Gangue fixed screen material distributing device

Abstract

The utility model discloses a gangue fixed screen material distributing device which comprises an inclined fixed screen and a screen plate arranged on the inner side of the fixed screen, a material falling pipe is arranged above the fixed screen, the lower portion of the material falling pipe is connected with a buffering material distributing box, and one side of the buffering material distributing box is provided with a communicated overflow box. Due to the fact that the buffering material distribution box and the overflow box are arranged on the lower portion of the blanking pipe of the gangue fixed screen, the gangue overflows to the screen plate through secondary buffering, abrasion of the screen plate of the fixed screen is reduced, the replacement time of the screen plate is prolonged to 21 days from 7 days, the cost of frequently replacing the screen plate of an enterprise is reduced, and the service life of the enterprise is prolonged. And the labor intensity of personnel replacement is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of gangue fixed screens, in particular to a gangue fixed screen material distribution device. Background Art

[0002] The gangue fixed screen is mainly used to screen the gangue in the coal slurry. In the prior art, the coal slurry falls directly from the drop pipe 2 onto the screen plate of the gangue fixed screen (such as Figure 4 The material directly impacts the feeding end of the screen plate, causing deformation and wear at the impacted part after a period of time. The fixed screen plate is seriously worn out and needs to be replaced in batches every 7 days, which not only consumes the cost of the screen plate, but also requires much trouble and effort to replace. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides a gangue fixed screen material distribution device.

[0004] The utility model is realized through the following technical solutions:

[0005] A gangue fixed screen material distribution device comprises an inclined fixed screen and a screen plate arranged inside the fixed screen, a material drop pipe is arranged obliquely above the fixed screen, a buffer material distribution box is connected to the lower part of the material drop pipe, a connected overflow box is arranged on one side of the buffer material distribution box, and a layer of several buffer bodies is spread on the bottom of the overflow box and the buffer material distribution box.

[0006] Further optionally, an overflow port connected to the overflow box is opened at the upper end of the side of the buffer material distribution box, and a guide inclined plate extending into the overflow box is arranged at the lower part of one side of the overflow port.

[0007] Further optionally, the side of the overflow box is connected and fixed to the fixed screen, an overflow feed port is opened above one side of the overflow box, and the overflow feed port is arranged above the screen plate.

[0008] Further optionally, a conical dispersion plate is provided at the bottom end of the buffer distribution box, and an integral splitting block facing the outlet of the drop pipe is provided at the central upper part of the conical dispersion plate, and a layer of several buffer bodies are provided on both sides of the splitting block and placed on the upper part of the conical dispersion plate.

[0009] Further optionally, a detachable end cover is provided on the side of the buffer material distribution box, and the end cover is fixedly connected to the buffer material distribution box by bolts.

[0010] Compared with the existing technology, the beneficial effects of the utility model are as follows: the utility model arranges a buffer material distribution box and an overflow box at the lower part of the drop pipe of the fixed gangue screen, and the overflow flows onto the screen plate through secondary buffering, thereby reducing the wear of the fixed screen plate, and the screen plate replacement time is increased from 7 days to 21 days, which not only reduces the cost of frequent replacement of screen plates for enterprises, but also reduces the labor intensity of personnel replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0012] Figure 2 yes Figure 1 A cross-sectional view of the middle buffer material box;

[0013] Figure 3 This is the main view of the utility model;

[0014] Figure 4 It is a schematic diagram of the prior art of this utility;

[0015] In the figure: fixed screen 1, drop pipe 2, screen plate 3, buffer distribution box 4, overflow box 5, overflow port 6, guide inclined plate 7, overflow feed port 8, buffer body 9, conical dispersion plate 10, end cover 11, splitting block 12. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:

[0017] like Figure 1 , 3 As shown, a gangue fixed screen material distribution device comprises an inclined fixed screen 1 and a screen plate 3 arranged on the inner side thereof, a drop pipe 2 is arranged obliquely above the fixed screen 1, a buffer material distribution box 4 is connected to the lower part of the drop pipe 2, a connected overflow box 5 is arranged on one side of the buffer material distribution box 4, and the bottom of the overflow box 5 and the buffer material distribution box 4 are covered with a layer of several buffer bodies 9, and the buffer bodies 9 are made of wear-resistant steel balls.

[0018] like Figure 1 As shown, an overflow port 6 connected to the overflow box 5 is opened at the upper end of the side of the buffer distribution box 4, and a guide inclined plate 7 extending into the overflow box 5 is arranged at the lower part of one side of the overflow port 6. The guide inclined plate 7 prevents the material overflowing from the buffer distribution box 4 from falling along the side wall of the overflow box 5 and impacting the overflow feed port 8.

[0019] like Figure 1 As shown, the side of the overflow box 5 is connected and fixed to the fixed screen 1 , and an overflow feed port 8 is opened on the upper side of one side of the overflow box 5 , and the overflow feed port 8 is arranged above the screen plate 3 .

[0020] like Figure 2 As shown, a conical dispersion plate 10 is provided at the bottom end of the interior of the buffer distribution box 4, and a splitting block 12 is provided in the central upper part of the conical dispersion plate 10, which is integrated and directly faces the outlet of the drop tube 2. The splitting block 12 can disperse the vertical impact into lateral impact, thereby reducing the impact force and avoiding damage to the buffer distribution box 4. A layer of several buffer bodies 9 are provided on both sides of the splitting block 12 and placed on the upper part of the conical dispersion plate 10.

[0021] like Figure 2As shown, a detachable end cover 11 is provided on the side of the buffer distribution box 4, and an end cover 11 can also be provided on the lower side of the overflow box 5. The end cover 11 is fixedly connected to the buffer distribution box 4 by bolts. By removing the end cover 11, the worn conical dispersion plate 10 and the buffer body 9 can be regularly maintained and replaced.

[0022] The implementation principle of a gangue fixed screen cloth device in the embodiment of the present application is:

[0023] The gangue coal slurry coming out of the cyclone falls directly from the drop pipe 2 into the buffer distribution box 4 for buffering, and then overflows from the overflow port 6 into the overflow box 5, and enters the center of the overflow box 5 through the diversion effect of the guide inclined plate 7, so as to prevent the material from falling along the side wall and impacting the overflow feed port 8;

[0024] The coal slurry entering the overflow box 5 is buffered twice and overflows along the overflow feed port 8 to the sieve plate 3 of the fixed screen 1 for screening. The gangue in the slurry remains on the upper part of the sieve plate 3, while the medium coal in the slurry falls along the sieve plate 3 for diversion screening. In this way, the buffer overflow effect on both sides of the buffer distribution box 4 and the overflow box 5 can avoid the direct impact of the material on the sieve plate 3, reduce the wear of the fixed sieve plate, and increase the replacement time of the sieve plate from 7 days to 21 days, which not only reduces the cost of frequent replacement of the sieve plate for the enterprise, but also reduces the labor intensity of personnel replacement;

[0025] At the same time, a buffer body 9 is arranged at the bottom of the buffer distribution box 4 and the overflow box 5, which is equivalent to a wear-resistant layer to prevent the material from directly impacting the bottom plate of the buffer distribution box 4 and the overflow box 5, thereby extending the service life of the buffer distribution box 4 and the overflow box 5. A conical dispersion plate 10 is arranged at the bottom of the buffer distribution box 4, and the central splitting block 12 of the conical dispersion plate 10 is first impacted by the material of the drop tube 2. The splitting block 12 disperses the vertically impacted material to both sides to form a lateral impact, thereby reducing the impact of the material and making the impact of the material more uniform.

[0026] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gangue fixed screen material distribution device, comprising an inclined fixed screen (1) and a screen plate (3) arranged inside the fixed screen, a drop pipe (2) is arranged obliquely above the fixed screen (1), and is characterized in that: The lower part of the drop pipe (2) is connected to a buffer material distribution box (4), and a connected overflow box (5) is arranged on one side of the buffer material distribution box (4). The bottom of the overflow box (5) and the buffer material distribution box (4) are covered with a layer of a plurality of buffer bodies (9).

2. The gangue fixed screen cloth device according to claim 1, characterized in that: An overflow port (6) communicating with the overflow box (5) is formed at the upper end of the side of the buffer material distribution box (4), and a guide inclined plate (7) extending into the overflow box (5) is provided at the lower part of one side of the overflow port (6).

3. A gangue fixed screen cloth device according to claim 2, characterized in that: The side of the overflow box (5) is connected and fixed to the fixed screen (1), and an overflow feed port (8) is opened on the upper side of one side of the overflow box (5), and the overflow feed port (8) is arranged above the screen plate (3).

4. The gangue fixed screen cloth device according to claim 2, characterized in that: A conical dispersion plate (10) is arranged at the bottom of the buffer material distribution box (4), and a splitting block (12) is arranged in the central upper part of the conical dispersion plate (10) and is integrally arranged and directly faces the outlet of the drop pipe (2). A layer of a plurality of buffer bodies (9) are arranged on both sides of the splitting block (12) and are placed on the upper part of the conical dispersion plate (10).

5. The gangue fixed screen cloth device according to claim 4, characterized in that: A detachable end cover (11) is provided on the side of the buffer material distribution box (4), and the end cover (11) is fixedly connected to the buffer material distribution box (4) by bolts.

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