CN111779715A - Underflow pump import pipeline dross removal mechanism - Google Patents

Abstract

The invention discloses a deslagging device for an inlet pipeline of an underflow pump, which belongs to the field of liquid fluid control and is innovative in that the deslagging device comprises a cuboid deslagging box body with an opening at the top and a box body top cover which is detachably and hermetically arranged at the top of the deslagging box body, wherein one side of the deslagging box body is communicated with an inlet pipeline, and the other side of the deslagging box body is communicated with an outlet pipeline; the deslagging box body is internally provided with a grid which divides the deslagging box body into two parts, the inlet pipeline and the outlet pipeline are respectively positioned at two sides of the grid, the upper end of the grid is higher than the outlet pipeline, and the lower end of the grid is lower than the inlet pipeline. The invention mainly aims at the problem that sundries are easy to enter the open-air chute in the prior art to influence the conveying of the underflow pump, and by applying the invention, the service life of the pump can be effectively prolonged, the poor ore feeding effect of the pump is avoided, the labor intensity of workers is reduced, and the smooth production is stabilized.

Description

Underflow pump import pipeline dross removal mechanism

Technical Field

The invention belongs to the field of liquid fluid control, relates to a pipeline deslagging device, and particularly relates to an inlet pipeline deslagging device of an underflow pump.

Background

Most of ore pulp in a dressing plant is conveyed by using a pipeline and a pump, and the tailings are conveyed as the last process of the dressing plant, so that the stable operation is also very important. Generally, the equipment for conveying the tailings mainly adopts an open-air chute, a thickener, a pipeline, an underflow pump and the like, and finally conveys the tailings to a tailings pond. In the normal production process, impurities (such as cement blocks, cast stones, bricks, stones, branches, glass bottles, household garbage and the like) are easy to enter the open-air chute, and the large impurities finally enter the underflow pump, so that the normal conveying of tailings is influenced. After impurities in the ore pulp enter the underflow pump, the impeller of the pump is blocked on the light side, so that the ore feeding effect of the pump is poor, and the service life of the pump is influenced; the heavy side causes the pump body to be blocked, the pump body needs to be replaced, the treatment time is long, the labor intensity is high, and the production requirement is seriously influenced. Therefore, an intercepting device needs to be additionally arranged on a pipeline at the inlet of the underflow pump, large sundries falling into the chute are prevented from entering the pump body, and orderly production is guaranteed.

Disclosure of Invention

Aiming at the problem that sundries are easy to enter an open chute in the prior art to influence the conveying of an underflow pump, the invention provides the deslagging device for the inlet pipeline of the underflow pump, which can effectively prolong the service life of the pump, prevent the poor ore feeding effect of the pump, reduce the labor intensity of workers and stabilize the smooth production.

The technical scheme for solving the technical problem of the invention is as follows:

the invention relates to a deslagging device for an inlet pipeline of an underflow pump, which is innovative in that the deslagging device comprises a deslagging box body which is cuboid and is provided with an opening at the top and a box top cover which is detachably and hermetically arranged at the top of the deslagging box body, wherein one side of the deslagging box body is communicated with the inlet pipeline, and the other side of the deslagging box body is communicated with the outlet pipeline; the deslagging box body is internally provided with a grid which divides the deslagging box body into two parts, the inlet pipeline and the outlet pipeline are respectively positioned at two sides of the grid, the upper end of the grid is higher than the outlet pipeline, and the lower end of the grid is lower than the inlet pipeline.

As a further improvement of the technical scheme of the invention, the grid comprises cross bars at two ends, the cross bar at the upper end is welded and fixed with the top of the side wall of the deslagging box body, the cross bar at the lower end is welded and fixed with the bottom wall of the deslagging box body, a plurality of grid units are uniformly arranged between the two cross bars in parallel, and the distance between the adjacent grid units is 40-50 mm.

As a further improvement of the technical scheme of the invention, the grate bars are inclined at an angle of 45-60 degrees.

As a further improvement of the technical scheme of the invention, the bottom of the side wall of the deslagging box body close to one side of the inlet pipeline is communicated with a sewage discharge pipeline, and a sewage discharge valve is arranged on the sewage discharge pipeline.

As a further improvement of the technical scheme of the invention, the sewage discharge pipeline is a short pipe with the diameter of 50mm, the sewage discharge valve is a valve with the diameter of 50mm, and the inlet pipeline and the outlet pipeline are straight pipes with the diameter of 250 mm.

As a further improvement of the technical scheme of the invention, a plurality of screw holes are formed in the periphery of the top cover of the box body, skirt edges extend outwards in parallel from the periphery of the top of the deslagging box body, through holes which correspond to the screw holes in the top cover of the box body one to one are formed in the skirt edges, and the through holes and the screw holes are fixedly connected through bolts matched with sealing rings.

When the inlet pipeline deslagging device of the underflow pump is applied, the device is arranged on a pipeline in front of the underflow pump, ore pulp enters a deslagging box body from the inlet pipeline, the flow passes through gaps of the grate bars, large impurities mixed in the ore pulp are remained on the grate bars, and the ore pulp finally enters the underflow pump from an outlet pipeline and is finally conveyed to a tailing pond. When the output current of the underflow pump is reduced to some extent, indicating that impurities on the grate bar are accumulated to a certain amount, pausing the underflow pump, opening the blowdown valve, and discharging the impurities through the blowdown pipeline; if large sundries can not be discharged through the sewage discharge pipeline, bolts of the screw holes at the periphery of the top cover of the box body need to be unscrewed, the top cover of the box body needs to be opened, and the large sundries trapped on the grate bars are manually removed.

Compared with the prior art, the inlet pipeline deslagging device of the underflow pump is simple in structure, convenient to maintain and high in universality, can be used after being connected into a pipeline, completely intercepts large sundries mixed into the pipeline, and completely avoids influence on production caused by the fact that the large sundries are pumped into the pipeline by the underflow pump; meanwhile, whether the slag removal box body needs to be cleaned or not can be judged by observing the current level of the underflow pump, the current level indicates that more blocked objects are in the grate bar, the pump can be stopped to clean the slag removal box, and if the slag removal box is small, only the blow-down valve needs to be opened; if bold debris, then need open the top cap at slagging-off case top and clear up, easy operation, debris are easy to be cleared up, greatly reduced workman's intensity of labour, also prolonged the life of pump simultaneously, reduction in production cost.

Drawings

The invention is further described with reference to the following figures and detailed description:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

in the figure: 1. the device comprises an inlet pipeline, a deslagging box body, a 3 blowdown pipeline, a 4 blowdown valve, a 5 box body top cover, a 6 outlet pipeline, a 7 screw hole, 8 grate bars, 9 cross bars, 10 grate bar units.

Detailed Description

As shown in fig. 1 and 2, the deslagging device for the inlet pipeline of the underflow pump is characterized by comprising a deslagging box body 2 which is cuboid and has an open top, and a box top cover 5 which is detachably and hermetically arranged at the top of the deslagging box body 2; the size of the deslagging box body 2 is 600mm x 400mm, round holes with the diameter of 250mm are respectively arranged on the side walls of the two sides of the deslagging box body, and an inlet pipeline 1 and an outlet pipeline 6 are respectively communicated and welded; the deslagging box body 2 is internally provided with a grid section 8 which divides the deslagging box body into two parts, the inlet pipeline 1 and the outlet pipeline 6 are respectively positioned at two sides of the grid section 8, the upper end of the grid section 8 is higher than the outlet pipeline 6, and the lower end of the grid section 8 is lower than the inlet pipeline 1, so that sundries entering the deslagging box body 2 can be blocked by the grid section 8.

Furthermore, the width of the grid 8 is set to be 400mm, the grid is as wide as the deslagging box body 2, the grid comprises cross bars 9 at two ends, the cross bar 9 at the upper end of the grid is welded and fixed with the top of the side wall of the deslagging box body 2, the cross bar 9 at the lower end of the grid is welded and fixed with the bottom wall of the deslagging box body 2, a plurality of grid units 10 are uniformly arranged between the two cross bars 9 in parallel, and the distance between every two adjacent grid units 10 is 40-50 mm. The arrangement can ensure normal flowing of the ore pulp, and can intercept large impurities in the ore pulp to ensure normal operation of the underflow pump.

Furthermore, in the embodiment, the grate bars 8 are inclined at an angle of 45-60 degrees, and the inclined direction is the same as the flow direction of the ore pulp, so that large impurities in the ore pulp are more effectively intercepted.

In this embodiment, for clearing up 8 intercepts debris more conveniently, the lateral wall bottom intercommunication that is close to inlet tube 1 one side on the slagging-off box 2 is provided with sewage pipes 3, is provided with blowdown valve 4 on this sewage pipes 3, when needs carry out debris clearance, closes the underflow pump, open blowdown valve 3 can.

Further, in this embodiment, the sewage pipeline 3 is a short pipe with a diameter of 50mm, the sewage valve 4 is a valve with a diameter of 50mm, and the inlet pipeline 1 and the outlet pipeline 6 are straight pipes with a diameter of 250 mm.

In order to facilitate cleaning of sundries passing through the sewage pipeline 4, in the embodiment, the size of the box top cover 5 is 700mm x 500mm, a plurality of screw holes 7 are formed in the periphery of the box top cover, skirt edges of 50mm extend outwards in parallel and respectively extend around the top of the deslagging box body 2, through holes corresponding to the screw holes 7 in the box top cover 5 one by one are formed in the skirt edges, and the through holes and the screw holes 7 are fixedly connected through bolts and rubber sealing rings in a matching mode. Furthermore, the diameter of the screw hole is 30mm, the pitch between adjacent screw holes is 200mm, and the distance between the screw hole at the outermost edge and the edge is 150 mm.

When the slag removing device is used, ore pulp enters the slag removing box body 2 from the inlet pipeline 1, flows through the gaps of the grate bars 8, large impurities mixed in the ore pulp are left on the grate bars 8, and finally the ore pulp enters the slag pulp pump from the outlet pipeline 6 and is finally conveyed to a tailing pond. When the output current of the pump is reduced to some extent, the sundries on the grate bars 8 are accumulated to a certain amount, the pump can be stopped at the moment, the sewage discharge valve 4 is opened, and the sundries can be discharged through the sewage discharge pipeline; if large sundries cannot be discharged through the sewage discharge pipeline, the bolts of the screw holes 7 on the periphery of the box body top cover 5 need to be unscrewed, the box body top cover 5 is opened, and the large sundries trapped on the grate bars 8 are manually removed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims (6)

1. An inlet pipeline deslagging device of an underflow pump is characterized by comprising a deslagging box body (2) which is cuboid and is provided with an opening at the top and a box top cover (5) which is detachably and hermetically arranged at the top of the deslagging box body (2), wherein one side of the deslagging box body (2) is communicated with an inlet pipeline (1), and the other side of the deslagging box body is communicated with an outlet pipeline (6); the slag removal box body (2) is internally provided with a grid section (8) which divides the slag removal box body into two parts, the inlet pipeline (1) and the outlet pipeline (6) are respectively positioned at two sides of the grid section (8), the upper end of the grid section (8) is higher than the outlet pipeline (6), and the lower end of the grid section (8) is lower than the inlet pipeline (1).

2. The inlet pipeline deslagging device of the underflow pump according to claim 1, wherein the grid section (8) comprises cross bars (9) at two ends, the cross bar (9) at the upper end is welded and fixed with the top of the side wall of the deslagging box body (2), the cross bar (9) at the lower end is welded and fixed with the bottom wall of the deslagging box body (2), a plurality of grid section units (10) are uniformly arranged between the two cross bars (9) in parallel, and the distance between the adjacent grid section units (10) is 40-50 mm.

3. The inlet pipeline deslagging device of the underflow pump according to claim 1 or 2, wherein the grate bars (8) are inclined at 45-60 degrees.

4. The inlet pipeline deslagging device of the underflow pump according to claim 1, wherein a blowdown pipeline (3) is communicated with the bottom of the side wall of the deslagging box body (2) close to one side of the inlet pipeline (1), and a blowdown valve (4) is arranged on the blowdown pipeline (3).

5. The inlet pipeline deslagging device of the underflow pump according to claim 4, wherein the blowdown pipeline (3) is a short pipe with a diameter of 50mm, the blowdown valve (4) is a valve with a diameter of 50mm, and the inlet pipeline (1) and the outlet pipeline (6) are straight pipes with a diameter of 250 mm.

6. The deslagging device of the inlet pipeline of the underflow pump according to claim 1, wherein a plurality of screw holes (7) are formed around the top cover (5) of the tank body, skirt rims are respectively extended outwards and parallelly on the periphery of the top of the deslagging tank body (2), through holes corresponding to the screw holes (7) on the top cover (5) of the tank body are formed in the skirt rims in a one-to-one mode, and the through holes and the screw holes (7) are connected and fixed through bolts matched with sealing rings.

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