Ore discharge valve of flotation machine

Abstract

The utility model discloses an ore discharge valve of a flotation machine, which relates to the technical field of ore discharge valves, and comprises a main shaft, a flashboard, a wear-resistant plate, a shaft pin, a fixed support, an adjusting strip, a pneumatic actuating mechanism and a middle box, the flashboard is fixedly installed on the middle box through each first threaded rod, and a lower limit baffle is fixedly installed at the lower end of the flashboard. Due to the arrangement of the adjusting blocks and the pneumatic executing mechanism, dynamic switching of ore discharging modes of the flotation machine is achieved, a multi-stage height positioning mechanism is formed by the adjusting blocks on the shaft pins, and the lifting position of the wear-resisting plate in the guide groove can be adjusted in real time in combination with precise driving of the pneumatic executing mechanism. When upward ore discharge is needed, a low-pressure ore discharge channel is formed; and when the lower ore discharging mode is switched, a high-pressure ore discharging path is established, limitation of a fixed partition plate is avoided, and the ore discharging pressure adjusting range is wider.

Description

Technical Field

[0001] This utility model relates to the field of ore discharge valve technology, and in particular to an ore discharge valve for a flotation machine. Background Technology

[0002] A flotation machine, short for flotation mineral processing machine, refers to the mechanical equipment that completes the flotation process. In a flotation machine, after the slurry has been treated with reagents, it is agitated and aerated, causing some mineral particles to selectively adhere to the air bubbles, float to the surface of the slurry, and be scraped off to form a froth product, while the rest remain in the slurry, thus achieving the purpose of separating minerals.

[0003] However, existing flotation machine discharge valves have the following drawbacks: there are two discharge methods for existing flotation machines, using fixed baffles for top discharge and bottom discharge, each with its own advantages and disadvantages. Top discharge has low discharge pressure and is easy to control, but it is prone to causing coarse particles to settle; bottom discharge has high discharge pressure and is not easy to control, but the discharged particle size is uniform. Since the discharge method is fixed during production, it is impossible to select the discharge method according to production needs at any time. With the improvement of quality monitoring, a single discharge method can no longer meet the current needs. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a flotation machine discharge valve that solves the problem of using fixed baffles for upper and lower discharge. Upper discharge has low discharge pressure, which is easy to control but can easily cause coarse particles to settle; lower discharge has high discharge pressure, which is difficult to control but produces uniform particle size. Since the discharge method is fixed during production, it is impossible to select the discharge method according to production needs. As quality monitoring becomes more stringent, a single discharge method can no longer meet current requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flotation machine discharge valve includes a main shaft, a gate, a wear-resistant plate, a pin, a fixed bracket, adjusting bars, a pneumatic actuator, and an intermediate box. The gate is provided with at least two first threaded rods, and the gate is fixedly installed on the intermediate box through each first threaded rod. A lower limit baffle is fixedly installed at the lower end of the gate. The pin is provided with at least two adjusting blocks. The wear-resistant plate has two guide grooves and a second threaded rod. The wear-resistant plate is connected to the pin through the second threaded rod. The fixed bracket is provided with at least two adjusting bars.

[0008] Preferably, the pneumatic actuator is located at the upper end of the main shaft.

[0009] Preferably, the surface of the intermediate box is provided with an anti-corrosion coating.

[0010] Compared with the prior art, the present invention has the following beneficial effects.

[0011] I. This utility model achieves dynamic switching of the flotation machine's discharge mode by incorporating adjusting blocks and a pneumatic actuator. Multiple adjusting blocks on the shaft pin form a multi-level height positioning mechanism, which, combined with the precise drive of the pneumatic actuator, allows for real-time adjustment of the wear-resistant plate's lifting position within the guide trough. When upper discharge is required, a low-pressure discharge channel is created; when switching to lower discharge mode, a high-pressure discharge path is established, avoiding the limitations of fixed partitions and allowing for a wider range of discharge pressure adjustment.

[0012] II. This device achieves easy maintenance and long service life by combining guide grooves and intermediate boxes. The gate and guide groove form a modular assembly system, and the second threaded rod is welded with wear-resistant plate, which can be quickly disassembled and maintained. The surface of the intermediate box is coated with anti-corrosion coating, and combined with the outward extension structure design, it effectively resists the erosion and corrosion of slurry. Attached Figure Description

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a structural diagram of the gate of this utility model;

[0015] Figure 2 This is a structural diagram of the wear-resistant plate of this utility model;

[0016] Figure 3 This is a structural diagram of the shaft pin of this utility model;

[0017] Figure 4 This is a structural diagram of the fixed bracket of this utility model;

[0018] Figure 5 This is an overall structural diagram of the flotation machine of this utility model.

[0019] Legend: 1. First threaded rod; 11. Gate plate; 2. Lower limit baffle; 3. Guide groove; 4. Second threaded rod; 5. Wear-resistant plate; 6. Adjusting block; 61. Shaft pin; 7. Fixed bracket; 71. Adjusting bar; 8. Pneumatic actuator; 9. Intermediate box. Detailed Implementation

[0020] This application provides a flotation machine discharge valve that effectively solves the technical problem of using a fixed baffle for upper and lower discharge. Upper discharge has low pressure, is difficult to control, and easily causes coarse particles to settle; lower discharge has high pressure, is also difficult to control, but produces uniform particle size. Since the discharge method is fixed during production, it cannot be selected according to production needs. With increasing quality monitoring, a single discharge method can no longer meet current requirements. This invention achieves dynamic switching of the flotation machine discharge mode by setting an adjusting block 6 and a pneumatic actuator 8. Multiple adjusting blocks 6 on the shaft pin 61 form a multi-level height positioning mechanism. Combined with the precise drive of the pneumatic actuator 8, the lifting position of the wear-resistant plate 5 in the guide trough 3 can be adjusted in real time. When upper discharge is needed, a low-pressure discharge channel is formed; when switching to lower discharge mode, a high-pressure discharge path is established, avoiding the limitations of a fixed baffle and making the discharge pressure adjustment range wider. Example

[0021] like Figure 1-5 As shown, the technical solution in this application embodiment effectively solves the problem of using a fixed baffle for upper and lower ore discharge. Upper ore discharge has low discharge pressure, making it difficult to control and prone to causing coarse particle settling; lower ore discharge has high discharge pressure, making it difficult to control, but resulting in uniform ore particle size. Since the discharge method is fixed during production, it cannot be selected according to production needs. With increasing quality monitoring, a single discharge method can no longer meet current requirements. The overall approach is as follows: A flotation machine discharge valve includes a main shaft, gate 11, wear-resistant plate 5, shaft pin 61, fixed bracket 7, adjusting bar 71, pneumatic actuator 8, and intermediate box 9. The user... The flotation machine process controller controls the pneumatic actuator 8 to adjust the up and down movement of the main shaft. The bottom of the intermediate box 9 is 1 / 4 of the height of the tank body. The inner and outer sides of the intermediate box 9 are coated with diamond for corrosion protection. The gate plate 11 is fixed to the intermediate box 9 by screws. The wear-resistant plate 5 is inserted into the gate plate 11 through the guide groove 3. The wear-resistant plate 5 is connected to the shaft pin 61 through the second threaded rod 4. The wear-resistant plate 5 is inserted into the gate plate 11 and the lower part of the adjusting block 6 is close to the lower limit baffle 2. The parameters of the flotation machine process controller are manually adjusted. The main shaft is finely adjusted up and down. After selecting a suitable shaft pin hole position, it is fixed to the main shaft with screws. After the main shaft is positioned, the adjusting strip 71 on the bracket 7 is fixed with screws to prevent the main shaft from swinging significantly.

[0022] The gate 11 is provided with at least two first threaded rods 1. The gate 11 is fixedly installed on the intermediate box 9 through each first threaded rod 1. The lower end of the gate 11 is fixedly installed with a lower limit baffle 2. The shaft pin 61 is provided with at least two adjusting blocks 6. The discharge mode can be quickly switched by adjusting the height of the adjusting blocks 6: the high position corresponds to the upper discharge mode, and the low position realizes the lower discharge mode. The extended box structure allows the intermediate box 9 to be installed at 1 / 4 to 1 / 3 elevation of the flotation machine, which avoids the deposition of coarse particles at the bottom and maintains a suitable discharge pressure. The surface anti-corrosion coating has good corrosion resistance in the slurry environment of the gate 11. When the slurry particle size is detected to be at a certain threshold, the controller starts the lower discharge mode: the pneumatic actuator 8 pushes the main shaft down and is positioned through the fourth adjusting hole of the adjusting block 6. The wear-resistant plate 5 is lowered to the position of the lower limit baffle 2 to form a high-pressure discharge flow.

[0023] Two guide grooves 3 are provided on the wear-resistant plate 5. A second threaded rod 4 is provided on the wear-resistant plate 5. The wear-resistant plate 5 is connected to the shaft pin 61 through the second threaded rod 4. The shaft pin 61 forms a multi-stage height adjustment interface with the main shaft through the adjusting block 6. With the second threaded rod 4 welded to the wear-resistant plate 5, the linear motion of the pneumatic actuator 8 can be accurately converted into the vertical displacement of the wear-resistant plate 5. The guide grooves 3 and the wear-resistant plate 5 form a sliding pair. Together with the wear-resistant plate 5 at the bottom of the gate 11, they form a dual positioning system, which ensures the accuracy of the lifting trajectory of the wear-resistant plate 5.

[0024] The fixed bracket 7 is provided with at least two adjusting bars 71. The pneumatic actuator 8 is located at the upper end of the main shaft. The pneumatic actuator 8 serves as a power source and receives instructions from the flotation machine process controller to drive the main shaft to move. The main shaft is longitudinally positioned through the adjusting bars 71 on the fixed bracket 7.

[0025] The surface of the intermediate box 9 is coated with an anti-corrosion coating, which, combined with the outward-extending structural design, effectively resists the erosion and corrosion caused by slurry.

[0026] To address the problems existing in the prior art, this utility model provides a flotation machine discharge valve. This utility model, by setting up adjusting blocks 6 and a pneumatic actuator 8, realizes dynamic switching of the flotation machine discharge mode. Multiple adjusting blocks 6 on the shaft pin 61 form a multi-level height positioning mechanism. Combined with the precise drive of the pneumatic actuator 8, the lifting position of the wear-resistant plate 5 within the guide channel 3 can be adjusted in real time. When upper discharge is required, a low-pressure discharge channel is formed; when switching to lower discharge mode, a high-pressure discharge path is established, avoiding the limitations of fixed partitions and making the discharge pressure adjustment range wider.

[0027] First threaded rod 1: used to fix the gate plate 11 on the intermediate box 9, so as to achieve a stable connection between the gate plate 11 and the intermediate box 9.

[0028] Gate 11: Installed on the intermediate box 9, with a lower limit baffle 2 fixed at its lower end, which plays a role in controlling and guiding the flow of slurry during the ore discharge process.

[0029] Lower limit baffle 2: Fixed at the lower end of the gate 11, it provides a limit for the downward movement of the wear-resistant plate 5, ensuring that the wear-resistant plate 5 forms a discharge flow state in a suitable position.

[0030] Guide groove 3: It is formed on wear-resistant plate 5 and forms a sliding pair with wear-resistant plate 5. Together with the bottom wear-resistant plate 5 of gate 11, it forms a dual positioning system to ensure the accuracy of the lifting trajectory of wear-resistant plate 5.

[0031] The second threaded rod 4 is located on the wear-resistant plate 5 and is used to connect with the shaft pin 61 to accurately convert the linear motion of the pneumatic actuator 8 into the vertical displacement of the wear-resistant plate 5.

[0032] Wear-resistant plate 5: It is inserted into the gate plate 11 through the guide groove 3 and connected to the shaft pin 61. It plays a wear-resistant role in the ore discharge process. Its position can be adjusted by the adjusting block 6 and the pneumatic actuator 8 to switch the ore discharge mode.

[0033] Adjustment block 6: Set on shaft pin 61 to form a multi-level height positioning mechanism. Through multiple height settings, the ore discharge mode can be quickly switched. The high position corresponds to the upper ore discharge mode, and the low position realizes the lower ore discharge mode.

[0034] Shaft pin 61: It forms a multi-stage height adjustment interface with the main shaft through the adjusting block 6, and cooperates with the second threaded rod 4 welded to the wear-resistant plate 5 to realize motion conversion.

[0035] Fixed bracket 7: Used to fix the spindle, and has an adjusting bar 71 on it, which can longitudinally position the spindle and prevent the spindle from swinging too much.

[0036] Adjustment bar 71: Set on the fixed bracket 7, it assists the spindle in longitudinal positioning and enhances the spindle's operational stability.

[0037] Pneumatic actuator 8: As a power source, it is located at the upper end of the main shaft and receives instructions from the flotation machine process controller to drive the main shaft to move, thereby realizing the dynamic switching of the discharge mode.

[0038] Intermediate box 9: Installed at 1 / 4 height from the bottom of the tank, coated with diamond grit for corrosion protection on the inside and outside, and has an anti-corrosion coating on the surface. Its extended box structure makes the installation position suitable, which avoids the deposition of coarse particles at the bottom and maintains a suitable discharge pressure. It is used to install components such as gate 11 and is an important carrier of the entire discharge valve structure.

[0039] Working principle:

[0040] The user controls the pneumatic actuator 8 via the flotation machine process controller to adjust the vertical movement of the main shaft. The bottom of the intermediate box 9 is positioned at 1 / 4 of the tank height. The inner and outer surfaces of the intermediate box 9 are coated with corundum for corrosion protection. The gate 11 is fixed to the intermediate box 9 by screws. A wear-resistant plate 5 is inserted into the gate 11 via the guide groove 3. The wear-resistant plate 5 is connected to the shaft pin 61 via the second threaded rod 4. The wear-resistant plate 5 is inserted into the gate 11, and the lower part of the adjusting block 6 is pressed against the lower limit baffle 2. The flotation machine process controller parameters are manually adjusted, and the main shaft is finely adjusted vertically. After selecting a suitable shaft pin hole position, it is fixed to the main shaft with screws. After the main shaft is positioned, the adjusting strip 71 on the fixing bracket 7 is fixed with screws to prevent large swings of the main shaft. The pneumatic actuator 8 serves as the power source, receiving commands from the flotation machine process controller to drive the main shaft movement. The main shaft is longitudinally positioned via the adjusting strip 71 on the fixing bracket 7. The screw fastening method significantly reduces the swing amplitude and ensures stable power transmission. The shaft pin 61 forms a multi-stage height adjustment interface with the main shaft via the adjusting block 6, in conjunction with the wear-resistant... The second threaded rod 4 welded to plate 5 can accurately convert the linear motion of the pneumatic actuator 8 into the vertical displacement of the wear-resistant plate 5. The guide groove 3 and the wear-resistant plate 5 form a sliding pair, which, together with the wear-resistant plate 5 at the bottom of the gate 11, constitutes a dual positioning system. This ensures the accuracy of the lifting trajectory of the wear-resistant plate 5 and prevents sealing failure caused by excessive downward movement. The discharge mode can be quickly switched by adjusting the multiple height settings of the adjustment block 6: the high position corresponds to the upper discharge mode, and the low position realizes the lower discharge mode. The extended box structure allows the intermediate box 9 to be installed in the flotation stage. At the 1 / 4 to 1 / 3 elevation of the machine, coarse particles are avoided from settling at the bottom while maintaining a suitable discharge pressure. The surface anti-corrosion coating has good corrosion resistance in the slurry environment of the gate 11. When the particle size of the slurry is detected to be within a certain threshold, the controller starts the lower discharge mode: the pneumatic actuator 8 pushes the main shaft down and is positioned through the fourth adjustment hole of the adjustment block 6. The wear plate 5 is lowered to the position of the lower limit baffle 2, forming a high-pressure discharge flow. Conversely, when the upper discharge mode is used, the wear plate 5 is raised to the top of the guide trough 3 to achieve low-pressure and precise discharge.

[0041] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A floatation machine discharge valve comprising a main shaft, a gate (11), a wear plate (5), a shaft pin (61), a fixed bracket (7), an adjusting strip (71), a pneumatic actuator (8) and an intermediate box (9), characterized in that, The shutter (11) is provided with at least two first threaded rods (1), the shutter (11) is fixedly installed on the middle box (9) through each first threaded rod (1), and the lower end of the shutter (11) is fixedly installed with a lower limit baffle (2). Wherein, the shaft pin (61) is provided with at least two adjusting blocks (6).

2. A flotation cell draw valve according to claim 1, characterised in that: Two guide grooves (3) are formed in the wear plate (5).

3. A flotation cell draw valve according to claim 2 wherein: The wear plate (5) is provided with a second threaded rod (4), and the wear plate (5) is connected with the shaft pin (61) through the second threaded rod (4).

4. A flotation cell draw valve according to claim 3 wherein: The fixed support (7) is provided with at least two adjusting strips (71).

5. A flotation cell draw valve according to claim 4 wherein: The pneumatic actuator (8) is located at the upper end of the main shaft.

6. A flotation cell draw valve according to claim 5 wherein: The surface of the middle box (9) is provided with a corrosion-resistant coating.

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