Device for preventing shaft tube of flotation machine from being blocked

Abstract

The utility model discloses a device for preventing a shaft tube of a flotation machine from being blocked, which comprises the flotation machine and a central shaft tube, and a fixing piece is sleeved on the upper part of the central shaft tube below a belt pulley; the lower part of the central shaft tube is inserted into the flotation machine; an impeller and a gas distributor are arranged at the lower end of the central shaft tube; one side of the fixing piece is connected with an air conveying pipe; the air delivery pipe is respectively connected with an electric valve a and an electric valve b through a tee joint; one end of the electric valve a is connected with a fan; the electric valve b is sequentially connected with an air cannon, an air storage tank and an air compressor through an air pipe. According to the device, the air compressor is adopted as a power source and is matched with the fan and the air cannon, and stable and strong airflow can be provided. Meanwhile, due to the fact that the electric valve and the automatic timing controller are used, the safety problem possibly caused by manual operation is reduced, the working efficiency is improved, the maintenance cost is reduced, and meanwhile the safety and stability of equipment are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of flotation machines, in particular to a device for preventing a shaft tube of a flotation machine from being blocked. Background Art

[0002] In the daily operation of the flotation machine, the flow of slurry and the distribution of gas are two crucial links. However, these problems become particularly prominent when the slurry enters from the air hole of the center tube of the flotation machine shaft tube and adheres to the inside of the flotation machine shaft tube and gas distributor. The adhesion of slurry will not only gradually block the shaft tube and gas distributor, but also affect the aeration effect of the flotation machine on the slurry, thereby directly affecting the recovery rate of the concentrate. Faced with the problem of blockage of the center shaft tube of the flotation machine, the traditional solution often adopts the method of shutting down the whole series and dismantling the equipment. This method is not only time-consuming and labor-intensive, but also has a serious impact on the production of the entire ore dressing plant. Especially when the production task is heavy and time is tight, this shutdown and disassembly method is obviously not the best choice. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a device for preventing the axial tube of a flotation machine from being blocked, which solves the above-mentioned technical problems.

[0004] To achieve the purpose of the utility model, the utility model adopts the following technical scheme: a device for preventing the shaft tube of a flotation machine from being blocked, comprising a flotation machine and a central shaft tube, wherein a pulley is arranged at the upper end of the central shaft tube; the pulley is controlled to rotate by an upper end motor; one end of the motor is connected to a distribution box; a fixing piece is sleeved on the upper part of the central shaft tube located below the pulley; the lower part of the central shaft tube is inserted into the flotation machine; an impeller and a gas distributor are arranged at the lower end of the central shaft tube; an air supply pipe is connected to one side of the fixing piece; the air supply pipe is respectively connected to an electric valve a and an electric valve b through a tee; one end of the electric valve a is connected to a fan; the electric valve b is sequentially connected to an air cannon, an air storage tank and an air compressor through an air pipe.

[0005] Furthermore, the distribution box is provided with an automatic timing controller; the electric valve a and the electric valve b are controlled by the automatic timing controller.

[0006] Furthermore, the fixing member is in the shape of a hollow trapezoidal cylinder; sealing members are provided at the interfaces between the upper and lower ends of the fixing member and the central axis tube.

[0007] Furthermore, a plurality of ventilation holes are distributed on a portion of the tube wall of the central axis tube located inside the fixing piece.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The device can automatically clean the central shaft tube at a predetermined time by setting electric valve a and electric valve b, as well as the fan and air cannon connected thereto. The fan sends air into the central shaft tube through electric valve a, while the air cannon generates a strong airflow when needed through electric valve b and the air compressor, effectively cleaning the materials blocked in the shaft tube and avoiding the blockage problem. The device uses an air compressor as a power source, which cooperates with the fan and air cannon to provide a stable and strong airflow. At the same time, due to the use of electric valves and automatic timing controllers, the safety issues that may be caused by manual operation are reduced, the work efficiency is improved, the maintenance cost is reduced, and the safety and stability of the equipment are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] In the figure: flotation machine-1, central shaft tube-2, pulley-3, impeller-4, gas distributor-5, motor-6, distribution box-7, fan-8, air cannon-9, gas storage tank-10, air compressor-11, tee-12, electric valve a-13, electric valve b-14, gas pipeline-15, air pipe-16, fixing part-17, sealing part-18. DETAILED DESCRIPTION

[0012] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention:

[0013] like Figure 1 As shown, a device for preventing the shaft tube of a flotation machine from being blocked comprises a flotation machine 1 and a central shaft tube 2, wherein a pulley 3 is arranged at the upper end of the central shaft tube 2; the pulley 3 is controlled to rotate by an upper end motor 6; one end of the motor 6 is connected to a distribution box 7; a fixing piece 17 is sleeved on the upper part of the central shaft tube 2 located below the pulley 3; the lower part of the central shaft tube 2 is inserted into the flotation machine 1; an impeller 4 and a gas distributor 5 are arranged at the lower end of the central shaft tube 2; an air supply pipe 15 is connected to one side of the fixing piece 17; the air supply pipe 15 is respectively connected to an electric valve a13 and an electric valve b14 through a tee; one end of the electric valve a13 is connected to a fan 8; the electric valve b14 is sequentially connected to an air cannon 9, an air storage tank 10 and an air compressor 11 through an air pipe 16, so that the central shaft tube can be automatically cleaned at a predetermined time. The fan delivers air into the central shaft tube through the electric valve a, while the air cannon generates strong airflow when needed through the electric valve b and the air compressor, effectively clearing the materials blocked in the shaft tube and avoiding blockage problems.

[0014] Specifically, the distribution box 7 is provided with an automatic timing controller; the electric valve a13 and the electric valve b14 are controlled by the automatic timing controller, and the opening and closing of the electric valve a13 and the electric valve b14 can be performed automatically without manual intervention. This not only improves the convenience of operation, but also reduces the error rate of manual operation and improves work efficiency.

[0015] Specifically, the fixing member 17 is in the shape of a hollow trapezoidal cylinder; sealing members 18 are provided at the interfaces between the upper and lower ends of the fixing member 17 and the central axis tube 2, respectively, to effectively prevent gas leakage and ensure the cleaning effect.

[0016] Specifically, a plurality of ventilation holes are distributed on a portion of the wall of the central axis tube located inside the fixing piece.

[0017] During operation, the motor 6 drives the pulley 3 and the impeller 4 to rotate. The lower end of the impeller 4 is provided with a gas distributor 5. When the impeller 4 in the flotation machine 1 rotates, the slurry in the part of the central shaft tube 2 located in the flotation machine 1 generates centrifugal force under the action of the impeller 4 and is thrown to the surroundings, so that a negative pressure area is formed in the cavity of the central shaft tube 2. The fixing member 17 is fixed to the upper end of the flotation machine 1 and is sleeved on the upper part of the central shaft tube 2. The part of the central shaft tube 2 located in the fixing member 17 has multiple vents evenly distributed on the tube wall. The sealing member 18 inside it ensures the sealing of the interface between the central shaft tube 2 and the fixing member 17 to prevent gas or material leakage. The gas delivery pipe 15 is connected to the electric valve a and the electric valve b respectively through a tee. The electric valve a is connected to the fan 8 for delivering clean gas to the central shaft tube 2 to prevent blockage. The electric valve b is connected to the air cannon 9, the gas storage tank 10 and the air compressor 11 through the air pipe 16. The compressed air pump in the air compressor 11 provides compressed air at a pressure of 0.6-0.8MPa. When the automatic time controller is turned on, the electric valve a13 of the flotation machine 1 is closed, the electric valve b14 of the compressed air pipeline of the air cannon 9 is opened, and the high-pressure and high-speed compressed air enters the central shaft tube 2 of the flotation machine 1 to clean the attachment or ore formation on the inner wall of the shaft and the gas distributor 5. The cleaning is completed within the control time, the electric valve a13 of the flotation machine 1 is opened, the electric valve b14 of the compressed air pipeline of the air cannon 9 is closed, and the air cannon 9 is re-charged to store energy for the next cycle of shaft tube cleaning. Through such periodic operation, the device can effectively prevent the blockage of the flotation machine shaft tube and ensure the smooth progress of the flotation process.

[0018] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A device for preventing the axial tube of a flotation machine from being blocked, comprising a flotation machine (1) and a central axial tube (2), characterized in that: A pulley (3) is provided at the upper end of the central shaft tube (2); the pulley (3) is controlled to rotate by an upper end motor (6); one end of the motor (6) is connected to a distribution box (7); the upper part of the central shaft tube (2) is located below the pulley (3) and is sleeved with a fixing member (17); the lower part of the central shaft tube (2) is inserted into a flotation machine (1); an impeller (4) and a gas distributor (5) are provided at the lower end of the central shaft tube (2); one side of the fixing member (17) is connected to an air supply pipe (15); the air supply pipe (15) is respectively connected to an electric valve a (13) and an electric valve b (14) through a tee; one end of the electric valve a (13) is connected to a fan (8); the electric valve b (14) is sequentially connected to an air cannon (9), an air storage tank (10) and an air compressor (11) through an air pipe (16).

2. A device for preventing the shaft tube of a flotation machine from being blocked according to claim 1, characterized in that: The distribution box (7) is provided with an automatic timing controller; the electric valve a (13) and the electric valve b (14) are controlled by the automatic timing controller.

3. The device for preventing the shaft tube of a flotation machine from being blocked according to claim 1, characterized in that: The fixing member (17) is in the shape of a hollow trapezoidal cylinder; sealing members (18) are provided at the interfaces between the upper and lower ends of the fixing member (17) and the central axis tube (2).

4. The device for preventing the shaft tube of a flotation machine from being blocked according to claim 1, characterized in that: A plurality of ventilation holes are distributed on the wall of the central axis tube (2) located inside the fixing member (17).

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