Flotation cell bottom flow ore drawing conical valve sealing device

Abstract

The utility model discloses a flotation tank bottom flow ore drawing conical valve sealing device which comprises a flotation tank, a liquid level meter and an ore discharge port are arranged in the flotation tank, the ore discharge port is communicated with an ore discharge pipe, a conical plug is arranged in the flotation tank at the ore discharge port, and a conical sealing piece matched with the conical plug in taper is arranged below the conical plug. The upper end face of the conical plug is connected with a conical valve connecting rod, the top of the conical valve connecting rod is connected with a pneumatic executing mechanism, the pneumatic executing mechanism is provided with a travel switch electrically connected to the pneumatic executing mechanism, the travel switch is used for controlling the travel of the pneumatic executing mechanism, and the travel switch is interlocked with the liquid level meter. According to the utility model, the liquid level of ore pulp in the flotation tank can be kept stable during maintenance, valuable metal loss caused by leakage of high-grade ore pulp in the flotation tank to the tailing concentration tank can be avoided, and the flotation effect can be prevented from being influenced by fluctuation of factors such as grading concentration, reagent concentration and flotation liquid level caused by water injection again during driving; and the stability of flotation operation process control and production indexes is greatly improved.

Description

Technical Field

[0001] This utility model relates to a sealing device, specifically a sealing device for a cone valve for bottom discharge ore in a flotation cell. Background Technology

[0002] In flotation systems, underflow valves are required to regulate the flotation liquid level. During maintenance, these valves must be completely closed to stabilize the flotation cell level. However, in actual production, poor sealing of the underflow valves often leads to slurry leakage. High-grade slurry leaking from the flotation cell into the tailings thickener not only causes the loss of valuable metals but also lowers the flotation liquid level. Before system startup, water needs to be added again, which can cause fluctuations in the separation concentration, reagent concentration, and flotation liquid level, affecting the flotation effect.

[0003] To prevent fluctuations in flotation parameters caused by slurry leakage in the flotation cell during maintenance, the following two methods are typically used to stabilize the flotation cell level: 1. Minimize the height of the cone plug using a manual valve. While this method reduces slurry leakage, it does not fundamentally solve the problem. Furthermore, excessively tightening the manual valve can damage the valve and its opening adjustment linkage, affecting the stable control of the flotation system. 2. Increase the frequency of replacing the cone plug and bottom seal. While this method effectively solves the slurry leakage problem, it involves a large workload and high maintenance costs.

[0004] Therefore, it is particularly important to adopt a scientific and effective method to maintain a stable liquid level in the flotation tank during maintenance, thereby ensuring stable flotation indicators. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing device for a cone valve for bottom discharge ore in a flotation cell.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sealing device for a bottom discharge conical valve in a flotation cell includes a flotation cell, a level gauge and a discharge port inside the flotation cell, the discharge port being connected to a discharge pipe, a conical plug inside the flotation cell at the discharge port, a conical sealing element below the conical plug with a taper matching the conical plug, the conical sealing element being fixed inside the flotation cell, a conical valve connecting rod connected to the upper end face of the conical plug, the top of the conical valve connecting rod being connected to a pneumatic actuator, a limit switch electrically connected to the pneumatic actuator being provided on the pneumatic actuator, the limit switch being used to control the stroke of the pneumatic actuator, and the limit switch being interlocked with the level gauge.

[0008] Furthermore, the conical seal includes a conical skeleton, the conical skeleton includes a conical part, a horizontal connecting part is provided on the outer periphery of the conical part, the horizontal connecting part and the conical part are integrally formed, the horizontal connecting part is provided with a connecting hole in the circumferential direction, and the outer and inner sides of the conical part are wrapped with rubber.

[0009] Furthermore, the included angle of the conical part of the conical seal is 30°~70°.

[0010] This invention increases the contact area between the conical plug and the sealing device, changing the line-to-surface contact between the sealing device and the conical plug to a surface-to-surface contact.

[0011] This invention improves the sealing element below the conical plug by replacing ordinary metal material with 304 stainless steel as the skeleton, and wrapping rubber on the conical skeleton. The rubber is elastic, which helps to improve the sealing effect.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By using this new technology to improve the sealing performance of the underflow valve in the flotation cell, it is possible to ensure a stable flotation cell level during maintenance, prevent high-grade slurry leakage that could cause fluctuations in flotation parameters, and extend the service life of the underflow valve. This greatly improves the stability of the flotation process control and plays an important role in the non-ferrous metal flotation process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the result of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the conical valve and conical plug of this utility model;

[0016] In the diagram: 1. Flotation cell, 2. Conical seal, 21. Conical frame, 22. Connecting hole, 23. Rubber, 3. Discharge pipe, 4. Conical plug, 5. Conical valve connecting rod, 6. Pneumatic actuator, 7. Level gauge. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] A sealing device for a cone valve for bottom discharge ore in a flotation cell, such as Figure 1 and Figure 2 As shown, the flotation cell 1 includes a level gauge 7 and a discharge port. The discharge port is connected to the discharge pipe 3. A conical plug 4 is installed in the flotation cell at the discharge port. A conical seal 2 with a taper matching the taper of the conical plug 4 is installed below the conical plug 4. The conical seal 2 is fixed in the flotation cell 1. A conical valve connecting rod 5 is connected to the upper end face of the conical plug 4. The top of the conical valve connecting rod 5 is connected to a pneumatic actuator 6. A limit switch electrically connected to the pneumatic actuator 6 is provided on the pneumatic actuator 6. The limit switch is used to control the stroke of the pneumatic actuator 6. The limit switch is interlocked with the level gauge 7.

[0019] The conical seal 2 includes a conical skeleton 21, which includes a conical part. A horizontal connecting part is provided on the outer periphery of the conical part. The horizontal connecting part and the conical part are integrally formed. A connecting hole 22 is provided on the circumference of the horizontal connecting part. Rubber 23 is wrapped on both the outer and inner sides of the conical part.

[0020] The included angle of the conical part of the conical seal 2 is 30°~70°.

[0021] This invention increases the contact area between the conical plug 4 and the sealing element, changing the line-to-surface contact between the sealing element and the conical plug to a surface-to-surface contact.

[0022] In use, the included angle α of the conical part of the conical seal 2 is 56°. The bottom diameter D2 of the conical seal 2 is 300mm, the top diameter D1 is 461mm, the depth H1 of the conical seal 2 is 140mm, the depth H2 of the conical skeleton is 118.5mm, the thickness δ1 of the conical part of the skeleton is 6mm, the thickness δ2 of the horizontal connection is 10mm, and the thickness δ3 of the rubber covering the surface of the conical part is 10mm. The pneumatic actuator 6 specifically adopts a cylinder.

[0023] The pneumatic actuator 6 is interlocked with the level gauge 7. When the flotation liquid level is lower than the set value, the conical plug 4 moves downward, automatically decreasing until it is completely closed. The pneumatic actuator 6 adjusts the distance between the conical plug 4 and the seal below the conical plug through the conical valve connecting rod 5, thereby adjusting the slurry flow rate and realizing the liquid level adjustment of flotation cell 1. During maintenance, when the flotation system stops feeding and the flotation liquid level is lower than the set value, the valve is completely closed, and the conical plug 4 is in full contact with the bottom sealing device, sealing the slurry in flotation cell 1 and stabilizing the liquid level in flotation cell 1.

[0024] The above description is only a partial embodiment of this utility model. For those skilled in the art, several improvements and substitutions can be made without departing from the principle of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A sealing device for a cone valve for bottom discharge ore in a flotation cell, characterized in that, The system includes a flotation cell, which is equipped with a level gauge and a discharge port. The discharge port is connected to a discharge pipe. A conical plug is installed in the flotation cell at the discharge port. Below the conical plug is a conical seal that matches the taper of the conical plug. The conical seal is fixed in the flotation cell. A conical valve connecting rod is connected to the upper end face of the conical plug. The top of the conical valve connecting rod is connected to a pneumatic actuator. The pneumatic actuator is equipped with a limit switch electrically connected to the pneumatic actuator. The limit switch is used to control the stroke of the pneumatic actuator. The limit switch is interlocked with the level gauge.

2. The sealing device for the bottom discharge cone valve of the flotation cell according to claim 1, characterized in that, The conical seal includes a conical skeleton, which includes a conical part. A horizontal connecting part is provided on the outer periphery of the conical part. The horizontal connecting part and the conical part are integrally formed. A connecting hole is provided on the circumference of the horizontal connecting part. Both the outer and inner sides of the conical part are wrapped with rubber.

3. The sealing device for the bottom discharge cone valve of the flotation cell according to claim 2, characterized in that, The included angle of the tapered part of the tapered seal is 30°~70°.

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