Grading adjustment screening machine for crushed concrete

Abstract

The invention discloses a graded adjusting screening machine for crushed concrete, and belongs to the technical field of building construction.The graded adjusting screening machine comprises a box body, a roller and a spiral cutter, a first mounting frame is fixed to one side of the box body, a second mounting frame is fixed to the other side of the box body, and the roller is rotationally mounted between the first mounting frame and the second mounting frame; a spiral cutter designed spirally is arranged on the outer wall of the roller; screening devices distributed in an annular array mode are arranged on the lower semicircular part of the box body and are divided into a first screen, a second screen, a third screen and a fourth screen. Drainage devices are arranged at the lower ends of the screening devices respectively; stirring devices distributed in a linear array are arranged on the upper surface of the box body; and the stirring devices rotate coaxially. On the basis that dry concrete screening is achieved, concrete can be moved and screened to the maximum extent in the cylindrical box body, stirring treatment can be conducted in the moving process, and the screening effect is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a grading adjustment and screening machine for crushed concrete. Background Art

[0002] Concrete screening machine is a kind of equipment used to screen and sift materials such as concrete. It can separate impurities and unnecessary substances in raw materials according to different particle sizes and shapes to achieve the purpose of improving production efficiency and product quality. This equipment is usually used in concrete production lines in construction sites, cement plants and other occasions.

[0003] The existing concrete grading and screening machines lack the function of convenient and efficient rolling grading and screening of soil block size. Conventional screening devices require vibrating screens for separation, which makes too much noise and lacks certain work efficiency. Therefore, it is particularly important to develop a screening device that can screen stably and has noise reduction effects for the screening of dry concrete. This not only helps to evaluate the product life, but also provides data support for improving design and improving product quality. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a grading and adjusting screening machine for crushed concrete. On the basis of realizing the screening of dry concrete, the present invention can also realize the maximum motion screening of concrete inside a cylindrical box, and can carry out stirring during movement to optimize the screening effect.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A grading adjustment and screening machine for crushed concrete, comprising a box, a drum and a spiral cutter, a first mounting frame is fixed on one side of the box, a second mounting frame is fixed on the other side of the box, a drum is rotatably mounted between the first mounting frame and the second mounting frame, and a spiral cutter with a spiral design is arranged on the outer wall of the drum;

[0009] The lower semicircular part of the box body is provided with a screening device distributed in a circular array, and the screening device is divided into screen mesh 1, screen mesh 2, screen mesh 3 and screen mesh 4, and the screen mesh 1, screen mesh 2, screen mesh 3 and screen mesh 4 are sequentially located at the lower end of the box body;

[0010] The lower ends of the screening devices are provided with drainage devices, which are inclined at an angle of thirty degrees.

[0011] The upper surface of the box is provided with stirring devices distributed in a linear array, and the stirring devices rotate coaxially;

[0012] Working principle: When the device is in use, the soil blocks to be screened are introduced from the feed hopper. When the soil blocks touch the rotating drum, the closed area formed by the spiral knife and the inner wall of the box will drive the soil blocks to move around the spiral knife path, which is reflected in the spiral advancement inside the box and continuously rolling on the lower surface of the box. This movement does not require the participation of a vibration device to complete the screening of the soil blocks. The soil blocks start to move from one side of screen one to screen four. The passing size of screen one is the smallest, and the passing size of screen four is the largest. Soil blocks of different sizes will move from one side of the box along this step-by-step layering. On the way to the other side, it continuously falls into the discharge port of corresponding size, and then is discharged along the slope, until the soil blocks that are not screened by screen four are discharged from the other side of the box. This device can sort out five different sizes of soil blocks. When the spiral knife drives the soil block group to move, when passing the upper end of the spiral knife, motor two will drive the baffle inside the mixing device to rotate continuously, so that the soil block group is stirred to a certain extent, making the movement of the soil blocks more dispersed and easier to screen out. This device has the function of efficiently screening concrete blocks step by step, can screen five sizes, and has high practicality.

[0013] As a preferred embodiment of the present invention, the lengths of Screen 2, Screen 3 and Screen 4 are equal, the length of Screen 1 is greater than half of the length of Screen 2, the width of Screen 1 is ten millimeters, the width of Screen 2 is fifteen millimeters, the width of Screen 3 is twenty millimeters, and the width of Screen 4 is twenty-five millimeters.

[0014] As a preferred embodiment of the present invention, the drainage devices are outlet port one, outlet port two, outlet port three, outlet port four and outlet port five respectively, outlet port one is located directly below screen one, outlet port two is located directly below screen two, outlet port three is located directly below screen three, outlet port four is located directly below screen four, and outlet port five is fixed to the outer wall of one side of the box body.

[0015] As a preferred solution of the present invention, the connection parts of the discharge port 1, the discharge port 2, the discharge port 3 and the discharge port 4 with the box body are all provided with guide plates, and are arc-shaped in design.

[0016] As a preferred solution of the present invention, the discharge port five is designed in a spiral semicircular shape, and the outlet direction is the same as the discharge port one. A bracket one is fixed to the lower end of the box body, and the discharge ports one, two, three and four are located between the bracket one.

[0017] As a preferred solution of the present invention, a feed hopper is fixed on the side of the box body away from the discharge port 5. The feed hopper is inclined and has a semi-arc inner wall. A bracket 2 is fixed at the lower end of the feed hopper, and a base is fixed at the lower end of the bracket 2.

[0018] As a preferred solution of the present invention, a motor 1 is fixed on one side of the mounting frame 1, and the drum is rotatably installed between the mounting frame 1 and the mounting frame 2 via a rotating shaft, and the output shaft of the motor 1 is fixedly connected to the rotation center of one side of the rotating shaft.

[0019] As a preferred solution of the present invention, a motor 2 is fixed to one side of the upper end of the box body, and the stirring device includes a mounting groove, a linear array of the mounting grooves is opened at the upper end of the box body, a rotating block is rotatably installed inside the mounting groove, and baffles distributed in a circular array are fixed to the outer wall of the rotating block, the number of the baffles is six, and the length is ten centimeters. The lowermost baffle just reaches one-quarter of the diameter of the spiral cutter, and the bottom of the mounting groove just coincides with the gap between the spiral cutter.

[0020] As a preferred solution of the present invention, the spiral angle of the spiral cutter is thirty degrees, the blade spacing of the spiral cutter is twenty centimeters, and the diameter of the spiral cutter is one centimeter smaller than the inner diameter of the box. The design that almost fits the inner wall of the box can ensure that soil blocks will not move from the gap, ensuring that the maximum amount of soil blocks spiral along the inner wall of the box, thereby optimizing the screening effect.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] (1) The present invention realizes the gradual screening of concrete block groups by using the semicircular ring-shaped screens 1, 2, 3 and 4 arranged inside the box. The smaller particles first fall from the screen 1 and are then screened in sequence. The roller is rolled to increase the contact time between the soil block group and the screen surface in the limited environment inside the box, thereby increasing the effect of soil block screening.

[0024] (2) The present invention utilizes a stirring device designed inside the mounting groove at the upper end of the box body. When the soil clods pass over the drum, the baffle plate can be used to stir the clods, thereby increasing the dispersion of the soil clods and optimizing the screening process of the soil clods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram from a first angle of a grading adjustment and screening machine for crushed concrete according to the present invention;

[0026] Figure 2 It is a three-dimensional schematic diagram from a second angle of a grading adjustment and screening machine for crushed concrete according to the present invention;

[0027] Figure 3 It is a partial cross-sectional schematic diagram of a grading adjustment and screening machine for crushed concrete according to the present invention;

[0028] Figure 4 It is a schematic diagram of the bottom of a box of a grading adjustment and screening machine for crushed concrete according to the present invention;

[0029] Figure 5 The present invention is a grading adjustment screening machine for crushed concrete Figure 1 A schematic diagram of the enlarged structure in the middle;

[0030] Figure 6 The present invention is a grading adjustment screening machine for crushed concrete Figure 2 A magnified schematic diagram of structure B in the middle.

[0031] Description of the numbers in the figure:

[0032] 1. Box body; 2. Mounting slot; 3. Feed hopper; 4. Bracket 2; 5. Discharge port 1; 6. Discharge port 2; 7. Discharge port 3; 8. Discharge port 4; 9. Bracket 1; 10. Discharge port 5; 11. Motor 1; 12. Mounting frame 1; 13. Stirring device; 14. Motor 2; 15. Spiral knife; 16. Mounting frame 2; 17. Screen 1; 18. Screen 2; 19. Screen 3; 20. Screen 4; 21. Baffle; 22. Rotating block; 23. Guide plate; 24. Screw; 25. Roller; 26. Rotating shaft. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example:

[0035] See also Figure 1-6 A grading adjustment screening machine for crushed concrete, comprising a box body 1, a drum 25 and a spiral cutter 15, a mounting frame 12 is fixed on one side of the box body 1, a mounting frame 2 16 is fixed on the other side of the box body 1, a drum 25 is rotatably mounted between the mounting frame 12 and the mounting frame 2 16, and a spiral cutter 15 with a spiral design is arranged on the outer wall of the drum 25;

[0036] The lower semicircular part of the box body 1 is provided with a screening device distributed in a circular array, and the screening device is divided into a screen 17, a screen 2 18, a screen 3 19 and a screen 4 20, and the screen 17, the screen 2 18, the screen 3 19 and the screen 4 20 are sequentially located at the lower end of the box body 1;

[0037] The lower end of the screening device is provided with a drainage device, which is designed to be inclined at an angle of thirty degrees;

[0038] The upper surface of the box body 1 is provided with stirring devices 13 distributed in a linear array, and the stirring devices 13 rotate coaxially.

[0039] In a specific embodiment of the present invention, the lengths of screen 2 18, screen 3 19 and screen 4 20 are equal, the length of screen 1 17 is greater than half the length of screen 2 18, the width of screen 1 17 is ten millimeters, the width of screen 2 18 is fifteen millimeters, the width of screen 3 19 is twenty millimeters, and the width of screen 4 20 is twenty-five millimeters.

[0040] Specifically, the screens designed with different widths can be used to pass concrete blocks of different sizes, so that soil blocks of corresponding widths can fall into the drainage device from the lower end of the box body 1 in sequence.

[0041] In a specific embodiment of the present invention, the drainage devices are discharge port 1 5, discharge port 2 6, discharge port 3 7, discharge port 4 8 and discharge port 5 10, respectively. Discharge port 1 5 is located directly below screen 17, discharge port 2 6 is located directly below screen 2 18, discharge port 3 7 is located directly below screen 3 19, and discharge port 4 8 is located directly below screen 4 20.

[0042] Specifically, the discharge port 5 10 is fixed to the outer wall of one side of the box body 1, and the discharge ports 1 5, 2, 3, 7 and 4 8 are blocked by grilles so that the rolling soil blocks will not be mixed.

[0043] In a specific embodiment of the present invention, the connection parts of discharge port 1 5 , discharge port 2 6 , discharge port 3 7 and discharge port 4 8 with the box body 1 are all provided with guide plates 23 , and are arc-shaped in design, and can be independently disassembled and assembled using screws 24 .

[0044] Specifically, the arc-shaped design can ensure that soil blocks can smoothly enter the surface of the drainage device when they fall from each position of the screen 17, the screen 2 18, the screen 3 19 and the screen 4 20.

[0045] In a specific embodiment of the present invention, discharge port five 10 is designed in a spiral semicircular shape, and the outlet direction is the same as the direction of discharge port one 5. A bracket one 9 is fixed to the lower end of the box body 1, and discharge port one 5, discharge port two 6, discharge port three 7 and discharge port four 8 are located between the bracket one 9.

[0046] Specifically, the soil blocks discharged from the discharge port 5 10 are concrete of the largest size.

[0047] In a specific embodiment of the present invention, a feed hopper 3 is fixed to the side of the box body 1 away from the discharge port 5 10. The feed hopper 3 is inclined and the inner wall is semi-arc-shaped. A bracket 2 4 is fixed to the lower end of the feed hopper 3, and a base is fixed to the lower end of the bracket 2 4.

[0048] Specifically, the bracket 2 4 and the base can increase the stability of the feed hopper 3 , and the inclined design of the feed hopper 3 can help the soil blocks enter the box body 1 and move laterally.

[0049] In a specific embodiment of the present invention, a motor 11 is fixed to one side of the mounting frame 12, and a roller 25 is rotatably mounted between the mounting frame 12 and the mounting frame 2 16 via a rotating shaft 26, and an output shaft of the motor 11 is fixedly connected to a rotation center of one side of the rotating shaft 26.

[0050] Specifically, the motor 11 can drive the spiral cutter 15 to rotate continuously, so that the soil block can move from one side of the box body 1 to the other side along the path of the spiral cutter 15 inside the box body 1 and contact the screening system to the greatest extent.

[0051] In a specific embodiment of the present invention, a motor 2 14 is fixed to one side of the upper end of the box body 1, and the stirring device 13 includes a mounting groove 2. The mounting groove 2 is linearly arrayed and opened at the upper end of the box body 1. A rotating block 22 is rotatably installed inside the mounting groove 2. The outer wall of the rotating block 2 is fixed with baffles 21 distributed in a circular array. There are six baffles 21 with a length of ten centimeters. The lowermost baffle 21 just reaches one-quarter of the diameter of the spiral blade 15, and the gap between the spiral blade 15 and the mounting groove 2 just coincides with the gap between the spiral blade 15. Multiple rotating blocks 22 are connected by a fixed shaft.

[0052] Specifically, the output shaft of the second motor 14 is fixedly connected to the rotation center of one side of the fixed shaft, and the baffle 21 can perform a certain degree of stirring and breaking up of the soil when the spiral cutter 15 moves with the soil, so that the screening effect is more thorough.

[0053] In a specific embodiment of the present invention, the spiral angle of the spiral cutter 15 is thirty degrees, the blade spacing of the spiral cutter 15 is twenty centimeters, and the diameter of the spiral cutter 15 is one centimeter smaller than the inner diameter of the box body 1.

[0054] Specifically, the design of the spiral blade 15 almost fitting against the inner wall of the box body 1 can ensure that the soil blocks will not move from the gap, and ensure that the maximum amount of soil blocks move along the inner wall of the box body 1 in a spiral manner, thereby optimizing the screening effect.

[0055] A method for using a crushed concrete grading adjustment screening machine comprises the following steps:

[0056] When the device is in use, the soil blocks to be screened are introduced from the feed hopper 3. When the soil blocks contact the rotating drum 25, the closed area formed by the spiral cutter 15 and the inner wall of the box body 1 will drive the soil blocks to move around the spiral cutter 15, which is reflected in the spiral advancement inside the box body 1 and continuously rolling on the lower surface of the box body 1. This movement mode does not require the participation of a vibration device to complete the screening of the soil blocks. The soil blocks start to move from one side of the screen 17 to the screen 4 20. The passing size of the screen 17 is the smallest, and the passing size of the screen 4 20 is the largest. Soil blocks of different sizes will be transported from one side of the box body 1 in this step-by-step manner. In the process of moving to the other side, it continuously falls into the discharge port of the corresponding size, and then is discharged along the inclined surface, until finally the soil blocks that have not been screened by the screen four 20 are discharged from the other side of the box body 1. This device can sort out five different sizes of soil blocks. When the spiral knife 15 drives the soil block group to move, when passing the upper end of the spiral knife 15, the motor 2 14 will drive the baffle 21 inside the stirring device 13 to rotate continuously, so that the soil block group is stirred to a certain extent, making the movement of the soil blocks more dispersed and easier to screen out. This device has the function of efficiently screening concrete blocks step by step, can screen five sizes, and has high practicality.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A crushed concrete grading adjustment and screening machine, comprising a housing (1), a drum (25) and a spiral cutter (15), characterized in that: A mounting frame 1 (12) is fixed on one side of the box body (1), and a mounting frame 2 (16) is fixed on the other side of the box body (1); a roller (25) is rotatably mounted between the mounting frame 1 (12) and the mounting frame 2 (16); and a spiral blade (15) with a spiral design is provided on the outer wall of the roller (25); The lower semicircular portion of the box body (1) is provided with a screening device distributed in a ring array, the screening device is divided into a screen mesh 1 (17), a screen mesh 2 (18), a screen mesh 3 (19) and a screen mesh 4 (20), the screen mesh 1 (17), the screen mesh 2 (18), the screen mesh 3 (19) and the screen mesh 4 (20) being located in sequence at the lower end of the box body (1); The lower ends of the screening devices are provided with drainage devices, which are inclined at an angle of thirty degrees. The upper surface of the box body (1) is provided with stirring devices (13) distributed in a linear array, and the stirring devices (13) rotate coaxially.

2. A crushed concrete grading adjustment and screening machine according to claim 1, characterized in that: The lengths of the sieve 2 (18), sieve 3 (19) and sieve 4 (20) are equal, the length of the sieve 1 (17) is greater than half of the length of the sieve 2 (18), the width of the sieve 1 (17) is ten millimeters, the width of the sieve 2 (18) is fifteen millimeters, the width of the sieve 3 (19) is twenty millimeters, and the width of the sieve 4 (20) is twenty-five millimeters.

3. The crushed concrete grading adjustment and screening machine according to claim 1, characterized in that: The drainage devices are respectively discharge port 1 (5), discharge port 2 (6), discharge port 3 (7), discharge port 4 (8) and discharge port 5 (10). The discharge port 1 (5) is located directly below the screen 1 (17), the discharge port 2 (6) is located directly below the screen 2 (18), the discharge port 3 (7) is located directly below the screen 3 (19), the discharge port 4 (8) is located directly below the screen 4 (20), and the discharge port 5 (10) is fixed to the outer wall of one side of the box body (1).

4. A crushed concrete grading adjustment and screening machine according to claim 3, characterized in that: The connection parts between the discharge port 1 (5), the discharge port 2 (6), the discharge port 3 (7) and the discharge port 4 (8) and the box body (1) are all provided with guide plates (23) of arc-shaped design, and can be independently disassembled and assembled using screws (24).

5. The crushed concrete grading adjustment and screening machine according to claim 3, characterized in that: The discharge port five (10) is designed in a spiral semicircular shape, and the outlet direction is the same as the direction of the discharge port one (5). A bracket one (9) is fixed to the lower end of the box body (1), and the discharge port one (5), the discharge port two (6), the discharge port three (7) and the discharge port four (8) are located between the bracket one (9).

6. The crushed concrete grading adjustment and screening machine according to claim 5, characterized in that: A feed hopper (3) is fixed to the side of the box body (1) facing away from the discharge port 5 (10); the feed hopper (3) is designed to be inclined and the inner wall is designed to be semi-arc-shaped; a bracket 2 (4) is fixed to the lower end of the feed hopper (3); and a base is fixed to the lower end of the bracket 2 (4).

7. The crushed concrete grading adjustment and screening machine according to claim 1, characterized in that: A motor 1 (11) is fixed to one side of the mounting frame 1 (12); the roller (25) is rotatably mounted between the mounting frame 1 (12) and the mounting frame 2 (16) via a rotating shaft (26); and the output shaft of the motor 1 (11) is fixedly connected to the rotation center of one side of the rotating shaft (26).

8. The crushed concrete grading adjustment and screening machine according to claim 1, characterized in that: A second motor (14) is fixed to one side of the upper end of the box (1); The stirring device (13) comprises a mounting groove (2), wherein the mounting groove (2) is linearly arranged at the upper end of the box body (1), a rotating block (22) is rotatably arranged inside the mounting groove (2), and baffles (21) arranged in a circular array are fixedly arranged on the outer wall of the rotating block (22), the number of the baffles (21) is six, the length is ten centimeters, and the baffle (21) at the bottom just reaches one quarter of the diameter of the spiral blade (15); The installation groove (2) just overlaps with the gap of the spiral cutter (15) below, and a plurality of rotating blocks (22) are connected via a fixed shaft, and the output shaft of the second motor (14) is fixedly connected to the rotation center of one side of the fixed shaft.

9. The crushed concrete grading adjustment and screening machine according to claim 1, characterized in that: The spiral blade (15) has a spiral angle of thirty degrees, the blade spacing of the spiral blade (15) is twenty centimeters, and the diameter of the spiral blade (15) is one centimeter smaller than the inner diameter of the box body (1).

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