Machine-made sand particle size screening device

Abstract

The utility model relates to a machine-made sand grain size screening device in the technical field of machine-made sand equipment, which comprises a screening box, a machine-made sand pretreatment structure and a multi-stage screening structure are arranged in the screening box, the machine-made sand pretreatment structure is positioned above the multi-stage screening structure, the multi-stage screening structure comprises a plurality of screening plates, and the screening box is connected with a vibration motor. Stone powder in machine-made sand is preliminarily separated through the pretreatment structure, the influence of the stone powder on follow-up use of the machine-made sand is reduced, the machine-made sand is screened for multiple times through the multi-stage screening structure, the screening effect is improved, and meanwhile different screening plates can be replaced to screen out the machine-made sand with different particle sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of machine-made sand equipment, in particular to a machine-made sand particle size screening device. Background Art

[0002] As natural sand mining gradually tightens, leading to insufficient supply, the application of manufactured sand has gained increasing recognition and popularity. With its stable quality and diverse particle size options, manufactured sand has become an important alternative to natural sand. Currently, manufactured sand production methods are primarily divided into dry sand production and wet sand production, with dry sand production being particularly important in many applications. Screening equipment is essential in the dry sand production process, effectively separating the coarse sand into different particle sizes to meet the stringent sand material requirements of construction and engineering.

[0003] Artificial sand needs to be screened before use, but there is stone powder in the artificial sand, which affects the screening and use of the artificial sand after screening. The stone powder in the artificial sand needs to be pretreated.

[0004] Therefore, in response to the above problems, a machine-made sand particle size screening device is proposed to solve the above problems. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model develops a machine-made sand particle size screening device, which can screen the machine-made sand and pre-treat the stone powder at the same time.

[0006] The technical solution of the utility model to solve the technical problem is: a machine-made sand particle size screening device, including a screening box, in which a machine-made sand pretreatment structure and a multi-stage screening structure are arranged, the machine-made sand pretreatment structure is located above the multi-stage screening structure, the multi-stage screening structure includes multiple screening plates, and the screening box is connected to a vibration motor.

[0007] The pre-treatment structure is used to initially separate the stone powder in the machine-made sand to reduce the impact of the stone powder on the subsequent use of machine-made sand. The multi-stage screening structure is used to screen the machine-made sand multiple times to improve the screening effect. At the same time, different screening plates can be replaced to screen out machine-made sand of different particle sizes.

[0008] Preferably, the multi-stage screening structure also includes a support platform, a mounting rod, a hinge and a fixed platform. Multiple support platforms are symmetrically arranged on the inner wall of the screening box, a mounting rod is arranged on the support platform, a hinge is arranged on the mounting rod and connected to one end of the screening plate, and the other end of the screening plate is arranged on the fixed platform, and the fixed platform is located on the side opposite to the support platform.

[0009] The screening plate is set on the mounting rod through a hinge. The screening plate can produce a certain amount of rotation around the hinge. When the vibration motor is working, the shaking of the screening plate is increased through the action of the hinge, thereby improving the screening effect.

[0010] Preferably, the multi-stage screening structure also includes a limit groove, a limit plate and a positioning bolt. The screening plate is arranged at an angle, and the height of the screening plate at one end of the mounting platform is higher than the height of one end of the mounting rod. A plurality of limit plates are vertically arranged on the mounting platform, and a plurality of limit grooves are arranged on the screening plate. The limit plates pass through the limit grooves, and the limit plates are located above the screening plate and positioning bolts are arranged.

[0011] The screening plate is set at an angle so that the machine-made sand moves under the action of gravity, thereby performing continuous screening. The screening plate is set on the mounting platform through the limit groove and the limit plate, so that there is a certain amount of movement between the screening plate and the mounting platform, thereby improving the vibration effect of the screening plate. The positioning bolts on the limit plate play an anti-slip role to prevent the screening plate from falling off.

[0012] Preferably, the multi-stage screening structure also includes a baffle, a slide rail, a collection box and a slider. The baffle is arranged between the symmetrically arranged mounting rods, the slide rail is arranged on the lower part of the baffle away from the screening plate, and multiple slide rails are arranged on the inner wall of the support platform of the screening box. The slide rails on the screening box correspond one-to-one to the slide rails on the baffle, and the collection box is slidably connected to the guide rail through the slider.

[0013] By setting up a collection box, the machine-made sand that cannot be screened can be put into the collection box for unified collection, which is convenient for subsequent processing. The collection box can be easily disassembled and installed through the sliding connection of the slide rail and the slider.

[0014] Preferably, the machine-made sand pretreatment structure includes a material guide table, a material guide plate, a fine mesh and an ash falling cavity. The material guide table is located in the screening box, and the material guide table is arranged on one side of the screening box mounting support platform. The ash falling cavity is arranged in the material guide table, and a fine mesh is arranged on the ash falling cavity. The fine mesh is arranged at an angle, and the material guide table is located on both sides of the fine mesh, and the material guide plates are symmetrically arranged vertically.

[0015] The machine-made sand can be moved on the fine mesh by the inclined setting, and the stone powder falls into the ash falling chamber during the movement. The material guide plate is set to prevent the machine-made sand from being dispersed.

[0016] Preferably, the machine-made sand pretreatment structure further includes a suction pipe, a negative pressure fan and a dust removal device. A suction pipe is provided in the dust falling chamber, the suction pipe is connected to the negative pressure fan, and the negative pressure fan is connected to the dust removal device.

[0017] Through the suction pipe and negative pressure fan, the stone powder is transported to the dust removal equipment for collection.

[0018] Preferably, a feed hopper is provided on the screening box, and the feed hopper is located above the fine mesh.

[0019] Preferably, a plurality of sieve holes are provided on the sieve plate, and the sieve holes are strip-shaped.

[0020] The aperture of the bar screen method is used to screen qualified machine-made sand particles.

[0021] The effects provided in the content of the utility model are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0022] The pre-treatment structure is used to initially separate the stone powder in the machine-made sand to reduce the impact of the stone powder on the subsequent use of the machine-made sand. The multi-stage screening structure is used to screen the machine-made sand multiple times to improve the screening effect. At the same time, different screening plates can be replaced to screen out machine-made sand of different particle sizes.

[0023] The screening plate is set on the mounting rod through a hinge. The screening plate can produce a certain amount of rotation around the hinge. When the vibration motor is working, the shaking of the screening plate increases through the action of the hinge. The screening plate is tilted so that the machine-made sand moves under the action of gravity, thereby performing continuous screening. The screening plate is set on the mounting table through a limit groove and a limit plate, so that there is a certain amount of movement between the screening plate and the mounting table, thereby improving the vibration effect of the screening plate. The positioning bolts on the limit plate play an anti-slip role to prevent the screening plate from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of the utility model.

[0026] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

[0027] Figure 3 For this utility model Figure 1 A magnified schematic diagram of the structure in the middle.

[0028] Figure 4 For this utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0029] Figure 5 For this utility model Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure, 1. screening box; 2. screening plate; 3. vibration motor; 4. support platform; 5. mounting rod; 6. hinge; 7. fixing platform; 8. limit slot; 9. limit plate; 10. positioning bolt; 11. baffle; 12. slide rail; 13. collection box; 14. slider; 15. guide platform; 16. guide plate; 17. fine mesh; 18. dust falling chamber; 19. suction pipe; 20. negative pressure fan; 21. dust removal equipment; 22. feed hopper; 23. sieve hole. DETAILED DESCRIPTION

[0031] To clearly illustrate the technical features of this solution, the present invention is described in detail below using specific embodiments and accompanying drawings. The following disclosure provides numerous different embodiments or examples for implementing various configurations of the present invention. To simplify the disclosure of the present invention, the following descriptions focus on components and configurations of specific examples. Furthermore, the present invention may repeat reference numerals and / or letters across different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] like Figures 1 to 5As shown, a machine-made sand particle size screening device includes a screening box 1, within which are disposed a machine-made sand pretreatment structure and a multi-stage screening structure. The machine-made sand pretreatment structure is located above the multi-stage screening structure, which includes multiple screening plates 2. The screening box 1 is connected to a vibration motor 3. The pretreatment structure performs preliminary separation of stone powder in the machine-made sand, reducing its impact on subsequent use of the machine-made sand. The multi-stage screening structure screens the machine-made sand multiple times, improving the screening effect. At the same time, different screening plates 2 can be replaced to screen out machine-made sand of different particle sizes.

[0033] The multi-stage screening structure also includes a support platform 4, a mounting rod 5, a hinge 6, and a fixed platform 7. Multiple support platforms 4 are symmetrically arranged on the inner wall of the screening box 1. The support platforms 4 are provided with mounting rods 5. The mounting rods 5 are provided with hinges 6 connected to one end of the screening plate 2. The other end of the screening plate 2 is provided on the fixed platform 7, which is located on the side opposite to the support platform 4. The screening plate 2 is provided on the mounting rod 5 via hinges 6. The screening plate 2 can generate a certain amount of rotation around the hinges 6. When the vibration motor 3 is working, the hinges 6 increase the shaking of the screening plate 2, thereby improving the screening effect.

[0034] The multi-stage screening structure also includes a limit slot 8, a limit plate 9 and a positioning bolt 10. The screen plate 2 is tilted, and the height of the screen plate 2 at one end of the mounting platform is higher than the height of the one end of the mounting rod 5. A plurality of limit plates 9 are vertically arranged on the mounting platform, and a plurality of limit slots 8 are arranged on the screen plate 2. The limit plates 9 pass through the limit slots 8. The limit plates 9 are located above the screen plate 2 and positioning bolts 10 are arranged. The screen plate 2 is tilted so that the machine-made sand moves under the action of gravity, thereby performing continuous screening. The screen plate 2 is arranged on the mounting platform through the limit slots 8 and the limit plates 9, so that there is a certain amount of movement between the screen plate 2 and the mounting platform, thereby improving the vibration effect of the screen plate 2. The positioning bolts 10 on the limit plates 9 play an anti-slip role, preventing the screen plate 2 from falling off.

[0035] The multi-stage screening structure also includes a baffle 11, a slide rail 12, a collection box 13 and a slider 14. The baffle 11 is set between the symmetrically arranged mounting rods 5. The slide rail 12 is set at the lower part of the baffle 11 away from the screening plate 2. A plurality of slide rails 12 are set on the inner wall of the support platform 4 of the screening box 1. The slide rails 12 on the screening box 1 correspond one to one with the slide rails 12 on the baffle 11. The collection box 13 is slidably connected to the guide rail through the slider 14. By setting up the collection box 13, the machine-made sand that cannot be screened enters the collection box 13 for unified collection, which is convenient for subsequent processing. The slide rail 12 and the slider 14 are slidably connected, which facilitates the disassembly and installation of the collection box 13.

[0036] The machine-made sand pretreatment structure includes a guide platform 15, a guide plate 16, a fine mesh 17, and an ash drop chamber 18. The guide platform 15 is located inside the screening box 1 and is set on one side of the support platform 4 of the screening box 1. The ash drop chamber 18 is set inside the guide platform 15, and a fine mesh 17 is set above the ash drop chamber 18. The fine mesh 17 is set at an angle. The guide platform 15 is located on both sides of the fine mesh 17, and the guide plates 16 are symmetrically arranged vertically. The inclined fine mesh 17 allows the machine-made sand to move on the fine mesh 17, and during the movement, the stone powder falls into the ash drop chamber 18. The guide plate 16 prevents the machine-made sand from dispersing.

[0037] The machine-made sand pretreatment structure also includes a suction pipe 19, a negative pressure fan 20, and a dust removal device 21. The suction pipe 19 is installed in the dust drop chamber 18 and is connected to the negative pressure fan 20, which is in turn connected to the dust removal device 21. The suction pipe 19 and the negative pressure fan 20 transport the stone dust to the dust removal device 21 for collection.

[0038] A feed hopper 22 is provided on the screening box 1 , and the feed hopper 22 is located above the fine mesh 17 .

[0039] The screening plate 2 is provided with a plurality of sieve holes 23, which are bar-shaped. The aperture of the bar screen method is used to screen qualified machine-made sand particles.

[0040] Working principle: The machine-made sand enters the screening box 1 from the feed hopper 22, first moves from the fine mesh 17 and under the action of the negative pressure fan 20, the stone powder enters the ash falling chamber 18, and then enters the dust removal equipment 21 from the ash falling chamber 18. Under the action of gravity vibration, the machine-made sand enters the multi-stage screening structure for multi-layer screening.

[0041] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the utility model.

Claims

1. A machine-made sand particle size screening device, characterized by: The invention comprises a screening box (1), wherein a machine-made sand pretreatment structure and a multi-stage screening structure are arranged in the screening box (1), the machine-made sand pretreatment structure is located above the multi-stage screening structure, the multi-stage screening structure comprises a plurality of screening plates (2), and the screening box (1) is connected to a vibration motor (3); The machine-made sand pretreatment structure comprises a material guide table (15), a material guide plate (16), a fine mesh (17) and an ash drop cavity (18); the material guide table (15) is located in the screening box (1); the material guide table (15) is arranged on one side of the screening box (1) where the support table (4) is installed; an ash drop cavity (18) is arranged in the material guide table (15); a fine mesh (17) is arranged on the ash drop cavity (18); the fine mesh (17) is arranged at an angle; the material guide table (15) is located on both sides of the fine mesh (17); and the material guide plates (16) are symmetrically arranged vertically. The machine-made sand pretreatment structure further comprises a suction pipe (19), a negative pressure fan (20) and a dust removal device (21); the suction pipe (19) is provided in the dust falling chamber (18); the suction pipe (19) is connected to the negative pressure fan (20); and the negative pressure fan (20) is connected to the dust removal device (21); A feed hopper (22) is provided on the screening box (1), and the feed hopper (22) is located above the fine mesh (17).

2. The machine-made sand particle size screening device according to claim 1, characterized in that: The multi-stage screening structure further comprises a support platform (4), a mounting rod (5), a hinge (6) and a fixed platform (7); a plurality of support platforms (4) are symmetrically arranged on the inner wall of the screening box (1); a mounting rod (5) is arranged on the support platform (4); a hinge (6) is arranged on the mounting rod (5) and is connected to one end of the screening plate (2); the other end of the screening plate (2) is arranged on the fixed platform (7); and the fixed platform (7) is located on a side opposite to the support platform (4).

3. The machine-made sand particle size screening device according to claim 2, characterized in that: The multi-stage screening structure further comprises a limiting groove (8), a limiting plate (9) and a positioning bolt (10); the screening plate (2) is arranged at an angle; the height of the screening plate (2) at one end of the mounting platform is higher than the height of one end of the mounting rod (5); a plurality of limiting plates (9) are vertically arranged on the mounting platform; a plurality of limiting grooves (8) are arranged on the screening plate (2); the limiting plates (9) pass through the limiting grooves (8); and the limiting plates (9) are located above the screening plate (2) and a positioning bolt (10) is arranged.

4. The machine-made sand particle size screening device according to claim 3, characterized in that: The multi-stage screening structure further comprises a baffle (11), a slide rail (12), a collecting box (13) and a slider (14). The baffle (11) is arranged between the symmetrically arranged mounting rods (5). The slide rail (12) is arranged at the lower part of the baffle (11) away from the screening plate (2). A plurality of slide rails (12) are arranged on the inner wall of the support platform (4) of the screening box (1). The slide rails (12) on the screening box (1) correspond to the slide rails (12) on the baffle (11) in a one-to-one manner. The collecting box (13) is slidably connected to the guide rail via the slider (14).

5. The machine-made sand particle size screening device according to claim 1, characterized in that: A plurality of sieve holes (23) are provided on the sieve plate (2), and the sieve holes (23) are strip-shaped.

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