Multi-layer screening device for building materials

Abstract

The utility model relates to a screening device, in particular to a building material multi-layer screening device. The building material multi-layer screening device comprises installation frames, a first screening bin, buffer springs, a blanking plate, a second screening bin and the like, the first screening bin is connected between the two installation frames in a sliding mode, and the buffer springs distributed left and right are connected between the first screening bin and the installation frames. A discharging plate is fixedly connected to the right side of the lower portion of the first screening bin, and a second screening bin is installed on the edge of the bottom of the first screening bin. The large-capacity discharging frame is arranged, the electric sliding rail and the electric sliding block are combined, the lifting plate is controlled to move downwards and upwards, automatic opening and closing of the two discharging ports of the discharging frame are achieved, gravel screening in batches is facilitated through the design, the working efficiency of the screening machine is effectively improved, the pursuit of manual intervention is reduced, and the working efficiency of the screening machine is improved. And the continuity and the automation level of the screening process are improved.

Description

Technical Field

[0001] The utility model relates to a screening device, in particular to a multi-layer screening device for building materials. Background Technique

[0002] Building materials refer to various materials used in construction projects. These materials are used to form different parts of a building or structure, including structural, decorative, and functional components. Construction sand and gravel are also building materials, and they need to be screened before use to ensure that the particle size distribution of the sand and gravel meets specific engineering requirements.

[0003] A patent with the patent authorization announcement number CN207563245U discloses a construction sand and gravel screening machine, which includes an operation table body. The top of the operation table body is fixedly connected with a machine shell. The inside of the machine shell is provided with a first spring and a second spring. One end of each of the first spring and the second spring is fixedly connected to the upper surface of the operation table body. The ends of the first spring and the second spring far away from the operation table body are both fixedly connected with a screening box. Although the above patent has the advantages of fast separation speed, large separation area, and complete separation, there are still deficiencies in actual use. For example, the capacity of the feeding box is limited, resulting in the need for manual intermittent feeding of sand and gravel into the feeding box during the screening process, which not only increases the operation frequency of the staff but also reduces the continuity and efficiency of screening.

[0004] Therefore, there is a particular need for a multi-layer screening device for building materials to solve the problems existing in the prior art. Summary of the Utility Model

[0005] In order to overcome the shortcomings that the capacity of the feeding box of the existing patent is limited, resulting in the need for manual intermittent feeding of sand and gravel into the feeding box during the screening process, which not only increases the operation frequency of the staff but also reduces the continuity and efficiency of screening, the utility model provides a multi-layer screening device for building materials.

[0006] The utility model is achieved through the following technical means: A multi-layer screening device for building materials includes an installation frame, a first screening bin, buffer springs, a blanking plate, a second screening bin, a third screening bin, guide rods, a baffle, a return spring, and a vibration assembly. A first screening bin is slidably connected between two installation frames, and buffer springs distributed left and right are connected between the first screening bin and the installation frames. A blanking plate is fixedly connected to the lower right side of the first screening bin. A second screening bin is installed at the bottom edge position of the first screening bin. A third screening bin is fixedly connected to the upper part of the first screening bin, and guide rods symmetrically arranged front and back are fixedly connected to the right side. A baffle is slidably connected between the two guide rods, and a return spring for assisting in resetting is sleeved outside, with both ends of the return spring connected to the baffle and the guide rods respectively. A vibration assembly is arranged on the left installation frame, and a feeding mechanism is also included. The feeding mechanism is arranged between the two installation frames.

[0007] Further, the blanking mechanism includes a blanking frame, an electric slide rail, an electric slider and a lifting plate. The blanking frame is installed between the upper parts of the two mounting brackets. The lower part of the blanking frame is installed with electric slide rails distributed front and back. An electric slider is slidably connected between the two electric slide rails. The electric slider is installed with a lifting plate, and the lifting plate exactly blocks the two discharge ports of the blanking frame.

[0008] Further, the vibration assembly includes a cylinder and a convex rod. The cylinder is installed on the upper part of the left mounting bracket. The telescopic rod of the cylinder is installed with a convex rod, and the convex rod is located inside the square groove on the left side of the third screening bin.

[0009] Further, it also includes a scraper and a pull rod. A pull rod is slidably connected between the lower ends of the two guide rods. The right side of the pull rod is fixedly connected with a scraper. The scraper is located inside the third screening bin and contacts it. And chutes for accommodating the movement of the scraper are provided on both the front and back sides of the third screening bin.

[0010] Further, the screening holes of the third screening bin are larger than those of the first screening bin, and the screening holes of the first screening bin are larger than those of the second screening bin.

[0011] Further, an anti-slip sleeve is provided outside the right end of the pull rod.

[0012] From the above description of the structure of the present invention, the design starting point, concept and advantages of the present invention are as follows:

[0013] By setting a large-capacity blanking frame in the present invention, combined with an electric slide rail and an electric slider, controlling the lifting plate to move downward and upward, the automatic opening and closing of the two discharge ports of the blanking frame are realized. This design is convenient for screening sand and gravel in batches, effectively improves the working efficiency of the screening machine, reduces the pursuit of manual intervention, and improves the continuity and automation level of the screening process.

[0014] By setting a cylinder and a convex rod in the present invention, the cylinder is opened, and the telescopic rod of the cylinder is controlled to retract and extend back and forth, thereby driving the convex rod to move up and down, continuously pushing the third screening bin to move left and right. The third screening bin simultaneously drives the first screening bin to move left and right, so that the sand and gravel are vibrated and pass through the third screening bin and the first screening bin, thereby accelerating the screening speed of the sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 is a partial cross-sectional view of the first screening bin, buffer spring, blanking plate and other components of the present invention.

[0017] Figure 3This is a three-dimensional structure schematic diagram of components such as the third screening bin, scraper, and pull rod of the present utility model.

[0018] Figure 4 This is a partial cross-sectional view of components such as the blanking frame, electric slide rail, and electric slider of the present utility model.

[0019] Figure 5 This is a three-dimensional structure schematic of components such as the third screening bin, cylinder, and convex rod of the present utility model.

[0020] In the above drawings: 1: mounting frame, 20: first screening bin, 21: buffer spring, 3: blanking plate, 4: second screening bin, 50: third screening bin, 51: scraper, 52: pull rod, 53: guide rod, 54: baffle, 55: return spring, 60: blanking frame, 61: electric slide rail, 62: electric slider, 63: lifting plate, 70: cylinder, 71: convex rod. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] Embodiment: A multi-layer screening device for building materials, refer to Figures 1-5As shown in the figure, it includes a mounting frame 1, a first screening bin 20, a buffer spring 21, a blanking plate 3, a second screening bin 4, a third screening bin 50, a scraper 51, a pull rod 52, a guide rod 53, a baffle 54, a return spring 55 and a vibration assembly. A first screening bin 20 is slidably connected between two mounting frames 1, and buffer springs 21 distributed left and right are connected between the first screening bin 20 and the mounting frame 1. The lower right side of the first screening bin 20 is connected with a blanking plate 3 by welding. The blanking plate 3 is of an inclined structure, and the inclined surface runs from the upper left to the lower right. The bottom edge position of the first screening bin 20 is connected with a second screening bin 4 by bolts. The upper part of the first screening bin 20 is connected with a third screening bin 50 by welding, and guide rods 53 symmetrically distributed front and back are connected to the right side by welding. The screening holes of the third screening bin 50 are larger than those of the first screening bin 20, and the screening holes of the first screening bin 20 are larger than those of the second screening bin 4, and so on, which is convenient for screening sand and gravel of different particles. A baffle 54 is slidably connected between the two outer sides of the two guide rods 53, and a return spring 55 for assisting in resetting is sleeved outside. The two ends of the return spring 55 are respectively connected with the baffle 54 and the guide rod 53. A pull rod 52 is slidably connected between the lower ends of the two guide rods 53. An anti-slip sleeve made of rubber is arranged outside the right end of the pull rod 52, and a scraper 51 is connected to the right side of the pull rod 52 by welding. The scraper 51 is located inside the third screening bin 50 and contacts it, and chutes for accommodating the movement of the scraper 51 are arranged on both the front and back sides of the third screening bin 50. A vibration assembly is arranged on the left mounting frame 1, and a blanking mechanism is also included. A blanking mechanism is arranged between the two mounting frames 1.

[0023] Refer to Figure 1 , Figure 4 and Figure 5 As shown in the figure, the blanking mechanism includes a blanking frame 60, an electric slide rail 61, an electric slider 62 and a lifting plate 63. A blanking frame 60 is connected between the upper parts of the two mounting frames 1 by bolts. The lower part of the blanking frame 60 is connected with electric slide rails 61 distributed front and back by bolts. An electric slider 62 is slidably connected between the two electric slide rails 61. A lifting plate 63 is connected to the electric slider 62 by bolts. The lifting plate 63 just blocks the two discharge ports of the blanking frame 60.

[0024] Refer to Figure 1 and Figure 5 As shown in the figure, the vibration assembly includes a cylinder 70 and a convex rod 71. A cylinder 70 is connected to the upper part of the left mounting frame 1 by bolts. A convex rod 71 is connected to the telescopic rod of the cylinder 70 by bolts. The convex rod 71 is located inside the square groove on the left side of the third screening bin 50. A damping pad for noise reduction is arranged on the protruding edge of the convex rod 71.

[0025] First, the staff installs the mounting frame 1 on the external support to fix the device. Then, place the two prepared material receiving bins respectively under the second screening bin 4 and the blanking plate 3. Subsequently, operate the loader to shovel a bucket of sand and gravel into the blanking frame 60, turn on the electric slide rail 61, and control the electric slider 62 to drive the lifting plate 63 to move downward, thereby opening the two discharge ports of the blanking frame 60, so that the sand and gravel flow out from the discharge ports onto the third screening bin 50. After an appropriate amount of sand and gravel has flowed out, control the electric slider 62 to drive the lifting plate 63 to move upward, thereby closing the two discharge ports of the blanking frame 60, achieving the purpose of controlling the blanking, which is convenient for screening sand and gravel in batches and also avoids excessive sand and gravel accumulating on the third screening bin 50 and causing blockage. Then, turn off the electric slide rail 61, turn on the air cylinder 70, and control the telescopic rod of the air cylinder 70 to retract and extend back and forth, thereby driving the convex rod 71 to move up and down, continuously pushing the third screening bin 50 to move left and right. The third screening bin 50 simultaneously drives the first screening bin 20 to move left and right, causing the sand and gravel to vibrate and pass through the third screening bin 50 and the first screening bin 20, thereby accelerating the screening speed of the sand and gravel. During this process, the buffer spring 21 is continuously compressed or stretched by the first screening bin 20 and deforms. During screening, the large-particle sand and gravel stay on the third screening bin 50, and the screened medium-particle and small-particle sand and gravel fall onto the first screening bin 20 for secondary screening. The medium-particle sand and gravel stay on the first screening bin 20, and the screened small-particle sand and gravel fall out through the second screening bin 4 into a pre-placed material receiving bin. At the same time, the medium-particle sand and gravel on the first screening bin 20 slide down from the blanking plate 3 into another pre-placed material receiving bin, realizing the automatic collection of small-particle and medium-particle sand and gravel. After screening is completed, wait for the convex rod 71 to move back to its original position, turn off the air cylinder 70, and the buffer spring 21 will return to its original state. Then, pull up the baffle 54 to open the third screening bin 50, and the return spring 55 will be compressed accordingly. Then, place the prepared third material receiving bin against the right side wall of the first screening bin 20, hold the pull rod 52 with your hand and pull the scraper 51 to the right to scrape off the large-particle sand and gravel on the third screening bin 50, which will fall into the third material receiving bin for collection. After scraping is completed, push the scraper 51 to the left to reset, release the baffle 54, and the return spring 55 will return to its original state, causing the baffle 54 to move downward to close the third screening bin 50. Finally, repeat the above steps to continue screening the sand and gravel.

[0026] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A multi-layer screening device for building materials, comprising a mounting frame (1), a first screening bin (20), buffer springs (21), a blanking plate (3), a second screening bin (4), a third screening bin (50), guide rods (53), a baffle plate (54), a return spring (55) and a vibration assembly. A first screening bin (20) is slidably connected between two mounting frames (1), and buffer springs (21) distributed left and right are connected between the first screening bin (20) and the mounting frames (1). A blanking plate (3) is fixedly connected to the lower right side of the first screening bin (20). A second screening bin (4) is installed at the bottom edge position of the first screening bin (20). A third screening bin (50) is fixedly connected to the upper part of the first screening bin (20), and guide rods (53) symmetrically arranged front and back are fixedly connected to the right side. A baffle plate (54) is slidably connected between the two guide rods (53), and a return spring (55) for assisting in resetting is sleeved outside, and the two ends of the return spring (55) are respectively connected to the baffle plate (54) and the guide rods (53). A vibration assembly is arranged on the left mounting frame (1), and its characteristics are that, It further includes a blanking mechanism, and the blanking mechanism is arranged between the two mounting frames (1).

2. The multi-layer screening device for building materials according to claim 1, characterized in that, The blanking mechanism includes a blanking frame (60), an electric slide rail (61), an electric slider (62) and a lifting plate (63). The blanking frame (60) is installed between the upper parts of the two mounting frames (1). The electric slide rail (61) distributed front and back is installed at the lower part of the blanking frame (60). The electric slider (62) is slidably connected between the two electric slide rails (61). The lifting plate (63) is installed on the electric slider (62), and the lifting plate (63) just blocks the two discharge ports of the blanking frame (60).

3. The multi-layer screening device for building materials according to claim 2, wherein The vibration assembly includes a cylinder (70) and a convex rod (71). The cylinder (70) is installed on the upper part of the left mounting frame (1). The convex rod (71) is installed on the telescopic rod of the cylinder (70), and the convex rod (71) is located inside the square groove on the left side of the third screening bin (50).

4. The multi-layer screening device for building materials according to claim 3, characterized in that, It further includes a scraper (51) and a pull rod (52). The pull rod (52) is slidably connected between the lower ends of the two guide rods (53). The scraper (51) is fixedly connected to the right side of the pull rod (52). The scraper (51) is located inside the third screening bin (50) and is in contact with it. Chutes for accommodating the movement of the scraper (51) are provided on both the front and back sides of the third screening bin (50).

5. The multi-layer screening device for building materials according to claim 4, characterized in that, The screening holes of the third screening bin (50) are larger than those of the first screening bin (20), and the screening holes of the first screening bin (20) are larger than those of the second screening bin (4).

6. The multi-layer screening device for building materials according to claim 5, wherein, An anti-slip sleeve is provided outside the right end of the pull rod (52).

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