Efficient slurry filtering device for quartz sand washing

Abstract

The efficient slurry filtering device for quartz sand washing comprises a drainage pipeline, a filter bed and a high-pressure spraying mechanism, the drainage pipeline is used for conveying slurry, a slurry outlet of the drainage pipeline is located over the filter bed so that the slurry can be laid on the filter bed, and the high-pressure spraying mechanism is located below the filter bed so that the filter bed can be cleaned; the filter bed comprises a fixing support, an upper supporting roller, a guide roller, a lower supporting roller and filter cloth, the two sides of the upper supporting roller are connected with the upper end of the fixing support, the two sides of the guide roller are connected with the tail end of the fixing support, the two sides of the lower supporting roller are connected with the lower end of the fixing support, and the filter cloth is arranged around the upper supporting roller, the guide roller and the lower supporting roller and can rotate. Under the action of gravity, clay falls off from the filter cloth, and the filter cloth is washed through the high-pressure spraying mechanism after rotating, so that the filter cloth is washed clean. In this way, clay in the mud can be rapidly separated. The water content of the separated clay is greatly reduced, and the clay is relatively loose, so that the clay can be conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand processing technology, and in particular to a high-efficiency mud filtration device for quartz sand washing. Background Technology

[0002] Quartz sand has various uses, one of which is as a fracturing proppant in oil. When used as a fracturing proppant in oil, quartz sand has strict requirements regarding particle size. Therefore, it needs to be washed and screened for grading. Screening involves flushing the sand through sieves of different mesh sizes to obtain quartz sand with different mesh counts. During screening, quartz sand of different mesh counts and drilling mud also enter the water flow, forming a mud-slurry. After treatment, the quartz sand in the mud-slurry is recovered. The remaining mud is rich in clay and cannot be filtered through sieves. Natural settling is generally used to treat the mud, but this method has two drawbacks: the settling time is relatively long, and the clay accumulated at the bottom is difficult to clean. Utility Model Content

[0003] In view of this, it is necessary to provide a high-efficiency mud filtration device for washing quartz sand to quickly separate clay from mud.

[0004] A high-efficiency slurry filtration device for washing quartz sand includes a diversion pipe, a filter bed, and a high-pressure spraying mechanism. The diversion pipe is used to transport slurry, and the slurry outlet of the diversion pipe is located directly above the filter bed to spread the slurry onto the filter bed. The high-pressure spraying mechanism is located below the filter bed to clean the filter bed. The filter bed includes a fixed support, an upper support roller, a guide roller, a lower support roller, and a filter cloth. The two sides of the upper support roller are connected to the upper end of the fixed support, the two sides of the guide roller are connected to the end of the fixed support, and the two sides of the lower support roller are connected to the lower end of the fixed support. The filter cloth is arranged around the upper support roller, the guide roller, and the lower support roller and is rotatable.

[0005] Preferably, the high-pressure spraying mechanism includes a support plate, a spray pipe, and several nozzles. The upper end of the support plate is connected to a fixed bracket, and both ends of the spray pipe are mounted on the support plate. The nozzles are evenly distributed on the spray pipe and face the lower filter cloth to rinse the filter cloth.

[0006] Preferably, the filter bed further includes a tensioning mechanism to tension the filter cloth. The tensioning mechanism includes a tensioning support, a cylinder, a movable support, and a tensioning roller. The lower end of the tensioning support is connected to a fixed support, the fixed end of the cylinder is connected to the tensioning support, and the telescopic end of the cylinder is connected to the movable support to drive the movable support to move. The movable support is engaged with the fixed support, and both sides of the tensioning roller are fixedly connected to the movable support to drive the movable support to move.

[0007] Preferably, the high-efficiency mud filtration device for washing quartz sand further includes a scraper, which is disposed at the tail end of the filter bed and tangent to the guide roller to separate the clay on the filter bed.

[0008] Preferably, the filter bed further includes a drive motor, which is connected to a fixed bracket, and the drive motor shaft is chain-driven to the guide roller shaft to drive the guide roller to rotate.

[0009] Preferably, the lower support roller adjacent to the guide roller is located in front of the guide roller so that the filter cloth shrinks as it passes through the guide roller.

[0010] Beneficial Effects: In use, the high-efficiency mud filtration device for quartz sand washing of this invention first spreads the mud slurry onto the filter cloth of the filter bed through a diversion pipe. As the filter cloth moves, the clay and water in the mud gradually separate. When the filter cloth passes the guide roller, the clay falls off the filter cloth under gravity. After the filter cloth rotates, it is washed again by a high-pressure spray mechanism, thus cleaning the filter cloth. This method can quickly separate the clay from the mud. The separated clay has a significantly reduced water content and is relatively loose, making it easy to clean. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the high-efficiency mud filtration device for quartz sand washing according to the present invention, taken at a preferred angle.

[0012] Figure 2 This is a schematic diagram of the structure of the high-efficiency mud filtration device for quartz sand washing according to this utility model from another preferred angle.

[0013] Figure 3 for Figure 2 A partial structural diagram.

[0014] In the figure: 10, high-efficiency mud filtration device for quartz sand washing; 20, diversion pipe; 30, filter bed; 301, fixed support; 302, upper support roller; 303, guide roller; 304, lower support roller; 305, filter cloth; 40, high-pressure spraying mechanism; 401, support plate; 402, spraying pipe; several nozzles; 50, tensioning mechanism; 501, tensioning support; 502, cylinder; 503, moving support; 504, tensioning roller; 60, scraper; 70, drive motor. Detailed Implementation

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0017] Please refer to Figures 1 to 3 A high-efficiency slurry filtration device 10 for washing quartz sand includes a diversion pipe 20, a filter bed 30, and a high-pressure spraying mechanism 40. The diversion pipe 20 is used to transport slurry, and the slurry outlet of the diversion pipe 20 is located directly above the filter bed 30 to spread the slurry onto the filter bed 30. The high-pressure spraying mechanism 40 is located below the filter bed 30 to clean the filter bed 30. The filter bed 30 includes a fixed support 301, an upper support roller 302, a guide roller 303, a lower support roller 304, and a filter cloth 305. The two sides of the upper support roller 302 are connected to the upper end of the fixed support 301, the two sides of the guide roller 303 are connected to the end of the fixed support 301, and the two sides of the lower support roller 304 are connected to the lower end of the fixed support 301. The filter cloth 305 is arranged around the upper support roller 302, the guide roller 303, and the lower support roller 304 and is rotatable.

[0018] The filter bed 30 of this invention is used to separate clay from mud. After the mud is poured out through the drainage pipe 20, the filter cloth 305, with its large area, allows the mud to spread out fully, thus achieving thorough filtration. The high-pressure spray mechanism 40 is used to rinse the filter bed 30.

[0019] The filter cloth 305 of this invention is used to filter clay from mud. During rotation, the filter cloth 305 provides sufficient time for the clay in the mud to separate. Furthermore, during the rotation, the clay, due to inertia and gravity, can fall off the filter bed 30, thus enabling continuous mud processing. After rotation, the filter cloth 305 is washed by a high-pressure washing mechanism, allowing for repeated use. It should be noted that the clay content in the water used to wash the filter cloth 305 is significantly lower than that in the mud. A flocculant can be added subsequently to further separate the clay from the washing water, allowing the washing water to be recycled.

[0020] In a preferred embodiment, the high-pressure spraying mechanism 40 includes a support plate 401, a spray pipe 402, and a plurality of nozzles 403. The upper end of the support plate 401 is connected to a fixed bracket 301. The two ends of the spray pipe 402 are mounted on the support plate 401. The nozzles 403 are evenly distributed on the spray pipe 402 and face the lower filter cloth 305 to rinse the filter cloth 305.

[0021] After the filter cloth 305 rotates, most of the clay adhering to the filter cloth 305 is located below the filter cloth 305. Under the action of high pressure spraying, the clay can be washed away, keeping the filter cloth 305 clean and making it easy to continue to filter clay after subsequent rotations.

[0022] The filter cloth 305 performs better in drainage and rinsing when it is under tension than when it is under tension. However, the filter cloth 305 will gradually loosen as the equipment is running.

[0023] Therefore, in a preferred embodiment, the filter bed 30 further includes a tensioning mechanism 50 to tension the filter cloth 305. The tensioning mechanism 50 includes a tensioning support 501, a cylinder 502, a movable support 503, and a tensioning roller 504. The lower end of the tensioning support 501 is connected to the fixed support 301. The fixed end of the cylinder 502 is connected to the tensioning support 501. The telescopic end of the cylinder 502 is connected to the movable support 503 to drive the movable support 503 to move. The movable support 503 is engaged with the fixed support 301. Both sides of the tensioning roller 504 are fixedly connected to the movable support 503 to drive the movable support 503 to move.

[0024] When in use, the tensioning mechanism 50 moves the tensioning roller 504 along the front-to-back direction of the fixed bracket 301, changing the distance between the tensioning roller 504 and the lower support roller 304, thereby adjusting the tension of the filter cloth 305. The cylinder 502 keeps the filter cloth 305 taut, thus enabling better filtration of the slurry.

[0025] In actual operation, due to the stickiness of clay, a lot of clay will still adhere to the filter cloth 305 after it rotates, resulting in the rinse water containing a lot of clay. This will further increase the amount of flocculant used and prolong the settling time of the rinse water.

[0026] Therefore, in a preferred embodiment, the high-efficiency slurry filtration device 10 for washing quartz sand further includes a scraper 60, which is disposed at the tail end of the filter bed 30 and tangential to the guide roller 303 to separate the clay on the filter bed 30. It should be noted that the scraper 60 must not directly contact the filter cloth 305 to prevent the scraper 60 from cutting the filter cloth 305.

[0027] The filter cloth 305 can be driven by the upper support roller 302, the lower support roller 304, and the guide roller 303, rotating by friction. Considering practical applications, in a preferred embodiment, the filter bed 30 further includes a drive motor 70, which is connected to the fixed bracket 301. The rotating shaft of the drive motor 70 is chain-driven to the rotating shaft of the guide roller 303 to drive the guide roller 303 to rotate.

[0028] To better utilize gravity for clay separation, in a preferred embodiment, the lower support roller 304, adjacent to the guide roller 303, is located in front of the guide roller 303, so that the filter cloth 305 shrinks as it rotates past the guide roller 303. Thus, the filter cloth 305 forms an acute angle before and after rotation, which is more conducive to clay separation.

[0029] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A high-efficiency slurry filtration device for washing quartz sand, characterized in that: The system includes a drainage pipe, a filter bed, and a high-pressure spraying mechanism. The drainage pipe is used to transport slurry, and its outlet is located directly above the filter bed to spread the slurry onto it. The high-pressure spraying mechanism is located below the filter bed to clean it. The filter bed includes a fixed support, an upper support roller, a guide roller, a lower support roller, and a filter cloth. The two sides of the upper support roller are connected to the upper end of the fixed support, the two sides of the guide roller are connected to the end of the fixed support, and the two sides of the lower support roller are connected to the lower end of the fixed support. The filter cloth is arranged around the upper support roller, the guide roller, and the lower support roller and is rotatable.

2. The high-efficiency slurry filtration device for quartz sand washing as described in claim 1, characterized in that: The high-pressure spraying mechanism includes a support plate, a spray pipe, and several nozzles. The upper end of the support plate is connected to a fixed bracket, and both ends of the spray pipe are mounted on the support plate. The nozzles are evenly distributed on the spray pipe and face the lower filter cloth to rinse the filter cloth.

3. The high-efficiency slurry filtration device for quartz sand washing as described in claim 1, characterized in that: The filter bed also includes a tensioning mechanism to tension the filter cloth. The tensioning mechanism includes a tensioning support, a cylinder, a movable support, and a tensioning roller. The lower end of the tensioning support is connected to a fixed support, the fixed end of the cylinder is connected to the tensioning support, and the telescopic end of the cylinder is connected to the movable support to drive the movable support to move. The movable support is engaged with the fixed support, and both sides of the tensioning roller are fixedly connected to the movable support to drive the movable support to move.

4. The high-efficiency slurry filtration device for quartz sand washing as described in claim 1, characterized in that: The high-efficiency mud filtration device for quartz sand washing also includes a scraper, which is set at the tail end of the filter bed and tangent to the guide roller to separate the clay on the filter bed.

5. The high-efficiency slurry filtration device for quartz sand washing as described in claim 1, characterized in that: The filter bed also includes a drive motor, which is connected to a fixed bracket. The drive motor's shaft is chain-driven to the guide roller's shaft to drive the guide roller to rotate.

6. The high-efficiency slurry filtration device for quartz sand washing as described in claim 1, characterized in that: The lower support roller adjacent to the guide roller is located in front of the guide roller so that the filter cloth shrinks as it passes the guide roller.

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