A deep cone thickener rake processing system and method

Abstract

The present invention relates to a deep cone thickener pressure rake processing system, comprising a deep cone thickener, an overflow weir provided above the deep cone thickener, an overflow water pipe connected to the overflow weir, an underflow port provided at the bottom of the deep cone thickener, the underflow port connected to an underflow pump, and the underflow pump discharges the slurry from the material layer at the bottom of the deep cone thickener; a submersible pump provided in the deep cone thickener, the submersible pump discharges the clean water above the deep cone thickener to the overflow weir, and the overflow weir discharges the clean water to a high-level water tank via a variable frequency pipeline pump. Compared with the prior art, the present invention makes full use of the overflow weir. When draining clean water, a portion of the clean water can be discharged through the overflow weir to speed up the drainage speed; when cleaning materials, clean water can be introduced from the overflow trough to rinse the bottom materials. The deep cone thickener is very high. When water flows down from a height of 10 meters, the potential energy will be converted into kinetic energy to flush the materials toward the center, completing the cleaning of the materials. The efficiency is higher than that of traditional cleaning methods, and the safety is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of deep cone thickeners, and in particular to a deep cone thickener rake processing system and method. Background Art

[0002] In pursuit of higher underflow concentration, a deep cone thickener was developed based on the previous thickener. The so-called thickener rake pressure is a very troublesome production accident caused by mechanical failure or improper operation, which makes the rake unable to rotate. Traditional thickeners have a rake lifting function, which means lifting the rake frame when it cannot rotate. As the height of the deep cone thickener increases, the height of the material layer inside it also increases, which makes the previous thickener rake lifting technology useless. Therefore, most of the current deep cone thickeners have abolished the rake lifting function. Once the deep cone thickener is rake pressed, it is necessary to completely empty the deep cone thickener before it can be put into operation again. The volume of the thickener is often thousands of cubic meters. Once a rake pressure accident occurs, it takes a long time to empty all the materials, which has a great negative impact on the normal production of mining enterprises.

[0003] For thickeners with a rake-lifting function, the water is first drained to expose the rake frame. The rake frame is then cleared and lifted with a water gun. Fresh water is then injected into the thickener, causing the rake frame to slowly rotate and sink, gradually completing the cleanup of the rake crush accident. Of course, this process requires workers to open a manhole and enter to complete the cleaning of the rake frame. For large-diameter thickeners, small construction machinery can also be used to clear the ore sand inside the thickener, completing the accident as quickly as possible. However, deep-cone thickeners lack a rake-lifting function. The thickener must first be drained, and then the manhole is opened. Workers then enter through the manhole and use a water gun to flush the material, flushing it out through the underflow. Normal operation can only be achieved after it is completely cleared. Previous accident handling processes have presented numerous challenges. Entering the thickener through the manhole is extremely dangerous, prone to safety incidents, and inefficient. In addition, the material layer of the deep cone thickener is high, and there may be a situation where the manhole is located below the material layer; secondly, the bottom flow of the deep cone thickener is pumped to the underground goaf as a filling material, and the low-concentration bottom flow cannot be discharged underground, and there is no sufficient volume to accommodate the material in the thickener.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a deep cone thickener rake processing system and method to solve the problems mentioned in the above background technology.

[0006] To achieve one of the above purposes, the present invention provides the following technical solutions:

[0007] A deep cone thickener pressure rake processing system includes a deep cone thickener, an overflow weir is provided above the deep cone thickener, an overflow water pipe is connected to the overflow weir, an underflow port is provided at the bottom of the deep cone thickener, the underflow port is connected to an underflow pump, and the underflow pump discharges slurry from the material layer at the bottom of the deep cone thickener;

[0008] A submersible pump is provided in the deep cone thickener, and the submersible pump discharges the clean water above the deep cone thickener to the overflow weir. The overflow weir discharges the clean water to a high-level water tank through a variable frequency pipeline pump.

[0009] Preferably, the number of submersible pumps provided in the deep cone thickener is 2-3, and the flow rate is 25-30 m³ / h.

[0010] Preferably, the overflow water pipe is also connected to a clean water pipe.

[0011] Preferably, the flow rate of the underflow pump is 100m³ / h.

[0012] Preferably, the clean water pipeline pumps the water in the high-level water tank back to the overflow weir through a submersible pump.

[0013] Preferably, the flow rate of the submersible pump is 100 m³ / h.

[0014] Preferably, an operating platform is provided above the center of the deep cone thickener, and a water pipe is provided on the operating platform, and the water pipe is connected to the overflow weir.

[0015] To achieve the second of the above objectives, the present invention provides the following technical solutions:

[0016] A deep cone thickener raking treatment method comprises the following steps:

[0017] Step S100: The slurry in the lower material layer of the deep cone thickener is pumped from the underflow port to the tailings pond by an underflow pump with a flow rate of 100 m³ / h;

[0018] Step S200: 2-3 submersible pumps with a flow rate of 25-30 m³ / h are installed in the deep cone thickener, and the submersible pumps pump the clear water layer in the upper part of the deep cone thickener to the overflow weir;

[0019] Step S300: The water in the overflow weir is pumped to the high-level water tank through a 200m³ / h variable frequency pipeline pump;

[0020] Step S400: After the water is drained, a 100m³ / h submersible pump is used to pump the water in the high-level water tank back to the overflow weir through the clean water pipeline;

[0021] Step S500: After the overflow weir is full, the water overflows into the deep cone thickener, thereby cleaning the deep cone thickener.

[0022] Preferably, in step S400:

[0023] The overflow weir is provided with a water pipe connected to the operating platform above the center of the deep cone thickener. The water in the overflow weir is sprayed from the operating platform to the inside of the deep cone thickener through the water pipe, thereby cleaning the deep cone thickener.

[0024] Compared to existing technologies, the present invention provides a deep-cone thickener raking system and method that fully utilizes the overflow weir of the deep-cone thickener. When draining clear water, a portion of the clear water can be discharged through the overflow weir, accelerating drainage. When cleaning materials, clear water can be introduced from the overflow trough to rinse the bottom material. The deep-cone thickener is very tall, and water flowing down from a height of 10 meters converts its gravitational potential energy into sufficient kinetic energy. Water accumulates around the cylinder walls, naturally flushing the material toward the center, completing the cleaning process. This system is far more efficient than traditional cleaning methods and significantly improves safety.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a deep cone thickener rake processing system provided in one embodiment of the present invention.

[0028] The diagram is as follows:

[0029] 1. Overflow weir; 2. Submersible pump; 3. Overflow pipe; 4. Underflow pump; 5. Variable frequency pipeline pump; 6. Clean water layer; 7. Material layer; 8. Underflow outlet; 9. Clean water pipeline. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, one embodiment of the present invention provides a deep cone thickener pressure rake processing system, including a deep cone thickener. An overflow weir 1 is provided above the deep cone thickener, connected to an overflow water pipe 3. An underflow port 8 is provided at the bottom of the deep cone thickener, connected to an underflow pump 4. The underflow pump 4 discharges slurry from a material layer 7 at the bottom of the deep cone thickener. A submersible pump 2 is provided within the deep cone thickener, discharging clean water from above the deep cone thickener to the overflow weir 1. From the overflow weir 1, the clean water is discharged to a high-level water tank via a variable-frequency pipeline pump 5. Two to three submersible pumps 2 are provided in the deep cone thickener, each with a flow rate of 25 to 30 m³ / h. A clean water pipe 9 is also connected to the overflow water pipe 3. The underflow pump 4 has a flow rate of 100 m³ / h. The clean water pipeline 9 pumps water from the high-level water tank back to the overflow weir 1 via a submersible pump. The submersible pump has a flow rate of 100 m³ / h. An operating platform is located above the center of the deep-cone thickener, and a water pipe is installed on the platform, which is connected to the overflow weir 1.

[0032] The present invention takes a deep cone thickener with a volume of 1200m³ as an example and can be promoted and used according to specific sizes. First, it is necessary to empty the water in the clear water layer 6 of the deep cone thickener. Figure 1As shown, there are two ways to drain the water inside the thickener. Path one: an underflow pump 4 with a flow rate of 100 m³ / h pumps the slurry to the tailings pond. Path two: a variable-frequency pipeline pump 5 with a flow rate of 200 m³ / h pumps the water back to the elevated reservoir. Once the clean water is emptied, a 100 m³ / h submersible pump in the clean water pipeline 9 pumps clean water from the elevated reservoir to the overflow weir 1. Once the overflow weir 1 is full, the water overflows into the deep-cone thickener, cleaning the material. However, due to the limited assembly precision of the deep-cone thickener, uniform cleaning of the material is not possible. Therefore, two to three submersible pumps 2 with a flow rate of 25-30 m³ / h are lowered into the overflow weir 1. Water pipes are then routed to the upper operating platform of the deep-cone thickener and tied to the platform's railings, or workers use handheld water pipes to clean the material inside the thickener. Among the aforementioned equipment, the underflow pump 4, submersible pump, and submersible pump 2 are all required for production and are plug-and-play, eliminating the need for equipment transportation and installation. This method eliminates the need for workers to open a manhole to access the deep-cone thickener, saving time and manpower, and is both safer and faster.

[0033] In addition, another embodiment of the present invention provides a deep cone thickener raking treatment method, comprising the following steps:

[0034] Step S100: The slurry in the lower material layer 7 of the deep cone thickener is pumped from the underflow port 8 to the tailings pond by the underflow pump 4 with a flow rate of 100 m³ / h;

[0035] Step S200: 2-3 submersible pumps 2 with a flow rate of 25-30 m³ / h are installed in the deep cone thickener. The submersible pumps 2 pump the water in the upper clear water layer 6 of the deep cone thickener to the overflow weir 1;

[0036] Step S300: The water in the overflow weir 1 is pumped to the high-level water tank by the 200m³ / h variable frequency pipeline pump 5;

[0037] Step S400: After the water is drained, a 100m³ / h submersible pump is used to pump the water in the high-level water tank back to the overflow weir 1 through the clean water pipe 9;

[0038] Step S500: After the overflow weir 1 is full of water, the water overflows into the deep cone thickener, thereby cleaning the deep cone thickener.

[0039] Wherein, in the step S400:

[0040] The overflow weir 1 is provided with a water pipe connected to the operating platform above the center of the deep cone thickener. The water in the overflow weir 1 is sprayed from the operating platform to the inside of the deep cone thickener through the water pipe, thereby cleaning the deep cone thickener.

[0041] This invention fully utilizes the overflow weir 1 of the deep-cone thickener. When draining clean water, a portion of the clean water can be discharged through the overflow weir 1, accelerating drainage. When cleaning materials, clean water can be introduced from the overflow trough to rinse the bottom material. The deep-cone thickener is very high, and water flowing down from a height of 10 meters converts its gravitational potential energy into sufficient kinetic energy. The water, which flows around the cylinder walls, naturally flushes the material toward the center, completing the cleaning process. This method is far more efficient than traditional cleaning methods and significantly improves safety.

[0042] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0044] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0045] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention. It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Claims

1. A deep cone thickener raking method, characterized in that: A deep cone thickener rake processing system is provided, comprising a deep cone thickener, an overflow weir is provided above the deep cone thickener, an overflow water pipe is connected to the overflow weir, an underflow port is provided at the bottom of the deep cone thickener, the underflow port is connected to an underflow pump, and the underflow pump discharges slurry from the material layer at the bottom of the deep cone thickener; A submersible pump is provided in the deep cone thickener, and the submersible pump discharges the clean water above the deep cone thickener to the overflow weir, and the clean water in the overflow weir is discharged to the high-level water tank through a variable frequency pipeline pump; The deep cone thickener rake treatment method comprises the following steps: Step S100: The slurry in the lower material layer of the deep cone thickener is pumped from the underflow port to the tailings pond by an underflow pump with a flow rate of 100 m³ / h; Step S200: 2-3 submersible pumps with a flow rate of 25-30 m³ / h are installed in the deep cone thickener, and the submersible pumps pump the clear water layer in the upper part of the deep cone thickener to the overflow weir; Step S300: The water in the overflow weir is pumped to the high-level water tank through a 200m³ / h variable frequency pipeline pump; Step S400: After the water in the deep cone thickener is drained, a 100m³ / h submersible pump is used to pump the water in the high-level water tank back to the overflow weir through the clean water pipeline; Step S500: After the overflow weir is full, the water overflows into the deep cone thickener, thereby cleaning the deep cone thickener.

2. A deep cone thickener raking method according to claim 1, characterized in that: In step S400: The overflow weir is provided with a water pipe connected to the operating platform above the center of the deep cone thickener. The water in the overflow weir is sprayed from the operating platform to the inside of the deep cone thickener through the water pipe, thereby cleaning the deep cone thickener.

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