Roller feeding device of electric separator

Abstract

The utility model relates to the technical field of preparation equipment, in particular to an electric separator roller feeding device which comprises a roller, a shell, a motor and a rotating shaft. The roller is grounded; the first end of the shell is provided with a feeding hopper used for allowing materials to enter the shell and a screen located below the feeding hopper. A discharging hopper is arranged at the second end of the shell and connected with the roller so that materials can be added to the roller. The motor is arranged outside the shell; the rotating shaft is arranged in the shell and is coaxially connected with an output shaft of the motor, and the rotating shaft is coaxially connected with a spiral blade; when the motor is started, the rotating shaft drives the spiral blade to rotate, so that materials move from the first end to the second end of the shell in the length direction of the rotating shaft. The feeding hopper can solve the problem that minerals to be separated are not evenly added to a long roller through an existing feeding hopper.

Description

TECHNICAL FIELD

[0001] The utility model relates to dressing equipment technical field, concretely relates to a kind of electric separator drum feeding device. BACKGROUND

[0002] Electric separator is a kind of dressing equipment using electrical property difference to separate different substances.In electric separator, drum feeding is a common feeding mode, which is used to uniformly distribute the minerals to be selected on the drum for electrical separation.

[0003] Currently, the minerals to be selected are usually added to the drum through a feeding hopper.For short drums, the minerals can be uniformly distributed, thereby avoiding overloading or idling of the electric separator and maintaining stable production efficiency.The yield of electric separation is proportional to the length of the drum.If a long drum is used, the size of the feeding hopper is correspondingly increased.Due to the flow characteristics of the materials, "bridging" or "stacking" phenomenon is likely to occur in the feeding hopper, causing unstable flow of the materials at the outlet, which leads to excessive accumulation of materials in some areas of the long drum and less materials in other areas, thereby affecting the separation efficiency of the electric separator. SUMMARY

[0004] Therefore, the utility model aims to provide an electric separator drum feeding device to solve the problem of uneven addition of minerals to be selected to a long drum by a conventional feeding hopper.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] An electric separator drum feeding device includes a drum, a housing, a motor and a rotating shaft.The drum is grounded.The first end of the housing is provided with a feeding hopper for feeding materials into the housing and a screen below the feeding hopper.The second end of the housing is provided with a discharging hopper connected to the drum for feeding the materials onto the drum.The motor is arranged outside the housing.The rotating shaft is arranged in the housing and coaxially connected to the output shaft of the motor, and the rotating shaft is coaxially connected with a spiral blade.The motor drives the spiral blade to rotate when it is started, so that the materials move along the length direction of the rotating shaft from the first end to the second end of the housing.

[0007] As an optional scheme, the feeding hopper is arranged at the top of the first end of the housing, and the discharging hopper is arranged at the bottom of the second end of the housing.

[0008] As an optional scheme, a discharging plate is arranged between the discharging hopper and the drum, and the discharging hopper is connected to the drum through the discharging plate.

[0009] As an optional scheme, the second end of the housing is provided with an open top.

[0010] As an optional solution, the lower surface of the blanking plate is provided with a vibrating device.

[0011] As an optional solution, the electric motor is a variable frequency motor.

[0012] With the above technical solutions, the present application has the following advantages:

[0013] The electric separator drum feeding device provided by the present application drives the helical blade to rotate through the motor driving rotating shaft, so as to generate continuous pushing force on the material entering the housing from the feeding hopper, which continuously moves the material forward in the conveying process, avoids the accumulation of the material at a certain position, and thus realizes the uniform conveying of the selected material to the drum through the discharge hopper.

[0014] Compared with the existing feeding hopper, the present application is suitable for feeding the long drum, can continuously and uniformly convey the selected material to the long drum, and improves the separation efficiency; and can screen out the fine mineral particles in the conveying process, preventing the influence on the separation of the electric separator. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 The front structure schematic diagram of the electric separator drum feeding device is shown in the embodiments of the present application.

[0017] Figure 2 The side structure schematic diagram of the electric separator drum feeding device in the use state is shown in the embodiments. Figure 1

[0018] The electric separator drum feeding device is shown in the embodiments. DETAILED DESCRIPTION

[0019] ​Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some 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 creative labor belong to the scope of protection of the utility model.

[0020] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or 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.

[0022] Please refer to Figure 1 and Figure 2 In an embodiment of the electric separator drum feeding device of the utility model, the electric separator drum feeding device comprises a drum 1, a shell 2, a motor 3 and a rotating shaft 4:

[0023] Among them, the drum 1 is the conventional design of the existing drum 1 feeding mode, which adopts grounding setting; the shell 2 is usually made of steel plate, which can be circular or rectangular section, fixed through the base, the first end top of the shell 2 is fixedly connected with a conical feed hopper 21 communicating with the inside of the shell 2, the feed hopper 21 is used for feeding the selected mineral material into the shell 2, the first end bottom of the shell 2 is provided with a screen 23, the screen 23 is embedded in the middle of the bottom wall of the shell 2, the screen hole of the screen 23 communicates inside and outside the shell 2; the second end bottom of the shell 2 is fixedly connected with a conical discharge hopper 22 communicating with the inside of the shell 2, the end of the discharge hopper 22 away from the shell 2 is connected with the drum 1 to add the selected mineral material in the shell 2 to the drum 1; the screen 23 and the discharge hopper 22 extend along the length direction of the shell 2, and the two are close to each other to cover the length range of the shell 2.

[0024] The motor 3 is fixedly installed on the first end of the shell 2 through a support; the rotating shaft 4 is arranged in the shell 2 along the length direction of the shell 2, both ends of the rotating shaft 4 are respectively installed in both ends of the shell 2 through bearing seats, and one end of the rotating shaft 4 penetrates the side wall of the shell 2 and is coaxially connected with the output shaft of the motor 3, and the part of the rotating shaft 4 in the shell 2 is coaxially welded with the spiral blade 41, so that the shell 2 not only protects the spiral shaft and the spiral blade 41, but also guides the material through the internal friction and pressure; the spiral blade 41 is a spiral blade wound on the rotating shaft 4, and the pitch of the spiral blade 41 gradually increases from the first end to the second end of the shell 2, that is, the pitch near the feeding hopper 21 is designed to be smaller, so that the material can be better sent into the spiral shaft; and the pitch near the discharging hopper 22 is designed to be larger, so as to accelerate the discharge of the material, thereby reducing the material blockage and providing the conveying efficiency.

[0025] In use, the motor 3 is started to drive the rotating shaft 4 to rotate, the rotating shaft 4 drives the spiral blade 41 to rotate, the spiral blade 41 rotating produces a pushing effect on the material entering the shell 2 from the feeding hopper 21, so that the material moves along the length direction of the rotating shaft 4 from the first end to the second end of the shell 2, and when the selected material passes through the screen 23, the fine mineral particles are screened out, and the remaining material is continuously pushed until it is added to the drum 1 from the discharging hopper 22.

[0026] When electrostatic separation is performed, the selected material on the drum 1 obtains many positive charges under the action of the high-voltage corona electric field, the conductive material has good conductivity, and the charges adsorbed on the surface can flow freely on the surface, once the surface contacts the grounded drum 1, the charges on the surface are transmitted away through the drum 1, after the charges are transmitted away, the drum 1 has no adsorption effect on the charges, under the action of the centrifugal force and the gravity, the charges deviate to the side of the electric quantity electrode along the rotation direction of the drum 1 and fall down, the non-conductive material has poor or no conductivity, and the charges adsorbed on the surface cannot or cannot be quickly transmitted away, because opposite poles attract each other, so the material is attracted to the drum 1, the attraction force (Coulomb force) is greater than the combined force of the centrifugal force and the gravity, so the material is tightly adsorbed on the drum surface and rotates to the rear, until it is brushed off by the brush, and the material with conductivity between the two or the charges carried by the material are transmitted away when rotating to the brush, and then fall down. The above is the simple working principle of the existing electrostatic separator 6 for screening minerals, which will not be described here.

[0027] Specifically, a downwardly inclined discharging plate 5 can be arranged between the discharging hopper 22 and the drum 1, the discharging hopper 22 is connected to the drum 1 through the discharging plate 5, so that the material output by the discharging hopper 22 can slide on the drum 1 along the discharging plate 5, by adjusting the discharging mode of the material, it is ensured that the material can uniformly leave the spiral conveyor. This helps to avoid the accumulation or blockage of the material at the discharging port, improves the uniformity and stability of the discharging; in addition, the design of the discharging plate 5 can also reduce the flying of the material dust, and improves the working environment

[0028] More specifically, the second end of the shell 2 is provided with a strip-shaped opening, which extends along the length direction of the shell 2 and corresponds to the length of the discharge hopper 22; when the feeding amount of the feeding hopper 21 is too large, the excess material that cannot be discharged in time is discharged from the opening, preventing the accumulation of material in the shell 2.

[0029] Further, a vibration device 51 can be installed in the middle of the lower surface of the discharging plate 5, which can make the discharging plate 5 vibrate slightly up and down, so that the material can slide down uniformly, and thus the material can be added to the drum 1 more uniformly. The vibration device 51 can specifically adopt an existing electromagnetic vibrator.

[0030] Specifically, the motor 3 is set as a variable frequency motor, which can accurately adjust the rotating speed of the spiral blade 41, thereby controlling the discharging speed of the subsequent discharge hopper 22, and further adjusting the thickness of the material layer on the drum 1, and improving the electric separation efficiency. Of course, a speed reducer can also be provided, so that the motor 3 is connected to the rotating shaft 4 through the speed reducer, so that the rotating speed of the spiral blade 41 can be adjusted.

[0031] The use method or working principle of the utility model is as follows:

[0032] After the selected mineral material enters the shell 2 from the feeding hopper 21, the motor 3 is started to drive the rotating shaft 4 to rotate, the rotating shaft 4 drives the spiral blade 41 to rotate, the spiral blade 41 rotates to push the material in the shell 2, so that the material moves along the length direction of the rotating shaft 4 from the first end to the second end of the shell 2; when the selected mineral material passes through the screen 23, the fine mineral particles are screened out, and the remaining material is continuously pushed until it is added to the drum 1 from the discharge hopper 22, and the rotating drum 1 feeds the electric separator 6, and the electric separator 6 separates the mineral particles according to the difference in electrical properties of the surface of the mineral particles.

[0033] The utility model is driven by the rotation of the spiral blade 41, which continuously pushes the material, and the continuous pushing action makes the material continuously move forward during the conveying process, avoiding the accumulation of the material at a certain position, so that the selected mineral material is uniformly conveyed to the drum 1; and since the fine mineral particles have high surface energy and are easy to adsorb other substances, causing unstable charging performance, so that the fine mineral particles are screened out by the screen 23, the separation effect of the electric separator 6 can be improved.

[0034] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the patent application scope. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. An electrostatic separator drum feeding device comprising a drum (1) arranged in electrical contact with ground; characterized in that, The shell (2), the motor (3) and the rotating shaft (4) are further included; the first end of the shell (2) is provided with a feeding hopper (21) for feeding materials into the shell (2) and a screen (23) below the feeding hopper (21); the second end of the shell (2) is provided with a discharging hopper (22) connected with the roller (1) to feed the materials into the roller (1); the motor (3) is arranged outside the shell (2); the rotating shaft (4) is arranged in the shell (2) and coaxially connected with the output shaft of the motor (3), and the rotating shaft (4) is coaxially connected with a spiral blade (41); when the motor (3) is started, the spiral blade (41) is rotated by the rotating shaft (4), so that the materials move along the length direction of the rotating shaft (4) from the first end to the second end of the shell (2).

2. An electrostatic separator drum feed arrangement according to claim 1, characterised in that, The feeding hopper (21) is arranged at the top of the first end of the shell (2); and the discharging hopper (22) is arranged at the bottom of the second end of the shell (2).

3. An electrostatic separator drum feed arrangement according to claim 2, characterised in that, A discharging plate (5) is arranged between the discharging hopper (22) and the roller (1), and the discharging hopper (22) is connected with the roller (1) through the discharging plate (5).

4. An electrostatic separator drum feed arrangement according to claim 2 or 3, characterised in that, An opening is arranged at the top of the second end of the shell (2).

5. An electrostatic separator drum feed arrangement according to claim 3, characterised in that, A vibrating device (51) is arranged on the lower surface of the discharging plate (5).

6. The electrostatic separator drum feed apparatus of claim 1, wherein, The motor (3) is a variable frequency motor.

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