Ultrafine sand screening device for fine-grained concrete production

Abstract

The utility model belongs to the technical field of concrete production, and particularly relates to a superfine sand screening device for fine-grained concrete production, which comprises a box body, a motor arranged above one side of the box body, a rotating shaft arranged at the output end of the motor, a bearing seat arranged at one end of the rotating shaft, and auger blades arranged on one side of the outer surface of the rotating shaft. A first supporting plate is arranged on one side of the outer surface of the screen drum, and a second supporting plate is arranged on the other side of the outer surface of the screen drum. Through mutual cooperation of the motor, the auger blade, the screen drum, the stock bin, the coarse sand charging vehicle and the superfine sand charging vehicle, the problem that after screening is finished, manual sand discharging operation is needed is solved, through mutual cooperation of the dust removal box, the dust collection box, the filter screen, the dust collection pipe, the dust suction pipeline, the extension pipeline and the draught fan, the device has the dust removal function, and the dust removal efficiency is improved. And the problem that a large amount of dust is generated when the device is used for screening is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete production technical field, concretely to a kind of superfine sand screening device for fine-grained concrete production. BACKGROUND

[0002] In order to coordinate the working strength and compressive strength of concrete, a certain proportion of superfine sand is usually mixed in concrete. Superfine sand not only can improve the lubricating effect of machine-made sand, but also can improve the slump of concrete, so that the concrete can reach the predetermined strength while having good working performance.

[0003] The existing patent number CN219664429U provides a sand and stone screening device for superfine sand concrete production. The sand and stone screening device includes a screen cylinder (1), a screen mesh (2), a suspension bracket (3), a pulse jet pipe (4), and a drive combination (5). The screen mesh (2) is arranged at the bottom of the screen cylinder (1). The upper part of the screen cylinder (1) is provided with the suspension bracket (3). The screen cylinder (1) and the suspension bracket (3) are rotationally connected, and their axes are inclined relative to the horizontal plane. The suspension bracket (3) is provided with the pulse jet pipe (4). One side of the pulse jet pipe (4) is provided with a nozzle (41) opposite to the screen mesh (2). The other side of the suspension bracket (3) is provided with the drive combination (5) for rotating the screen cylinder (1). The sand and stone screening device of the utility model is used in superfine sand screening, has the advantages of uniform screening, avoiding blockage, and high screening efficiency.

[0004] The existing technology has the following problems:

[0005] 1. The existing superfine sand screening device for fine-grained concrete production cannot automatically discharge the remaining coarse sand after screening during the screening process. This also leads to the need for manual sand discharge operation after the screening ends, which is time-consuming and labor-intensive, reduces work efficiency, and increases the labor intensity of workers.

[0006] 2. The existing superfine sand screening device for fine-grained concrete production does not have a dust removal function. This also leads to the generation of a large amount of dust during screening, which not only affects the surrounding environment but also poses a great risk to the health of on-site workers, reduces work safety, and cannot meet the use requirements. INVENTION CONTENTS

[0007] In view of the shortcomings of the prior art, the utility model provides a superfine sand screening device for fine-grained concrete production, which solves the problems of the existing technology, such as the inability to automatically discharge the remaining coarse sand after screening during the screening process, which leads to the need for manual sand discharge operation after the screening ends, and the lack of dust removal function, which leads to the generation of a large amount of dust during screening, which not only affects the surrounding environment but also poses a great risk to the health of on-site workers.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: A kind of superfine sand screening device for fine-grained concrete production, including box, motor is arranged on the side upper portion of the box, rotating shaft is arranged in the output end of the motor, bearing seat is arranged in the one end of the rotating shaft, auger blade is arranged in the one side of the outer surface of the rotating shaft, sieve cylinder is arranged in the outer surface of the rotating shaft of auger blade, first support plate is arranged in the one side of the outer surface of the sieve cylinder, second support plate is arranged in the other side of the outer surface of the sieve cylinder, bunker is arranged in the one side of the top of the sieve cylinder, coarse sand charging trolley is arranged in the one side below the inside of the box, superfine sand charging trolley is arranged in the other side below the inside of the box, dust removal assembly is arranged in the one side of the top of the box.

[0009] As a preferred technical scheme of the utility model, one end of the rotating shaft is fixedly connected with the motor, and the other end of the rotating shaft penetrates through the box and the sieve cylinder and is rotationally connected with the bearing seat.

[0010] As a preferred technical scheme of the utility model, the two ends of the sieve cylinder are respectively mounted on the first support plate and the second support plate through fixed connection, the size of the sieve cylinder is matched with the size of the auger blade, and the auger blade is integrally arranged with the rotating shaft.

[0011] As a preferred technical scheme of the utility model, the position of the superfine sand charging trolley is correspondingly arranged with the position of the sieve cylinder, and the size of the superfine sand charging trolley, the size of the coarse sand charging trolley and the size of the box are matched.

[0012] As a preferred technical scheme of the utility model, the dust removal assembly comprises a dust removal box, a dust collecting box is arranged at the bottom in the dust removal box, a filter screen is arranged on one side in the dust removal box, a dust collecting pipe is arranged in the middle of the top of the dust removal box, a dust suction pipeline is arranged at the top end of the dust collecting pipe, an extension pipeline is arranged on one side of the dust suction pipeline, and a fan is arranged on one side of the dust removal box.

[0013] As a preferred technical scheme of the utility model, the filter screen is mounted on the dust removal box through bolts, and the position of the filter screen is correspondingly arranged with the position of the fan.

[0014] As a preferred technical scheme of the utility model, the dust suction pipeline is mounted on the dust collecting pipe through fixed connection, the dust suction pipeline is integrally arranged in U shape, the positions of the two ends of the dust suction pipeline are correspondingly arranged with the positions of the coarse sand charging trolley and the superfine sand charging trolley respectively, the dust suction pipeline is integrally arranged with the extension pipeline, and the position of the extension pipeline is correspondingly arranged with the position of the bunker.

[0015] Compared with the prior art, the utility model provides a kind of superfine sand screening device for fine-grained concrete production, with the following beneficial effects:

[0016] 1. The superfine sand screening device for fine-grained concrete production, through the setting of the motor, the auger blade, the sieve cylinder, the stock bin, the coarse sand loading vehicle and the superfine sand loading vehicle, when the sand and gravel enters the sieve cylinder through the stock bin, the motor is started to control the rotation of the auger blade, so that the sand and gravel rolls uniformly in the sieve cylinder and displaces to the left, and in the displacement process, the superfine sand in the sand and gravel falls into the superfine sand loading vehicle through the sieve hole of the sieve cylinder, then the remaining coarse sand in the sand and gravel is blocked by the sieve cylinder and displaces to the left following the rotation of the auger blade, and finally falls into the coarse sand loading vehicle, and finally the corresponding loading vehicles of the superfine sand and the coarse sand are pushed out, so that the device can automatically discharge and recycle the remaining coarse sand after screening, and can also automatically recycle the screened superfine sand, so that the problem of manual sand discharging operation after the screening of the device is avoided, time and labor are saved, the working efficiency is improved, and the labor amount of the workers is reduced.

[0017] 2. The superfine sand screening device for fine-grained concrete production, through the setting of the dust removal box, the dust collection box, the filter screen, the dust collection pipe, the dust suction pipeline, the extension pipeline and the fan, during the screening process, the coarse sand loading vehicle and the superfine sand loading vehicle are pushed into the box body respectively, so that the dust generated during the screening of the sand and gravel in the box body is prevented from escaping, then the fan is started to discharge the airflow in the dust removal box, then the dust suction pipeline and the extension pipeline are matched with each other, so that a large amount of fine dust particles generated in the box body and the stock bin position are absorbed and collected to the dust removal box through the dust collection pipe, finally the fine dust particles in the dust removal box are filtered through the filter screen, so that the fine dust particles are prevented from being discharged by the fan, and the device has the function of dust removal, the problem of a large amount of dust generated during the screening of the device is avoided, the safety of the work is improved, and the use requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the box body of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the sieve cylinder of the utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the dust removal box of the utility model.

[0022] In the figure: 1, box; 2, motor; 3, rotating shaft; 4, bearing seat; 5, auger blade; 6, screen cylinder; 7, first support plate; 8, second support plate; 9, hopper; 10, coarse sand loading vehicle; 11, superfine sand loading vehicle; 12, dust removal assembly; 121, dust removal box; 122, dust collection box; 123, filter screen; 124, dust collection pipe; 125, dust suction pipeline; 126, extension pipeline; 127, fan. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] With reference to Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment: a superfine sand screening device for fine particle concrete production, including box 1, the top of one side of box 1 is provided with motor 2, and the output end of motor 2 is provided with rotating shaft 3, and one end of rotating shaft 3 is provided with bearing seat 4, and the outer surface of rotating shaft 3 is provided with auger blade 5 on one side, and the outer surface of rotating shaft 3 is provided with screen cylinder 6 outside auger blade 5, and the outer surface of screen cylinder 6 is provided with first support plate 7 on one side, and the outer surface of screen cylinder 6 is provided with second support plate 8 on the other side, and the top of one side of screen cylinder 6 is provided with hopper 9, and the lower side of inside of box 1 is provided with coarse sand loading vehicle 10, and the other lower side of inside of box 1 is provided with superfine sand loading vehicle 11, and the top of one side of box 1 is provided with dust removal assembly 12;One end of rotating shaft 3 is fixedly connected with motor 2, and the other end of rotating shaft 3 penetrates through box 1 and screen cylinder 6 and is rotationally connected with bearing seat 4;

[0025] Specifically: it is convenient to support and limit rotating shaft 3, and the stability of rotating shaft 3 when rotating is improved.

[0026] With reference to Figure 1 , Figure 2 and Figure 3 , the two ends of screen cylinder 6 are respectively installed on first support plate 7 and second support plate 8 through fixed connection, the size of screen cylinder 6 is matched with the size of auger blade 5, and auger blade 5 is integrally arranged with rotating shaft 3;The position of superfine sand loading vehicle 11 is correspondingly arranged with the position of screen cylinder 6, and the size of superfine sand loading vehicle 11, the size of coarse sand loading vehicle 10 and the size of box 1 are matched;

[0027] Specifically, during displacement, the superfine sand in the sandstone falls directly into the superfine sand loading vehicle 11 through the sieve holes on the sieve cylinder 6, and the remaining coarse sand in the sandstone is blocked by the sieve cylinder 6 and displaced to the left along with the rotation of the auger blade 5 until it falls into the coarse sand loading vehicle 10. Finally, by pushing the corresponding loading vehicles of the superfine sand and the coarse sand out, they can be used at the same time. Through the cooperation of the coarse sand loading vehicle 10 and the superfine sand loading vehicle 11, dust dispersion during sandstone screening in the box 1 is prevented.

[0028] With reference to Figure 1 and Figure 4 , the dust removal assembly 12 comprises a dust removal box 121, a dust collection box 122 is arranged at the bottom of the inside of the dust removal box 121, a filter screen 123 is arranged at one side of the inside of the dust removal box 121, a dust collection pipe 124 is arranged at the top of the dust removal box 121, a dust suction pipe 125 is arranged at the top end of the dust collection pipe 124, an extension pipe 126 is arranged at one side of the dust suction pipe 125, and a fan 127 is arranged at one side of the dust removal box 121; the filter screen 123 is installed on the dust removal box 121 by bolts, and the position of the filter screen 123 corresponds to the position of the fan 127.

[0029] Specifically, the filter screen 123 is arranged to filter fine dust particles in the dust removal box 121 to prevent them from being discharged by the fan 127.

[0030] With reference to Figure 1 and Figure 4 , the dust suction pipe 125 is installed on the dust collection pipe 124 by fixed connection, the dust suction pipe 125 is arranged in a U shape as a whole, the positions of the two ends of the dust suction pipe 125 correspond to the positions of the coarse sand loading vehicle 10 and the superfine sand loading vehicle 11 respectively, the dust suction pipe 125 is integrally arranged with the extension pipe 126, and the position of the extension pipe 126 corresponds to the position of the stock bin 9.

[0031] Specifically, the dust suction pipe 125 and the extension pipe 126 can cooperate to absorb a large amount of fine dust particles generated inside the box 1 and at the position of the stock bin 9, and the fine dust particles can be collected in the dust removal box 121 through the dust collection pipe 124.

[0032] It should be noted that (the motor 2 and the fan 127) are well known or can be known to those skilled in the relevant technical field, so they are not described here.

[0033] The working principle and use process of the utility model: when the sand and stone enters into the sieve cylinder 6 after the stock bin 9, the auger blade 5 on the rotating shaft 3 can be rotated by starting the motor 2, so that the sand and stone rolls uniformly and displaces left in the sieve cylinder 6, and in the displacement process, the superfine sand in the sand and stone can directly fall into the superfine sand loading vehicle 11 through the sieve hole on the sieve cylinder 6, then the remaining coarse sand in the sand and stone is blocked by the sieve cylinder 6 and displaces left following the rotation of the auger blade 5, until falling into the coarse sand loading vehicle 10, finally by pushing the loading vehicles corresponding to the superfine sand and coarse sand out, it can be used;

[0034] In the screening process, the coarse sand loading vehicle 10 and the superfine sand loading vehicle 11 are pushed into the box body 1 respectively, which can prevent dust from escaping when the sand and stone in the box body 1 is screened, then the fan 127 in the dust removal assembly 12 is started to exhaust the airflow in the dust removal box 121, then through the cooperation of the dust suction pipeline 125 and the extension pipeline 126, a large amount of fine dust particles generated in the position of the box body 1 and the stock bin 9 can be absorbed, and collected into the dust removal box 121 through the dust collection pipe 124, finally through sedimentation, it falls into the dust collection box 122 for subsequent treatment, and the fine dust particles in the dust removal box 121 are filtered through the filter screen 123 to prevent them from being exhausted by the fan 127.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A fine sand screening device for fine-grained concrete production, comprising a housing (1), characterized in that: A motor (2) is provided on the upper side of one side of the box (1). A rotating shaft (3) is provided at the output end of the motor (2). A bearing seat (4) is provided at one end of the rotating shaft (3). An auger blade (5) is provided on one side of the outer surface of the rotating shaft (3). A screen cylinder (6) is provided on the outer surface of the rotating shaft (3) and the auger blade (5). A first support plate (7) is provided on one side of the outer surface of the screen cylinder (6). A second support plate (8) is provided on the other side of the outer surface of the screen cylinder (6). A hopper (9) is provided on one side of the top of the screen cylinder (6). A coarse sand loading car (10) is provided on one side of the lower interior of the box (1). An ultrafine sand loading car (11) is provided on the other side of the lower interior of the box (1). A dust removal component (12) is provided on one side of the top of the box (1).

2. The ultrafine sand screening device for fine-grained concrete production according to claim 1, characterized in that: One end of the rotating shaft (3) is fixedly connected to the motor (2), and the other end of the rotating shaft (3) passes through the box (1) and the screen cylinder (6) and is rotatably connected to the bearing seat (4).

3. The ultrafine sand screening device for fine-grained concrete production according to claim 1, characterized in that: The two ends of the screen cylinder (6) are fixedly connected to the first support plate (7) and the second support plate (8) respectively. The size of the screen cylinder (6) is adapted to the size of the auger blade (5). The auger blade (5) and the rotating shaft (3) are integrated.

4. The ultrafine sand screening device for fine-grained concrete production according to claim 1, characterized in that: The position of the ultrafine sand loading car (11) is corresponding to the position of the screen cylinder (6), and the size of the ultrafine sand loading car (11), the size of the coarse sand loading car (10), and the size of the box body (1) are adapted to each other.

5. The ultrafine sand screening device for fine-grained concrete production according to claim 1, characterized in that: The dust removal assembly (12) includes a dust removal box (121), a dust collection box (122) is provided at the bottom of the dust removal box (121), a filter screen (123) is provided on one side of the dust removal box (121), a dust collection pipe (124) is provided in the middle of the top of the dust removal box (121), a dust suction pipe (125) is provided at the top of the dust collection pipe (124), an extension pipe (126) is provided on one side of the dust suction pipe (125), and a fan (127) is provided on one side of the dust removal box (121).

6. The ultrafine sand screening device for fine-grained concrete production according to claim 5, characterized in that: The filter screen (123) is bolted to the dust collection box (121), and the position of the filter screen (123) corresponds to the position of the fan (127).

7. The ultrafine sand screening device for fine-grained concrete production according to claim 5, characterized in that: The dust suction pipe (125) is fixedly connected to the dust collection pipe (124). The dust suction pipe (125) is U-shaped. The positions of the two ends of the dust suction pipe (125) correspond to the positions of the coarse sand loading car (10) and the ultrafine sand loading car (11), respectively. The dust suction pipe (125) and the extension pipe (126) are integrated. The position of the extension pipe (126) corresponds to the position of the hopper (9).

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