, the conventional drum screen consists of a drum 1, a frame 2, a decelerator 3, and a motor 4. The drum 1 is mounted on the frame 2 in an inclined manner. The both ends opening of cylinder 1, the top is the feed inlet, and the bottom is the bin outlet, and the circumference side of cylinder 1 is screen cloth structure. The motor 4 is connected with the roller 1 through a speed reducer 3 by a coupling, and drives the roller 1 to rotate around the axis of the roller. After the materials enter the roller 1, the materials on the screen surface are overturned and rolled due to the inclination and rotation of the roller 1, so that the qualified materials are discharged through the screen on the circumferential side surface of the roller 1, and the unqualified materials are discharged through the discharge hole at the tail part of the roller 1.

When the sand contains certain moisture, the sand is easy to gather in the roller 1, so that the sand cannot be discharged from the screen on the roller 1 and is attached to the screen, the screen is blocked, and the blanking is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder screening plant has alleviateed the condition that sand blockked up the screen cloth.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a roller screening device comprises a roller, a rack, a speed reducer and a motor, wherein the roller is obliquely arranged on the rack, the motor is connected with the roller through the speed reducer, a first protective cover with an arch structure is fixed below the roller on the rack, and a gap for sand to pass through is formed between the roller and the first protective cover; the inner wall of the first protective cover is fixedly provided with brushes which are uniformly arranged along the length direction of the first protective cover, and the brushes extend towards the roller and are propped against the roller.

Through adopting above-mentioned technical scheme, when the cylinder rotated, the brush brushed on the cylinder, played the effect of clearance to the sand that adheres to on the cylinder. The brush extends towards the roller and penetrates through the screen of the roller, and along with the rotation of the roller, the brush brushes off sand blocked on the screen.

The utility model discloses further set up to: the roller is characterized in that a second protective cover of an arch structure is rotatably arranged on the first protective cover, a knocking rod is rotatably arranged on the inner wall of the second protective cover, and the knocking rod can abut against the roller when the second protective cover is buckled on the first protective cover.

Through adopting above-mentioned technical scheme, strike the pole and strike on the cylinder, make the cylinder produce the vibration, will adhere to the sand on the cylinder and shake down, improved the clearance effect to adnexed sand on the cylinder, guaranteed the screening sand efficiency of cylinder.

The utility model discloses further set up to: the plurality of knocking rods are arranged along the length direction of the second protective cover.

Through adopting above-mentioned technical scheme, to adnexed sand clearance more evenly thoroughly on the cylinder, avoid producing the clearance dead angle, improved the effect of clearance.

The utility model discloses further set up to: and springs are respectively fixed at two ends of the knocking rod, one end of each spring is fixed on the knocking rod, the other end of each spring is fixed on the inner wall of the second protective cover, and the knocking rods extend out along the radial direction of the second protective cover when the springs are in a natural state.

Through adopting above-mentioned technical scheme, promoted the dynamics of strikeing of beating the pole, strengthened the clearance effect of beating the pole to adnexed sand on the cylinder.

The utility model discloses further set up to: the novel protective hood is characterized in that a feed opening is formed in the bottom end of the first protective hood along the length direction, a feed pipe is fixed to the feed opening on the first protective hood, a rotating roller is arranged on the feed pipe in a rotating mode, two ends of the rotating roller penetrate through the feed pipe and stretch out of the feed pipe, and rotating blades are fixed to the rotating roller.

Through adopting above-mentioned technical scheme, prevent that sand from adhering to on the inner wall of unloading pipe when unloading pipe discharge, influence the unobstructed nature of unloading pipe. Through rotatory roller, the attached sand on the inner wall of blanking pipe is scraped off to the rotary vane, promotes the smoothness when the sand unloading.

The utility model discloses further set up to: the rotary vanes are fixed on the circumferential surface of the rotary roller and uniformly dispersed along the radial direction.

Through adopting above-mentioned technical scheme, make sand can normally carry out the unloading through the unloading pipe, the spiral leaf is scattered opens all around, can not exert an influence to the normal unloading of unloading pipe.

The utility model discloses further set up to: and a rocker is fixed at one end of the rotating roller outside the blanking pipe.

Through adopting above-mentioned technical scheme, the staff drives rotatory roller through rotating the rocker and rotates, sweeps the sand on the belly unloading pipe, makes things convenient for the staff to drive rotatory roller and rotates.

The utility model discloses further set up to: the rocker is a Z-shaped rod piece.

Through adopting above-mentioned technical scheme, more make things convenient for the staff to wave the rocker, and then drive the rotation of rotatory roller.

To sum up, the utility model discloses a beneficial technological effect does:

1. the sand attached to the roller can be brushed off through the brush, the knocking rod is knocked on the roller along with the rotation of the roller, so that the roller vibrates, large blocks of sand attached to the roller are vibrated off, and the sand cleaning effect is guaranteed;

2. can sweep the sand that adheres to in unloading pipe department through the rotatory roller that sets up at the feed opening, unobstructed nature when having guaranteed the unloading.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the second protective cover of the present invention in a locked state.

Fig. 4 is a schematic view of the present invention in a cut-open state.

Fig. 5 is a front view of the present invention.

Fig. 6 is a background art drawing.

Reference numerals: 1. the device comprises a roller, a frame, a speed reducer, a motor, a first protective cover, a second protective cover, a motor 51, a first protective cover, a second protective cover 52, a blanking pipe 54, a blanking hole 61, a brush 62, a knocking rod 63, a spring 71, a rotating roller 72, a rotary vane 73 and a rocker.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 5, a drum screening device according to the present invention includes a drum 1, a frame 2, a speed reducer 3, and a motor 4. The cylinder 1 is obliquely arranged on the frame 2, the two ends of the cylinder 1 are opened, the top end is a feed inlet, and the bottom end is a discharge outlet. The circumferential side surface of the roller 1 is of a screen mesh structure. The motor 4 is connected with the roller 1 through a speed reducer 3 by a coupling, and drives the roller 1 to rotate around the axis of the roller. A first protective cover 51 with an arch structure is fixed on the frame 2 below the roller 1, and a gap for sand to pass through exists between the first protective cover 51 and the roller 1. A plurality of brushes 61 are fixed on the inner wall of the first protection cover 51, and the brushes 61 are uniformly arranged along the length direction of the first protection cover 51. The brush 61 extends in the direction of the drum 1 and abuts against the drum 1.

Referring to fig. 3, the first shield 51 is rotatably provided with a second shield 52 having an arch structure. Referring to fig. 4, a knocking lever 62 is rotatably provided on an inner wall of the second shield 52, and the knocking lever 62 is hinged with the second shield 52. The rotational plane of the tapping rod 62 is perpendicular to the length direction of the second shield 52. The plurality of tapping rods 62 are provided along the length of the second cover 52. Referring to fig. 2, springs 63 are fixed to both ends of the striking rod 62, respectively, and one end of each spring 63 is fixed to the striking rod 62, and the other end is fixed to the inner wall of the second shield 52. When the spring 63 is in a natural state, the tapping rod 62 extends in a radial direction of the second shield 52. When the second hood 52 is snapped on the first hood 51, the knocking lever 62 can abut on the drum 1.

Referring to fig. 4 and 5, the lower end of the first shield 51 is opened with a feed opening 54 along the length direction. A feeding pipe 53 having a square structure is fixed to the first hood 51 at the feeding port 54, and a rotary roller 71 is rotatably provided on the feeding pipe 53. Two ends of the rotating roller 71 penetrate through the blanking pipe 53 and extend outwards, and cylindrical rotating vanes 72 are uniformly and divergently fixed on the circumferential surface of the rotating roller 71 in the radial direction. A rocker 73 is fixed at one end of the rotating roller 71, which is positioned outside the blanking pipe 53, and the rocker 73 is of a Z-shaped rod structure, so that a worker can conveniently hold and rotate the rotating roller.

The implementation principle of the embodiment is as follows: the second guard 52 is engaged with the first guard 51 to operate the motor 4. The sand which is not screened is discharged from a feeding port of the roller 1, and after the sand enters the roller 1, the sand on the screen surface is overturned and rolled due to the inclination and rotation of the roller 1. As the drum 1 rotates, the brush 61 of the first protective cover 51 brushes on the screen surface of the drum 1, sweeping the adhered sand. The knocking rod 62 on the second shield 52 continuously knocks on the drum 1 to shake off the sand adhered to the drum 1. The qualified sand screened from the drum 1 falls on the first screen 51 and falls from the blanking pipe 53. When wet sand is attached to the wall of the discharging pipe 53, workers can hang the sand on the inner wall of the discharging pipe 53 by rotating the rocker 73 to ensure normal discharging.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a cylinder screening plant, includes cylinder (1), frame (2), reduction gear (3) and motor (4), cylinder (1) slope is installed in frame (2), motor (4) link together its characterized in that through reduction gear (3) and cylinder (1): a first protective cover (51) with an arch structure is fixed on the rack (2) below the roller (1), and a gap for sand to pass through is formed between the roller (1) and the first protective cover (51); the inner wall of the first protective cover (51) is fixedly provided with a plurality of brushes (61), the brushes (61) are uniformly arranged along the length direction of the first protective cover (51), and the brushes (61) extend towards the roller (1) and are propped against the roller (1).

2. A drum screening device according to claim 1, wherein: the roller is characterized in that a second protective cover (52) of an arch structure is rotatably arranged on the first protective cover (51), a knocking rod (62) is rotatably arranged on the inner wall of the second protective cover (52), and when the second protective cover (52) is buckled on the first protective cover (51), the knocking rod (62) can abut against the roller (1).

3. A drum screening device according to claim 2, wherein: the knocking rods (62) are arranged along the length direction of the second protective cover (52).

4. A drum screening device according to claim 3, wherein: two ends of the knocking rod (62) are respectively fixed with a spring (63), one end of each spring (63) is fixed on the knocking rod (62), the other end of each spring (63) is fixed on the inner wall of the second protective cover (52), and when the springs (63) are in a natural state, the knocking rods (62) extend out along the radial direction of the second protective covers (52).

5. A drum screening device according to claim 1, wherein: first protection casing (51) bottom is opened along length direction has feed opening (54), be fixed with unloading pipe (53) in feed opening (54) on first protection casing (51), it is provided with rotatory roller (71) to rotate on unloading pipe (53), rotatory roller (71) both ends run through unloading pipe (53) and stretch out, be fixed with on rotatory roller (71) and revolve leaf (72).

6. A drum screening device according to claim 5, wherein: the rotary vanes (72) are fixed to the circumferential surface of the rotary roller (71) and uniformly diverge in the radial direction.

7. A drum screening device according to claim 5, wherein: a rocker (73) is fixed at one end of the rotating roller (71) outside the blanking pipe (53).

8. A drum screening device according to claim 7, wherein: the rocker (73) is a Z-shaped rod piece.