High-purity quartz sand sorting device and sorting and cleaning system

Abstract

The high-purity quartz sand sorting device comprises a sorting chamber and a separating chamber from top to bottom, the upper end of the sorting chamber is provided with a first feeding port, the lower end of the sorting chamber is communicated with the upper end of the separating chamber, the separating chamber is provided with a first shutoff valve, and the first shutoff valve is communicated with the separating chamber. The cross-sectional area of the sorting chamber is larger than that of the separating chamber. The utility model provides the sorting and cleaning system for the high-purity quartz sand, which comprises the sorting device for the high-purity quartz sand and the filtering device. The sorting device for the high-purity quartz sand, provided by the utility model, can be used for accurately sorting the quartz sand and thoroughly separating each layer of the quartz sand. According to the sorting and cleaning system for the high-purity quartz sand, provided by the utility model, the sorting liquid can be recycled and reused, and the loss of the sorting liquid is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sorting and cleaning of high-purity quartz sand, and in particular relates to a sorting device and a sorting and cleaning system for high-purity quartz sand. Background Art

[0002] High-purity quartz sand is a critical upstream raw material for industries such as solar photovoltaics, fiber optic communications, semiconductors, microchips, and electro-optical sources, occupying a strategically important position in high-tech industries. High-purity quartz sand can contain defects such as gas-liquid inclusions and impurities. These defects have a density very similar to that of normal sand. Current quartz sand separation methods, including magnetic separation, flotation, and electrostatic separation, primarily remove other substances from the sand and are incapable of separating the defects.

[0003] Gravity separation is a commonly used technology in mineral processing. A variety of gravity separation equipment is available, including shaking tables, spiral chutes, horizontal centrifuges, suspended cone concentrators, and Nelson machines. However, these devices are typically used to separate raw ores such as iron ore, ilmenite, and tungsten ore. They are suitable for separating minerals with large density differences, such as recovering tungsten, gold, and quartz sand from gold flotation tailings. Currently, gravity separation equipment is unable to separate defective sand, and there are no reports on the separation of defective sand from quartz sand. Utility Model Content

[0004] In view of this, the utility model provides a high-purity quartz sand sorting device and a high-purity quartz sand sorting and cleaning system.

[0005] Specifically, according to the first aspect of the present utility model, a high-purity quartz sand sorting device is provided, which includes a sorting chamber and a separation chamber from top to bottom, wherein a first feed port is provided at the upper end of the sorting chamber, the lower end of the sorting chamber is connected to the upper end of the separation chamber, and the separation chamber is provided with a first shut-off valve, and the cross-sectional area of the sorting chamber is larger than the cross-sectional area of the separation chamber.

[0006] In some embodiments, the cross-sectional area of the sorting chamber is 16 to 36 times the cross-sectional area of the separation chamber; and / or the height of the sorting chamber is greater than the width; and / or the height of the sorting chamber is 4 to 6 times the width; and / or the height of the sorting chamber is 6 to 10 times the height of the separation chamber.

[0007] In some embodiments, the sorting device further includes a liquid storage chamber for receiving the solid-liquid mixture separated in the separation chamber; the liquid storage chamber is communicated with the lower end of the separation chamber.

[0008] In some embodiments, the volume of the liquid storage chamber is smaller than the volume of the sorting chamber.

[0009] The high-purity quartz sand sorting device provided by the utility model includes a sorting chamber and a separation chamber. The cross-sectional area of the sorting chamber is larger than the cross-sectional area of the separation chamber, so that the solid-liquid mixture can be separated slowly when flowing from the sorting chamber into the separation chamber, thereby improving the separation accuracy and further realizing the sorting of quartz sands with similar density.

[0010] According to a second aspect of the present invention, a high-purity quartz sand sorting and cleaning system is provided, which includes the high-purity quartz sand sorting device and the filtering device according to the first aspect of the present invention.

[0011] In some embodiments, the filtration device includes a filter frame for filtering the solid-liquid mixture entering the liquid storage chamber, and the filter frame is arranged in the liquid storage chamber; and / or, the sorting and cleaning system also includes a liquid guide tube for guiding the liquid filtered by the filtration device, and the liquid guide tube is connected to the lower end of the liquid storage chamber, and a second shut-off valve is provided in the liquid guide tube for controlling the outflow of the liquid.

[0012] In some embodiments, the liquid guide tube is provided with a second density measuring component for measuring the density of the liquid flowing out of the liquid storage chamber; and / or, the sorting and cleaning system further includes a liquid separation chamber for receiving the liquid introduced through the liquid guide tube, the upper end of the liquid separation chamber is connected to the free end of the liquid guide tube, wherein the liquid separation chamber is provided with a filter plate for filtering the liquid entering the liquid separation chamber, and the liquid separation chamber is provided with a first pressure regulating port for regulating the pressure in the liquid separation chamber.

[0013] In some embodiments, the sorting and cleaning system further includes a first recovery pipe for draining the liquid in the liquid guide tube, and the first recovery pipe is connected to the liquid guide tube; and / or, the sorting and cleaning system further includes a return pipe for draining the liquid in the liquid separation chamber, the return pipe is connected to the lower end of the liquid separation chamber, and a third shut-off valve is provided in the return pipe for controlling the outflow of the liquid.

[0014] In some embodiments, the return liquid pipe and / or the liquid separation chamber are provided with a third density measuring component for measuring the density of the liquid in the liquid separation chamber or the density of the liquid flowing out of the liquid separation chamber; and / or the free end of the return liquid pipe is connected to the upper end of the liquid storage chamber, wherein the liquid storage chamber is provided with a second pressure regulating port for adjusting the pressure of the liquid storage chamber.

[0015] In some embodiments, the separation and cleaning system further includes a second recovery pipe for draining the liquid in the liquid separation chamber, and the second recovery pipe is connected to the liquid return pipe.

[0016] The high-purity quartz sand sorting and cleaning system provided by the utility model realizes the recycling and reuse of sorting liquid after sorting through the filtering device, thereby reducing the loss of sorting liquid and effectively lowering the cost of sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other implementation plans can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of a sorting device according to some embodiments of the present invention is shown.

[0019] Figure 2 A schematic diagram of a sorting and cleaning system according to some embodiments of the present invention is shown.

[0020] Reference numerals:

[0021] 1-sorting chamber, 11-first feed port, 12-stirring assembly, 13-temperature measuring assembly, 14-first density measuring assembly; 2-separation chamber, 21-first shut-off valve; 3-liquid storage chamber, 31-upper part, 32-lower part, 33-filter frame, 34-second feed port, 35-return liquid port, 36-second pressure regulating port, 37-second pressure regulating valve, 38-first fastener, 39-first liquid outlet; 4-liquid guide tube, 41-second shut-off valve; 5-liquid separation chamber, 51-upper part, 52-lower part, 53-filter plate, 54-second fastener, 55-first pressure regulating port, 56-first pressure regulating valve, 57-third density measuring assembly; 6-return liquid pipe, 61-second liquid outlet, 62-third shut-off valve, 63-fourth shut-off valve. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the present invention in conjunction with the embodiments and drawings of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by a person of ordinary skill in the art are within the scope of protection of the present invention.

[0023] According to the first aspect of the present invention, Figure 1As shown, a high-purity quartz sand sorting device is provided, which is characterized in that it includes a sorting chamber 1 and a separation chamber 2 from top to bottom, wherein a first feed port 11 is provided at the upper end of the sorting chamber 1, the lower end of the sorting chamber 1 is connected to the upper end of the separation chamber 2, and the separation chamber 2 is provided with a first shut-off valve 21, and the cross-sectional area of the sorting chamber 1 is larger than the cross-sectional area of the separation chamber 2.

[0024] In the present invention, "upper end" may refer to the upper end surface or the side surface of the upper part. "lower end" may refer to the lower end surface or the side surface of the lower part.

[0025] In the high-purity quartz sand sorting device, the sorting chamber 1 is configured to sort quartz sand; the separation chamber 2 is configured to spatially separate each layer of the solid-liquid mixture sorted in the sorting chamber 1; the first feed port 11 is configured to feed the required material into the sorting chamber 1, which material can be quartz sand to be sorted, a sorting liquid (the sorting liquid is a liquid containing at least one of a heavy liquid and / or ethanol and water, and the heavy liquid is a combination of one or more of polysodium tungstate, polylithium tungstate, dibromomethane, tribromomethane, tribromoethane, tetrabromoethane, diiodomethane, and dichloroethane. Of course, the heavy liquid can also use other types of heavy liquids known in the art that are suitable for this application, and this application does not make further restrictions on this), and a diluent for adjusting the density of the sorting liquid, such as ethanol and / or water; the first shut-off valve 21 provided in the separation chamber 2 is configured to control the outflow of the solid-liquid mixture in the separation chamber 2. It can be understood that after the stratification of the mixture of quartz sand and sorting liquid is achieved in the sorting chamber 1, the first shut-off valve 21 can be opened first, so that the solid-liquid mixture in the sorting chamber 1 can pass through the separation chamber 2 to achieve separation of each layer of the solid-liquid mixture. The cross-sectional area of the sorting chamber 1 is larger than the cross-sectional area of the separation chamber 2, which can make the solid-liquid mixture separate slowly when it flows from the sorting chamber into the separation chamber, thereby improving the separation accuracy and further achieving the sorting of quartz sands of similar density.

[0026] In some specific embodiments, the opening of the first shut-off valve 21 can be adjusted. Thus, by controlling the opening of the first shut-off valve 21, during the separation process of quartz sand, the first shut-off valve 21 can be fully opened at the beginning to discharge most of the solid-liquid mixture layer, and then the shut-off valve can be gradually closed to continuously reduce the flow rate of the remaining small portion of the solid-liquid mixture layer, thereby further improving the separation accuracy.

[0027] In some embodiments, along the height direction of the sorting chamber 1 and the separation chamber 2, the sorting chamber 1 and the separation chamber 2 have the same cross-sectional shape, and the cross-sectional area of the sorting chamber 1 is larger than the cross-sectional area of the separation chamber 2, thereby making the volume of each layer of solid-liquid mixture entering the separation chamber 2 from the sorting chamber 1 smaller and the path longer. First, the reduction in cross-section can shorten the time for the first shut-off valve 21 to start or close the separation, making the entire separation more precise; secondly, the length of the path can make the first throttle valve 21 control the entire separation process for a longer time, and the dividing line of each layer of solid-liquid mixture is clearer, making the accuracy of the entire separation process higher.

[0028] In some embodiments, the sorting chamber 1 and the separation chamber 2 have different sizes and cross-sectional shapes in their height directions, so it is necessary to ensure that at the connection part between the sorting chamber 1 and the separation chamber 2, the cross-sectional area of the sorting chamber 1 is larger than the cross-sectional area of the separation chamber 2 to ensure the slow outflow of the solid-liquid mixture in the sorting chamber 1.

[0029] In a preferred embodiment, the cross-sectional area of the sorting chamber 1 is 16 to 36 times the cross-sectional area of the separation chamber 2, for example, 16 times, 20 times, 22 times, 24 times, 26 times, 28 times, 30 times, 32 times, 34 times, or 36 times. Due to the reduction in cross-sectional area, the height path of the same volume of liquid in the separation chamber will increase compared to the height of the liquid in the sorting chamber, which can shorten the time for the first shut-off valve 21 to start or close the separation, making the entire separation more accurate, but at the same time it will also increase the separation time; therefore, if the cross-sectional area of the separation chamber 2 is too small, the sorting time will be too long, increasing the time cost of sorting. Limiting the ratio of the cross-sectional area of the sorting chamber to the separation chamber within the above range can not only improve the separation accuracy, but also ensure the separation efficiency.

[0030] In the above-described high-purity quartz sand sorting apparatus, the height of sorting chamber 1 is greater than its width. This design facilitates better separation of the upper, middle, and / or lower layers of sand in the height direction, reduces mutual interference between adjacent layers, and effectively separates defective sand. In a preferred embodiment, the height of sorting chamber 1 is 4 to 6 times its width, which effectively separates defective sand.

[0031] In some embodiments, the sorting chamber 1 is a cylindrical structure or a conical structure. Generally, the cross-sectional area of the sorting chamber is the average cross-sectional area. This relatively smooth structure can reduce or even avoid the residue of quartz sand on the wall of the sorting chamber, thereby reducing the occurrence of quartz sand hanging on the wall.

[0032] In some embodiments, the bottom of the sorting chamber 1 is an inverted conical structure, so that there is no dead corner in the outflow process of the solid-liquid mixture in the sorting chamber 1, and the solid-liquid mixture in the sorting chamber 1 can flow out completely.

[0033] In some embodiments, the height of the sorting chamber 1 is 6 to 10 times the height of the separation chamber 2. Controlling the ratio of the height of the sorting chamber to the height of the separation chamber within the above range can prevent the height of the entire sorting device from being too high, thereby facilitating operation, while also ensuring accurate separation of the stratified liquids.

[0034] In some embodiments, the separation chamber 2 is a cylindrical structure, and the diameter of the separation chamber 2 may be 30 to 60 mm, for example, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm or 60 mm.

[0035] In some embodiments, a temperature measuring component 13 is further provided in the sorting chamber 1, and the temperature measuring component 13 is snapped into the sorting chamber 1. Of course, the temperature measuring component 13 can also be provided in the sorting chamber 1 in other ways, and the present utility model does not further limit this. The temperature measuring component 13 in the sorting chamber 1 is configured to monitor the temperature change of the solid-liquid mixture in the sorting chamber 1 to avoid excessive temperature changes, which will cause the density of the sorting liquid to also change significantly, affecting the stratification of the solid-liquid mixture and affecting the final sorting accuracy. Through real-time temperature monitoring and feedback, the density of the sorting liquid can be controlled with high precision, thereby making the final sorting accuracy high. As for the specific position, those skilled in the art can make a selection as needed.

[0036] In some embodiments, a first density measuring assembly 14 is further provided in the sorting chamber 1. In some embodiments, the first density measuring assembly 14 is snap-fitted into the sorting chamber 1. Of course, the first density measuring assembly 14 may also be provided in the sorting chamber 1 in other ways, and the present invention does not further limit this. The first density measuring assembly 14 in the sorting chamber 1 is configured to monitor the density of the solid-liquid mixture in the sorting chamber 1. The specific location for the first density measurement can be selected by those skilled in the art as needed.

[0037] In some embodiments, a stirring assembly 12 is further provided in the sorting chamber 1, which is configured to stir the solid-liquid mixture in the sorting chamber 1. In some embodiments, the stirring assembly 12 is snapped into the sorting chamber 1. Of course, the stirring assembly 12 can also be provided in the sorting chamber 1 in other ways, and the present invention does not further limit this. In some embodiments, the stirring head of the stirring assembly 12 is provided on the center line of the sorting chamber 1 to avoid eccentric stirring, which causes the sorting device of high-purity quartz sand to shake greatly and affects the stratification of the solid-liquid mixture. In some embodiments, the stirring assembly 12 is provided at the center of the sorting chamber 1. In some embodiments, the stirring assembly 12 is provided at 1 / 3 from the bottom to the top of the sorting chamber 1, mainly to ensure that when there is a small amount of defective sand floating on the upper layer, the diluted sorting liquid can be stirred smoothly to make it uniform, and such a design can reduce the loss of the stirring motor.

[0038] In some embodiments, the high-purity quartz sand sorting device further includes a liquid storage chamber 3 connected to the lower end of the separation chamber 2 , which is configured to receive the solid-liquid mixture separated from the separation chamber 2 .

[0039] In some embodiments, the volume of liquid storage chamber 3 is smaller than that of sorting chamber 1. This prevents the solid-liquid mixture of sorting liquid and quartz sand in sorting chamber 1 from flowing completely into liquid storage chamber 3 after the first shut-off valve 21 is opened. This ensures that defective sand floating on the upper layer does not flow into liquid storage chamber 3, thereby improving the separation of defective sand and high-purity quartz sand and preventing solid-liquid mixture in non-target layers from flowing into liquid storage chamber 3 due to operational errors. In a preferred embodiment, the volume of liquid storage chamber 3 is 20-40% smaller than that of sorting chamber 1; for example, it can be 20%, 25%, 30%, 35%, and 40%.

[0040] During the quartz sand sorting process, the sorting chamber 1 is maintained at a constant temperature. In some embodiments, the walls of the sorting chamber 1 are provided with a cavity configured to maintain the temperature of the sorting chamber 1. In some embodiments, the temperature of the sorting chamber 1 is maintained at a constant temperature by passing a constant temperature liquid into the cavity. Of course, the temperature of the sorting chamber 1 can also be maintained at a constant temperature by other means, which are not further limited by the present invention.

[0041] In the present invention, the liquid storage chamber 3 is used to store each layer of the separated solid-liquid mixture. In some embodiments, the liquid storage chamber 3 is provided with a first liquid outlet 39 for discharging the solid-liquid mixture therein. In some embodiments, the first liquid outlet 39 is provided at the bottom of the liquid storage chamber 3 to facilitate the outflow of the solid-liquid mixture. In some embodiments, the first liquid outlet 39 is provided on the side of the liquid storage chamber 3 near the bottom. Those skilled in the art can, as needed, dispose the first liquid outlet 39 at any location that facilitates the outflow of the solid-liquid mixture.

[0042] In some embodiments, the material of the sorting chamber 1 is any material that will not be dissolved by the liquid entering therein, such as heavy liquid and / or ethanol. Furthermore, the material of the sorting chamber 1 is visible, so as to facilitate the observation of the movement trajectory of the quartz sand in the heavy liquid. In a preferred embodiment, the material of the sorting chamber 1 can be borosilicate glass or quartz glass. In some embodiments, the material of the sorting chamber 1 is divided into two layers, the outer layer material is metal, and the inner layer material is any material that will not be dissolved in the liquid entering therein, such as heavy liquid and / or ethanol, such as quartz, polytetrafluoroethylene, acrylonitrile-styrene-butadiene copolymer (ABS resin), for example (polytetrafluoroethylene). Of course, the material of the sorting chamber 1 is not limited to this, and any material suitable for the sorting chamber 1 of the present invention can be used in the present invention, and those skilled in the art can select as needed.

[0043] In some embodiments, the separation chamber 2 , the liquid storage chamber 3 , and the first shut-off valve 21 may be made of the same material as the sorting chamber 1 .

[0044] In some embodiments, the first shut-off valve 21 may be wrapped or wound with polytetrafluoroethylene or rubber to form a soft seal, thereby preventing the dripping of liquid and achieving a good solid-liquid sealing effect.

[0045] In the above-mentioned high-purity quartz sand sorting device, the sorting chamber 1, the separation chamber 2 and the liquid storage chamber 3 can be formed as one piece, or can be connected together by means of threads, snaps, etc. The present invention does not impose any further restrictions on this, as long as it can ensure that the material can flow conveniently and smoothly therebetween.

[0046] When using a high-purity quartz sand sorting device for sorting, the required amount of quartz sand and sorting liquid are fed into the sorting chamber 1 through the first feed port 11. At this point, the first shutoff valve 21 is closed, and the sorting operation is completed in the space above the first shutoff valve 21. After the solid-liquid mixture is separated into layers, the first shutoff valve 21 is opened, allowing the lower layer of the solid-liquid mixture to flow into the liquid storage chamber 3. Once the lower layer of the solid-liquid mixture has completely entered the liquid storage chamber 3, the first shutoff valve 21 is closed, and the lower layer of the solid-liquid mixture is discharged through the first liquid outlet 39. This operation is repeated to ultimately achieve spatial separation of the upper, middle, and lower layers of the solid-liquid mixture.

[0047] Figure 1 A schematic diagram of a high-purity quartz sand separation device according to some embodiments of the present invention is shown. Figure 1In the invention, the sorting device for high-purity quartz sand includes a sorting chamber 1, a separation chamber 2 and a liquid storage chamber 3. The upper end of the sorting chamber 1 is provided with a first feed port 11, and the lower end is connected to the upper end of the separation chamber 2. The lower end of the separation chamber 2 is connected to the liquid storage chamber 3. The sorting chamber 1 is provided with a stirring component 12, a temperature measuring component 13 and a first density measuring component 14. The separation chamber 2 is provided with a first shut-off valve 21. The heights of the sorting chamber 1 and the separation chamber 2 are both greater than the widths. The cross-sectional area of the sorting chamber 1 is greater than the cross-sectional area of the separation chamber 2. The liquid storage chamber 3 includes a second shut-off valve 41 and a first liquid outlet 39, and preferably also includes a second feed port 34.

[0048] In use Figure 1 When sorting high-purity quartz sand using a separation device, the required amount of quartz sand and sorting liquid are fed into the separation chamber 1 through the first feed port 11. At this point, the first shutoff valve 21 is closed, and sorting is completed in the separation chamber 1 and the portion of the separation chamber 2 located above the first shutoff valve 21. After sorting is complete, the first shutoff valve 21 is opened, and each layer of the sorted solid-liquid mixture passes through the separation chamber 2 and into the liquid storage chamber 3. The solid-liquid mixture is then discharged through the first liquid outlet 39 of the liquid storage chamber 3 for further processing. The liquid inlet 31 can be used to rinse quartz sand adhering to the liquid storage chamber 3.

[0049] In some embodiments, when using Figure 1 When the high-purity quartz sand is sorted by the sorting device, the sorting liquid is fed into the sorting chamber 1 through the first feed port 11. At this time, the first shut-off valve 21 is in the open state, and the sorting liquid will fill the liquid storage chamber 3, the separation chamber 2, and about 40% to 80% of the volume of the sorting chamber 1. Then, the required amount of quartz sand is added through the first feed port 11. Since the density of the sorting liquid is different from that of the quartz sand at this time, the quartz sand will all float on the top of the sorting liquid or sink to the bottom of the sorting liquid. Then, a diluent such as ethanol, water, etc. is added through the first feed port 11, and the density of the sorting liquid is slowly adjusted to separate the quartz sand into layers. At this time, the first shut-off valve 21 is closed to sort the upper and lower layers of sand. Each layer of solid-liquid mixture after sorting will be discharged in turn through the first liquid outlet 39 for the next step of processing.

[0050] According to a second aspect of the present invention, a high-purity quartz sand sorting and cleaning system is provided. The high-purity quartz sand sorting and cleaning system comprises: a high-purity quartz sand sorting device and a filtering device according to the first aspect of the present invention.

[0051] In the present invention, the above description of the high-purity quartz sand sorting device is also applicable to the high-purity quartz sand sorting and cleaning system, which will not be described in detail here.

[0052] In some embodiments, the height of the liquid storage chamber 3 is less than its width, which can reduce the height of the device and facilitate operation. In some embodiments, the liquid storage chamber 3 is a cylindrical structure.

[0053] In some embodiments, the liquid storage chamber 3 includes a separable upper portion 31 and a lower portion 32. In some embodiments, the upper portion 31 and the lower portion 32 of the liquid storage chamber 3 are secured together by a first fastener 38, for example, by securing the upper portion 31 and the lower portion 32 together with the first fastener 38. Other fastening methods may also be used, and this invention is not further limited thereto. The first fastener 38 is made of stainless steel.

[0054] In some embodiments, the upper and lower end surfaces of the liquid storage chamber 3 are both arc-shaped. This relatively smooth structure can reduce or even avoid the residue of quartz sand on the wall of the liquid storage chamber, thereby reducing the occurrence of wall hanging.

[0055] In some embodiments, the upper end of the liquid storage chamber 3 is further provided with a second feed port 34, which is configured to feed a cleaning liquid such as ethanol, water or recycled cleaning liquid to clean the quartz sand adhered to the separation liquid.

[0056] In some embodiments, the filtering device is a filtering frame 33 disposed in the liquid storage chamber 3 , and the filtering frame 33 is configured to filter and separate the solid-liquid mixture entering the liquid storage chamber 3 .

[0057] In some embodiments, the filter frame 33 is detachable. For example, the filter frame 33 can be arranged in the liquid storage chamber 3 by overlapping, clamping, bolting, etc.

[0058] In some specific embodiments, the liquid storage chamber 3 includes an upper portion 31 and a lower portion 32, and the filter frame 33 includes a frame ear extending outward, and the frame ear of the filter frame 33 is disposed between the upper portion 32 and the lower portion 32 of the liquid storage chamber 3;

[0059] Preferably, a flange is provided at the lower end of the liquid storage chamber 3, and the frame ears of the filter frame 33 are provided on the flange;

[0060] Preferably, the edges of the filter frame 33's lugs are equipped with sealing rings to ensure a good seal. This design allows for one-time solid-liquid separation, cleaning, and draining. During operation, the removable wall-mounted filter frame 33 can be removed by motorized rotation, allowing the separated solids to be easily removed. This is a simple and efficient operation, eliminating the need for manual scooping.

[0061] In some embodiments, the filter frame 33 is made of polytetrafluoroethylene with a mesh size of 400-600.

[0062] In some embodiments, the liquid storage chamber 3 also includes a liquid guide tube 4 connected to the lower end of the liquid storage chamber 3, and a second shut-off valve 41 is provided in the liquid guide tube 4, wherein the liquid guide tube 4 is configured to guide the liquid (which may contain a small amount of extremely fine sand) flowing out of the liquid storage chamber 3, and the second shut-off valve 41 is configured to control the outflow of the liquid.

[0063] In some embodiments, a second density measuring component is provided in the liquid conduit 4, wherein the second density measuring component is configured to measure the density of the liquid flowing out of the liquid storage chamber 3. In actual operation, if the density of the liquid measured by the second density measuring component reaches a certain threshold value, for example, it can be above 1.7g / mL, above 1.8g / mL, above 1.9g / mL, above 2.0g / mL, above 2.1g / mL, above 2.2g / mL, above 2.3g / mL, above 2.4g / mL, above 2.5g / mL, above 2.6g / mL; then the liquid can be directly discharged through the liquid conduit 4 to be reused for the sorting of quartz sand. If the density measured by the second density measuring component is lower than a certain threshold value, for example, it can be above 1.7g / mL, then filtration is performed again. Through the provision of the second density measuring component, the liquid in the recovered liquid storage chamber is treated in a more reasonable and controllable manner, so that the loss of the sorting liquid is lower, and it will not affect the subsequent sorting, thereby more effectively reducing the cost of sorting.

[0064] In some embodiments, the high-purity quartz sand sorting and cleaning system further includes a liquid separation chamber 5, the upper end of which is in communication with the free end of the liquid conduit 4. A filter device 53 is disposed in the liquid separation chamber 5, which may be a filter plate, a filter screen, a filter frame, or the like. A first pressure regulating port 55 is disposed on the liquid separation chamber 5. In this case, the first pressure regulating port 55 is configured to adjust the pressure in the liquid separation chamber 5 to a negative pressure, thereby allowing liquid flowing out of the liquid storage chamber 3 to enter the liquid separation chamber 5. The filter device 53 is configured to further filter the liquid entering the liquid separation chamber 5.

[0065] In some embodiments, the liquid separation chamber 5 includes a separable upper portion 51 and a lower portion 52. In some embodiments, the upper portion 51 and the lower portion 52 of the liquid separation chamber 5 are secured together by a second fastener 54, for example, by securing the flanges of the second fastener 54. Other methods of securing the two portions together are also possible and are not further limited in this disclosure. The second fastener 54 is made of stainless steel.

[0066] In some embodiments, the upper end surface of the liquid separation chamber 5 is arc-shaped, and the lower portion is an inverted conical structure.

[0067] In some embodiments, the filter device 53 is disposed in the lower portion 52 of the liquid separation chamber 5. In some embodiments, the filter device 53 is made of polytetrafluoroethylene, and the mesh size of the filter device 53 is 600-800.

[0068] In some embodiments, the sorting and cleaning system for high-purity quartz sand also includes a first recovery pipe connected to the liquid guide tube 4, wherein the first recovery pipe is configured to be used for connecting the liquid storage chamber 3 and the liquid separation chamber 5 at both ends of the liquid guide tube 4, respectively, and when the density of the liquid measured by the second density measurement component reaches a certain threshold, for example, it may be above 1.7 g / mL, the liquid is discharged for use in sorting the next batch of quartz sand.

[0069] In some embodiments, the sorting and cleaning system for high-purity quartz sand also includes a return pipe 6 connected to the lower end of the separation chamber 5, and a third shut-off valve 62 is provided in the return pipe 6, wherein the return pipe 6 is configured to discharge the liquid in the separation chamber 5, and the third shut-off valve 62 is configured to control the outflow of the liquid.

[0070] In some embodiments, a third density measuring component 57 is provided in the liquid return pipe 6 and / or the liquid separation chamber 5, wherein the third density measuring component 57 is configured to measure the density of the liquid flowing out of the liquid separation chamber 5. In actual operation, if the density of the liquid measured by the third density measuring component 57 reaches a certain threshold value, for example, it may be above 1.7 g / mL, the liquid can be directly discharged through the liquid return pipe 6 and reused for the sorting of the next batch of quartz sand. If the density measured by the third density measuring component 57 is lower than a certain threshold value, for example, it may be above 1.7 g / mL, it will continue to be used for cleaning quartz sand. Through the provision of the third density measuring component, the liquid in the recovered liquid storage chamber is treated in a more reasonable and controllable manner, so that the loss of the sorting liquid is lower, and it will not affect the subsequent sorting, thereby more effectively reducing the cost of sorting.

[0071] In some embodiments, the free end of the liquid return pipe 6 is connected to the upper end of the liquid storage chamber 3, wherein the liquid storage chamber 3 is provided with a second pressure regulating port 36. In this case, the second pressure regulating port 36 is configured to adjust the liquid storage chamber 3 to a negative pressure, so that the liquid flowing out of the liquid separation chamber 5 can enter the liquid storage chamber 3 for further use in cleaning the quartz sand.

[0072] In some embodiments, the sorting and cleaning system for high-purity quartz sand also includes a second recovery pipe connected to the return liquid pipe 6, wherein the second recovery pipe is configured to be connected to the liquid separation chamber 5 and the liquid storage chamber 3 at both ends of the return liquid pipe 6, and when the density of the liquid measured by the third density measuring component 57 reaches a certain threshold, for example, it may be above 1.7 g / mL, the liquid is discharged for use in sorting the next batch of quartz sand.

[0073] In the present invention, the liquid separation chamber 5 , the second shutoff valve 41 , and the third shutoff valve 62 can be made of the same material as the separation chamber 1 , and the second shutoff valve 41 and the third shutoff valve 62 have the same configuration as the first shutoff valve 21 .

[0074] When using a high-purity quartz sand sorting and cleaning system, the required amount of quartz sand and sorting liquid are fed into the sorting chamber 1 through the first feed port 11. At this point, the first shutoff valve 21 is closed, and sorting is completed in the space above the first shutoff valve 21. After sorting, the quartz sand forms strata in the sorting liquid due to density differences. The first shutoff valve 21 is opened, and the different layers of the solid-liquid mixture (sorting liquid and quartz sand) are separated through the separation chamber 2. The separated solid-liquid mixture then enters the liquid storage chamber 3 and passes through the filter frame 33. The solid quartz sand remains on the filter frame 33, and the filtered liquid flows into the lower part of the liquid storage chamber 3 and into the liquid conduit 4. At this point, the density of the liquid can be measured by the second density measurement assembly. If the density reaches a certain threshold, for example, above 1.7 g / mL, the second shutoff valve 41 can be opened, and the liquid can be directly discharged through the liquid conduit 4 for reuse in quartz sand sorting. If the measured density is lower than a certain threshold, for example, above 1.7 g / mL, filtration is performed again. At this point, the first pressure regulating valve 56 is opened, and the first pressure regulating port 55 is adjusted to a negative pressure in the liquid separation chamber 5. The second shutoff valve 41 is then opened, allowing the filtered liquid to flow through the liquid conduit 4 and into the liquid separation chamber. The filter device 53 in the liquid separation chamber 5 filters the liquid again to remove the fine sand (very fine sand). After the filtrate is completely filtered out, the first pressure regulating port 55 is used to adjust the pressure in the liquid separation chamber 5 to normal atmospheric pressure. The density of the filtrate is measured by a third density measuring assembly 57 provided in the liquid separation chamber 5 or in the liquid return pipe 6 connected to the lower end of the liquid separation chamber 5. If the density value measured by the third density measuring assembly 57 reaches a certain threshold value, for example, 1.7 g / mL or above, the third shutoff valve 62 is opened, and the liquid is directly discharged through the liquid return pipe 6 and reused for the next batch of quartz sand sorting. If the density value is below a certain threshold value, for example, 1.7 g / mL or above, the liquid is reintroduced into the liquid storage chamber 3 and reused for cleaning the quartz sand. At this time, open the second pressure regulating valve 37, adjust the second pressure regulating port 36 to a negative pressure in the liquid storage chamber 3, open the third shut-off valve 62, and the filtrate enters the liquid storage chamber 3 through the return pipe 6 to clean the quartz sand again.

[0075] Figure 2 A schematic diagram of a high-purity quartz sand separation and cleaning system according to some embodiments of the present invention is shown. Figure 2In the present invention, the high-purity quartz sand sorting device includes a sorting chamber 1, a separation chamber 2, a liquid storage chamber 3, a liquid guide tube 4, a liquid separation chamber 5, and a liquid return pipe 6. The upper end of the sorting chamber 1 is provided with a first feed inlet 11, and the lower end is connected to the upper end of the separation chamber 2. The lower end of the separation chamber 2 is connected to the upper end of the liquid storage chamber 3. The sorting chamber 1 is provided with an agitator 12, a temperature measuring component 13, and a first density measuring component 14. The sorting chamber 1 and the separation chamber 2 are both slender, and the cross-sectional area of the sorting chamber 1 is larger than the cross-sectional area of the separation chamber 2. The separation chamber 2 is provided with a first shut-off valve 21. The liquid storage chamber 3 includes a separable upper portion 31 and lower portion 32, a filter frame 33 disposed between the upper and lower portions, and a first fastener 38. The upper end surface of the upper portion 31 is provided with a second feed port 34, a liquid return port 35, a pressure regulating port 36, and a pressure regulating valve 37. The lower end surface of the lower portion 32 is provided with a first liquid outlet 39. The liquid storage chamber 3 is connected to one end of a liquid guide tube 4 via the first liquid outlet 39. The liquid guide tube 4 is provided with a second shut-off valve 41. The other end of the liquid guide tube 4 is connected to the liquid separation chamber 5. The liquid separation chamber 5 includes a separable upper portion 51 and lower portion 52, a filter device 53 disposed in the lower portion, and a second fastener 54. The upper end surface of the upper portion 51 is provided with a pressure regulating port 55, a pressure regulating valve 56, and a third density measurement assembly 57. The lower end surface of the lower part 52 is connected to the return liquid pipe 6, which is provided with a second liquid outlet 61 and a third shut-off valve 62. The lower end of the third shut-off valve 62 is provided with a fourth shut-off valve 63. The other end of the return liquid pipe 6 is connected to the return liquid port 35 of the liquid storage chamber 3.

[0076] In use Figure 2When using a high-purity quartz sand sorting and cleaning system, the required amount of quartz sand and sorting liquid is fed into the sorting chamber 1 through the first feed port 9. At this time, the first shut-off valve 21 is closed, and sorting is completed in the portion of the sorting chamber 1 and the separation chamber 2 located above the first shut-off valve 21. After sorting is completed, the first shut-off valve 21 is opened, and each layer of sorted liquid passes through the separation chamber 2 and enters the liquid storage chamber 3. The quartz sand remains in the filter frame 33, and the filtered liquid flows into the lower portion 32. At this time, the pressure regulating valve 56 is opened, and the pressure regulating port 55 is adjusted to a negative pressure in the liquid separation chamber 5. Then, the second shut-off valve 41 is opened, and the filtered liquid can flow through the first liquid outlet 39, through the liquid conduit 4, and into the liquid separation chamber 5. The filter device 53 in the liquid separation chamber 5 will filter the sand again. After the filtrate has completely entered the liquid separation chamber 5, the pressure regulating port 55 is adjusted to normal atmospheric pressure in the liquid separation chamber 5. The density of the filtrate is measured by the third density measuring component 57 provided in the liquid separation chamber 5. If the density value measured by the third density measuring component 57 reaches a certain threshold value, for example, it may be above 1.7 g / mL, the third shut-off valve 62 is opened, and the liquid is recovered through the second liquid outlet 61 and reused for sorting the next batch of quartz sand; if the density value is lower than a certain threshold value, for example, it may be above 1.7 g / mL, the third shut-off valve 62 is closed, the pressure regulating valve 37 is opened, the pressure regulating port 36 is adjusted to a negative pressure in the liquid storage chamber 3, the fourth shut-off valve 63 is opened, and the filtrate enters the liquid storage chamber 3 through the return pipe 6 to re-clean the quartz sand.

[0077] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-purity quartz sand separation device, characterized in that: The sorting device includes a sorting chamber and a separation chamber from top to bottom, wherein the upper end of the sorting chamber is provided with a first feed port, the lower end of the sorting chamber is connected to the upper end of the separation chamber, the separation chamber is provided with a first shut-off valve, and the cross-sectional area of the sorting chamber is larger than the cross-sectional area of the separation chamber.

2. The sorting device according to claim 1, characterized in that: The cross-sectional area of the sorting chamber is 16 to 36 times the cross-sectional area of the separation chamber; and / or, the height of the sorting chamber is greater than its width; and / or, the height of the sorting chamber is 4 to 6 times the width; And / or, the height of the sorting chamber is 6 to 10 times the height of the separation chamber.

3. The sorting device according to claim 1 or 2, characterized in that: The sorting device further includes a liquid storage chamber for receiving the solid-liquid mixture separated in the separation chamber; the liquid storage chamber is communicated with the lower end of the separation chamber.

4. The sorting device according to claim 3, characterized in that: The volume of the liquid storage chamber is smaller than the volume of the sorting chamber.

5. A high-purity quartz sand sorting and cleaning system, characterized in that: The sorting and cleaning system includes the high-purity quartz sand sorting device and filtering device described in any one of claims 1-4.

6. The sorting and cleaning system according to claim 5, characterized in that: The filtering device comprises a filtering frame for filtering the solid-liquid mixture entering the liquid storage chamber, wherein the filtering frame is arranged in the liquid storage chamber; And / or, the sorting and cleaning system further comprises a liquid conduit for conducting out the liquid filtered by the filtering device, the liquid conduit being connected to the lower end of the liquid storage chamber, and a second shut-off valve for controlling the outflow of the liquid is provided in the liquid conduit.

7. The sorting and cleaning system according to claim 6, characterized in that: The catheter is provided with a second device for measuring the density of the liquid flowing out of the liquid storage chamber. Density measurement components; And / or, the sorting and cleaning system also includes a liquid separation chamber for receiving the liquid introduced through the liquid guide tube, the upper end of the liquid separation chamber is connected to the free end of the liquid guide tube, wherein a filter plate is provided in the liquid separation chamber for filtering the liquid entering the liquid separation chamber, and a first pressure regulating port is provided on the liquid separation chamber for regulating the pressure in the liquid separation chamber.

8. The sorting and cleaning system according to claim 7, characterized in that: The sorting and cleaning system further includes a first recovery pipe for draining the liquid in the liquid guiding pipe, wherein the first recovery pipe is in communication with the liquid guiding pipe; And / or, the sorting and cleaning system further includes a liquid return pipe for discharging the liquid in the liquid separation chamber, the liquid return pipe is connected to the lower end of the liquid separation chamber, and a third shut-off valve for controlling the outflow of the liquid is provided in the liquid return pipe.

9. The sorting and cleaning system according to claim 8, characterized in that: The liquid return pipe and / or the liquid separation chamber is provided with a third density measuring component for measuring the density of the liquid in the liquid separation chamber or the density of the liquid flowing out of the liquid separation chamber; And / or, the free end of the liquid return pipe is connected to the upper end of the liquid storage chamber, wherein the liquid storage chamber is provided with a second pressure regulating port for regulating the pressure of the liquid storage chamber.

10. The sorting and cleaning system according to claim 9, characterized in that: The sorting and cleaning system further includes a second recovery pipe for draining the liquid in the liquid separation chamber, and the second recovery pipe is connected to the liquid return pipe.

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