Fine sand screening mechanism for material opening of aggregate storage

Abstract

The utility model provides an aggregate storage port fine sand screening mechanism which comprises a feeding channel connected with a storage port, the end, away from the storage port, of the feeding channel is communicated with a connecting box, the end, away from the feeding channel, of the connecting box is connected with a discharging port, and the connecting box is obliquely arranged in the direction of the discharging port. A vibrating motor is arranged on one side wall of the connecting box, a vibrating screen is arranged at the bottom end of the connecting box, a plurality of retarding strips are arranged on the upper end face of the vibrating screen at intervals in the length direction of the vibrating screen, a dust receiving hopper is connected to the lower end face of the vibrating screen, and a dust storage barrel is arranged under the dust receiving hopper. Opening and closing valves are arranged in the middle of the feeding channel and at the bottom end of the ash storage barrel; the screening mechanism is simple in structure, low in manufacturing cost and capable of effectively screening out fine sand and powder attached to aggregate particles, and therefore the quality of aggregate in the truck loading process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening devices, and particularly relates to a fine sand screening mechanism for the material outlet of an aggregate bin. Background Art

[0002] The mine aggregate system produces and sells aggregates of various specifications and sizes. With the production and use of the aggregate system, a certain amount of powder and fine sand have appeared in the 26 - 40 cm and 40 - 80 cm aggregate bins, which has affected the quality of these two specifications of aggregates to a certain extent. The main reasons are as follows: First, when the aggregates are put into the bin, during the process of the aggregates of these two specifications and sizes falling from the inlet of the aggregate bin to the bottom of the bin due to the high drop, the aggregate particles generate a large impact when reaching the bottom of the bin, thus producing powder and crushed sand. Second, the upstream screening system of the aggregate bin fails to completely screen out the powder and fine sand. Especially during production on rainy days, the phenomenon of powder adhering to the aggregates cannot be effectively screened out, and it enters the 26 - 40 mm and 40 - 80 mm aggregate bins for storage together with the aggregates. As a result, a certain amount of powder and fine sand will accumulate at the bottom of the storage bin in the long run. When these two specifications of aggregates are sold, the powder and fine sand will enter the carriage through the material outlet during loading, which will affect the quality of the two specifications of aggregates sold to a certain extent.

[0003] In order to improve the quality of aggregate sales and reduce the phenomenon of powder and fine materials of aggregates being loaded, a new screening mechanism is now decided to be added at the aggregate discharge port to achieve the purpose of screening out the fine sand and powder of the aggregates. Summary of the Invention

[0004] The utility model provides a fine sand screening mechanism for the material outlet of an aggregate bin, which has a simple structure and low manufacturing cost, and can effectively screen out the fine sand and powder attached to the aggregate particles to improve the quality of the aggregates during loading. The specific scheme is as follows:

[0005] A fine sand screening mechanism for the material outlet of an aggregate bin includes a feed channel connected to the bin material outlet. One end of the feed channel far from the bin material outlet is communicated with a connection box. One end of the connection box far from the feed channel is connected to a discharge port. The connection box is inclined towards the discharge port. A vibration motor is arranged on one side wall of the connection box. A vibration screen is arranged at the bottom end of the connection box. A plurality of slow - down strips are arranged at intervals along the length direction of the upper end surface of the vibration screen. A dust - receiving hopper is connected to the lower end surface of the vibration screen. A dust - storage bucket is arranged directly below the dust - receiving hopper. Opening and closing valves are arranged at both the bin material outlet and the dust - storage bucket.

[0006] Furthermore, the buffer mechanism includes a buffer plate and a first compression spring. A plurality of buffer plates are alternately arranged on both sides of the connection box. Both ends of the plurality of buffer plates are rotatably connected to both sides of the connection box, and their free ends are inclined downward. Two first compression springs are arranged in parallel between the lower side of the buffer plate and the side wall of the connection box.

[0007] Further, on both sides of the connection box on the lower side of the vibrating screen mesh, a number of mounting blocks are arranged at intervals along its length direction, and a second compression spring is connected between each of the number of mounting blocks and the vibrating screen mesh.

[0008] Furthermore, on the side wall of the connection box on the upper side of the vibrating screen mesh, two long strip-shaped mounting plates are arranged at intervals. The two mounting plates are perpendicular to the fine sand conveying direction. A number of vertically downward blocking rods are arranged at intervals along the length direction of the two mounting plates, and the blocking rods on the two mounting plates are arranged in a staggered manner.

[0009] Still further, a number of the slow-down strips are all of S-shaped structures.

[0010] The beneficial effects of the present utility model are as follows:

[0011] For the fine sand screening mechanism at the material outlet of the aggregate bin of the present utility model, by arranging a vibrating motor, a vibrating screen mesh, the slow-down strips and a buffer mechanism thereon, the fine sand and powder attached to the aggregate can be screened out. Specifically, when discharging, while opening the opening and closing valve on the feeding channel, the vibrating motor is started. The aggregate enters the feeding channel and slowly enters the vibrating screen mesh in the connection box through a number of buffer plates and the springs arranged under the buffer plates. Due to the deceleration of the slow-down strips, the aggregate has more time to be screened on the vibrating screen mesh. Through the vibration force of the vibrating motor, the fine sand and powder attached to the aggregate can fall into the ash receiving hopper through the vibrating screen mesh. When the aggregate is discharged from the discharge port, high-quality aggregate is obtained. By arranging a number of blocking rods, the fine sand and powder attached to the aggregate can be further separated from it. The screening mechanism of the present utility model has a simple structure, is convenient to operate, has a high screening efficiency, and has a low manufacturing cost and convenient material taking. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model.

[0013] Figure 2 is a bottom view of the connection box of the present utility model in an upward direction.

[0014] Figure 3 is a side sectional view of the present utility model.

[0015] Figure 4 is Figure 3 the enlarged view of part A in

[0016] Figure 5 is a schematic diagram of the internal structure of the present utility model.

[0017] Wherein: feeding channel 1, connection box 2, vibrating motor 3, vibrating screen mesh 4, slow-down strip 5, ash receiving hopper 6, ash storage barrel 7, buffer mechanism 8, buffer plate 81, first compression spring 82, mounting block 9, second compression spring 10, blocking rod 11. Detailed Embodiments

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below 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 the embodiments.

[0019] Refer to Figures 1-5 , a fine sand screening mechanism for the material outlet of an aggregate bin, which includes a feed channel 1 connected to the bin outlet. One end of the feed channel 1 far from the bin outlet is connected to a connection box 2. One end of the connection box 2 far from the feed channel 1 is connected to the discharge port. The connection box 2 is inclined towards the discharge port. A buffer mechanism 8 is provided in the feed channel 1. A vibration motor 3 is provided on one side wall of the connection box 2. A vibrating screen 4 is provided at the bottom end of the connection box 2. The vibrating screen 4 is arranged in the same direction as the connection box 2. A plurality of slow-down strips 5 are arranged at intervals along the length direction of the upper end surface of the vibrating screen 4. The arrangement of the slow-down strips 5 facilitates the extension of the residence time of the aggregate on the vibrating screen 4, and can thoroughly screen the fine sand and powder attached to the aggregate through the vibrating screen 4, making the quality of the sold aggregate better. A dust receiving hopper 6 is connected to the lower end surface of the vibrating screen 4. A dust storage bucket 7 is provided directly below the dust receiving hopper 6. Opening and closing valves are provided on both the bin outlet and the dust storage bucket 7. The setting of the buffer mechanism 8 facilitates a certain buffer when the aggregate enters the connection box 2, reducing the gravity on the vibrating screen 4 and extending its service life.

[0020] The buffer mechanism 8 includes a buffer plate 81 and a first compression spring 82. Several buffer plates 81 are alternately arranged on both sides of the connection box 2. Both ends of the several buffer plates 81 are rotatably connected to both sides of the connection box 2 and their free ends are inclined downward. Two first compression springs 82 are arranged in parallel between the lower side of the buffer plate 81 and the side wall of the connection box 2. When the aggregate enters the feed channel 1, it can gradually fall through the several alternately arranged buffer plates 81, so as to buffer when the aggregate enters the vibrating screen 4, reducing the gravity on the vibrating screen 4 and extending its service life.

[0021] A plurality of groups of mounting blocks 9 are arranged at intervals along the length direction on both sides of the connection box below the vibrating screen 4. A second compression spring 10 is connected between each group of mounting blocks 9 and the vibrating screen 4. The setting of the second compression spring 10 further extends the service life of the vibrating screen 4.

[0022] Two long strip-shaped mounting plates are arranged at intervals on the side wall of the connection box 2 above the vibrating screen 4. The two mounting plates are arranged perpendicular to the fine sand conveying direction. A plurality of vertically downward blocking rods 11 are arranged at intervals along the length direction of the two mounting plates. The blocking rods 11 on the two mounting plates are arranged in a staggered manner. The arrangement of the plurality of blocking rods 11 facilitates slowing down the advancing speed of the aggregate when the aggregate is screened on the vibrating screen 4, and the continuous collision between the vibration force generated by the aggregate at this time and the blocking rods 11 can more effectively screen out the fine sand and powder attached to the aggregate.

[0023] A number of slow-down bars 5 are all in an S-shaped structure, further slowing down the advancing speed of the aggregate.

[0024] Working principle: When selling the aggregate, first open the opening and closing valve of the bin material port and the control switch of the vibration motor 3. The aggregate particles are discharged from the bin material port and enter the feeding channel 1. They gradually pass through a number of buffer plates 81 and enter the vibrating screen 4. Through the vibration force generated by the vibration motor 3 and the mutual cooperation between a number of slow-down bars 5 and a number of blocking bars 11, the fine sand and powder attached to the aggregate particles can be screened out through the vibrating screen 4. The aggregate particles after screening can be loaded and sold through the discharge port. At this time, the screened powder and fine sand enter the ash storage bucket 7 through the ash receiving hopper 6. When the ash storage bucket 7 is full, the opening and closing valve on it can be opened to discharge it.

[0025] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fine sand screening mechanism for aggregate storage opening, characterized in that: The invention comprises a feed channel (1) connected to a material storage port, wherein one end of the feed channel (1) away from the material storage port is connected to a connection box (2), and one end of the connection box (2) away from the feed channel (1) is connected to a discharge port, and the connection box (2) is inclined toward the discharge port. A buffer mechanism (8) is provided in the feed channel (1), and a vibration motor (3) is provided on one side wall of the connection box (2). A vibration screen (4) is provided at the bottom end of the connection box (2), and a plurality of buffer strips (5) are provided at intervals along the length direction of the upper end surface of the vibration screen (4). The lower end surface of the vibration screen (4) is connected to an ash receiving hopper (6), and an ash storage bucket (7) is provided directly below the ash receiving hopper (6). The material storage port and the ash storage bucket (7) are both provided with opening and closing valves.

2. The fine sand screening mechanism for aggregate storage opening according to claim 1, characterized in that: The buffer mechanism (8) comprises a buffer plate (81) and a first compression spring (82); a plurality of buffer plates (81) are alternately arranged on both sides of the connection box (2); both ends of the plurality of buffer plates (81) are rotatably connected to both sides of the connection box (2) and their free ends are arranged to tilt downward; and two first compression springs (82) are arranged in parallel between the lower side of the buffer plate (81) and the side wall of the connection box (2).

3. The fine sand screening mechanism for aggregate storage opening according to claim 1, characterized in that: Arrays of mounting blocks (9) are arranged at intervals along the length direction of the connection box on the lower side of the vibration screen (4), and second compression springs (10) are connected between the arrays of mounting blocks (9) and the vibration screen (4).

4. The fine sand screening mechanism for aggregate storage opening according to claim 1, characterized in that: Two long strip mounting plates are arranged on the side wall of the connection box (2) on the upper side of the vibrating screen (4), and the two mounting plates are arranged perpendicular to the fine sand conveying direction. A plurality of vertical downward blocking rods (11) are arranged on the two mounting plates at intervals along their length direction, and the blocking rods (11) on the two mounting plates are arranged in an interlaced manner.

5. The fine sand screening mechanism for aggregate storage opening according to claim 1, characterized in that: A plurality of the mitigation strips (5) are all S-shaped structures.

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