Washing water device for magnetic separation drum of wet magnetic separator

Abstract

The utility model discloses a washing water device for a magnetic separation drum of a wet magnetic separator, which is provided with a water spraying tank, a half-opening-covering plate is arranged on the top surface of the water spraying tank, a gap is reserved between one side of the half-opening-covering plate and the edge of one side of an upper end opening of the water spraying tank to form a water spraying opening, and a water spraying inclined plate is arranged at the edge of the outer side of the water spraying opening. The water spraying inclined plate is arranged along the length direction of the water spraying tank, and the water spraying inclined plate is obliquely downwards arranged towards the magnetic separation roller; a water inlet pipe and an overflow water pipe are arranged at the two ends of the water spraying tank respectively, the water inlet pipe is located on one side of the bottom of the water spraying tank, the height of the overflow water pipe is flush with the height of the water spraying opening, and a control valve and a water pressure sensor are arranged on the water inlet pipe; the washing effect of the magnetic separator is remarkably improved, the coverage rate of minerals on the surface of the roller of the magnetic separator is reduced from 90% to below 10%, and the blocking probability is reduced to zero.

Description

TECHNICAL FIELD

[0001] The utility model relates to dressing equipment technical field especially a kind of wet magnetic separator magnetic selection cylinder washing water device. BACKGROUND

[0002] In the dressing production process, wet magnetic separator is the key equipment for separating magnetic minerals, and its washing water device undertakes the important task of removing impurities on the surface of magnetic separator and in the separation gap to ensure effective separation of magnetic minerals. The existing washing water device uses a φ50mm stainless steel water pipe with a length of 3.5m, a φ10mm hole and a hole distance of 30mm. The water supply system is supplied by a ring water pump.

[0003] When facing poor ring water quality, the existing washing device exposes many problems.

[0004] Currently, many magnetite beneficiation uses semi-overflow type magnetic separators, with more than 20 units, poor ring water quality, containing suspended solids, gunpowder, leaves, coarse particle waste rock, waste cloth and other impurities, which are prone to block the holes. The specific shortcomings are as follows:

[0005] 1. Frequent blockage of washing water pipe holes: once the holes are blocked, the washing water cannot be normally sprayed, making it difficult to remove impurities on the surface of the magnetic separator and in the separation gap, seriously affecting the recovery rate of magnetic minerals and the quality of concentrate.

[0006] 2. Serious pipe wear: due to the high hardness of impurities in the ring water, the water flow produces a strong scouring effect on the inner wall of the washing water pipe, accelerating the wear of the pipe. Pipe wear not only shortens the service life of the pipe and increases the cost of replacing the pipe, but also may cause pipe leakage, affecting the continuity of production.

[0007] 3. Sharp decline in washing effect: the combined effect of hole blockage and pipe wear makes it impossible for the washing water to uniformly and comprehensively cover the surface of the magnetic separator and the separation gap, greatly reducing the washing effect. This not only leads to an increase in impurities, but also may cause incomplete separation of magnetic minerals and non-magnetic minerals, affecting the recovery rate of magnetic minerals and the quality of concentrate.

[0008] 4. Increased maintenance workload: frequent nozzle blockage and pipe wear require equipment maintenance personnel to spend a lot of time and effort on cleaning and repair work. This not only increases maintenance costs, but also may affect production progress and reduce production efficiency due to delayed maintenance. INVENTION CONTENTS

[0009] The utility model aims at the above situation, and provides a wet magnetic separator magnetic selection cylinder washing water device, which adopts a newly designed washing water structure to solve the above problems.

[0010] The utility model discloses a specific scheme is: a wet type magnetic separator magnetic separation cylinder washing water device has the water spray groove, the top surface of water spray groove is provided with a half shade board, and the one side of half shade board is kept apart from the upper end one side edge of water spray groove and forms the water spray opening, is equipped with the water spray inclined plate at the outside edge of water spray opening, and the water spray inclined plate is arranged along the length direction of water spray groove, and the water spray inclined plate is set down to magnetic separation cylinder, the both ends of water spray groove are provided with water inlet pipe and overflow pipe respectively, and wherein the water inlet pipe is located the bottom one side of water spray groove, and the height of overflow pipe is flush with the height of water spray opening, and is equipped with control valve and water pressure sensor on water inlet pipe.

[0011] Further, the bottom of the half shade board is provided with a water baffle downward, which is arranged on the one side edge of the half shade board close to the water spray opening.

[0012] Further, the junction of the water spray opening and the water spray inclined plate is also provided with a sundry isolation filter screen, which is used for blocking impurities in the washing water.

[0013] Further, the water spray inclined plate is arranged at a 45° inclination angle with the front side wall of the water spray groove, and the left and right ends of the water spray inclined plate are provided with water baffle plates.

[0014] Further, the water spray groove is a rectangular box-shaped structure formed by welding five steel plates of front, back, left, right and bottom, and the pipe opening of the water inlet pipe is arranged on the left steel plate close to the back side.

[0015] Further, the height of the water spray opening is lower than the height of the half shade board.

[0016] The implementation of the utility model brings the following beneficial effects:

[0017] 1. The washing effect is significantly improved: the mineral coverage rate of the magnetic separator drum surface is reduced from 90% to below 10%.

[0018] 2. The blocking probability is reduced to zero.

[0019] 3. The maintenance frequency is reduced from 3 times per shift to 1 time per week to regularly clean the sundries in the water spray groove, effectively improving the production efficiency and reducing the production loss caused by equipment maintenance.

[0020] 4. Through the external intelligent water pressure control system, the water resource waste phenomenon is effectively curbed, and the production cost is reduced.

[0021] 5. The iron grade of self-produced mine magnetic separation tailings is reduced to below 8%, and the iron metal recovery rate is increased by 0.6 percentage points. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the front view direction structure schematic diagram of the utility model;

[0023] Figure 2 is the side view direction structure schematic diagram of the utility model;

[0024] Figure 3 is Figure 1 the A-A direction structure schematic diagram in the middle;

[0025] Figure 4 is the isometric direction structure schematic diagram of the utility model;

[0026] Figure 5 is the use state schematic diagram of the utility model;

[0027] Figure 6 is the existing water washing pipeline structure schematic diagram.

[0028] In the drawing: 1-control valve, 2-water inlet pipe, 3-water pressure sensor, 4-water spraying groove, 5-rubbish isolation filter screen, 6-overflow water pipe, 7-half shutter, 8-water retaining wall plate, 9-water retaining plate, 10-water spraying opening, 11-water spraying inclined plate, 12-magnetic separation roller, 13-flushing water pipe hole, 14-flushing water pipe. DETAILED DESCRIPTION

[0029] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model. In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product of the utility model is usually placed, which is only for the convenience of describing the utility model or simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0030] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrange", "install", "connect" should be understood broadly, for example, can be fixedly connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] Referring to Figures 1-4 The utility model relates to a wet type magnetic separator magnetic separation cylinder washing water device, with water spraying groove 4, the top surface of water spraying groove is provided with a half sheltered mouth plate 7, and one side of half sheltered mouth plate is kept apart from the upper end port one side edge of water spraying groove and forms water spraying port 10, and the outer side edge of water spraying port is equipped with water spraying inclined plate 11, and the water spraying inclined plate is arranged along the length direction of water spraying groove, and the water spraying inclined plate is arranged to be inclined downward to magnetic separation cylinder 12, water spraying groove is equipped with water inlet pipe 2 and overflow pipe 6 respectively at both ends, wherein the water inlet pipe is located at the bottom side of water spraying groove, the height of overflow pipe is flush with the height of water spraying port, and the water inlet pipe is equipped with control valve 1 and water pressure sensor 3. Further, the bottom of half sheltered mouth plate is provided with a water baffle 9 downward, and the water baffle is arranged at the side edge of half sheltered mouth plate close to water spraying port. Further, the water spraying port and the junction of water spraying inclined plate are also provided with sundry isolation filter screen 5, and the sundry isolation filter screen is used for blocking the sundry in washing water. Further, the water spraying inclined plate and the front side wall of water spraying groove are provided with 45 degrees inclined angle, and the left and right ends of water spraying inclined plate are provided with water baffle wall 8. Further, the height of water spraying port is lower than the height of half sheltered mouth plate.

[0032] Further, the water spraying groove in the embodiment is the cuboid box structure formed by the welding of five steel plates of front, back, left, right and bottom, and the pipe opening of water inlet pipe is arranged on the left side steel plate and close to the back side.

[0033] Referring to Figure 5 The utility model adopts cross section full area water flow washing, that is, water spraying inclined plate washing, and water is discharged on the whole water spraying inclined plate at the same time, which can form continuous and uniform water curtain on the surface of the magnetic separation cylinder of the magnetic separator, ensures that the whole cross section of the magnetic separator can be fully washed by water flow, greatly improves the comprehensiveness and effectiveness of washing, effectively reduces sundry residue, and guarantees the efficient separation of magnetic minerals. From the angle of coping with poor water quality, referring to Figure 6, the original flushing water pipe hole 13 injection, smaller hole is easy to be blocked by suspended solids, particulate matter and other impurities in the ring water, once blocked, not only the flushing effect is greatly discounted, also need to be cleaned frequently, seriously affect the production efficiency. Change to the horizontal section of the water tank full area flow flushing, the water flow channel is more wide, greatly reduces the risk of impurities blocking, even in the case of poor water quality, can maintain stable flushing performance, to ensure the continuity of production. Key technical points are: considering that the water pressure is larger, a large amount of water will flow along the water flow end instant overflow, the flushing effect is reduced, need to increase the flow plate in the water tank, that is, the water baffle 9 is used for flow stabilization, and overflow is carried out through the overflow pipe on the side, so as to ensure that the flushing water in the water tank does not directly flow out from the water outlet; The water tank needs to have a certain depth, which can accumulate impurities and sludge in the ring water; The φ50mm slag gate can be arranged on the side of the water tank, and the impurities at the bottom of the water tank can be cleaned regularly; The water tank inclined plate is arranged at an angle of 45°-50° with the horizontal cross section of the magnetic separation drum of the magnetic separator, and the gap between the water tank inclined plate and the magnetic separation drum is controlled within 1-2mm, and the water flow line is arranged at a position higher than the center line of the magnetic separator by about 5mm, so as to ensure that the surface of the magnetic separation drum is washed thoroughly; The whole flushing device is made of corrosion-resistant and wear-resistant stainless steel material, which improves the service life of the whole device.

[0034] The utility model discloses a rubbish isolation filter screen 5 is also arranged on the water outlet, so that the impurities in the flushing water are also filtered and intercepted, further guaranteeing the relative cleanness of the flushing water.

[0035] The flushing effect is improved significantly: the mineral coverage rate on the surface of the magnetic separator drum is reduced from 90% to below 10%. The blocking probability is reduced to zero. The maintenance frequency is reduced from 3 times per shift to 1 time per week to clean the impurities in the water tank, effectively improving the production efficiency and reducing the loss caused by equipment maintenance. Through the external intelligent water pressure control system, the waste of water resources is effectively curbed, and the production cost is reduced. The iron grade of the self-produced mine magnetic separation tailings is reduced to below 8%, and the iron metal recovery rate is increased by 0.6%.

Claims

1. A wet magnetic separator magnetic separation drum rinsing water device, characterized by: The water shower tank is provided with a half-shading apron on the top surface, and one side of the half-shading apron is spaced from the side edge of the upper end of the water shower tank to form a water showering port, and the outer side edge of the water showering port is provided with a water showering slope plate arranged along the length direction of the water shower tank, and the water showering slope plate is inclined downward to the magnetic separation drum.

2. The washing device of the magnetic separation drum of a wet magnetic separator according to claim 1, characterized in that: The bottom of the half-shading apron is provided with a water baffle downward, and the water baffle is arranged on the half-shading apron and close to the side edge of the water showering port.

3. The washing device of the magnetic separation drum of a wet magnetic separator according to claim 1, characterized in that: The junction of the water showering port and the water showering slope plate is further provided with a sundry isolation filter screen for blocking sundries in the washing water.

4. The washing device of the magnetic separation drum of a wet magnetic separator according to claim 1, characterized in that: The water showering slope plate is arranged at an inclination angle of 45° with the front side wall surface of the water shower tank, and the left and right ends of the water showering slope plate are provided with water baffle plates.

5. The washing water device for magnetic separation drum of wet magnetic separator according to claim 1, characterized in that: The water shower tank is a cuboid box structure formed by assembling and welding five steel plates of front, back, left, right and bottom, and the pipe opening of the water inlet pipe is arranged on the left steel plate and close to the back side.

6. The washing water device for a magnetic separation drum of a wet magnetic separator according to claim 1, characterized in that: The height of the water showering port is lower than the height of the half-shading apron.

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