Dry magnetic separator

Abstract

The utility model relates to a dry magnetic separator which comprises a fixed rack, a shell arranged on the fixed rack, a feed port arranged at the top end of the shell, a concentrate outlet and a tailing outlet respectively arranged at two sides of the bottom end of the shell, a rotating drum arranged in the shell, two ends of the rotating drum rotatably connected with the shell, and a support shaft arranged at the center of the rotating drum, the supporting shaft is rotationally connected with the rotary drum, the two ends of the supporting shaft outwards penetrate out of the rotary drum and the shell and are connected with the fixed rack, a driving mechanism is installed at one end of the rotary drum and drives the rotary drum to rotate with the supporting shaft as the axis, a supporting frame is installed on the portion, located in the rotary drum, of the supporting shaft, and a permanent magnet is installed on the supporting frame. The permanent magnets are uniformly arranged in a half circle by taking the rotating shaft as an axis, the permanent magnets are positioned on one side of the tailing outlet, and a certain distance is formed between the outer ring of each permanent magnet and the rotating drum; according to the utility model, the ore removal rate is improved, and cold air is continuously introduced to cool the rotary drum during operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of magnetic separator, concretely relates to a dry type magnetic separator. BACKGROUND

[0002] The dry type magnetic separator is a kind of ore dressing equipment, mainly used for the magnetite, magnetic pyrite with particle size below 3mm, the existing magnetic separator generally includes rotary drum and permanent magnet, permanent magnet is arranged in rotary drum, and ore is evenly scattered to rotary drum and rotates with rotary drum, concentrates are adsorbed on rotary drum when passing through permanent magnet, at this time, tailings are thrown down by rotary drum, and concentrates fall down when rotary drum continues to rotate and lose the suction of permanent magnet, so as to separate concentrates from tailings;The existing dry type magnetic separator has the following problems in actual use: 1, long-term friction between ore and rotary drum generates heat, which can affect the connecting bearing and other moving parts;2, ore is quickly hit on rotary drum and can rebound, so that permanent magnet cannot adsorb concentrates in the first time;3, some materials contain certain moisture, which can be easily stuck on rotary drum and is not easy to fall, affecting the ore output efficiency. SUMMARY

[0003] The utility model aims at solving the problems in prior art, and provides a dry type magnetic separator.

[0004] The specific scheme of the utility model is as follows: a dry type magnetic separator, including fixed rack, the fixed rack is equipped with shell, the top of shell is equipped with feeding port, and the bottom of shell is equipped with concentrate outlet and tailings outlet respectively, the shell is equipped with a rotary drum, and the two ends of rotary drum are rotatably connected with shell, a support shaft is arranged at the center of rotary drum, the support shaft is rotatably connected with rotary drum, the two ends of support shaft are outwardly penetrated through rotary drum and shell and connected with fixed rack, one end of rotary drum is equipped with driving mechanism, driving mechanism drives rotary drum to rotate with support shaft as the axis, the part of support shaft in rotary drum is equipped with support frame, permanent magnet is arranged on support frame, permanent magnet is uniformly arranged half a circle with rotary shaft as the axis, permanent magnet is arranged on one side of tailings outlet, and a certain space is arranged between the outer ring of permanent magnet and rotary drum.

[0005] Further, the shell is equipped with air knife, air knife is arranged above concentrate outlet, the air port of air knife is downwardly aligned with rotary drum, and the outer end of air knife is connected to fan.

[0006] Further, the support shaft is hollow structure, one end of support shaft is connected to fan, and a plurality of air holes are arranged along the radial direction on the part of support shaft in rotary drum.

[0007] Further, two-stage material guiding inclined plate is arranged at feeding port, the inclined directions of two-stage material guiding inclined plate are opposite, and one material guiding inclined plate is arranged above the other.

[0008] Further, the driving mechanism comprises a motor, a driving wheel, a driven wheel, the motor is connected with the fixed frame, the output end of the motor is provided with the driving wheel, the driven wheel is fixedly connected with the rotating drum, a bearing is arranged between the driven wheel and the supporting shaft, and a transmission chain is arranged between the driving wheel and the driven wheel.

[0009] The utility model discloses have the following beneficial effects: 1, the center support shaft is set to hollow structure and is set to the vent hole, and the outside cold air is passed in to carry out the cooling heat dissipation to the rotating drum, avoids the influence to the moving part, 2, sets up the guide chute buffer mineral aggregate, and the mineral aggregate is more evenly scattered on the rotating drum, 3, sets up the air knife and blows away the concentrate sticking on the rotating drum, and the out of mine efficiency is promoted. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the perspective view of the utility model;

[0011] Figure 2 It is the front view of the utility model;

[0012] Figure 3 It is Figure 2 A-A view of;

[0013] Figure 4 It is Figure 3 B-B view of;

[0014] In the drawing: 1, fixed frame;2, shell;21, concentrate outlet;22, tailings outlet;3, guide chute;4, driving mechanism;5, air knife;6, fan;7, permanent magnet;8, support frame;9, supporting shaft. DETAILED DESCRIPTION

[0015] Referring to Figures 1-4 , the embodiment is a dry-type magnetic separator, which comprises a fixed frame 1, the fixed frame 1 is provided with a shell 2, the shell 2 is provided with a feeding port at the top end, the bottom end of the shell 2 is provided with a concentrate outlet 21 and a tailings outlet 22 at the two sides respectively, and the shell 2 is provided with a rotating drum, the two ends of the rotating drum are rotatably connected with the shell 2, the center of the rotating drum is provided with a supporting shaft 9, the supporting shaft 9 is rotatably connected with the rotating drum, the two ends of the supporting shaft 9 are outwardly penetrated through the rotating drum and the shell 2 and connected with the fixed frame 1, one end of the rotating drum is provided with a driving mechanism 4, the driving mechanism 4 drives the rotating drum to rotate around the supporting shaft 9 as the axis, the part of the supporting shaft 9 located in the rotating drum is provided with a support frame 8, the support frame 8 is provided with permanent magnets 7, the permanent magnets 7 are uniformly arranged in a half circle around the rotating shaft, the permanent magnets are located at one side of the tailings outlet 22, and the outer circle of the permanent magnets 7 is provided with a certain spacing from the rotating drum.

[0016] Further, the shell 2 is provided with an air knife 5, the air knife 5 is arranged above the concentrate outlet 21, the air port of the air knife 5 is downwardly aligned with the rotating drum, and the outer end of the air knife 5 is connected to a fan 6.

[0017] Further, the support shaft 9 is hollow inside, one end of the support shaft 9 is connected to the fan 6, and the part of the support shaft 9 located in the rotating drum is provided with a plurality of air holes in the radial direction.

[0018] Further, two-stage material guiding inclined plates 3 are arranged at the feeding port, the inclined directions of the two-stage material guiding inclined plates 3 are opposite, and one of the material guiding inclined plates 3 is located above the other.

[0019] Further, the driving mechanism 4 comprises a motor, a driving wheel and a driven wheel, the motor is connected to the fixed rack 1, the output end of the motor is provided with the driving wheel, the driven wheel is fixedly connected to the rotating drum, bearings are arranged between the driven wheel and the support shaft 9, and a transmission chain is arranged between the driving wheel and the driven wheel.

[0020] The working principle of the utility model is as follows: when the mineral materials enter the feeding port from the upper side, the two inclined material guiding inclined plates 3 block and buffer the mineral materials to uniformly spread and then fall on the rotating drum, the rotating drum is driven by the driving mechanism 4 to rotate in the clockwise direction in the visual angle, the mineral materials first pass through the area of the permanent magnet 7, the concentrate is adsorbed on the rotating drum, and the tailings are thrown to the tailings outlet 22 by the rotating drum, the concentrate is rotated to the concentrate outlet 21 together with the rotating drum, and a part of the concentrate adhered to the surface of the rotating drum is blown to the concentrate outlet 21 under the blowing force of the air knife 5. Figure 4 The fan 6 divides the external cold air into two paths, one part of the cold air enters the air knife 5, and the other part of the cold air enters the support shaft 9 and then diffuses into the rotating drum through the air holes to cool the rotating drum and the bearing parts.

Claims

1. A dry magnetic separator, characterized by: The utility model relates to a kind of permanent magnet magnetic separation device, including fixed frame, fixed frame is equipped with shell, shell top is equipped with feed inlet, and the both sides of shell bottom end are equipped with concentrate outlet and tailings outlet respectively, shell is equipped with a rotating drum, the both ends of rotating drum are rotatably connected with shell, the center of rotating drum is equipped with a support shaft, support shaft is rotatably connected between rotating drum, and support shaft both ends are outwardly worn out rotating drum and shell and are connected with fixed frame, the one end of rotating drum is equipped with driving mechanism, driving mechanism rotates rotating drum with support shaft as pivot, the part of support shaft in rotating drum is equipped with support frame, support frame is equipped with permanent magnet, permanent magnet is evenly arranged half circle with rotating shaft as axis, permanent magnet is located in the side of tailings outlet, and a certain interval is equipped between the outer ring of permanent magnet and rotating drum; The shell is equipped with air knife, air knife is arranged above concentrate outlet, and the air port of air knife is downwardly aligned with rotating drum, and the outer end of air knife is connected to fan; The support shaft is hollow structure, one end of support shaft is connected to fan, and the part of support shaft in rotating drum is provided with a plurality of air holes along radial direction.

2. A dry magnetic separator according to claim 1, characterized in that: Two-stage guide chute is arranged at feed inlet, and the inclination direction of two-stage guide chute is opposite, and one of guide chute is located above the other.

3. A dry magnetic separator according to claim 1, characterized in that: The driving mechanism includes motor, driving wheel, driven wheel, the motor is connected with fixed frame, the output end of motor is equipped with the driving wheel, the driven wheel is fixedly connected with rotating drum, bearing is arranged between driven wheel and support shaft, and transmission chain is arranged between driving wheel and driven wheel.

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