CN219816962U

CN219816962U - Sand screening machine

Info

Publication number: CN219816962U
Application number: CN202322429635.0U
Authority: CN
Inventors: 韩波文; 韩培锋
Original assignee: Southwest University of Science and Technology
Current assignee: Southwest University of Science and Technology
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2023-10-13
Anticipated expiration: 2033-09-07

Abstract

The utility model discloses a sand screening machine, which relates to the technical field of sand screening and solves the problem that wet sand can block the screen holes of the sand screening machine when sand materials with higher moisture content are screened, and the screening effect and efficiency of the sand screening machine are directly affected; according to the utility model, the cleaning structure and the impact assembly are arranged, so that the screen drum vibrates, the effect of dredging the screen holes of the screen drum is good by matching with the rolling brush, the screen drum vibrates in the process of screening materials, the screening efficiency of sand materials can be effectively improved, the rolling brush can be cleaned in an auxiliary manner by arranging the scraping plate, and the service life of the rolling brush is prolonged.

Description

Sand screening machine

Technical Field

The utility model relates to the technical field of sand screening, in particular to a sand screening machine.

Background

The roller sand screening machine adopts a flat roller screen cylinder according to the working principle of manually screening sand by utilizing a bevel screen, and ensures that the material flow can be continuously screened for more than five circles among the spiral blades in a plurality of circles in the screen cylinder, so that sand materials are repeatedly rolled, slid and fully dispersed and separated.

In the use process of the conventional roller sand screening machine, as sand materials on a civil construction site are generally piled on the ground, and the surface of a sand pile is exposed, the moisture content in the sand materials after rain is higher, and when the sand materials with higher moisture content are screened, wet sand can appear to block the screen holes of the sand screening machine, so that the screening effect and efficiency of the sand screening machine are directly affected.

Disclosure of Invention

The utility model aims to provide a sand screening machine capable of preventing screen holes from being blocked, and the sand screening machine can solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the sand screening machine comprises a mounting frame, wherein a screen cylinder for screening sand materials is rotatably arranged on the mounting frame, a plurality of groups of reinforcing rings which are distributed at equal intervals are fixedly sleeved on the outer side of the screen cylinder, two large toothed rings which are symmetrically distributed are fixedly sleeved on the outer side of the screen cylinder, and the large toothed rings are positioned at two ends of the screen cylinder; the cleaning structure is used for cleaning the screen cylinder, is arranged on the mounting frame and is positioned on the outer side of the screen cylinder.

Preferably, the cleaning structure comprises a plurality of groups of rolling brushes which are distributed equidistantly and are movably attached to the outer wall of the screen cylinder, a main shaft penetrates through the center of each rolling brush, the rolling brushes can dredge sand blocked in the screen cylinder in the rotating process of the screen cylinder, the rolling brushes are fixedly sleeved on the outer side of the main shaft, and the outer side of the main shaft corresponds to the reinforcing ring, and the reinforcing ring is fixedly sleeved with a cam with equal number of reinforcing rings.

Preferably, the gear is installed in the outside cooperation of big ring gear, just the gear fixed cup joint in the outside of main shaft, the screen drum can be rotatory through big ring gear and gear drive main shaft, the upper end of mounting bracket corresponds the both ends department fixed mounting of main shaft has the support column, just the main shaft pass through the bearing with the main shaft rotates to be connected.

Preferably, the impact assembly is installed to the position corresponding to the reinforcing ring on the mounting frame, the impact assembly comprises an impact block connected with the mounting frame in a plugging manner, the impact block is close to one end of the reinforcing ring and movably embedded with a ball, the ball is connected with the reinforcing ring in a rolling manner, the ball can reduce friction force between the impact block and the reinforcing ring, a bump is arranged at the upper end of the impact block, and the bump is close to one end of the impact block away from the reinforcing ring.

Preferably, the cam with connected mode between the lug is movable butt, the outside of striking piece is located the internally mounted of mounting bracket has two spacing pieces that are symmetrical distribution, just spacing piece pass through spacing straight flute with mounting bracket sliding connection, spacing piece is kept away from one side terminal surface fixed mounting of reinforcement circle has the spring, and spacing piece can prevent that the striking piece from breaking away from the mounting bracket.

Preferably, the upper end of the mounting frame is fixedly embedded with scrapers with the same number as the rolling brushes corresponding to the lower sides of the rolling brushes, a plurality of groups of scrapers are provided with slopes close to one side end face of the screen cylinder, and the slopes are convenient for sand materials to automatically roll down.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the cleaning structure and the impact assembly are arranged, when the screen drum rotates to screen sand, the rolling brush can be driven to rotate through the large toothed ring and the gear, and when the rolling brush rotates to brush sand blocked in holes of the screen drum, the impact block and the ball impact the reinforcing ring on the outer side of the screen drum through the intermittent driving of the cam, so that the screen drum vibrates, the effect of dredging the screen holes of the screen drum is good by matching with the rolling brush, and the screen drum vibrates in the process of screening the sand, so that the screening efficiency of the sand can be effectively improved.

According to the utility model, the scraping plate is arranged, the slope is arranged on one side of the scraping plate, which is close to the screen drum, and the rolling brush is contacted with the scraping plate in the rotating process, so that the scraping plate can assist the rolling brush to drop attached sand on the surface of the rolling brush, and the dropped sand can automatically slide down through the slope, thereby assisting in cleaning the rolling brush and prolonging the service life of the rolling brush.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the screen drum and mounting frame of the present utility model;

FIG. 3 is a schematic view illustrating the separation of the cleaning structure and the mounting frame according to the present utility model;

FIG. 4 is a schematic cross-sectional view of the mounting bracket of the present utility model and 3 at A;

fig. 5 is an overall schematic view of the mounting bracket of the present utility model.

In the figure: 1. a mounting frame; 2. a screen drum; 3. a reinforcing ring; 4. a large toothed ring; 5. a cleaning structure; 501. a rolling brush; 502. a main shaft; 503. a cam; 504. a gear; 505. a support column; 506. a bearing; 6. an impact assembly; 601. an impact block; 602. a ball; 603. a bump; 604. a limiting piece; 605. a spring; 7. a scraper; 8. and (3) a slope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 and 2, a sand screening machine in the drawings comprises a mounting frame 1, wherein a screen cylinder 2 for screening sand is rotatably installed on the mounting frame 1, a plurality of groups of reinforcing rings 3 distributed equidistantly are fixedly sleeved on the outer side of the screen cylinder 2, two symmetrically distributed large toothed rings 4 are fixedly sleeved on the outer side of the screen cylinder 2, and the large toothed rings 4 are positioned at two ends of the screen cylinder 2; the cleaning structure 5 is used for cleaning the screen cylinder 2, and the cleaning structure 5 is arranged on the mounting frame 1 and is positioned on the outer side of the screen cylinder 2.

Referring to fig. 3, the cleaning structure 5 includes a plurality of groups of rolling brushes 501 distributed equidistantly and movably attached to the outer wall of the screen cylinder 2, a main shaft 502 penetrates through the center of the rolling brushes 501, the rolling brushes 501 can dredge sand blocked in the screen cylinder 2 during the rotation of the screen cylinder 2, the rolling brushes 501 are fixedly sleeved on the outer side of the main shaft 502, and cams 503 with the same number as the reinforcing rings 3 are fixedly sleeved on the outer side of the main shaft 502 corresponding to the reinforcing rings 3.

Referring to fig. 3, a gear 504 is mounted on the outer side of the large toothed ring 4, the gear 504 is fixedly sleeved on the outer side of the main shaft 502, the screen drum 2 can drive the main shaft 502 to rotate through the large toothed ring 4 and the gear 504, support columns 505 are fixedly mounted at two ends of the upper end of the mounting frame 1 corresponding to the main shaft 502, and the main shaft 502 is rotatably connected with the main shaft 502 through bearings 506.

Referring to fig. 4, an impact assembly 6 is installed at a position, corresponding to the reinforcing ring 3, on the mounting frame 1, the impact assembly 6 includes an impact block 601 connected with the mounting frame 1 in a plugging manner, one end, close to the reinforcing ring 3, of the impact block 601 is movably embedded with a ball 602, the ball 602 is connected with the reinforcing ring 3 in a rolling manner, the ball 602 can reduce friction between the impact block 601 and the reinforcing ring 3, a bump 603 is arranged at the upper end of the impact block 601, and the bump 603 is close to one end, away from the reinforcing ring 3, of the impact block 601.

Referring to fig. 4, the connection mode between the cam 503 and the bump 603 is a movable abutment, two limiting plates 604 which are symmetrically distributed are arranged on the outer side of the impact block 601 and located in the mounting frame 1, the limiting plates 604 are slidably connected with the mounting frame 1 through limiting straight grooves, a spring 605 is fixedly arranged on one side end surface of the limiting plates 604, which is far away from the reinforcing ring 3, and the limiting plates 604 can prevent the impact block 601 from being separated from the mounting frame 1.

Working principle of preventing screen holes of sand screening machine from being blocked: in the process of screening sand by the anticlockwise rotation of the screen drum 2, the screen drum 2 drives the gear 504 and the rolling brush 501 to rotate clockwise through the large toothed ring 4, the rolling brush 501 rotates to be in contact with the screen drum 2, the surface and screen holes of the screen drum 2 are cleaned, the main shaft 502 also drives the cam 503 to rotate clockwise in the process of the main shaft 502 driving the rolling brush 501, the cam 503 can indirectly drive the impact block 601 to move through the cam 603 in the process of rotating clockwise, when the cam 503 rotates to separate from the cam 603, the impact block 601 can impact the reinforcing ring 3 on the screen drum 2 through the balls 602 under the driving of the spring 605, so that the screen drum 2 vibrates, the rolling brush 501 is matched, the dredging effect on the screen holes of the screen drum 2 is good, the screen drum 2 vibrates in the process of screening sand, and the screening efficiency on sand can be effectively improved.

Example 2

Referring to fig. 5, in this embodiment, for further explanation of example 1, the upper end of the mounting frame 1 is fixedly embedded with the scrapers 7 equal to the number of the rollers 501 corresponding to the lower side of the rollers 501, and a plurality of groups of scrapers 7 are provided with slopes 8 near one side end surface of the screen drum 2, and the slopes 8 facilitate automatic rolling of sand.

In this embodiment: in the process of rotating the rolling brush 501, the rolling brush 501 contacts with the scraping plate 7, and the rolling brush 501 rebounds after contacting with the scraping plate 7, so that sand attached to the surface of the rolling brush can be dusted, and part of sand slides down along the slope 8, thereby being beneficial to assisting in cleaning the rolling brush 501 and prolonging the service life of the rolling brush 501.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process-method-article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process-method-article or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes-modifications-substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sand screening machine, includes mounting bracket (1), install screen drum (2) that are used for screening sand material on mounting bracket (1) rotation, its characterized in that: the outer side of the screen cylinder (2) is fixedly sleeved with a plurality of groups of reinforcing rings (3) which are distributed at equal intervals, the outer side of the screen cylinder (2) is fixedly sleeved with two large toothed rings (4) which are symmetrically distributed, and the large toothed rings (4) are positioned at two ends of the screen cylinder (2);

cleaning structure (5), be used for right screen cylinder (2) clear up cleaning structure (5) install in on mounting bracket (1), and be located the outside of screen cylinder (2).

2. A sand screening machine according to claim 1, characterized in that: the cleaning structure (5) comprises a plurality of groups of rolling brushes (501) which are distributed equidistantly and are movably attached to the outer wall of the screen cylinder (2), a main shaft (502) penetrates through the center of each rolling brush (501), the rolling brushes (501) are fixedly sleeved on the outer side of each main shaft (502), and cams (503) with the same number of the reinforcing rings (3) are fixedly sleeved on the outer side of each main shaft (502) corresponding to the reinforcing rings (3).

3. A sand screening machine according to claim 2, characterized in that: the outer side of the large toothed ring (4) is provided with a gear (504) in a matched mode, the gear (504) is fixedly sleeved on the outer side of the main shaft (502), the upper end of the mounting frame (1) is fixedly provided with supporting columns (505) corresponding to the two ends of the main shaft (502), and the main shaft (502) is rotatably connected with the main shaft (502) through bearings (506).

4. A sand screening machine according to claim 1, characterized in that: the utility model discloses a reinforced ring (3) of the utility model, including installation frame (1) and reinforcing ring, impact subassembly (6) are installed to corresponding on installation frame (1) reinforced ring (3) department, impact subassembly (6) include with impact piece (601) that installation frame (1) plug is connected, impact piece (601) are close to reinforced ring (3)'s one end activity has inlayed ball (602), just ball (602) with the connected mode between reinforced ring (3) is roll connection, the upper end of impact piece (601) is provided with lug (603), just lug (603) are close to impact piece (601) are kept away from reinforced ring (3) one end.

5. The sand screen as claimed in claim 4, wherein: the cam (503) with connected mode between lug (603) is movable butt, the outside of striking piece (601) is located internally mounted of mounting bracket (1) has two spacing pieces (604) that are symmetrical distribution, just spacing piece (604) through spacing straight flute with mounting bracket (1) sliding connection, spacing piece (604) are kept away from one side terminal surface fixed mounting of reinforcement circle (3) has spring (605).

6. A sand screening machine according to claim 2, characterized in that: the upper end of the mounting frame (1) is fixedly embedded with scrapers (7) which are equal to the number of the rolling brushes (501) corresponding to the lower sides of the rolling brushes (501), and a plurality of groups of scrapers (7) are provided with slopes (8) close to one side end face of the screen drum (2).