Device for improving concentration of thickener

Abstract

The utility model provides a device for improving the concentration of a thickener, which comprises a plurality of filter pipes, and each filter pipe comprises a filter section and a drainage section connected with one end of the filter section. The filtering section comprises a perforated pipe arranged on the innermost layer, a filter element arranged on the outer side of the perforated pipe, a filter screen arranged on the outer side of the filter element and a sealing cover connected with the filter element, and the drainage section comprises a drainage pipe. According to the device for improving the concentration of the thickener provided by the utility model, the filter pipes are annularly arranged in a layered manner, and the filter screens, the filter elements, the perforated pipes and the sealing rings are arranged in the filter pipes to form a drainage structure and multi-stage filtration, so that interstitial water in a dense layer can be smoothly drained, and the concentration of the thickener is improved; the filter element and the secondary filter structure which are in threaded connection are adopted, so that the service life of the device is prolonged, and the stability and the reliability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine filling, in particular to a device for improving the concentration of a thickener. Background Art

[0002] In the mining industry, the waste ore produced after mineral processing is generally discharged into the tailings pond for storage. However, the tailings pond is a man-made debris flow hazard source with high potential energy and there is a risk of dam breach. In addition, some harmful components in the tailings will cause serious pollution to the environment around the tailings pond. The filling mining method can fill the tailings produced by mineral processing into the mine again after it is thickened. The application of the filling mining method effectively solves the problem of green and sustainable development of mines.

[0003] In the field of mine filling, deep cone thickeners and storage thickeners are generally used to handle the solid-liquid separation process of tailings slurry. The thickening mechanism of these two types of thickeners is to produce flocs through the reaction of tailings and chemical agents. The flocs quickly settle downward under the action of gravity, and the separated liquid overflows the thickener, thereby initially obtaining a tailings slurry of a certain concentration. In order to meet the mine's requirements for high concentration of filling tailings, the deep cone thickener is equipped with a motor-driven rake frame inside the pool body, and a vertical pipe is installed on its rake frame arm to disturb the tailings in the vertical direction, release the liquid stored between the tailings particles, and achieve the effect of increasing the concentration of tailings. The storage thickener increases the pressure of the tailings slurry in the upper part of the thickener cavity on the bottom tailings by increasing the height of the silo, and presses out the liquid in the bottom tailings floc molecules by the gravity of the tailings slurry in the upper cavity by standing still. During the application of the thickener, the deep cone thickener has poor adaptability to coarse-grained tailings, and is prone to rake compression during the operation of the rake frame. The vertical pipe installed on the rake frame loses its disturbance efficiency and cannot effectively ensure the high concentration of the bottom flow. The storage thickener has a certain lag in the way it discharges water through gravity squeezing, and often requires a long period of sedimentation, which cannot simultaneously meet the requirements of continuous production and high-concentration bottom flow of the mine.

[0004] In view of this, it is necessary to design an improved device for increasing the concentration of the thickener to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a device for improving the concentration of a thickener, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a device for improving the concentration of a thickener, the device comprising a plurality of filter tubes, the filter tube comprising a filter section and a drainage section connected to one end of the filter section, the filter section comprising a porous tube arranged in the innermost layer, a filter element arranged on the outside of the porous tube, a filter screen arranged on the outside of the filter element, and a sealing cover connected to the filter element, and the drainage section comprises a drainage pipe.

[0007] As a further improvement of the utility model, the sealing cover is arranged at one end of the filter section, and the sealing cover is threadedly connected to the filter element.

[0008] As a further improvement of the utility model, a thread is arranged on the inner side of the end of the filter element, and the sealing cover is connected to the filter element via a thread arranged on the outer side of the inner ring.

[0009] As a further improvement of the utility model, the rear end of the porous pipe is connected to one end of the drainage pipe.

[0010] As a further improvement of the utility model, the other end of the drainage pipe is connected to a hole on a side wall of the thickening layer of the thickener.

[0011] As a further improvement of the utility model, the outer diameter of the drain pipe is equal to the outer diameter of the sealing cover.

[0012] As a further improvement of the present invention, the outer diameter of the sealing cover is equal to the outer diameter of the filter screen.

[0013] As a further improvement of the present invention, the inner diameter of the drainage pipe is equal to the inner diameter of the porous pipe.

[0014] As a further improvement of the utility model, the plurality of filter tubes are arranged in two layers on the side wall of the thickening layer of the thickener.

[0015] As a further improvement of the present invention, each layer of the filter tubes on the thickening layer side wall of the thickener is arranged in an annular shape, and the angle between adjacent filter tubes is 60 degrees.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model provides a device for improving the concentration of a thickener. The device can remove interstitial water in the thickening layer more quickly by arranging multiple filter tubes in layers. The filter tubes adopt a drainage structure and a multi-stage filtration design. The combination of the filter tubes, the high-density filter screen and the polyester filter element can effectively separate fine particles and water, making the underflow generated by the thickener more concentrated.

[0018] 2. The filter element in the device for increasing the concentration of the thickener provided by the utility model adopts a threaded connection, which makes it easier to replace the filter element. When the filter element is worn or needs to be cleaned, it is only necessary to unscrew the old filter element and replace it with a new one, without the need for complicated disassembly and assembly processes, thus saving time and labor costs.

[0019] 3. The water filtering structure in the device for increasing the concentration of the thickener provided by the utility model adopts two-stage filtration, that is, first separated by a high-density filter, and then further filtered by a polyester filter element. This multi-stage filtration design can effectively extend the service life of the filter element, reduce the clogging and damage of the filter element, reduce the frequency of maintenance and replacement of the filter element, and improve the reliability and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is provided with a device for improving the concentration of a thickener, and the schematic diagram of the structure of the device is shown in the first viewing angle when in use.

[0021] Figure 2 The present invention is a schematic diagram of the structure of a device for improving the concentration of a thickener in use under a second viewing angle.

[0022] Figure 3 It is a schematic structural diagram of a filter tube in a device for improving the concentration of a thickener provided by the utility model from a third viewing angle.

[0023] Figure 4 It is a schematic structural diagram of a filter tube in a device for improving the concentration of a thickener provided by the utility model at a fourth viewing angle.

[0024] Reference numerals

[0025] 1-filter tube; 2-porous tube; 3-filter screen; 4-filter element; 5-drain pipe; 6-sealing cover; 7-thread; 8-thickener. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0028] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] Please refer to Figure 1 and Figure 2 The utility model provides a device for improving the concentration of a thickener 8, comprising a plurality of filter tubes 1, wherein the filter tubes 1 include a filter section and a drainage section connected to one end of the filter section, wherein the filter section includes a porous tube 2 arranged in the innermost layer, a filter element 4 arranged outside the porous tube 2, a filter screen 3 arranged outside the filter element 4, and a sealing cover 6 connected to the filter element 4, and the drainage section includes a drainage pipe 5. The plurality of filter tubes 1 are arranged in two layers on the side wall of the thickening layer of the thickener 8. Each layer of the filter tubes 1 on the side wall of the thickening layer of the thickener 8 is arranged in an annular manner, and the angle between adjacent filter tubes 1 is 60.

[0030] Specifically, the sealing cover 6 is arranged at one end of the filtering section, and the sealing cover 6 is connected to the filter element 4 by a thread 7. The inner side of the end of the filter element 4 is provided with a thread 7, and the sealing cover 6 is connected to the filter element 4 by a thread 7 arranged on the outer side of the inner ring. The rear end of the porous tube 2 is connected to one end of the drain pipe 5. Such an arrangement can make the filter element 4 easier to replace, while ensuring the efficient filtration and reliability of the device.

[0031] The other end of the drain pipe 5 is connected to the hole on the side wall of the thickening layer of the thickener 8. The outer diameter of the drain pipe 5 is equal to the outer diameter of the sealing cover 6. The outer diameter of the sealing cover 6 is equal to the outer diameter of the filter screen 3. The inner diameter of the drain pipe 5 is equal to the inner diameter of the porous tube 2. Such a configuration can ensure that the flow of water inside the device is not hindered, so that water can effectively pass through the hydrophilic filter material at the front end of the porous tube 2 and the polyester filter element 4, achieving a better filtering effect.

[0032] The working principle of the present invention is further described below in conjunction with specific embodiments:

[0033] When the thickener 8 is fed, the tailings particles continue to sink and thicken under the action of gravity, and gradually form a thickening layer, a compression layer, a sedimentation layer, and a clarifying layer from bottom to top. The clarifying layer (upper layer) has stepped drainage holes. The device is arranged in the thickening layer (lower layer) to drain the tailings in the thickening layer to increase the concentration of the tailings particles. The filter tubes 1 are evenly distributed on each layer of the side wall, and two layers are arranged in total. In the device of this embodiment, a hollow iron pipe is selected as the drainage pipe 5, and a polyester filter element is selected as the filter element 4. The medium and large particle size components between the tailings particles in the lower layer of the thickening layer are separated by the high-density filter screen 3 on the outermost side of the filter tube 1, and the fine particles and water enter the secondary filtering polyester filter element 4. The polyester filter element 4 is connected to the sealing cover 6 through the thread 7. The sealing cover 6 seals the front end of the porous tube 2. Finally, the filtered water flows through the porous tube 2 and is discharged from the thickener 8 from the hollow iron pipe at the rear end of the porous tube 2, so as to achieve the effect of increasing the concentration.

[0034] In summary, the utility model provides a device for improving the concentration of a thickener 8 by arranging the filter tube 1 in layers and in an annular manner, and arranging a filter screen 3, a filter element 4, a porous tube 2 and a sealing ring inside the filter tube 1 to form a drainage structure and multi-stage filtration, thereby ensuring that the interstitial water in the thickening layer can be discharged smoothly to improve the concentration of the thickener 8. The filter element 4 and the secondary filtration structure connected by the thread 7 are adopted to facilitate the replacement of the filter element 4, thereby extending the service life of the device and improving the stability and reliability of the device.

[0035] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A device for increasing the concentration of a thickener, characterized in that: The utility model comprises a plurality of filter tubes, wherein the filter tubes comprise a filter section and a drainage section connected to one end of the filter section, the filter section comprises a porous tube arranged in the innermost layer, a filter element arranged on the outside of the porous tube, a filter screen arranged on the outside of the filter element, and a sealing cover connected to the filter element, and the drainage section comprises a drainage pipe.

2. The device for increasing the thickener concentration according to claim 1, characterized in that: The sealing cover is arranged at one end of the filtering section, and the sealing cover is threadedly connected to the filter element.

3. The device for increasing the thickener concentration according to claim 2, characterized in that: The inner side of the end of the filter element is provided with a thread, and the sealing cover is connected with the filter element through the thread provided on the outer side of the inner ring.

4. The device for increasing the thickener concentration according to claim 3, characterized in that: The rear end of the porous pipe is connected to one end of the drainage pipe.

5. The device for increasing the thickener concentration according to claim 4, characterized in that: The other end of the drainage pipe is communicated with a hole on the side wall of the thickening layer of the thickener.

6. The device for increasing the thickener concentration according to claim 5, characterized in that: The outer diameter of the drain pipe is equal to the outer diameter of the sealing cover.

7. The device for increasing the thickener concentration according to claim 6, characterized in that: The outer diameter of the sealing cover is equal to the outer diameter of the filter screen.

8. The device for increasing the thickener concentration according to claim 6, characterized in that: The inner diameter of the drainage pipe is equal to the outer diameter of the porous pipe.

9. The device for increasing thickener concentration according to claim 1, characterized in that: The plurality of filter tubes are arranged in two layers on the thickening layer side wall of the thickener.

10. The device for increasing thickener concentration according to claim 1, characterized in that: Each layer of the filter tubes on the side wall of the thickening layer of the thickener is arranged in a ring shape, and the angle between adjacent filter tubes is 60°.

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