Screening device for concrete raw materials

Abstract

The utility model discloses a screening device for concrete raw materials, and particularly relates to the field of concrete production devices.The screening device comprises a supporting frame, a cover plate is fixedly arranged on the supporting frame, an inner cylinder is rotationally arranged in the cover plate, the bottom end of the cover plate is communicated with a discharging frame, and an outer cylinder is rotationally arranged on the surface of the inner cylinder; a second sieve hole and a first sieve hole are formed in the inner cylinder and the outer cylinder in a penetrating mode respectively, through grooves are formed in the bottom ends of the inner cylinder and the outer cylinder in a penetrating mode, and a baffle is arranged on the outer side of the outer cylinder in a sliding mode; a mounting plate is arranged at one end of the inner barrel, a multi-stage air cylinder is mounted on the mounting plate, and the telescopic end of the multi-stage air cylinder is fixedly connected with one side of a baffle. The baffle is driven by the multi-stage air cylinder to move, the through groove can be closed or opened, raw materials can be screened conveniently when the through groove is closed, screened large-particle raw materials can be discharged conveniently after the through groove is opened, the overlapping area of the second screening holes and the first screening holes in the inner barrel and the outer barrel can be adjusted, and therefore the raw materials of different sizes can be screened.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production devices, in particular to a screening device for concrete raw materials. Background Art

[0002] Concrete mainly plays a role in skeleton and lubrication, which can make construction more convenient. It has a strong bearing capacity, mainly due to its raw material composition. The raw materials of concrete mainly include cement, gravel, sand, fly ash, expansion agent and antifreeze agent. Before use, these raw materials need to be screened to prevent the presence of some larger particles, which will affect the subsequent use of concrete.

[0003] In an existing authorized patent, a screening device for concrete raw materials, the patent number is CN202022764060.4, which includes an upper shell and a lower shell. The upper shell is a rectangular structure with an open upper end, and the lower shell is a tapered conical structure. A rolling screening mechanism is arranged in the upper shell, and the rolling screening mechanism includes a drum, a rotating shaft, a bearing and a motor. The drum is arranged horizontally, and a plurality of sieve holes are opened on the side wall of the drum. The left and right ends of the drum are connected with a rotating shaft, and bearings matching the rotating shaft are arranged on the side wall of the upper shell. One of the rotating shafts passes through the corresponding bearing and is connected to a motor arranged outside the upper shell. The motor drives the rotating shaft to rotate, thereby driving the drum to rotate. The drum includes an upper semi-cylinder and a lower semi-cylinder connected by fasteners, and a capping mechanism for easy disassembly is arranged on the top of the upper shell.

[0004] The sieve holes of the utility model are not easy to be clogged, and even if they are clogged, they can be cleaned conveniently and promptly. The rolling screening mechanism has a long service life. However, when cleaning the large particles after screening, the device needs to be disassembled, which is complicated and inconvenient to clean the remaining raw materials.

[0005] Therefore, we make improvements to this and propose a screening device for concrete raw materials. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model discloses a screening device for concrete raw materials, comprising a support frame, a cover plate fixedly arranged on the support frame, an inner cylinder rotatably arranged inside the cover plate, a material discharge frame connected to the bottom end of the cover plate, an outer cylinder rotatably arranged on the surface of the inner cylinder, and sieve hole two and sieve hole one are respectively provided on the inner cylinder and the outer cylinder, a through groove is provided on the bottom ends of the inner cylinder and the outer cylinder, and a baffle is slidably provided on the outer side of the outer cylinder;

[0008] A rotating shaft is fixedly provided at one end of the inner cylinder, and the outer cylinder is rotatably connected to the rotating shaft, a collar is fixedly provided on the rotating shaft, a mounting plate is fixedly connected to the surface of the collar, and a multi-stage cylinder is mounted on the mounting plate, and the telescopic end of the multi-stage cylinder is fixedly connected to one side of the baffle; a connecting shaft is fixedly connected to the other end of the inner cylinder, and a mounting ring is fixedly provided on the outer cylinder, and the connecting shaft rotatably passes through the inner cylinder and is rotatably connected to the mounting ring.

[0009] As a preferred technical solution of the utility model, the sieve hole 1 and the sieve hole 2 have the same size, and the sieve hole 1 and the sieve hole 2 partially overlap.

[0010] As a preferred technical solution of the utility model, the baffle is located at the through slot, and the size of the baffle is larger than the size of the through slot.

[0011] As a preferred technical solution of the utility model, a motor is fixedly mounted on one end of the cover plate, an output end of the motor is fixedly connected to one end of the rotating shaft, and a gap is provided between the cover plate and the outer cylinder.

[0012] As a preferred technical solution of the utility model, a plurality of slots are uniformly and circumferentially formed on the connecting shaft and the mounting ring, and a clamping plate is clamped in the slot.

[0013] As a preferred technical solution of the utility model, a feed opening connected to a feed frame is provided at the bottom end of the cover plate, and the bottom end of the feed frame is through-opened; a feed opening is provided on the top surface of the cover plate, and the size of the feed opening is larger than the size of the through slot.

[0014] The beneficial effects of the utility model are:

[0015] In the utility model, the baffle is driven to move by a multi-stage cylinder, so that the through slot can be closed or opened. When closed, it is convenient to screen the raw materials, and when opened, it is convenient to discharge the large particles of raw materials screened out, and the overlapping area of ​​the sieve hole 2 and the sieve hole 1 on the inner cylinder and the outer cylinder can be adjusted, so that raw materials of different sizes can be screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a screening device for concrete raw materials in the utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of a screening device for concrete raw materials in the utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of a screening device for concrete raw materials in the utility model. Figure 3 ;

[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0021] In the figure: 1. support frame; 2. cover plate; 3. outer cylinder; 4. motor; 5. unloading frame; 6. inner cylinder; 7. rotating shaft; 8. sleeve ring; 9. mounting plate; 10. multi-stage cylinder; 11. connecting shaft; 12. mounting ring; 13. slot; 14. baffle; 15. sieve hole 1; 16. sieve hole 2; 17. through slot. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figures 1 to 4 As shown, the utility model is a screening device for concrete raw materials, comprising a support frame 1, a cover plate 2 is fixedly arranged on the support frame 1, an inner cylinder 6 is rotatably arranged inside the cover plate 2, a feeding frame 5 is connected to the bottom end of the cover plate 2, an outer cylinder 3 is rotatably arranged on the surface of the inner cylinder 6, and a sieve hole 2 16 and a sieve hole 15 are respectively opened through the inner cylinder 6 and the outer cylinder 3, a through groove is opened through the bottom ends of the inner cylinder 6 and the outer cylinder 3, and a baffle 14 is slidably arranged on the outer side of the outer cylinder 3; by the different overlapping areas of the sieve hole 15 and the sieve hole 2 16, raw materials of different sizes can be screened, large raw materials will remain in the inner cylinder 6, small raw materials will pass through the holes and be discharged onto the cover plate 2, and continue to pass downward through the feeding frame 5, and a container for receiving the raw materials can be placed at the bottom end of the feeding frame 5.

[0024] During screening, the baffle 14 will block the through slot to prevent the raw materials from falling through the through slot. When the screening is completed, the baffle 14 can be moved to no longer block the through slot, thereby facilitating the discharge of the raw materials remaining in the inner tube 6. Compared with disassembling the equipment to remove the raw materials, this method is simpler and faster.

[0025] A rotating shaft 7 is fixedly provided at one end of the inner cylinder 6, and the outer cylinder 3 is rotatably connected to the rotating shaft 7. A collar 8 is fixedly sleeved on the rotating shaft 7, and a mounting plate 9 is fixedly connected to the surface of the collar 8, and a multi-stage cylinder 10 is installed on the mounting plate 9, and the telescopic end of the multi-stage cylinder 10 is fixedly connected to one side of the baffle 14; a connecting shaft 11 is fixedly connected to the other end of the inner cylinder 6, and a mounting ring 12 is fixedly provided on the outer cylinder 3, and the connecting shaft 11 rotatably penetrates the inner cylinder 6 and is rotatably connected to the mounting ring 12.

[0026] The rotating shaft 7 can drive the inner cylinder 6 to rotate. When the inner cylinder 6 is fixed to the outer cylinder 3, it can drive the outer cylinder 3 to rotate together, thereby driving the raw materials in the inner cylinder 6 to roll, so that the raw materials smaller than the hole fall down, and the multi-stage cylinder 10 can drive the baffle 14 to move, so that the baffle 14 is located at different positions according to different usage requirements.

[0027] The sieve hole 15 and the sieve hole 2 16 have the same size, and the sieve hole 15 and the sieve hole 2 16 partially overlap. The overlapping area of ​​the sieve hole 15 and the sieve hole 2 16 can be adjusted according to demand. A plurality of card slots 13 are evenly opened in the circumferential direction on the connecting shaft 11 and the mounting ring 12, and a card plate is clamped in the card slot 13. When it is necessary to adjust the overlapping area of ​​the sieve hole 15 and the sieve hole 2 16, the card plate is removed and the mounting ring 12 is rotated. When the position of the mounting ring 12 is determined, the card plate is inserted into the card slot 13.

[0028] The baffle plate 14 is located at the through slot, and the size of the baffle plate 14 is larger than the size of the through slot. The through slot can be well shielded by the baffle plate 14, thereby preventing the raw materials from being discharged from the through slot during screening.

[0029] A motor 4 is fixedly mounted on one end of the cover plate 2, and the output end of the motor 4 is fixedly connected to one end of the rotating shaft 7, and there is a gap between the cover plate 2 and the outer cylinder 3. The driving of the motor 4 is controlled by an existing control switch arranged on the support frame 1. The motor 4 drives the rotating shaft 7 to rotate, thereby driving the inner cylinder 6 to rotate. After the inner cylinder 6 and the outer cylinder 3 are fixed, the outer cylinder 3 is also driven to rotate together.

[0030] The bottom end of the cover plate 2 is provided with a material discharge port connected to the material discharge frame 5, and the bottom end of the material discharge frame 5 is through-through; the top surface of the cover plate 2 is provided with a material feed port, and the size of the material feed port is larger than the size of the through slot. When material is required to be fed, the through slot 17 can be rotated to the position located at the top surface, and the raw materials to be screened can be added into the through slot 17 through the material feed port. When material is discharged, the through slot 17 can be located at the bottom surface.

[0031] During operation, the baffle 14 is driven to move by the multi-stage cylinder 10, and the through slot 17 can be closed or opened. When closed, it is convenient to screen the raw materials. When opened, it is convenient to discharge the large particles of raw materials screened out. The overlapping area of ​​the sieve hole 2 16 and the sieve hole 1 15 on the inner cylinder 6 and the outer cylinder 3 can be adjusted, so that raw materials of different sizes can be screened.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screening device for concrete raw materials, comprising a support frame (1), a cover plate (2) fixedly arranged on the support frame (1), an inner cylinder (6) rotatably arranged inside the cover plate (2), characterized in that: The bottom end of the cover plate (2) is connected to a material unloading frame (5), an outer cylinder (3) is rotatably arranged on the surface of the inner cylinder (6), and a second sieve hole (16) and a first sieve hole (15) are respectively provided through the inner cylinder (6) and the outer cylinder (3), a through groove (17) is provided through the bottom ends of the inner cylinder (6) and the outer cylinder (3), and a baffle (14) is slidably arranged on the outer side of the outer cylinder (3); A rotating shaft (7) is fixedly provided at one end of the inner cylinder (6), and the outer cylinder (3) is rotatably connected to the rotating shaft (7); a sleeve (8) is fixedly provided on the rotating shaft (7); a mounting plate (9) is fixedly connected to the surface of the sleeve (8), and a multi-stage cylinder (10) is mounted on the mounting plate (9); the telescopic end of the multi-stage cylinder (10) is fixedly connected to one side of a baffle (14); a connecting shaft (11) is fixedly connected to the other end of the inner cylinder (6), and a mounting ring (12) is fixedly provided on the outer cylinder (3); the connecting shaft (11) rotatably penetrates the inner cylinder (6) and is rotatably connected to the mounting ring (12).

2. A screening device for concrete raw materials according to claim 1, characterized in that: The sieve hole 1 (15) and the sieve hole 2 (16) have the same size, and the sieve hole 1 (15) and the sieve hole 2 (16) partially overlap.

3. A screening device for concrete raw materials according to claim 1, characterized in that: The baffle plate (14) is located at the through slot (17), and the size of the baffle plate (14) is larger than the size of the through slot (17).

4. A screening device for concrete raw materials according to claim 1, characterized in that: A motor (4) is fixedly mounted on one end of the cover plate (2), an output end of the motor (4) is fixedly connected to one end of a rotating shaft (7), and a gap is provided between the cover plate (2) and the outer cylinder (3).

5. The concrete raw material screening device according to claim 1, characterized in that: The connecting shaft (11) and the mounting ring (12) are both provided with a plurality of slots (13) uniformly extending through the circumference, and a clamping plate is clamped in the slots (13).

6. The concrete raw material screening device according to claim 1, characterized in that: The bottom end of the cover plate (2) is provided with a material discharge port connected to the material discharge frame (5), and the bottom end of the material discharge frame (5) is through-opened; the top surface of the cover plate (2) is through-opened with a material feed port, and the size of the material feed port is larger than the size of the through slot (17).

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