Sand screening machine for constructional engineering

Abstract

The utility model discloses a sand screening machine for constructional engineering, and relates to the technical field of sand screening machines, the sand screening machine comprises a rack, the inner wall of the rack is rotatably connected with a rotating rod, the outer surface of the rotating rod is fixedly connected with a sand screening cylinder, the inner wall of a hopper is provided with a crushing and blanking assembly, and the top end of the rack is provided with a cleaning assembly. According to the sand screening machine for constructional engineering, through the crushing and discharging assembly, when caked sand needs to be crushed, a second motor is started at the moment, the output end of the motor drives crushing rollers to rotate through a coupler, and due to the fact that two gears are in a meshed state, the two crushing rollers rotate towards the middle of each other; according to the sand screening device, the falling caked sand is crushed, the caked sand can be effectively scattered, it is guaranteed that sand grains are evenly and finely crushed, the sand screening efficiency is improved, the crushed sand grains are separated through the screen more easily, the sand screening quality and precision are improved, and therefore the overall production efficiency and the screening effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of sand screening machine technology, and in particular to a sand screening machine for construction engineering. Background Technology

[0002] Sand screening machines, also known as dryland sand screening vessels or sand and gravel separators, are sand and gravel separation equipment suitable for rivers, reservoirs, and coal yards. They consist of a hull, frame, reducer, conveyor belt, rotary screen, and engine or motor. These machines are simple in structure, economical, practical, and easy to operate. They are available in various types, including drum-type sand screening machines, water-washed drum-type sand screening machines, and vibrating screen-type sand screening machines.

[0003] Existing sand screening machines mainly consist of a frame, a rotating rod, a motor, a hopper, and a screening cylinder. In operation, sand is placed in the hopper and falls into the screening cylinder under gravity. The motor then drives the screening cylinder on the rotating rod to rotate, allowing the sand to pass through for screening. However, in actual use, prolonged placement of sand can cause it to clump, preventing the screening cylinder from effectively separating the clumps, resulting in poor screening performance and insufficient resource utilization. Furthermore, sand in the hopper can easily accumulate during the feeding process, causing blockages and hindering normal feeding operations.

[0004] Therefore, a sand screening machine for construction engineering is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, where prolonged storage of sand can lead to clumping during actual use, making it impossible for the sand screening cylinder to effectively screen the clumped sand, resulting in poor screening performance and insufficient resource utilization, and the sand in the hopper can easily accumulate during the feeding process, causing blockages and preventing normal feeding operations, a sand screening machine for construction engineering is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a sand screening machine for construction engineering, including a frame, a rotating rod rotatably connected to the inner wall of the frame, a sand screening cylinder fixedly connected to the outer surface of the rotating rod, a hopper fixedly connected to the top of the frame, a motor fixedly connected to one end of the rotating rod and fixedly connected to the frame, a crushing and feeding assembly provided on the inner wall of the hopper, a cleaning assembly provided at the top of the frame, the crushing and feeding assembly including two crushing rollers rotatably connected to the inner wall of the hopper, a meshing gear fixedly connected to one end of each of the two crushing rollers, a motor fixedly connected to one side of the hopper at the other end of one crushing roller, and two inclined plates fixedly connected above the crushing rollers on the inner surface of the hopper.

[0007] Preferably, each inner wall of the hopper is fixedly connected to an arc-shaped plate on one side that is close to each other, and each side of the two arc-shaped plates is fixedly connected with a number of bristles at equal intervals in a linear fashion.

[0008] Preferably, a reciprocating rod is rotatably connected to the inner wall of the hopper, a slider is slidably connected to the outer surface of the reciprocating rod, a scraper is fixedly connected to one side of the slider and is in close contact with the upper ends of the two inclined plates, and a pulley set is fixedly connected to the outer surface of the reciprocating rod and the outer surface of the crushing roller.

[0009] Preferably, a limiting plate is fixedly connected to one side of the inner wall of the hopper that is close to the other, and the inner wall of the limiting plate is slidably connected to the outer surface of the slider.

[0010] Preferably, the cleaning assembly includes two fixed blocks fixedly connected to the top of the frame, the inner walls of the two fixed blocks are rotatably connected to a cleaning roller, and the outer surface of the cleaning roller and the outer surface of the rotating rod are fixedly connected to a pulley set II.

[0011] Preferably, a plurality of springs are fixedly connected to the top of the frame, the plurality of springs are linearly and equidistantly distributed, and a scraper second is fixedly connected to the end of the plurality of springs away from the frame, the outer surface of the scraper second being arc-shaped.

[0012] Preferably, each of the springs has a telescopic rod inside its cavity, and the two ends of the telescopic rods are fixedly connected to the bottom end of the scraper and the top end of the frame, respectively.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a sand screening machine for construction engineering. When it is necessary to crush agglomerated sand through the crushing and feeding assembly, the second motor is started, and the output end of the motor drives the crushing roller to rotate through the coupling. Since the two gears are in a meshing state, the two crushing rollers rotate towards each other, thereby crushing the falling agglomerated sand. This can effectively break up the agglomerated sand, ensure that the sand particles are uniformly and finely crushed, improve the efficiency of sand screening, and make the crushed sand particles easier to separate through the screen, which helps to improve the quality and accuracy of sand screening, reduce the impact of large particles or agglomerates on subsequent processes, and thus improve the overall production efficiency and screening effect.

[0015] 2. This utility model provides a sand screening machine for construction engineering. Through the cleaning component, the rotating rod drives the cleaning roller to rotate through the belt pulley group two during the rotation of the sand screening cylinder. When the sand screening cylinder is screening sand, the rotation of the cleaning roller will further clean the sand clogging the sand screening cylinder. Its rotation helps to loosen and remove the blockage, keep the screen unobstructed, and ensure that the sand particles can pass through the sand screening cylinder smoothly, thereby improving the sand screening efficiency, reducing the adverse effects of blockage, and thus improving the sand screening accuracy and overall work efficiency, ensuring the smooth and efficient screening process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the frame, hopper, and rotating rod structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the explosion effect of the crushing and feeding assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the explosion effect of the cleaning component of this utility model.

[0021] In the diagram: 1. Frame; 2. Rotating rod; 3. Motor 1; 4. Hopper; 5. Sand screening cylinder; 6. Crushing and feeding assembly; 61. Crushing roller; 63. Gear; 64. Motor 2; 65. Inclined plate; 66. Arc plate; 67. Brush; 68. Reciprocating rod; 69. Sliding block; 610. Scraper 1; 611. Belt pulley group 1; 612. Limiting plate; 7. Cleaning assembly; 71. Fixing block; 72. Cleaning roller; 73. Belt pulley group 2; 74. Spring; 75. Telescopic rod; 76. Scraper 2. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] Please see Figure 1 - Figure 5This utility model provides a technical solution: a sand screening machine for construction engineering, including a frame 1, a rotating rod 2 rotatably connected to the inner wall of the frame 1, a sand screening cylinder 5 fixedly connected to the outer surface of the rotating rod 2, a hopper 4 fixedly connected to the top of the frame 1, a motor 3 fixedly connected to one end of the rotating rod 2 and fixedly connected to the frame 1, a crushing and feeding assembly 6 provided on the inner wall of the hopper 4, a cleaning assembly 7 provided on the top of the frame 1, the crushing and feeding assembly 6 including two crushing rollers 61 rotatably connected to the inner wall of the hopper 4, a meshing gear 63 fixedly connected to one end of each of the two crushing rollers 61, and a motor 2 fixedly connected to one side of the hopper 4 at the other end of one crushing roller 61. 64. Two inclined plates 65 are fixedly connected to the inner surface of the hopper 4 above the crushing roller 61. When it is necessary to crush the agglomerated sand, the second motor 64 is started, so that the output end of the second motor 64 drives the crushing roller 61 to rotate through the coupling. Since the two gears 63 are in a meshing state, the two crushing rollers 61 rotate towards each other, thereby crushing the falling agglomerated sand. This can effectively break up the agglomerated sand, ensure that the sand particles are uniformly crushed, improve the efficiency of sand screening, and make the crushed sand particles easier to separate through the screen, which helps to improve the quality and accuracy of sand screening, reduce the impact of large particles or agglomerated particles on subsequent processes, and thus improve the overall production efficiency and screening effect.

[0025] It should be noted that the crushing roller 61 and the sand screening cylinder 5 mentioned above are both mature technologies and conventional designs in the existing technology, and their internal structure, connection method and principle will not be described further.

[0026] like Figure 4 As shown, arc-shaped plates 66 are fixedly connected to the inner walls of the hopper 4 on their adjacent sides. Several brush bristles 67 are linearly and equidistantly distributed on the adjacent sides of the two arc-shaped plates 66. During the crushing process of the crushing roller 61, the sand has a certain moisture content, which causes the sand to adhere to the outer surface of the crushing roller 61, resulting in a decrease in crushing efficiency and a deterioration in effect. When the crushing roller 61 rotates, the brush bristles 67 on the arc-shaped plates 66 can clean the sand adhering to the outer surface of the crushing roller 61. Through the cleaning action of the brush bristles 67, the crushing roller 61 can work continuously and efficiently, improve the crushing effect, avoid the increase of friction or the obstruction of sand particle crushing due to the adhering material, ensure the uniformity and precision of sand particles in the sand screening process, and thus improve the overall sand screening efficiency and quality.

[0027] like Figure 4As shown, a reciprocating rod 68 is rotatably connected to the inner wall of the hopper 4, and a slider 69 is slidably connected to the outer surface of the reciprocating rod 68. A scraper 610, which is in close contact with the upper ends of the two inclined plates 65, is fixedly connected to one side of the slider 69. A pulley set 611 is fixedly connected to the outer surface of the reciprocating rod 68 and the outer surface of the crushing roller 61. A limiting plate 612 is fixedly connected to the inner wall of the hopper 4 on the side that is close to each other. The inner wall of the limiting plate 612 is slidably connected to the outer surface of the slider 69. During the rotation of the crushing roller 61, the reciprocating rod 68 will be driven to rotate through the pulley set 611, thereby enabling the slider 69 to reciprocate and slide on the inner wall of the limiting plate 612. This allows the scraper 610 to scrape the sand accumulated on the inclined plate 65, preventing sand from accumulating on the inclined plate 65 and causing blockage.

[0028] The reciprocating rod 68 and the slider 69 mentioned above constitute a mature ball screw mechanism in the prior art.

[0029] like Figure 5 As shown, the cleaning component 7 includes two fixed blocks 71 fixedly connected to the top of the frame 1. The inner walls of the two fixed blocks 71 are rotatably connected to a cleaning roller 72. The outer surface of the cleaning roller 72 and the outer surface of the rotating rod 2 are fixedly connected to a pulley group 73. During the rotation of the rotating rod 2, the cleaning roller 72 will be driven to rotate through the pulley group 73. When the sand screening cylinder 5 is screening sand, the rotation of the cleaning roller 72 will further clean the sand blocked on the sand screening cylinder 5. Its rotation helps to loosen and remove the blockage, keep the screen unobstructed, and ensure that the sand particles can pass through the sand screening cylinder 5 smoothly, thereby improving the sand screening efficiency, reducing the adverse effects of blockage, and thus improving the sand screening accuracy and overall working efficiency, ensuring the smooth and efficient screening process.

[0030] like Figure 5 As shown, several springs 74 are fixedly connected to the top of the frame 1. These springs 74 are linearly and equidistantly distributed. The ends of the springs 74 furthest from the frame 1 are all fixedly connected to a scraper 76. The outer surface of the scraper 76 is arc-shaped. During the rotation of the cleaning roller 72, it can clean the sand on the sand screening cylinder 5. A certain amount of sand will adhere to the cleaning roller 72. Through the cooperation of the scraper 76 and the springs 74, the scraper 76 can scrape the rotating cleaning roller 72, realizing automatic cleaning operation. The cleaning roller 72 always maintains a high-efficiency working state, avoiding the accumulation and adhesion of sand particles that affect the cleaning effect, thereby ensuring that the sand screening cylinder 5 is continuously unobstructed, improving sand screening efficiency, reducing manual intervention, and ensuring the sand particle accuracy and overall smooth operation during the sand screening process.

[0031] like Figure 5As shown, each of the inner cavities of several springs 74 is provided with a telescopic rod 75. The two ends of the telescopic rod 75 are respectively fixedly connected to the bottom end of the scraper 2 76 and the top end of the frame 1. Through the telescopic rod 75, the bending deformation of the springs 74 can be avoided during actual use, which can effectively improve the service life of the springs 74.

[0032] It should be noted that both the first pulley assembly 611 and the second pulley assembly 73 mentioned above consist of two pulleys and a belt.

[0033] The working principle of this utility model is as follows: Sand is placed in the hopper 4 and falls into the screening cylinder 5 under gravity. The screening cylinder 5 on the rotating rod 2 is then rotated by motor 3, allowing sand to pass through for screening. When it is necessary to break up clumps of sand, motor 64 is started, causing its output to drive the crushing roller 61 through a coupling. Since the two gears 63 are meshed, the two crushing rollers 61 rotate towards each other, thus crushing the falling clumps of sand. This effectively breaks up the clumps. During the crushing process, the sand has a certain moisture content, causing it to adhere to the outer surface of the crushing roller 61, reducing crushing efficiency and effectiveness. As the crushing roller 61 rotates, the bristles 67 on the arc plate 66 clean the sand adhering to its outer surface. Through the cleaning action of the bristles 67, the crushing roller 61 can work continuously and efficiently, improving the crushing effect. During the rotation of the crushing roller 61, it will... The pulley assembly 611 drives the reciprocating rod 68 to rotate, which in turn causes the slider 69 to reciprocate, sliding against the inner wall of the limiting plate 612. This allows the scraper 610 to scrape away the sand accumulated on the inclined plate 65, preventing sand from accumulating and causing blockage. When cleaning the sand screening cylinder 5 is required, the rotating rod 2 drives the cleaning roller 72 to rotate via the pulley assembly 73. During sand screening, the rotation of the cleaning roller 72 removes sand clogging the screen. The sand on the sand cylinder 5 undergoes further cleaning. Its rotation helps to loosen and remove blockages, keeping the screen unobstructed and ensuring that sand particles can pass smoothly through the sand screening cylinder 5, thereby improving sand screening efficiency and reducing the adverse effects of blockage. During the rotation of the cleaning roller 72, it can clean the sand on the sand screening cylinder 5. A certain amount of sand will adhere to the cleaning roller 72. With the cooperation of scraper 76 and spring 74, scraper 76 can scrape the rotating cleaning roller 72 to achieve automatic cleaning operation.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sand screening machine for construction engineering, comprising a frame (1), characterized in that: A rotating rod (2) is rotatably connected to the inner wall of the frame (1). A sand screening cylinder (5) is fixedly connected to the outer surface of the rotating rod (2). A hopper (4) is fixedly connected to the top of the frame (1). A motor (3) is fixedly connected to one end of the rotating rod (2) and fixedly connected to the frame (1). A crushing and feeding assembly (6) is provided on the inner wall of the hopper (4). A cleaning assembly (7) is provided on the top of the frame (1). The crushing and feeding assembly (6) includes two crushing rollers (61) rotatably connected to the inner wall of the hopper (4). One end of each of the two crushing rollers (61) is fixedly connected to a meshing gear (63). The other end of the crushing roller (61) located on one side is fixedly connected to a motor (64) fixedly connected to one side of the hopper (4). The inner surface of the hopper (4) is fixedly connected to two inclined plates (65) above the crushing roller (61). The inner wall of the hopper (4) is rotatably connected to a reciprocating rod (68). The outer surface of the reciprocating rod (68) is slidably connected to a slider (69). One side of the slider (69) is fixedly connected to a scraper (610) that is in close contact with the upper end of the two inclined plates (65). The outer surface of the reciprocating rod (68) and the outer surface of the crushing roller (61) are jointly fixedly connected to a pulley group (611).

2. The sand screening machine for construction engineering according to claim 1, characterized in that: The inner walls of the hopper (4) are fixedly connected to each other on one side, and a number of bristles (67) are fixedly connected to each other on one side of the two arc plates (66) at equal distances.

3. A sand screening machine for construction engineering according to claim 1, characterized in that: A limiting plate (612) is fixedly connected to one side of the inner wall of the hopper (4) that is close to each other, and the inner wall of the limiting plate (612) is slidably connected to the outer surface of the slider (69).

4. A sand screening machine for construction engineering according to claim 1, characterized in that: The cleaning component (7) includes two fixed blocks (71) fixedly connected to the top of the frame (1). The inner walls of the two fixed blocks (71) are rotatably connected to a cleaning roller (72). The outer surface of the cleaning roller (72) and the outer surface of the rotating rod (2) are fixedly connected to a pulley group two (73).

5. A sand screening machine for construction engineering according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to several springs (74), which are linearly and equidistantly distributed. The ends of the several springs (74) away from the frame (1) are fixedly connected to a scraper (76), and the outer surface of the scraper (76) is arc-shaped.

6. A sand screening machine for construction engineering according to claim 5, characterized in that: Each of the springs (74) has a telescopic rod (75) in its inner cavity, and the two ends of the telescopic rod (75) are fixedly connected to the bottom end of the scraper (76) and the top end of the frame (1), respectively.

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