Wash system hydrocyclone wet bucket

Abstract

The application provides a washing and screening system cyclone wet barrel, which comprises a wet barrel body, the bottom of the wet barrel body is provided with a feeding port and a connecting channel, and the connecting channel is provided with a wear-resistant lining plate at the connecting position of the connecting channel and the feeding port. The connecting position of the wear-resistant lining plate and the connecting channel is provided with a first preset distance from the end of the connecting channel close to the feeding port, so that at least part of the connecting channel extends into the cavity surrounded by the wear-resistant lining plate, and a filling cavity for placing buffer filling is formed between at least part of the connecting channel and the wear-resistant lining plate. In this way, when the material passes through the feeding port into the washing and screening system after the original barrel wall is worn out, the material is accumulated around the feeding port, and the coal flow impacts the accumulated coal at the feeding port. This method can reduce the impact force of coal on the barrel wall, change the hard impact into flexible impact, thereby relieving the impact of coal on the barrel wall and prolonging the service life of the barrel wall of the washing and screening system.

Description

Technical Field

[0001] This application relates to the technical field of heavy media washing equipment for coal preparation, and in particular to a hydrocyclone wetting tank for a washing system. Background Technology

[0002] Hydrocyclones are widely used in industrial production for classifying and desliming various fine-grained materials. For example, in coal mining enterprises, hydrocyclones are used to separate slurry.

[0003] The basic principle of a hydrocyclone is to separate a mixture with a certain density difference under the action of centrifugal force. The denser component in the mixture moves downward axially and outward radially under the action of the swirling flow field. Upon reaching the conical section, it moves downward along the wall of the hydrocyclone and is discharged from the bottom outlet, thus forming an outer vortex flow field. The less dense component moves towards the central axis and forms an upward-moving inner vortex at the center of the axis, and is then discharged from the overflow outlet, thus achieving the purpose of two-phase separation.

[0004] The wetting barrel used for feeding into the hydrocyclone in coal preparation plays a crucial role in the coal washing process. However, during production, the barrel wall is impacted by the coal flow at the feed inlet, causing the barrel wall to wear through, resulting in material and medium leakage. This often requires shutdown for welding repairs, leading to a significant workload and impacting safe and efficient coal washing production. Summary of the Invention

[0005] This application aims to solve the problem that the wall of the aforementioned wetting barrel is worn through at the feed inlet due to the impact of the coal flow, resulting in material and medium leakage. It provides a hydrocyclone wetting barrel for a washing and screening system, comprising: a wetting barrel body, wherein the bottom of the wetting barrel body is provided with a feed inlet and a connecting channel.

[0006] One end of the connecting channel is connected to the feed inlet and the other end is connected to the washing and screening system;

[0007] The diameter of the feed inlet is larger than the diameter of the connecting channel, and the connection position between the connecting channel and the feed inlet has a wear-resistant liner.

[0008] The wear-resistant liner is wrapped around the outside of the connecting channel, with one end of the wear-resistant liner connected to the feed port and the other end connected to the connecting channel;

[0009] The connection point between the wear-resistant liner and the connecting channel is at a first preset distance from the end of the connecting channel near the feed inlet, such that at least a portion of the connecting channel extends into the cavity enclosed by the wear-resistant liner, and a filling cavity for placing buffer filler is formed between the at least portion of the connecting channel and the wear-resistant liner.

[0010] In one feasible implementation, the first preset distance is between 15cm and 30cm.

[0011] In one feasible implementation, a connecting plate is further provided between the wear-resistant liner and the feed inlet;

[0012] One end of the connecting plate is connected to the feed port, and the other end of the connecting plate is fixedly connected to the wear-resistant liner.

[0013] The end of the connecting plate near the wear-resistant liner extends toward the connecting channel, and there is a second preset distance between the end of the connecting plate near the wear-resistant liner and the wear-resistant liner.

[0014] In one feasible implementation, the second preset distance is 10cm-20cm.

[0015] In one feasible implementation, the wear-resistant liner is arc-shaped, with the arc protrusions facing the feed inlet.

[0016] In one feasible implementation, the buffer filler is a soft and malleable material that completely fills the filling cavity;

[0017] The height of the buffer filler is equal to the end of the connecting channel near the feed inlet.

[0018] In one feasible implementation, the wear-resistant liner is made of any one of the following: cast stone, alloy, ceramic, and polymer materials.

[0019] As described above, this application provides a wetting tank for a hydrocyclone in a washing and beneficiation system, comprising: a wetting tank body, with an inlet and a connecting channel at the bottom; one end of the connecting channel is connected to the inlet, and the other end is connected to the inner cavity of the hydrocyclone; the diameter of the inlet is larger than the diameter of the connecting channel, and a wear-resistant liner is provided at the connection point between the connecting channel and the inlet; the wear-resistant liner surrounds the outside of the connecting channel, with one end connected to the inlet and the other end connected to the connecting channel; the connection point between the wear-resistant liner and the connecting channel has a first preset distance from the end of the connecting channel near the inlet, such that at least a portion of the connecting channel extends into the cavity formed by the wear-resistant liner, and a filling cavity for placing buffer filler is formed between at least a portion of the connecting channel and the wear-resistant liner. This allows the material to accumulate around the inlet after the original tank wall is worn through, and when the material enters the washing and beneficiation system through the inlet, the material is impacted and the accumulated coal at the inlet is absorbed. This method reduces the impact force of coal on the drum wall, changing it from a hard impact to a soft impact, thereby mitigating the impact and extending the service life of the drum wall in the washing and beneficiation system. Furthermore, this method also reduces the consumption of magnetite powder in the system, decreases the daily maintenance workload for mechanics, and increases the system's uptime. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the implementation of the invention and, together with the description, serve to explain the principles of the embodiments of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the structure of a hydrocyclone wetting tank in an exemplary embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of the hydrocyclone wetting tank of an exemplary embodiment of the washing and screening system of this application;

[0023] Figure 3 This is a schematic diagram of the structure of the hydrocyclone wetting tank of a washing and screening system, which is another exemplary embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100 - Feed inlet; 200 - Connecting channel; 300 - Wear-resistant liner; 400 - Connecting plate; 310 - Filling cavity. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the embodiments of the invention will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of how embodiments of the invention are carried out.

[0027] The wetting tank used for feeding into the hydrocyclone in coal preparation plays a crucial role in the coal washing process. (Refer to...) Figure 1 As shown, the existing wetting tank's wall is impacted by the coal flow at the feed inlet (100°), causing the wall to wear through and resulting in material and medium leakage. Frequent shutdowns are required for welding repairs, leading to a significant workload and impacting safe and efficient coal washing production. This application aims to solve the above problems by providing a hydrocyclone wetting tank for a coal washing system, referring to... Figure 2 As shown, it includes: a wetting tank body, the bottom of which is provided with a feed inlet 100 and a connecting channel 200.

[0028] One end of the connecting channel 200 is connected to the feed inlet 100, and the other end is connected to the washing and screening system. The diameter of the feed inlet 100 is larger than the diameter of the connecting channel 200, and a wear-resistant liner 300 is provided at the connection point between the connecting channel 200 and the feed inlet 100. The feed inlet 100 has a larger diameter to facilitate coal filling and serves as part of the wetting tank, while the connecting channel 200 has a smaller diameter. Therefore, the connection point between the feed inlet 100 and the connecting channel 200 is easily impacted by the coal flow. This application provides a wear-resistant liner 300 at the connection point between the feed inlet 100 and the connecting channel 200 to continue blocking the coal flow even if the feed inlet 100 is damaged, thereby improving the service life of the feed inlet 100.

[0029] The wear-resistant liner 300 surrounds the outside of the connecting channel 200. One end of the wear-resistant liner 300 is connected to the feed inlet 100, and the other end is connected to the connecting channel 200. The connection position of the wear-resistant liner 300 and the connecting channel 200 is at a first preset distance from the end of the connecting channel 200 near the feed inlet 100, so that at least a portion of the connecting channel 200 extends into the cavity formed by the wear-resistant liner 300. A filling cavity 310 for placing buffer filler is formed between at least a portion of the connecting channel 200 and the wear-resistant liner 300.

[0030] During the use of the wear-resistant liner 300, if the feed inlet 100 is damaged, coal will enter the filling cavity 310 and accumulate there as a buffer. The natural accumulation of coal creates a gentle slope at the filling cavity 310. Coal entering the connecting channel 200 from the feed inlet 100 will then benefit from the buffering effect provided by the buffer material at the filling cavity 310, thus preventing the wear-resistant liner 300 and the connection point between the feed inlet 100 and the connecting channel 200 from being impacted by the coal flow. This application extends the service life of the washing system's drum wall by using the wear-resistant liner 300. It also reduces the consumption of magnetite powder in the system, decreases the daily maintenance workload of mechanics, and increases the system's uptime.

[0031] In some embodiments of this application, the first preset distance is between 15cm and 30cm, and so on. Figure 2 As shown, Figure 2 The first preset distance is marked as "L1". The first preset distance L1 forms a filling cavity 310 between the wear-resistant liner 300 and the connecting channel 200. To ensure the volume of the filling cavity 310, the minimum size of the first preset distance L1 should be 15cm. If the size of the first preset distance L1 is less than 15cm, the filling cavity 310 may be too small, and the amount of cushioning material that can be placed will be too small, making it difficult to provide sufficient cushioning effect.

[0032] If the first preset distance L1 is too large, such as exceeding 30cm, the filling cavity 310 will be too large, resulting in excessive coal accumulation and waste. Secondly, the area of ​​the connecting channel 200 subjected to coal flow impact will also be too large, causing damage to the connecting channel 200. Therefore, the first preset distance L1 is designed to be between 15cm and 30cm. For example, if the first preset distance L1 is 20cm, it can reduce the impact on the connecting channel 200 while ensuring sufficient buffer filling material.

[0033] In some embodiments of this application, reference continues to be made to Figure 2 As shown, a connecting plate 400 is also provided between the wear-resistant liner 300 and the feed inlet 100; one end of the connecting plate 400 is connected to the feed inlet 100, and the other end of the connecting plate 400 is fixedly connected to the wear-resistant liner 300; the end of the connecting plate 400 near the wear-resistant liner 300 extends towards the connecting channel 200, and there is a second preset distance between the end of the connecting plate 400 near the wear-resistant liner 300 and the wear-resistant liner 300.

[0034] The connecting plate 400 is used to connect the feed inlet 100 and the wear-resistant liner 300 to reduce the tilt angle of the wear-resistant liner 300, provide partial buffering for the coal flow, and gather the dispersed coal flow so that the coal flow mainly flows towards the connecting channel 200, reducing the impact on the wear-resistant liner 300.

[0035] In some embodiments of this application, reference continues to be made to Figure 2 As shown, Figure 2 The second preset distance is marked as "L2". The second preset distance L2 is 10cm-20cm.

[0036] The second preset distance L2 is the length by which the connecting plate 400 extends beyond the wear-resistant liner 300. This extension ensures that the connection point between the connecting plate 400 and the wear-resistant liner 300 is not exposed, reducing the impact at the connection point and preventing breakage. If the second preset distance L2 is too short (less than 10cm), the protection of the connection point is minimal. If the second preset distance L2 is too long (greater than 20cm), the overall impact force on the connecting plate 400 is greater, increasing the risk of breakage. For example, a second preset distance L2 of 15cm effectively protects the connection point between the connecting plate 400 and the wear-resistant liner 300, and the connecting plate 400 is less susceptible to damage from coal flow impacts.

[0037] In some embodiments of this application, reference is made to Figure 3 As shown, the wear-resistant liner 300 is arc-shaped, and the arc protrusion faces the feed inlet 100.

[0038] The wear-resistant liner 300 is arc-shaped to distribute the impact force evenly. Because the coal flow falls downwards and is converging due to the size of the inlet 100 and connecting channel 200, the lower part of the wear-resistant liner 300 experiences the strongest impact. The arc-shaped structure allows the upper part of the wear-resistant liner 300 to withstand more impact. Simultaneously, the arc shape enhances the strength of the wear-resistant liner 300, extending its service life.

[0039] In some embodiments of this application, the buffer filler is a soft and malleable material, and the buffer filler completely fills the filling cavity 310; the height of the buffer filler is equal to the end of the connecting channel 200 near the inlet 100.

[0040] In addition to allowing the coal to accumulate in the filling cavity 310 on its own, a soft and malleable material can be used as a buffer filling material to fill the filling cavity 310. This way, there is no need to accumulate coal in the filling cavity 310, reducing coal waste, while also providing a buffering effect and making it easy to replace.

[0041] Understandably, the height of the buffer filler should not exceed 200mm of the connecting channel to prevent the falling coal flow from carrying fragments and impurities formed by the impact of the buffer filler into the washing and beneficiation system.

[0042] In some embodiments of this application, the wear-resistant liner 300 is made of any one of cast stone, alloy, ceramic and polymer materials.

[0043] Cast stone is a processed silicate crystalline material, primarily made from natural rocks (basalt, diabase, and other basic rocks, as well as shale) or industrial waste (blast furnace slag, steel slag, copper slag, chromium slag, ferroalloy slag, etc.). It has high hardness, good wear resistance, simple manufacturing process, and low price. Alloy liners include various wear-resistant materials such as cast iron, wear-resistant steel, and new alloys. They are highly malleable, and their toughness and hardness can be altered by adjusting the alloy ratio and forging process. Ceramic materials are currently the most widely used wear-resistant material. Using alumina as the main material, it is calcined at temperatures above 1700 degrees Celsius to transform into α-alumina, achieving a hardness of HRA90 or higher. It is also resistant to high temperatures and acid / alkali corrosion, and can isolate metals. High-molecular-weight wear-resistant materials, represented by polyethylene, are wear-resistant, corrosion-resistant, and have a smooth surface. The wear-resistant liner 300 in this application can be made of materials according to actual needs; this application does not impose specific limitations.

[0044] As can be seen from the above embodiments, this application provides a hydrocyclone wetting tank for a washing and beneficiation system, comprising: a wetting tank body, with an inlet and a connecting channel at the bottom of the wetting tank body; one end of the connecting channel is connected to the inlet and the other end is connected to the inner cavity of the hydrocyclone; the diameter of the inlet is larger than the diameter of the connecting channel, and a wear-resistant liner is provided at the connection position between the connecting channel and the inlet; the wear-resistant liner surrounds the outside of the connecting channel, with one end connected to the inlet and the other end connected to the connecting channel; the connection position between the wear-resistant liner and the connecting channel is at a first preset distance from the end of the connecting channel near the inlet, so that at least a portion of the connecting channel extends into the cavity formed by the wear-resistant liner, and a filling cavity for placing buffer filler is formed between at least a portion of the connecting channel and the wear-resistant liner. This allows the material to accumulate around the inlet after the original tank wall is worn through, and when the material enters the washing and beneficiation system through the inlet, the material is impacted and the accumulated coal at the inlet is absorbed. This method reduces the impact force of coal on the drum wall, changing it from a hard impact to a soft impact, thereby mitigating the impact and extending the service life of the drum wall in the washing and beneficiation system. Furthermore, this method also reduces the consumption of magnetite powder in the system, decreases the daily maintenance workload for mechanics, and increases the system's uptime.

[0045] As can be seen from the foregoing, the embodiments of this application require clarification that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the structure, article, or apparatus that includes that element.

[0046] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

Claims

1. A hydrocyclone wetting tank for a washing and screening system, characterized in that, include: The wetting tank body has an inlet (100) and a connecting channel (200) at the bottom; One end of the connecting channel (200) is connected to the feed inlet (100) and the other end is connected to the washing and screening system; The diameter of the feed inlet (100) is larger than the diameter of the connecting channel (200), and the connecting channel (200) has a wear-resistant liner (300) at the connection position with the feed inlet (100); The wear-resistant liner (300) surrounds the outside of the connecting channel (200), with one end of the wear-resistant liner (300) connected to the feed inlet (100) and the other end connected to the connecting channel (200); The connection point between the wear-resistant liner (300) and the connecting channel (200) is at a first preset distance from the end of the connecting channel (200) near the feed inlet (100), such that at least a portion of the connecting channel (200) extends into the cavity enclosed by the wear-resistant liner (300), and a filling cavity (310) for placing buffer filler is formed between the at least portion of the connecting channel (200) and the wear-resistant liner (300).

2. The hydrocyclone wetting tank of the washing and screening system according to claim 1, characterized in that, The first preset distance is between 15cm and 30cm.

3. The hydrocyclone wetting tank of the washing and screening system according to claim 1, characterized in that, A connecting plate (400) is also provided between the wear-resistant liner (300) and the feed inlet (100); One end of the connecting plate (400) is connected to the feed port (100), and the other end of the connecting plate (400) is fixedly connected to the wear-resistant liner (300); The connecting plate (400) extends towards the connecting channel (200) from one end near the wear-resistant liner (300), and there is a second preset distance between the end of the connecting plate (400) near the wear-resistant liner (300) and the wear-resistant liner (300).

4. The hydrocyclone wetting tank of the washing and screening system according to claim 3, characterized in that, The second preset distance is 10cm-20cm.

5. The hydrocyclone wetting tank of the washing and screening system according to claim 1, characterized in that, The wear-resistant liner (300) is arc-shaped, and the arc protrusion faces the feed inlet (100).

6. The hydrocyclone wetting tank of the washing and screening system according to claim 1, characterized in that, The buffer filler is a soft and malleable material, and the buffer filler completely fills the filling cavity (310); The height of the buffer filler is equal to the end of the connecting channel (200) near the feed port (100).

7. The hydrocyclone wetting tank of the washing and screening system according to claim 1, characterized in that, The wear-resistant liner (300) is made of any one of the following materials: cast stone, alloy, ceramic and polymer.

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