Non-blind area permeable screen

Abstract

The utility model relates to the technical field of mining equipment, in particular to a non-blind area permeable screen used in a filtering section on a sedimentation filtering type centrifugal machine, which consists of a plurality of screen blocks provided with screen seams, and is characterized by further comprising a support, the support is arranged in the middle of the screen mesh seam; and the screen mesh seams positioned at the lower part of the screen mesh block are communicated with the screen mesh block. The structural design is reasonable and simple, the stability of the whole screen is improved, the damage to the screen is reduced, and the water permeability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, and particularly relates to a blind - area - free water - permeable screen used in the upper filtering section of a subsidence and filtration centrifuge. Background Art

[0002] A subsidence and filtration centrifuge is a continuous operation equipment that separates solid - liquid mixtures of materials by the mechanisms of "centrifugal subsidence" and "centrifugal filtration". The working principle is as follows: The motor drives the drum to rotate through a V - belt. The drum drives the differential, and the output shaft of the differential drives the screw to rotate. The screw rotates in the same direction as the drum, but at a different speed, that is, there is a speed difference. The coal slime water enters the inner cavity of the drum through the feed pipe. Under the action of centrifugal force hundreds of times greater than gravity, an annular subsidence area is formed. Solid particles quickly settle on the inner wall of the drum, and water carrying fine particles is discharged from the overflow port of the drum through the screw channel, which is the centrifugal liquid. By virtue of the speed difference between the screw and the drum, the particles settled on the inner wall of the drum are conveyed by the screw to the filtering section of the drum, and water and a small amount of coal slime are discharged through the gaps of the screen, which is the filtrate. After the material is dehydrated again through the filtering section, it is discharged from the discharge port of the drum, which is the dehydrated product.

[0003] The existing screen blocks in the filtering section are provided with screen slots. There are gap blind areas at both ends of the screen blocks, and the water - permeable effect is not very ideal. Moreover, the existing screen blocks are relatively thin, with a thickness of 6 mm for ordinary screen blocks. There is no support in the middle part of the screen slots, and the screen slots are easily damaged during use. There is a need for a screen block with a more stable structure, an increased water - permeability rate during use, which can effectively reduce the external water content of the dehydrated product and improve production efficiency. Summary of the Utility Model

[0004] In order to solve the problems that the existing screen blocks are relatively thin, the screen slots are long and unsupported, the screen slots are easily damaged during use, and there are blind areas in the screen blocks, resulting in an unsatisfactory dehydration effect, a blind - area - free water - permeable screen is proposed.

[0005] To solve the above problems, the following solution is proposed: A blind - area - free water - permeable screen is composed of multiple screen blocks. Screen slots are provided on the screen blocks, and the blind - area - free water - permeable screen further includes a support.

[0006] The support is arranged at the middle position of the screen slot.

[0007] The screen slots located at the lower part of the screen block are in through - connection with the screen block.

[0008] Preferably, multiple parallel screen slots are provided on the screen block.

[0009] Preferably, the thickness of the screen block is 10 mm - 15 mm.

[0010] Preferably, the screen slots include intermittent slots and continuous slots; the intermittent slots are located at the upper part of the screen block; the continuous slots are located at the lower part of the screen block.

[0011] Preferably, both ends at the lower part of the continuous slots penetrate through the screen block.

[0012] Preferably, the lower part of the support is wedge-shaped.

[0013] Preferably, the support is arranged at the upper middle part of the screen block, and its upper end face is flush with the upper surface of the screen block.

[0014] Advantages of the present utility model:

[0015] The thickness of the screen block is increased, so that the stability of the screen block is improved and the damage of the screen block is reduced. Moreover, a support is arranged in the middle part of the screen slots, thus ensuring the stability of the structure of the screen block. The lower part of the screen slots is changed to continuous slots that are fully continuous, so that the water permeability of the screen block is increased during use, and the blind areas existing in the original screen block are also solved. This structural design is reasonable and simple, increases the overall stability of the screen, reduces the damage of the screen, and improves the water permeability of the screen. Description of the drawings

[0016] Figure 1 is a schematic side structure view of the present utility model;

[0017] Figure 2 is a top view of the present utility model;

[0018] Figure 3 is Figure 1 a schematic structure view in the direction of A in

[0019] Figure 4 is Figure 1 a schematic cross-sectional view taken along line B-B in

[0020] Figure 5 is Figure 2 a schematic cross-sectional view taken along line C-C in

[0021] In the figure: screen block 1, screen slot 2, intermittent slot 2-1, continuous slot 2-2, support 3. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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 shall fall within the protection scope of the present utility model.

[0023] Such as Figures 1-5As shown in the figure, to solve the above problems, the following solution is proposed: a blind - free permeable screen, which is composed of multiple screen blocks 1. Screen slits 2 are arranged on the screen block 1. The blind - free permeable screen further includes a support 3; the support 3 is arranged at the middle position of the screen slit 2; the screen slit 2 located at the lower part of the screen block 1 penetrates through the screen block 1. Multiple parallel screen slits 2 are arranged on the screen block 1. The thickness of the screen block 1 is 10 mm - 15 mm. Preferably, the thickness of the screen block 1 in this embodiment is 11 mm. The screen slit 2 includes an intermittent slit 2 - 1 and a continuous slit 2 - 2; the intermittent slit 2 - 1 is located at the upper part of the screen block 1, and the upper and lower parts of the transverse section of the intermittent slit 2 - 1 have the same width; the continuous slit 2 - 2 is located at the lower part of the screen block 1, and the transverse section of the continuous slit 2 - 2 is a funnel - shaped with the upper part larger than the lower part. Both ends of the lower part of the continuous slit 2 - 2 penetrate through the screen block 1. The lower part of the support 3 is wedge - shaped. The support 3 is arranged at the upper - middle part of the screen block 1, and its upper end face is flush with the upper surface of the screen block 1.

[0024] The fully permeable screen in the present utility model is a filtering component used in the filtering section of a sedimentation - filtration centrifuge. When in use, multiple groups of screen blocks 1 are arranged and connected for filtering and dewatering materials in the filtering section.

[0025] The present utility model aims to improve the dewatering efficiency, and thus improves the structure of the screen block 1 in the filtering part. Firstly, the thickness of the screen block 1 is increased, which improves the stability of the screen block 1 and reduces the damage of the screen block 1. And a support 3 is arranged in the middle part of the screen slit 2, which ensures the stability of the screen block structure. Secondly, the continuous slit 2 - 2 at the lower part of the screen slit 2 penetrates through the screen block 1. The continuous slit 2 - 2 is a fully continuous structure, which increases the water permeability of the screen block 1 when in use. And both ends of the continuous slit 2 - 2 penetrate through the screen block 1, thus solving the problem of blind areas existing in the existing screen block 1. This structural design is reasonable and simple, increases the overall stability of the screen, reduces the damage of the screen, and improves the water permeability of the screen.

[0026] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A blind - spot - free permeable sieve mesh, which is composed of multiple sieve mesh blocks, and sieve slots are arranged on the sieve mesh blocks, characterized in that, The blind - area - free permeable sieve mesh further includes a support; The support is arranged at the middle position of the sieve mesh seams; The sieve mesh seams located at the lower part of the sieve mesh block are communicated with the sieve mesh block.

2. The blind - area - free permeable screen according to claim 1, characterized in that, Multiple parallel sieve mesh seams are arranged on the sieve mesh block.

3. The blind - area - free permeable screen according to claim 1, characterized in that, The thickness of the sieve mesh block is 10 mm - 15 mm.

4. The blind area-free permeable screen according to claim 1, wherein The sieve mesh seams include intermittent seams and continuous seams; The intermittent seams are located at the upper part of the sieve mesh block; The continuous seams are located at the lower part of the sieve mesh block.

5. The blind-zone-free permeable screen according to claim 4, characterized in that, Both ends of the lower part of the continuous seams are communicated with the sieve mesh block.

6. The blind - area - free permeable screen according to claim 1, wherein The lower part of the support is wedge - shaped.

7. The blind area-free permeable screen according to claim 1, wherein The support is arranged at the upper - middle part of the sieve mesh block, and its upper end face is flush with the upper surface of the sieve mesh block.

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