Liquid level control device of flotation machine

Abstract

The utility model belongs to the technical field of preparation equipment, and particularly discloses a liquid level control device of a flotation machine. A flange of the device is fixed to the outer side of the groove wall of the flotation machine, an ore discharge pipe is fixed to and penetrates through the flange, a foam partition plate is fixed to the inner side of the groove wall of the flotation machine in a U shape to form a floating foam intercepting structure with the upper portion and the lower portion open, and the inner side end of the ore discharge pipe penetrates through the groove wall of the flotation machine and extends into the floating foam intercepting structure. And one end of the horizontal plate is fixed to the upper end of the liquid level adjusting flashboard, the screw rod penetrates through the horizontal plate in a threaded connection mode, the bottom end of the screw rod is rotationally connected with the ore discharging pipe, and the top end of the screw rod is fixed to the handle. The foam partition plate is arranged in the tank, foam can be prevented from being discharged, liquid level adjustment can be achieved through the liquid level adjusting flashboard adjusted through the screw, the flotation effect can be guaranteed, and the flotation tank has the advantages of being compact in structure, convenient and fast to operate, stable and reliable in adjustment and not prone to being blocked.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing equipment technology, specifically relating to a flotation machine liquid level control device that is compact in structure, easy to operate, stable and reliable in adjustment, and not prone to clogging. Background Technology

[0002] Flotation equipment is widely used in the beneficiation of non-ferrous metals, ferrous metals, and non-metallic minerals. During the flotation process, accurately controlling the liquid level in the flotation cell to maintain a stable pulp level not only stabilizes the flotation operation and directly affects flotation efficiency, but also helps improve the recovery rate and grade of valuable minerals. Therefore, to ensure the effectiveness of flotation, liquid level control in the flotation machine is a crucial step in the mineral beneficiation process.

[0003] Currently, flotation machine level control can be achieved through both manual and automatic methods. Manual control typically involves installing valves on the feed pipe, water supply pipe, and discharge pipe, adjusting these valves according to experience or operating procedures to ensure a stable slurry level. However, when flotating minerals with a high specific gravity, conventional valves are prone to clogging due to ore particle deposition, affecting the stable operation of the unit. While specially designed valves exist to mitigate clogging, they are not only complex and costly but also bulky, requiring significant installation space and thus unsuitable for smaller flotation machines, especially small-capacity dual-cell flotation machines. Automatic control usually relies on sensors and actuators. While it offers more precise and efficient level management, it also presents challenges in system maintenance. If a malfunction occurs during testing, leading to system failure, it will affect the stable operation of the flotation process and could even cause serious losses.

[0004] In existing technologies, to address the problem of liquid level control in flotation machines, a method involves installing a float ball inside the flotation cell and a sealing plug that mates with the outlet. A spring and a rope connected to the float ball are fixed to the end of the sealing plug furthest from the outlet. The float ball, under the buoyancy of the slurry, pulls the sealing plug away from the outlet until the flow rate of slurry flowing out of the outlet equals the flow rate of slurry flowing into the inlet pipe, thus maintaining a balanced slurry level. While this solution avoids the problems of complex valve structures leading to easy clogging and difficulties in automatic control and maintenance, the float ball gradually rises before the selected flotation height is reached, causing the sealing plug to slightly open and resulting in slurry leakage and waste. To address this, a separate discharge hopper is installed within the flotation cell, with the outlet located inside. The discharge hopper is connected to the flotation cell via a sliding plate valve. A lifting device is installed at the top of the flotation cell to pull the plate valve up and down, ensuring the valve is manually opened only after the flotation liquid level reaches a predetermined height, thus avoiding premature valve opening and resulting pulp waste. Furthermore, to prevent wear caused by impurities adhering to the lifting device's lever, a lever-connected flushing mechanism is installed. This mechanism removes adhering impurities by simultaneously flushing the lifting device's lever during lifting. However, due to the complex structure of the flushing mechanism, it is prone to rapid wear due to impurities adhering to it, and its location within the flotation cell makes subsequent maintenance difficult. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flotation machine level control device that is compact in structure, easy to operate, stable and reliable in adjustment, and not prone to clogging.

[0006] The flotation machine level control device of this utility model is implemented as follows: it includes a flange and a discharge pipe. The flange is fixedly installed on the outside of the flotation tank wall, and the discharge pipe is fixed and passes through the flange.

[0007] It also includes a foam baffle, a liquid level regulating gate, a horizontal plate, a screw, and a handle. The foam baffle is fixedly installed in a "U" shape on the inner side of the flotation tank wall to form a foam interception structure with open top and bottom. The inner end of the discharge pipe penetrates the flotation tank wall and extends into the foam interception structure. The upper part of the flange has a vertically arranged through groove that penetrates the discharge pipe downwards. The liquid level regulating gate is vertically arranged and its lower part slides into the through groove of the flange. The horizontal plate is horizontally arranged and one end is fixedly connected to the upper end of the liquid level regulating gate. The screw is vertically arranged and threadedly connected to the horizontal plate. The bottom end of the screw is rotatably connected to the discharge pipe and the top end is fixedly connected to the horizontally arranged handle.

[0008] Furthermore, the horizontal plate is provided with a through hole I, and the horizontal plate is also fixedly connected with a fixing nut coaxial with the through hole I. The screw is threadedly connected to the through fixing nut and passes through the through hole I of the horizontal plate.

[0009] Furthermore, the screw is also threaded with an anti-loosening nut, and the flange is fixedly connected to the flotation tank wall by fixing screws.

[0010] Furthermore, a "T"-shaped rotating sleeve is vertically fixed at the top of the discharge pipe, and a pressure cap is detachably connected to the top of the rotating sleeve. A connecting turntable is detachably fixed to the bottom of the screw. A through hole II with a diameter smaller than that of the connecting turntable is provided through the pressure cap. The connecting turntable is rotatably disposed in the inner hole of the rotating sleeve, and the screw above the connecting turntable rotates through the through hole II of the pressure cap.

[0011] Furthermore, the width of the flange groove and the width of the liquid level regulating gate are not less than the inner diameter of the discharge pipe, the bottom of the flange groove is not higher than the bottom of the inner hole of the discharge pipe, and the top of the foam baffle is higher than the opening of the discharge pipe.

[0012] Furthermore, a sealing strip is fixedly provided at the top opening of the through groove of the flange, which slides against the surface of the liquid level regulating gate.

[0013] Furthermore, this utility model also includes a rack, a collar, a gear, a connecting rod, and a cleaning brush. The collar is fixedly installed on the inner side of the flotation tank wall and is coaxial with the inner end of the discharge pipe. The gear is rotatably sleeved on the collar. The rack is vertically installed in the space enclosed by the foam baffle and meshes with the gear. One end of the connecting rod is fixedly connected to the gear and the other end extends into the discharge pipe. The cleaning brush is fixed parallel to the connecting rod inside the discharge pipe, and the bristles away from the connecting rod abut against the inner hole of the discharge pipe.

[0014] Furthermore, the connecting rod has an "L" shaped structure, the end of the gear away from the flotation tank wall protrudes from the inner end of the discharge pipe and is fixedly connected to one end of the connecting rod, and the cleaning brush extends to the through groove near the flange.

[0015] Furthermore, a guide clamp is vertically fixed within the space enclosed by the foam barrier, and the toothless section of the middle and / or upper part of the rack slides through the guide hole in the middle of the guide clamp.

[0016] Furthermore, the top of the rack extends out of the upper end of the flotation tank and is fixedly connected to a horizontally positioned handle.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model constructs a foam interception structure with open top and bottom by setting a foam baffle plate on the inner side of the flotation tank wall and extending the inner end of the discharge pipe into the foam interception structure. As a result, under the action of density and buoyancy, the foam can only float outside the foam baffle plate, preventing the foam from entering the discharge port and being discharged. This reduces costs and improves the efficiency of flotation.

[0019] 2. This utility model features a screw installed on the outer side of the flotation tank wall. By rotating the screw, a liquid level regulating gate moves up and down within the through groove on the upper part of the flange. The liquid level regulating gate can then be used to adjust the size of the discharge pipe opening, thus replacing conventional valves to control the water flow in the discharge pipe. This ensures the flotation effect, and the external screw also avoids the problem of rapid wear caused by impurity adhesion. Therefore, there is no need to set up an impurity scraping mechanism and a cleaning mechanism, which effectively simplifies the structure, reduces the overall size, and avoids the problem of slurry waste caused by premature opening of the float valve.

[0020] 3. This utility model further provides a cleaning mechanism consisting of a rack, gear, connecting rod and cleaning brush on the inner side of the flotation tank wall. The rack can be driven to move up and down as needed to drive the gear to rotate, thereby driving the cleaning brush extending into the discharge pipe to rotate, achieving the purpose of cleaning the inner wall of the discharge pipe. This can avoid the pipe blockage problem caused by the deposition of ore particles and ensure the stable operation of the control device.

[0021] In summary, this utility model features a compact structure, convenient operation, stable and reliable adjustment, and is not prone to clogging. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the flotation machine liquid level control device of this utility model;

[0023] Figure 2 This is a three-dimensional schematic diagram of the screw and its connecting structure of the present invention;

[0024] Figure 3 This is a longitudinal sectional view of the cleaning mechanism of this utility model, perpendicular to the axis of the discharge pipe;

[0025] Figure 4 This is a longitudinal sectional view of the cleaning mechanism of this utility model, parallel to the axis of the discharge pipe;

[0026] In the diagram: 1-Flange, 2-Discharge pipe, 3-Foam separator, 4-Flotation tank wall, 5-Level regulating gate, 6-Level plate, 7-Screw, 8-Handle, 9-Fixing nut, 10-Anti-loosening nut, 11-Fixing screw, 12-Rotating sleeve, 13-Pressure cap, 14-Connecting turntable, 20-Rack, 21-Collar, 22-Gear, 23-Connecting rod, 24-Cleaning brush, 25-Guide clamp, 26-Handle. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0028] like Figures 1 to 4 As shown, the flotation machine liquid level control device of this utility model includes a flange 1 and a discharge pipe 2. The flange 1 is fixedly installed on the outside of the flotation machine tank wall 4, and the discharge pipe 2 is fixed and passes through the flange 1.

[0029] It also includes a foam baffle 3, a liquid level regulating gate 5, a horizontal plate 6, a screw 7, and a handle 8. The foam baffle 3 is fixedly installed in a "U" shape on the inner side of the flotation tank wall 4 to form a foam interception structure with open top and bottom. The inner end of the discharge pipe 2 penetrates the flotation tank wall 4 and extends into the foam interception structure. The upper part of the flange 1 is vertically provided with a through groove that penetrates the discharge pipe 2 downwards. The liquid level regulating gate 5 is vertically provided and its lower part slides into the through groove of the flange 1. The horizontal plate 6 is horizontally provided and one end is fixedly connected to the upper end of the liquid level regulating gate 5. The screw 7 is vertically provided and threadedly connected to the horizontal plate 6. The bottom end of the screw 7 is rotatably connected to the discharge pipe 2 and the top end is fixedly connected to the horizontally provided handle 8.

[0030] The horizontal plate 6 is provided with a through hole I, and the horizontal plate 6 is also fixedly connected with a fixing nut 9 coaxial with the through hole I. The screw 7 is threadedly connected to the through fixing nut 9 and passes through the through hole I of the horizontal plate 6.

[0031] The screw 7 is also threaded with an anti-loosening nut 10, and the flange 1 is fixedly connected to the flotation tank wall 4 by a fixing screw 11.

[0032] The top end of the discharge pipe 2 is vertically fixed with a "T"-shaped rotating sleeve 12. The top end of the rotating sleeve 12 is detachably connected with a pressure cap 13. The bottom end of the screw 7 is detachably fixedly connected with a connecting turntable 14. The pressure cap 13 has a through hole II with a diameter smaller than that of the connecting turntable 14. The connecting turntable 14 is rotatably disposed in the inner hole of the rotating sleeve 12. The screw 7 above the connecting turntable 14 rotates through the through hole II of the pressure cap 13.

[0033] The width of the through groove of the flange 1 and the width of the liquid level regulating gate 5 are not less than the inner diameter of the discharge pipe 2. The bottom end of the through groove of the flange 1 is not higher than the bottom end of the inner hole of the discharge pipe 2. The top end of the foam baffle 3 is higher than the opening of the discharge pipe 2.

[0034] A sealing strip is fixedly installed at the top opening of the through groove of the flange 1, which slides against the surface of the liquid level regulating gate 5.

[0035] This utility model also includes a rack 20, a collar 21, a gear 22, a connecting rod 23, and a cleaning brush 24. The collar 21 is fixedly installed on the inner side of the flotation tank wall 4 and is coaxial with the inner end of the discharge pipe 2. The gear 22 is rotatably sleeved on the collar 21. The rack 20 is vertically installed in the space enclosed by the foam-sparing plate 3 and meshes with the gear 22. One end of the connecting rod 23 is fixedly connected to the gear 22 and the other end extends into the discharge pipe 2. The cleaning brush 24 is fixed parallel to the connecting rod 23 inside the discharge pipe 2, and the bristles away from the connecting rod 23 abut against the inner hole of the discharge pipe 2.

[0036] The connecting rod 23 has an "L" shaped structure. The end of the gear 22 away from the flotation tank wall 4 protrudes from the inner end of the discharge pipe 2 and is fixedly connected to one end of the connecting rod 23. The cleaning brush 24 extends to the through groove near the flange 1.

[0037] A guide clamp 25 is vertically fixed within the space enclosed by the foam barrier 3, and the toothless section of the middle and / or upper part of the rack 20 slides through the guide hole in the middle of the guide clamp 25.

[0038] The top end of the rack 20 extends out of the upper end of the flotation tank and is fixedly connected to a horizontally arranged handle 26.

[0039] The working principle and process of this utility model:

[0040] like Figures 1 to 4 As shown, during operation, the liquid in the flotation tank enters through the lower opening of the foam interception structure formed by the foam baffle 3 and is discharged through the discharge pipe 2. During the discharge process, because the foam interception structure is higher than the discharge pipe 2, the foam baffle 3 isolates the foam and prevents it from being discharged. When adjusting the liquid level, the screw 7 is rotated by turning the handle 8. The rotating screw 7, in cooperation with the fixing nut 9, drives the horizontal plate 6 and the liquid level regulating gate 5 to move up and down in the through groove opened on the upper part of the flange 1, thereby achieving liquid level regulation using the liquid level regulating gate 5. After the flotation operation has been running for a certain period of time, the rack 20 is moved up and down by pulling the handle 26. This drives the gear 22 to rotate by the meshing of the rack 20 and the gear 22. The rotating gear 22 drives the connecting rod 23 and the cleaning brush 24 fixed to it to rotate. Thus, the cleaning brush 24, which abuts against the inner hole of the discharge pipe 2, rotates to clean the discharge pipe 2, preventing the discharge pipe 2 from becoming clogged.

[0041] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A flotation machine liquid level control device, characterized in that: Includes a flange (1) and a discharge pipe (2). The flange (1) is fixedly installed on the outside of the flotation tank wall (4), and the discharge pipe (2) is fixed and passes through the flange (1). The features are as follows: it also includes a foam baffle (3), a liquid level regulating gate (5), a horizontal plate (6), a screw (7), and a handle (8). The foam baffle (3) is fixedly installed in a "U" shape on the inner side of the flotation tank wall (4) to form a foam interception structure with open top and bottom. The inner end of the discharge pipe (2) penetrates the flotation tank wall (4) and extends into the foam interception structure. The upper part of the flange (1) is vertically provided with a through groove that penetrates the discharge pipe (2) downward. The liquid level regulating gate (5) is vertically provided and its lower part slides into the through groove of the flange (1). The horizontal plate (6) is horizontally provided and one end is fixedly connected to the upper end of the liquid level regulating gate (5). The screw (7) is vertically provided and threadedly connected to the horizontal plate (6). The bottom end of the screw (7) is rotatably connected to the discharge pipe (2) and the top end is fixedly connected to the horizontally provided handle (8).

2. The flotation machine level control device according to claim 1, characterized in that: The horizontal plate (6) is provided with a through hole I, and the horizontal plate (6) is also fixedly connected with a fixing nut (9) coaxial with the through hole I. The screw (7) is threadedly connected to the fixing nut (9) and passes through the through hole I of the horizontal plate (6).

3. The flotation machine level control device according to claim 2, characterized in that: The screw (7) is also threaded with a locking nut (10), and the flange (1) is fixedly connected to the flotation tank wall (4) by a fixing screw (11).

4. The flotation machine level control device according to claim 1, characterized in that: The top end of the discharge pipe (2) is vertically fixed with a "T"-shaped rotating sleeve (12). The top end of the rotating sleeve (12) is detachably connected with a pressure cap (13). The bottom end of the screw (7) is detachably fixedly connected with a connecting turntable (14). The pressure cap (13) is provided with a through hole II with a diameter smaller than that of the connecting turntable (14). The connecting turntable (14) is rotatably disposed in the inner hole of the rotating sleeve (12). The screw (7) above the connecting turntable (14) rotates through the through hole II of the pressure cap (13).

5. The flotation machine level control device according to any one of claims 1 to 4, characterized in that: The width of the through groove of the flange (1) and the width of the liquid level regulating gate (5) are not less than the inner diameter of the discharge pipe (2), the bottom of the through groove of the flange (1) is not higher than the bottom of the inner hole of the discharge pipe (2), and the top of the foam baffle (3) is higher than the opening of the discharge pipe (2).

6. The flotation machine level control device according to claim 5, characterized in that: The flange (1) has a sealing strip fixedly installed at the top opening of the through groove, which slides against the surface of the liquid level regulating gate (5).

7. The flotation machine level control device according to claim 5, characterized in that: It also includes a rack (20), a collar (21), a gear (22), a connecting rod (23), and a cleaning brush (24). The collar (21) is fixedly installed on the inner side of the flotation tank wall (4) and is coaxial with the inner end of the discharge pipe (2). The gear (22) is rotatably sleeved on the collar (21). The rack (20) is vertically installed in the space enclosed by the foam baffle (3) and meshes with the gear (22). One end of the connecting rod (23) is fixedly connected to the gear (22) and the other end extends into the discharge pipe (2). The cleaning brush (24) is fixed parallel to the connecting rod (23) inside the discharge pipe (2) and the bristles away from the connecting rod (23) abut against the inner hole of the discharge pipe (2).

8. The flotation machine level control device according to claim 7, characterized in that: The connecting rod (23) has an "L" shaped structure. The end of the gear (22) away from the flotation tank wall (4) protrudes from the inner end of the discharge pipe (2) and is fixedly connected to one end of the connecting rod (23). The cleaning brush (24) extends to the through groove near the flange (1).

9. The flotation machine level control device according to claim 7, characterized in that: A guide clamp (25) is vertically fixed within the space enclosed by the foam barrier (3), and the toothless section of the middle and / or upper part of the rack (20) slides through the guide hole in the middle of the guide clamp (25).

10. The flotation machine level control device according to claim 7, characterized in that: The top end of the rack (20) extends out of the upper end of the flotation tank and is fixedly connected to a horizontally arranged handle (26).

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