Ore unloading device of weak magnetic machine

Abstract

The utility model relates to the technical field of ore unloading, in particular to a weak magnetic machine ore unloading device which comprises a pressure stabilizing distribution pipe, a regulating valve, a water curtain generating pipe and a plurality of flow guide connecting pipes, the pressure stabilizing distribution pipe is arranged on one side of a weak magnetic machine, and the pressure stabilizing distribution pipe is connected with a water injection pipe to form a pressure stabilizing structure; the regulating valve is arranged on the water injection pipe and can regulate the water flow; the water curtain generation pipe is located below the pressure stabilizing distribution pipe, and a slit is formed in the water curtain generation pipe and used for generating a water curtain; and the plurality of flow guide connecting pipes are used for connecting the pressure stabilizing distribution pipe and the water curtain generation pipe. Water flow is controlled through the adjusting valve, a pressure stabilizing cavity is formed in the pressure stabilizing distribution pipe, the pressure stabilizing distribution pipe is connected with the water curtain generator through the flow guide connecting pipe, and therefore it is ensured that the water curtain generator can generate a water curtain, and meanwhile the proper water curtain can be obtained by changing the water flow for different ores to avoid material accumulation; therefore, the problem that the production efficiency is reduced due to material accumulation caused by discontinuous water curtains is avoided.

Description

Technical Field

[0001] This utility model relates to the field of ore unloading technology, specifically to a weak magnetic unloading device. Background Technology

[0002] A weak magnetic separator is a commonly used mineral processing equipment for strong magnetic minerals. It uses a magnetic drum to attract the desired magnetic minerals, and then uses water to wash the surface of the magnetic drum to allow the magnetic minerals to fall into the appropriate position, thereby obtaining high-quality magnetic minerals.

[0003] In existing practical applications, nozzles are often used to release water flow to flush magnetic drums for ore unloading. However, the nozzles are prone to clogging or damage during use. In addition, some ore unloading water curtains are also used for ore unloading. However, conventional ore unloading water curtain devices have problems such as discontinuous water curtains and uncontrollable hydraulic pressure, resulting in poor ore unloading effect and material accumulation, which affects production efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of discontinuous water curtain and uncontrollable hydraulic pressure in the original unloading water curtain. It provides a weak magnetic unloading device that can generate a stable water curtain and adjust the water curtain flushing speed according to the mineral's magnetic properties, thereby avoiding the problem of reduced production efficiency caused by material accumulation due to discontinuous water curtain.

[0005] To achieve the above objectives, this utility model provides a weak magnetic unloading device, comprising:

[0006] A voltage stabilizing distribution pipe is installed on one side of the weak magnetic generator. One end of the voltage stabilizing distribution pipe is closed, and the other end is fixedly connected to a water injection pipe to form a voltage stabilizing structure inside the cavity of the voltage stabilizing distribution pipe.

[0007] A regulating valve is provided on the water injection pipe for regulating the water flow rate of the water injection pipe;

[0008] A water curtain generating pipe is provided, which extends in the same direction below the pressure stabilizing distribution pipe. The pipe wall of the water curtain generating pipe is provided with slits extending along its length to generate a water curtain covering the surface of the weak magnetizer drum.

[0009] Several flow guiding pipes are provided, with the upper end of each flow guiding pipe connected to the pressure stabilizing distribution pipe and the lower end connected to the cavity of the water curtain generating pipe. The flow guiding pipes are spaced apart along the axial direction of the pressure stabilizing distribution pipe.

[0010] Preferably, the length of the water curtain generating pipe is not less than the length of the weak magnet drum.

[0011] Preferably, both ends of the water curtain generating pipe are equipped with baffles for sealing.

[0012] Preferably, the slit extends from one end of the water curtain generating pipe to the other end.

[0013] Preferably, the top surface of the water curtain generating pipe is provided with a plurality of through holes at intervals for the flow guiding connecting pipe to pass through.

[0014] Preferably, the through hole and the flow guiding pipe are connected in a sealed fixed connection to form a pressure stabilizing structure within the cavity of the water curtain generating pipe.

[0015] The above technical solution controls the water flow by regulating the valve, balancing the inlet and outlet water flow of the pressure-stabilizing distribution pipe and forming a pressure-stabilizing cavity inside. The water curtain generator is connected through the flow guide pipe, ensuring that the water curtain generator can generate a stable water curtain. At the same time, for different types of magnetic ore unloading, the appropriate water curtain can be obtained by changing the water flow rate to avoid material accumulation, thereby avoiding the problem of reduced production efficiency caused by material accumulation due to discontinuous water curtain. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a weak magnetic unloading device provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the water curtain generator section of the weak magnetic unloading device.

[0018] Explanation of reference numerals in the attached figures

[0019] 1. Pressure stabilizing distribution pipe; 2. Water curtain generating pipe; 3. Flow guiding connection pipe; 4. Weakening magnet; 11. Water injection pipe; 12. Regulating valve; 21. Slit; 22. Baffle; 31. Through hole; 41. Weakening magnet drum. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] like Figure 1As shown, this utility model provides a ore unloading device for a weak magnetic generator. The ore unloading device includes a pressure stabilizing distribution pipe 1, a regulating valve 12, a water curtain generating pipe 2, and several flow guiding connecting pipes 3. The pressure stabilizing distribution pipe 1 is located on one side of the weak magnetic generator 4. One end of the pressure stabilizing distribution pipe 1 is closed, and the other end is fixedly connected to a water injection pipe 11 to form a pressure stabilizing structure within the cavity of the pressure stabilizing distribution pipe 1. The regulating valve 12 is located on the water injection pipe 11 and is used to regulate the water flow rate of the water injection pipe 11. The water curtain generating pipe 2 is located below the pressure stabilizing distribution pipe 1 and extends in the same direction. The pipe wall of the water curtain generating pipe 2 is provided with a slit 21 extending along its length direction to generate a water curtain covering the surface of the weak magnetic generator drum 41. The upper end of the flow guiding connecting pipe 3 is connected to the pressure stabilizing distribution pipe 1, and the lower end is connected to the cavity of the water curtain generating pipe 2. Several flow guiding connecting pipes 3 are spaced apart along the axial direction of the pressure stabilizing distribution pipe 1. The water flow is controlled by regulating valve 12 to balance the inlet and outlet water flow of pressure stabilizing distribution pipe 1 and form a pressure stabilizing cavity inside it. The water curtain generator 2 is connected through the flow guide pipe 3, thereby ensuring that the water curtain generator 2 can generate a stable water curtain. At the same time, for different types of magnetic ore unloading, the appropriate water curtain can be obtained by changing the water flow rate to avoid material accumulation, thereby avoiding the problem of reduced production efficiency caused by material accumulation due to discontinuous water curtain.

[0022] According to the technical solution provided by this utility model, the length of the water curtain generating pipe 2 is not less than the length of the weak magnet drum 41; both ends of the water curtain generating pipe 2 are provided with baffles 22 for sealing; the slit 21 extends from one end of the water curtain generating pipe 2 to the other end. This design ensures that the water curtain generated by the slit 21 of the water curtain generating pipe 2 can completely cover the drum surface of the weak magnet drum 41, reducing the rinsing blind zone.

[0023] According to the technical solution provided by this utility model, the top surface of the water curtain generating pipe 2 is provided with a plurality of through holes 31 at intervals for the flow guiding pipe 3 to pass through; the through holes 31 and the flow guiding pipe 3 are sealed and fixedly connected to form a pressure stabilizing structure within the cavity of the water curtain generating pipe 2. This design allows the pressure stabilizing distribution pipe 1 and the water curtain generating pipe 2 to be connected by a plurality of flow guiding pipes 3, thereby forming a two-stage pressure stabilizing cavity inside the whole, which in turn allows for the regulation of the water curtain flow rate to regulate the flushing force on the weak magnetic roller 41.

[0024] In some embodiments, such as in the beneficiation of large-particle iron ore, where the required rinsing force is relatively small, it is not necessary to form a stable cavity inside the water curtain generating pipe 2. When the magnetic minerals can be rinsed off the weak magnetic drum 41 by gravity alone, relying solely on the overflow of water from the water curtain generating pipe 2 at the slit 21, the water curtain generating pipe 2 can be directly welded to the weak magnetic drum 4, with the slit 21 aligned with the weak magnetic surface of the weak stimulation drum. In this case, the flow guiding pipe 3 does not need to be sealed to the water curtain generating pipe 2. The lower end of the flow guiding pipe 3 is simply placed vertically inside the water curtain generating pipe 2. The water curtain generating pipe 2 can form a stable water curtain by relying solely on the pressure stabilizing distribution pipe 1 and several flow guiding pipes 3. This design can reduce the energy consumption of the device when dealing with the required rinsing force, which can save considerable costs and reduce the number of maintenance cycles.

[0025] In a specific embodiment provided by this utility model:

[0026] A DN100 low-carbon steel pipe is used as the pressure stabilizing distribution pipe 1, where DN represents the nominal diameter of the pipe, and 100 means the nominal diameter is 100 mm. Unless otherwise specified, all dimensions in this document are in millimeters (mm). The axial length of the DN100 low-carbon steel pipe is equal to the length of the magnetic weakening machine drum. Five sets of evenly distributed holes with a diameter of 40 mm are made on the lower side of the DN100 low-carbon steel pipe according to the magnetic pole spacing, and the positioning accuracy is ensured to be ±1 mm through plasma cutting. A DN40 low-carbon steel pipe is welded to each hole as the flow guiding connection pipe 3. The axial length of the DN40 low-carbon steel pipe is 120 mm, extending vertically downwards and machined with an M64×4 flange sealing surface. In the M64×4 flange, M represents metric thread, 64 refers to the nominal diameter of the thread being 64 mm, and 4 refers to the thread pitch, i.e., the axial distance between corresponding points on the pitch line of two adjacent threads. The water curtain generating pipe 2 uses a DN200 high-strength wear-resistant alloy steel pipe as its main body. After being formed by a CNC rolling machine, it is arranged parallel to a DN100 low-carbon steel pipe. Simultaneously, five sets of 40mm diameter butt joint holes are opened at the top of the DN200 high-strength wear-resistant alloy steel pipe, which is rigidly connected to the DN40 low-carbon steel pipe using TIG welding to form a dual-stage pressure-stabilizing cavity. A 25mm wide slit is cut along the length of the DN200 high-strength wear-resistant alloy steel pipe on its side. Laser precision cutting technology is used during the cutting process to ensure a slit width tolerance of ±0.1mm, thus forming a full-width water curtain generator. An electric regulating valve is installed at the front end of a DN100 low-carbon steel pipe to regulate the water flow within the device. During operation, water flowing through the DN100 low-carbon steel pipe forms a pressure-stabilizing cavity inside the pipe and is distributed to the cavities of five DN40 low-carbon steel pipes leading to a DN200 high-strength wear-resistant alloy steel pipe. Within the DN200 cavity, a laminar flow pressure-stabilizing zone is formed, and the water is finally squeezed out through a slit to form a continuous fan-shaped water curtain. Because of the electric regulating valve and the pressure-stabilizing zone within the device, the water curtain coverage on the surface of the weak magnetic roller is increased to over 98.5%, and the water flow rate can be adjusted.

[0027] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A weak magnetic unloading device, characterized in that, include: A pressure stabilizing distribution pipe (1) is set on one side of the weak magnetic generator (4). One end of the pressure stabilizing distribution pipe (1) is closed, and the other end is fixedly connected to a water injection pipe (11) to form a pressure stabilizing structure inside the cavity of the pressure stabilizing distribution pipe (1). A regulating valve (12) is provided on the water injection pipe (11) for regulating the water flow rate of the water injection pipe (11); Water curtain generating pipe (2) is located below the pressure stabilizing distribution pipe (1) and extends in the same direction. A slit (21) extending along its length is provided on the pipe wall of the water curtain generating pipe (2) to generate a water curtain covering the surface of the weak magnetic drum (41). Several flow guiding pipes (3) are provided, with the upper end of the flow guiding pipe (3) connected to the pressure stabilizing distribution pipe (1) and the lower end connected to the cavity of the water curtain generating pipe (2). The several flow guiding pipes (3) are spaced apart along the axial direction of the pressure stabilizing distribution pipe (1).

2. The weak magnetic unloading device according to claim 1, characterized in that, The length of the water curtain generating pipe (2) is not less than the length of the weak magnet roller (41).

3. The weak magnetic unloading device according to claim 1, characterized in that, Both ends of the water curtain generating pipe (2) are sealed with baffles (22).

4. The weak magnetic unloading device according to claim 1, characterized in that, The slit (21) extends from one end of the water curtain generating pipe (2) to the other end.

5. The weak magnetic unloading device according to claim 1, characterized in that, The top surface of the water curtain generating pipe (2) is provided with several through holes (31) for the flow guiding connecting pipe (3) to pass through.

6. The weak magnetic unloading device according to claim 5, characterized in that, The through hole (31) and the flow guiding pipe (3) are sealed and fixedly connected to form a pressure stabilizing structure inside the cavity of the water curtain generating pipe (2).

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