Gravel multi-stage sorting and conveying device

Abstract

The utility model discloses a gravel multi-stage sorting and conveying device which comprises two sets of installing plates (1) which are arranged in parallel, a plurality of sets of sieve plate frames (2) which are arranged in an inclined mode are arranged between the installing plates (1), the ends of the sieve plate frames (2) are connected with one another, a feeding hopper (9) is arranged on the upper side of the upper end of the sieve plate frame (2) on the uppermost side, and a collecting box (16) is arranged on the lower portion of the sieve plate frame (2) on the lowermost side. A belt conveyor (17) is arranged on the lower side of the joint of the sieve plate frame (2), the sieve plate frame (2) comprises sieve plates (6), joint blocks (8) are arranged on the upper sides of the sieve plates (6), joint grooves (7) corresponding to the joint blocks (8) are formed in the lower sides of the sieve plates (6), mounting columns (10) are arranged on the two sides of the sieve plates (6), and the aperture of sieve pores in the sieve plate (6) on the upper side is larger than that of sieve pores in the sieve plate (6) on the lower side. Gravel can be subjected to sufficient multi-stage screening, and the screening quality is good.

Description

Technical Field

[0001] The utility model relates to a sand and gravel conveying device, in particular to a multi-stage sorting and conveying device for sand and gravel. Background Technique

[0002] Sand and gravel is one of the most commonly used materials in the construction field. After years of mining, natural sand resources are rapidly decreasing, and in some areas, natural sand is almost exhausted. In order to protect river embankments and dams and maintain ecological balance, local governments will increase the limits on river use and strictly prohibit sand mining. As natural sand resources rapidly decline, the use of manufactured sand is gradually increasing. The product quality of sand and gravel must be qualified. It should be tested before use and have a factory quality certificate and test sheet to ensure that the particle size of sand and gravel meets the standards.

[0003] Therefore, it is necessary to sort sand and gravel during feeding. For example, the patent with the application number 202320117528.1 discloses a concrete sand and gravel grading and screening conveying assembly, which can achieve multi-stage screening of sand and gravel with different particle size ranges according to construction needs during the screening of construction sand and gravel. The overall screening effect is good, and at the same time, it can achieve rapid diversion and conveying of the screened sand and gravel with different particle size ranges, effectively ensuring the screening and rapid conveying of sand and gravel. However, when some sand and gravel fall from the upper rigid folding plate, they will directly fall on the edge of the lower inverted circular structure, which will affect the screening quality. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multi-stage sorting and conveying device for sand and gravel. It can enable sand and gravel to be fully screened at multiple stages with good screening quality.

[0005] The technical solution of the utility model: A multi-stage sorting and conveying device for sand and gravel includes two groups of parallel installation plates. Between the installation plates, there are multiple groups of inclined screen plate frames with their ends connected to each other. At the upper side of the upper most screen plate frame, there is a feed hopper. At the lower part of the lowermost screen plate frame, there is a collection box. Below the connection of the screen plate frames, there is a belt conveyor. The screen plate frame includes a screen plate. On the upper side of the screen plate, there are joint blocks. On the lower side of the screen plate, there are joint grooves corresponding to the joint blocks. On both sides of the screen plate, there are installation columns. And the aperture of the screen holes in the upper screen plate is larger than that in the lower screen plate. Below the screen plate frame, there is a guide plate parallel to the screen plate frame and capable of guiding sand and gravel to the connection of the screen plate frames. Installation columns are also provided on both sides of the guide plate. A vibration motor is provided outside the installation plate.

[0006] In the aforementioned multi-stage sorting and conveying device for sand and gravel, the installation plates are provided with installation holes corresponding to the installation columns. Outside the installation holes, there are limit sleeves for locking the installation columns, and the limit sleeves are provided with first positioning holes.

[0007] In the aforementioned multi-stage sorting and conveying device for sand and gravel, the installation columns are provided with second positioning holes corresponding to the first positioning holes.

[0008] Compared with the prior art, the utility model conducts multi-stage sorting of sand and gravel through multiple groups of sieve plate frames which are inclined and the pore size of the sieve plates continuously increases, and conveys them through a belt conveyor. The sieve plates are installed through mounting columns, which facilitates the replacement of the sieve plates, the adjustment of the screening criteria and the replacement of damaged sieve plates. The sand and gravel falling from the sieve holes of the sieve plates will be conveyed to the connection of the sieve plate frames through guide plates, enabling the sand and gravel to move a longer distance on the sieve plates and improving the screening quality. Description of the Drawings

[0009] Figure 1 is a schematic structural view of the utility model;

[0010] Figure 2 is a schematic structural view of the mounting plate of the utility model.

[0011] The reference signs in the drawings are: 1 - mounting plate, 2 - sieve plate frame, 3 - guide plate, 5 - vibration motor, 6 - sieve plate, 7 - engaging groove, 8 - engaging block, 9 - feed hopper, 10 - mounting column, 11 - mounting hole, 12 - limiting sleeve, 14 - first positioning hole, 15 - second positioning hole, 16 - collection box, 17 - belt conveyor. Detailed Embodiment

[0012] The following further describes the utility model in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the utility model.

[0013] Embodiment. A sand and gravel multi-stage sorting and conveying device is configured as Figure 1-2 shown, including two groups of parallel mounting plates 1. A plurality of inclined sieve plate frames 2 with connected ends are arranged between the mounting plates 1. A feed hopper 9 is provided on the upper side of the upper-most sieve plate frame 2, a collection box 16 is provided below the lower-most sieve plate frame 2, a belt conveyor 17 is provided below the connection of the sieve plate frames 2. The sieve plate frame 2 includes a sieve plate 6. An engaging block 8 is provided on the upper side of the sieve plate 6, an engaging groove 7 corresponding to the engaging block 8 is provided on the lower side of the sieve plate 6. Mounting columns 10 are provided on both sides of the sieve plate 6, and the pore size of the sieve holes in the upper sieve plate 6 is larger than that of the sieve holes in the lower sieve plate 6. A guide plate 3 parallel to the sieve plate frame 2 and capable of guiding the sand and gravel to the connection of the sieve plate frames 2 is provided below the sieve plate frame 2. Mounting columns 10 are also provided on both sides of the guide plate 3. A vibration motor 5 is provided outside the mounting plate 1.

[0014] Mounting holes 11 corresponding to the mounting columns 10 are provided in the mounting plate 1. A limiting sleeve 12 for locking the mounting columns 10 is provided outside the mounting holes 11, and a first positioning hole 14 is provided on the limiting sleeve 12.

[0015] Second positioning holes 15 corresponding to the first positioning holes 14 are provided on the mounting columns 10.

[0016] Principle of the utility model: When in use, sand and gravel are added from the feed hopper 9 and fall on the upper end of the uppermost sieve plate frame 2. The sand and gravel will move along the sieve plate 6. The sand and gravel that meet the standards will fall through the sieve holes, fall on the guide plate 3, and will move along the guide plate 3 to the inner side of the connection of the sieve plate frame 2 and fall on the sieve plate 6 of the next sieve plate frame 2. In this way, the sand and gravel can move a sufficient distance on the sieve plate 6 to prevent the sand and gravel from falling directly and falling near the belt conveyor end without being fully screened, thereby improving the screening quality. The sand and gravel that do not meet the standards will be sent onto the belt conveyor 17 and conveyed through the belt conveyor 17. A vibration motor 5 is provided outside the mounting plate 1 to prevent the sand and gravel from piling up. Since the screening standards may be different, there may be a situation where different sieve plates need to be replaced, or the sieve plate 6 is severely worn or blocked and needs to be replaced. The sieve plate frame 2 of this application is installed by inserting the mounting post 10 into the mounting hole 11 and the limit sleeve 12. During installation, the engaging blocks 8 and engaging grooves 7 at the upper and lower ends of the sieve plate 6 will cooperate with the engaging grooves 7 and engaging blocks 8 on the upper and lower sieve plates to achieve guiding and limiting and improve the stability of the sieve plate frame 2. Finally, fasteners such as screws pass through the first positioning hole 14 and the second positioning hole 15 to tightly connect the mounting post 10 and the limit sleeve 12, making the connection more reliable.

Claims

1. A sand and gravel multi-stage sorting and conveying device, characterized in that: The invention comprises two sets of parallelly arranged mounting plates (1), a plurality of sets of inclinedly arranged sieve plate frames (2) are arranged between the mounting plates (1), a feed hopper (9) is arranged on the upper side of the upper end of the uppermost sieve plate frame (2), a collecting box (16) is arranged on the lower part of the lowermost sieve plate frame (2), a belt conveyor (17) is arranged on the lower side of the connection of the sieve plate frames (2), the sieve plate frame (2) comprises a sieve plate (6), a joint block (8) is arranged on the upper side of the sieve plate (6), and the sieve plate (6) is provided with a plurality of meshing blocks (14) and meshing plates (15). A joint groove (7) corresponding to the joint block (8) is provided on the lower side of the plate (6), mounting columns (10) are provided on both sides of the screen plate (6), and the aperture of the screen hole in the upper screen plate (6) is larger than the aperture of the screen hole in the lower screen plate (6). A guide plate (3) parallel to the screen plate frame (2) and capable of guiding sand and gravel to the connection with the screen plate frame (2) is provided under the screen plate frame (2), mounting columns (10) are also provided on both sides of the guide plate (3), and a vibration motor (5) is provided on the outer side of the mounting plate (1).

2. The sand and gravel multi-stage sorting and conveying device according to claim 1 is characterized in that: The mounting plate (1) is provided with a mounting hole (11) corresponding to the mounting column (10), a limiting sleeve (12) for locking the mounting column (10) is provided outside the mounting hole (11), and a first positioning hole (14) is provided on the limiting sleeve (12).

3. The sand and gravel multi-stage sorting and conveying device according to claim 2 is characterized in that: The installation column (10) is provided with a second positioning hole (15) corresponding to the first positioning hole (14).

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