Quartz sand setting equipment and quartz sand pickling system
The quartz sand settling equipment addresses the issue of quartz sand entering the delivery system by using precipitation devices with grids and slow flow plates to separate and precipitate sand, ensuring clean acid solution circulation and reducing maintenance costs.
Patent Information
- Application Number
- CN202420765334.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-12
AI Technical Summary
During the pickling process of quartz sand, fine sand and quartz sand enter the acid solution delivery pump, heating equipment, and delivery pipeline, causing blockages and wear, which increases maintenance costs and reduces production efficiency.
A quartz sand settling equipment with a first and second precipitation device, featuring grids, slow flow plates, and turbulence rings to slow down and separate quartz sand from the acid solution, ensuring it is naturally precipitated before entering the delivery system.
Prevents quartz sand from entering the delivery system, reducing blockages and wear, saving maintenance costs, and enhancing production efficiency by maintaining the cleanliness of the acid solution.
Smart Images
Figure CN222268030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of quartz sand purification equipment, in particular to quartz sand settling equipment and a quartz sand pickling system. Background Art
[0002] With the rapid development of science and technology, quartz sand is increasingly widely used in high-tech fields. High-tech fields have strict requirements on the quality of quartz sand, and ordinary quartz sand cannot meet the production requirements of high-tech fields. High-purity quartz sand is obtained by purifying ordinary quartz sand. High-purity quartz sand is quartz sand with a SiO2 content higher than 99.9%. It is white powder, no color, and has very low impurity content. High-purity quartz sand has good temperature resistance, excellent chemical properties, excellent electrical insulation and light transmittance, etc. It is an irreplaceable mineral raw material for high-tech industries.
[0003] At present, one of the mainstream methods for purifying ordinary quartz sand is pickling. Taking advantage of the fact that quartz sand is insoluble in acid solution (except hydrofluoric acid), the iron and other harmful elements in the quartz sand are dissolved by acid solution, thereby decomposing the impurities to obtain high-purity quartz sand. The impurities on the surface and in the gaps of the quartz sand can be removed to the maximum extent after soaking in acid solution.
[0004] The process of pickling ordinary quartz sand includes: firstly placing the acid solution prepared in proportion into a reaction container, adding ordinary quartz sand, then heating the acid solution and ordinary quartz sand in the reaction container, and finally soaking them in a heat preservation manner. During the heating process, an acid solution delivery pump is used to continuously inject the heated hot acid solution from the bottom of the reaction container through a heating device, and the excess acid solution overflows from the top of the reaction container back to the acid solution delivery pump, and then is heated by the heating device and injected into the reaction container, so that the acid solution is continuously circulated and heated.
[0005] During the above pickling process, when the excess acid solution overflows from the top of the reaction container, a large amount of fine sand and a small amount of quartz sand will flow into the acid delivery pump, heating equipment and acid delivery pipeline along with the acid solution overflow. This will not only easily cause blockage of the delivery pipeline or equipment, increase the cost of unblocking and cleaning, and reduce the efficiency of continuous production, but also easily cause wear of the delivery pipeline or equipment, increasing the loss of the delivery pipeline or equipment. Utility Model Content
[0006] The main purpose of the utility model is to provide a quartz sand settling equipment and a quartz sand pickling system, aiming to solve the technical problem that during the pickling process, quartz sand easily enters the acid solution delivery pump, heating equipment and acid solution delivery pipeline along with the acid solution, which easily causes the delivery pipeline or equipment to be blocked or worn.
[0007] In order to achieve the above-mentioned purpose, the utility model proposes a quartz sand settling equipment, comprising:
[0008] A first precipitation device, wherein the first precipitation device has an acid inlet and a first overflow port, wherein the acid inlet is arranged at the bottom of the first precipitation device, and the first overflow port is arranged at the top of the first precipitation device, and the acid inlet is connected to an acid inlet pipeline, and a grid is arranged inside the first precipitation device between the acid inlet and the first overflow port;
[0009] The second precipitation equipment comprises a second overflow port and an acid outlet port, the second overflow port and the acid outlet port are both arranged at the top of the second precipitation equipment, the second overflow port is connected to the first overflow port through an overflow pipe, and the acid outlet port is connected to the acid outlet pipe.
[0010] In some embodiments, inside the first precipitation device, a slow flow plate is arranged opposite to the acid inlet, and the slow flow plate is used to change the flow direction of the acid solution flowing from the acid inlet pipeline to the first precipitation device so that the acid solution flows toward the bottom of the first precipitation device.
[0011] In some embodiments, the side of the slow flow plate relative to the pipeline outlet of the acid inlet pipeline is an impact side wall, and the impact side wall is provided with a protective plate.
[0012] In some embodiments, the flow control plate is a structure made of 316 stainless steel, and the protection plate is a structure made of polyethylene.
[0013] In some embodiments, a turbulence ring and an overflow weir are disposed inside the second precipitation equipment, the turbulence ring is disposed at the second overflow port, the overflow weir is disposed at the acid outlet, the overflow weir includes a shielding portion, the shielding portion is used to shield the acid outlet, and there is an acid outlet gap between the shielding portion and the acid outlet.
[0014] In some embodiments, a first sand discharge port and a first backwash port are provided at the bottom of the first sedimentation device, a first sand discharge valve is provided at the first sand discharge port, the first sand discharge valve is used to control the connection and closing of the first sand discharge port, and the first backwash port is used to introduce backwash water into the first sedimentation device, a second sand discharge port and a second backwash port are provided at the bottom of the second sedimentation device, a second sand discharge valve is provided at the second sand discharge port, the second sand discharge valve is used to control the connection and closing of the second sand discharge port, and the second backwash port is used to introduce backwash water into the second sedimentation device.
[0015] In some embodiments, a first flushing port is disposed on the top of the first precipitation device, and the first flushing port is connected to a first flushing pipe. A second flushing port is disposed on the top of the second precipitation device, and the second flushing port is connected to a second flushing pipe.
[0016] In some embodiments, the first sedimentation device is provided with a first inspection port, and the second sedimentation device is provided with a second inspection port.
[0017] In some embodiments, the grid extends along a curve from an end close to the acid inlet toward an end away from the acid inlet.
[0018] Correspondingly, the utility model also proposes a quartz sand pickling system, including the quartz sand settling equipment described in any of the above embodiments.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] In the technical solution of the utility model, when ordinary quartz sand is pickled and impurities are removed, the ordinary quartz sand is first pre-stored in the first precipitation device, and then an acid solution is transported to the first precipitation device through an acid inlet pipe (the acid solution here usually refers to an oxalic acid solution, that is, the ordinary quartz sand is usually pickled and impurities are removed using an oxalic acid solution), so that the ordinary quartz sand in the first precipitation device can be fully in contact with the acid solution, and then the iron and other harmful elements in the ordinary quartz sand are dissolved using the acid solution to obtain high-purity quartz sand. When the acid solution is continuously introduced into the first precipitation device, the liquid level of the acid solution in the first precipitation device will continue to rise, and the acid solution will flow through the grid and reach the first overflow port, and finally be transported from the first overflow port to the second precipitation device through the overflow pipe. When the acid solution flows through the grid, the flow of the acid solution will be hindered. At this time, the flow rate of the acid solution will be reduced, so that the quartz sand carried in the acid solution has sufficient time to be naturally precipitated (the specific gravity of quartz sand is higher than that of the acid solution, so the quartz sand can be naturally precipitated in the acid solution). In this way, the content of quartz sand doped in the acid solution overflowing from the first precipitation device to the second precipitation device will be greatly reduced, and after the acid solution is transported to the second precipitation device, a very small amount of quartz sand impurities in the acid solution will be secondary precipitated in the second precipitation device, so that the final output acid solution is a pure acid solution without quartz sand impurities. In this way, when the acid solution circulates, quartz sand can be prevented from entering the acid delivery pump, heating equipment and acid delivery pipeline with the acid solution, thereby avoiding blockage and wear of the delivery pipeline or equipment, reducing the cost of equipment dredging and cleaning, saving dredging and cleaning time, improving the efficiency of continuous production, ensuring the service life of the delivery pipeline and equipment, and saving the cost of repairing and replacing the delivery pipeline and equipment.
[0021] The quartz sand pickling system using the above-mentioned quartz sand settling equipment can ensure the cleanliness of the acid solution during the circulation process, avoid the inclusion of quartz sand impurities in the acid solution, thereby avoiding blockage and wear of the quartz sand pickling system, ensuring the efficiency of continuous production and reducing the cost of cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0023] Figure 1 A front view of the overall internal structure of a quartz sand settling device provided in one embodiment of the utility model;
[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0025] Figure 3 A top view of the overall structure of a quartz sand settling device provided in one embodiment of the utility model.
[0026] Description of Figure Numbers:
[0027] 100-first precipitation equipment;
[0028] 110-acid inlet; 120-acid inlet pipeline; 130-first overflow port; 140-grid; 150-slow flow plate; 160-first sand discharge port; 170-first backwash port; 180-first flushing port; 190-first inspection port;
[0029] 151-impact side wall; 152-support rod;
[0030] 200-second precipitation equipment;
[0031] 210-second overflow port; 220-overflow pipe; 230-acid outlet; 240-acid outlet pipe; 250-turbulence circle; 260-overflow weir; 270-second sand discharge port; 280-second backwash port; 290-second flushing port; 300-second inspection port;
[0032] 261 - shielding portion; 262 - fixing portion; 263 - acid outlet gap.
[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0037] With the rapid development of science and technology, quartz sand is increasingly widely used in high-tech fields. High-tech fields have strict requirements on the quality of quartz sand, and ordinary quartz sand cannot meet the production requirements of high-tech fields. High-purity quartz sand is obtained by purifying ordinary quartz sand. High-purity quartz sand is quartz sand with a SiO2 content higher than 99.9%. It is white powder, no color, and has very low impurity content. High-purity quartz sand has good temperature resistance, excellent chemical properties, excellent electrical insulation and light transmittance, etc. It is an irreplaceable mineral raw material for high-tech industries.
[0038] At present, one of the mainstream methods for purifying ordinary quartz sand is pickling. Taking advantage of the fact that quartz sand is insoluble in acid solution (except hydrofluoric acid), the iron and other harmful elements in the quartz sand are dissolved by acid solution, thereby decomposing the impurities to obtain high-purity quartz sand. The impurities on the surface and in the gaps of the quartz sand can be removed to the maximum extent after soaking in acid solution.
[0039] The process of pickling ordinary quartz sand includes: firstly placing the acid solution prepared in proportion into a reaction container, adding ordinary quartz sand, then heating the acid solution and ordinary quartz sand in the reaction container, and finally soaking them in a heat preservation manner. During the heating process, an acid solution delivery pump is used to continuously inject the heated hot acid solution from the bottom of the reaction container through a heating device, and the excess acid solution overflows from the top of the reaction container back to the acid solution delivery pump, and then is heated by the heating device and injected into the reaction container, so that the acid solution is continuously circulated and heated.
[0040] During the heating process, hot acid solution is injected from the bottom of the reaction container. On the one hand, it can quickly exchange heat with the cold acid solution and ordinary quartz sand in the reaction container to improve the heating efficiency. On the other hand, when the hot acid solution is injected from the bottom of the reaction container, the power generated can fully stir the acid solution and ordinary quartz sand in the reaction container, which can effectively improve the pickling effect of ordinary quartz sand.
[0041] During the above pickling process, when the excess acid solution overflows from the top of the reaction container, a large amount of fine sand and a small amount of quartz sand will flow into the acid delivery pump, heating equipment and acid delivery pipeline along with the acid solution overflow. This will not only easily cause blockage of the delivery pipeline or equipment, increase the cost of unblocking and cleaning, and reduce the efficiency of continuous production, but also easily cause wear of the delivery pipeline or equipment, increasing the loss of the delivery pipeline or equipment.
[0042] In order to solve the technical problem that during the pickling process, quartz sand easily enters the acid delivery pump, heating equipment and acid delivery pipeline along with the acid solution, which easily causes the delivery pipeline or equipment to be blocked or worn, refer to Figures 1 to 3An embodiment of the utility model provides a quartz sand grit settling device, which includes a first precipitation device 100 and a second precipitation device 200. The second precipitation device 200 is arranged on the downstream side of the first precipitation device 100. When ordinary quartz sand is pickled, the acid solution is first transported to the first precipitation device 100 by the acid inlet pipeline 120. In the first precipitation device 100, the acid solution will dissolve the metal impurities in the ordinary quartz sand and complete the primary precipitation in the first precipitation device 100. Then, the acid solution will overflow from the first precipitation device 100 to the second precipitation device 200, complete the secondary precipitation in the second precipitation device 200, and finally be discharged from the second precipitation device 200. Specifically, the first precipitation device 100 has an acid inlet 110 and a first overflow port 130, the acid inlet 110 is arranged at the bottom of the first precipitation device 100, the first overflow port 130 is arranged at the top of the first precipitation device 100, the acid inlet 110 is connected to the acid inlet pipe 120, and a grid 140 is arranged between the acid inlet 110 and the first overflow port 130 inside the first precipitation device 100, the second precipitation device 200 has a second overflow port 210 and an acid outlet port 230, the second overflow port 210 and the acid outlet port 230 are both arranged at the top of the second precipitation device 200, the second overflow port 210 is connected to the first overflow port 130 through an overflow pipe 220, and the acid outlet port 230 is connected to the acid outlet pipe 240.
[0043] Specifically, in this embodiment, when ordinary quartz sand is pickled and impurities are removed, the ordinary quartz sand is first pre-stored in the first precipitation device 100, and then an acid solution is transported to the first precipitation device 100 through the acid inlet pipe 120 (the acid solution here usually refers to an oxalic acid solution, that is, the ordinary quartz sand is usually pickled and impurities are removed using an oxalic acid solution), so that the ordinary quartz sand in the first precipitation device 100 can be fully in contact with the acid solution, and then the iron and other harmful elements in the ordinary quartz sand are dissolved using the acid solution to obtain high-purity quartz sand. When the acid solution is continuously introduced into the first precipitation device 100, the liquid level of the acid solution in the first precipitation device 100 will continue to rise, and at this time the acid solution will flow through the grid 140 and reach the first overflow port 130, and finally be transported from the first overflow port 130 to the second precipitation device 200 through the overflow pipe 220. When the acid solution flows through the grid 140, the flow of the acid solution will be hindered. At this time, the flow rate of the acid solution will be reduced, so that the quartz sand carried in the acid solution has sufficient time to be naturally precipitated (the specific gravity of quartz sand is higher than that of the acid solution, so the quartz sand can be naturally precipitated in the acid solution). In this way, the content of quartz sand doped in the acid solution overflowing from the first precipitation device 100 to the second precipitation device 200 will be greatly reduced, and after the acid solution is transported to the second precipitation device 200, a very small amount of quartz sand impurities in the acid solution will be secondary precipitated in the second precipitation device 200, so that the final output acid solution is a pure acid solution without quartz sand impurities. In this way, when the acid solution circulates, quartz sand can be prevented from entering the acid delivery pump, heating equipment and acid delivery pipeline with the acid solution, thereby avoiding blockage and wear of the delivery pipeline or equipment, reducing the cost of equipment dredging and cleaning, saving dredging and cleaning time, improving the efficiency of continuous production, ensuring the service life of the delivery pipeline and equipment, and saving the cost of repairing and replacing the delivery pipeline and equipment.
[0044] Further, refer to Figure 1 , the acid inlet 110 is arranged at the bottom of the first precipitation device 100, and the first overflow port 130 is arranged at the top of the first precipitation device 100. With such a design, on the one hand, the potential difference when the acid solution enters the bottom of the first precipitation device 100 from the acid inlet pipe 120 can be reduced, the impact force of the acid solution when entering the first precipitation device 100 can be reduced, and the quartz sand at the bottom of the first precipitation device 100 can be prevented from being lifted up in a large range, thereby effectively avoiding the quartz sand from hitting the inner wall of the first precipitation device 100 and causing the wear of the inner wall of the first precipitation device 100. On the other hand, the flow path of the acid solution in the first precipitation device 100 can be increased, and the time that the acid solution stays in the first precipitation device 100 can be extended, so that the quartz sand carried by the acid solution has sufficient time to precipitate, thereby ensuring the cleanliness of the acid solution.
[0045] In some embodiments, reference Figure 1 Inside the first precipitation device 100, a slow flow plate 150 is arranged opposite to the acid inlet 110. The slow flow plate 150 is used to change the flow direction of the acid solution flowing from the acid inlet pipe 120 to the first precipitation device 100 so that the acid solution flows toward the bottom of the first precipitation device 100.
[0046] Specifically, in order to reduce the initial speed of the acid solution entering the first precipitation device 100 and reduce the impact force of the acid solution on the quartz sand in the first precipitation device 100, in the present embodiment, a slow flow plate 150 is arranged in the first precipitation device 100 opposite to the pipe outlet of the acid inlet pipe 120. When the acid solution is discharged from the pipe outlet of the acid inlet pipe 120 and flows into the first precipitation device 100, it will first hit the slow flow plate 150, and change the flow direction after hitting the slow flow plate 150, and flow toward the bottom of the first precipitation device 100. At the same time, after hitting the slow flow plate 150, the acid solution will reduce the flow speed in the first precipitation device 100, so as to avoid the acid solution from generating a large impact force on the quartz sand at the bottom of the first precipitation device 100 when it just enters the first precipitation device 100, causing the quartz sand to fly and spread over a large range, resulting in the quartz sand seriously eroding the inner wall of the first precipitation device 100 and the grille 140 arranged inside the first precipitation device 100.
[0047] Further, refer to Figure 1 One end of the slow flow plate 150 is connected to the inner wall of the first precipitation device 100, and a support rod 152 can be provided on the side of the slow flow plate 150 away from the pipe outlet of the acid inlet pipe 120. The area enclosed by the support rod 152, the slow flow plate 150 and the inner wall of the first precipitation device 100 can be triangular. Since the triangle is stable, such a structure can prevent the slow flow plate 150 from being deflected under the impact force of the acid solution, thereby ensuring the connection stability of the slow flow plate 150 in the first precipitation device 100, so that the slow flow plate 150 can play a good role in slowing down the flow and reducing the speed.
[0048] In some embodiments, reference Figure 1 The side of the slow flow plate 150 opposite to the pipeline outlet of the acid inlet pipeline 120 is an impact side wall 151, and the impact side wall 151 is provided with a protective plate (not shown in the figure).
[0049] Specifically, although the slow flow plate 150 can slow down the flow rate of the acid solution entering the first precipitation device 100, when the acid solution and the quartz sand are mixed, some of the quartz sand will still be carried to cause a certain impact on the slow flow plate 150. When the quartz sand contacts the slow flow plate 150, since the quartz sand is irregular in shape and has sharp corners, the quartz sand will cause scratches and wear on the slow flow plate 150. In order to prevent the slow flow plate 150 from being worn by the quartz sand, in this embodiment, when the slow flow plate 150 is facing A protective plate is provided on one side of the bottom of the first sedimentation device 100. For example, the protective plate can be welded to the surface of the impact side wall 151 of the slow flow plate 150, or the protective plate can be threadedly connected to the surface of the impact side wall 151 of the slow flow plate 150. The protective plate can effectively resist the wear of quartz sand and avoid direct contact between quartz sand and the slow flow plate 150, thereby improving the wear resistance of the slow flow plate 150, ensuring that the slow flow plate 150 is not damaged, and extending the service life of the slow flow plate 150.
[0050] In some embodiments, the flow control plate 150 is a structure made of 316 stainless steel, and the protection plate is a structure made of polyethylene.
[0051] Specifically, when ordinary quartz sand is pickled, oxalic acid is mainly used to dissolve the iron and other harmful elements in the ordinary quartz sand, so as to obtain high-purity quartz sand. This causes the slow flow plate 150 to be in a humid and highly acid-corrosive environment for a long time. Therefore, in order to extend the service life of the slow flow plate 150 and ensure that the slow flow plate 150 can be in a normal working state, in this embodiment, the slow flow plate 150 is made of 316 stainless steel. On the one hand, 316 stainless steel is resistant to oxalic acid and will not be corroded by oxalic acid, so that the slow flow plate 150 can exist in the working environment of oxalic acid for a long time, giving full play to the buffering and deceleration effect of the slow flow plate 150 on the acid solution. On the one hand, 316 stainless steel has good atmospheric corrosion resistance, so that the slow flow plate 150 will not be rusted in a long-term humid working environment, thereby extending the service life of the slow flow plate 150. On the other hand, 316 stainless steel has good high temperature resistance. In order to improve the pickling effect of ordinary quartz sand, the acid solution needs to be heated into hot acid and then mixed with quartz sand for reaction. This results in the slow flow plate 150 being in a high temperature working environment for a long time. Therefore, in view of the high temperature resistance of 316 stainless steel, the slow flow plate 150 is made of 316 stainless steel, which can avoid deformation, corrosion, etc. at high temperatures and extend the service life of the slow flow plate 150.
[0052] In addition, since polyethylene has good chemical stability and will not be corroded by acids and alkalis, the protective plate made of polyethylene material can exist in the working environment of oxalic acid for a long time, so that the protective plate can effectively protect the slow flow plate 150 from the impact and wear of quartz sand.
[0053] In some embodiments, reference Figure 1 The second precipitation device 200 is provided with a turbulence ring 250 and an overflow weir 260 inside. The turbulence ring 250 is arranged at the second overflow port 210 (the second overflow port 210 is equivalent to the acid inlet 110 of the second precipitation device 200, and the acid solution enters the second precipitation device 200 from the second overflow port 210). The overflow weir 260 is arranged at the acid outlet 230. The overflow weir 260 includes a shielding portion 261, which is used to shield the acid outlet 230, and there is an acid outlet gap 263 between the shielding portion 261 and the acid outlet 230.
[0054] Specifically, in order to ensure that the acid solution flowing from the first precipitation device 100 into the second precipitation device 200 can be fully precipitated for the second time in the second precipitation device 200, so that the acid solution flowing out from the acid outlet 230 is clean and almost does not contain quartz sand impurities, in the present embodiment, when the acid solution flows from the first precipitation device 100 into the second precipitation device 200 through the overflow pipe 220, it will first flow through the turbulence circle 250 provided at the second overflow port 210. The turbulence circle 250 will reduce the velocity fluctuation of the acid solution, so that the acid solution changes from turbulent flow to turbulent flow, thereby preventing the acid solution from flowing out directly from the acid outlet 230 of the second precipitation device 200 after flowing into the second precipitation device 200, and failing to complete the secondary precipitation in the second precipitation device 200, thereby affecting the purity of the acid solution finally discharged.
[0055] Furthermore, in order to prevent the acid solution flowing into the second precipitation device 200 from directly splashing out from the acid outlet 230, and to ensure that the acid solution will overflow from the acid outlet 230 only after being fully precipitated in the second precipitation device 200, in this embodiment, an overflow weir 260 is provided at the acid outlet 230, and the overflow weir 260 is used to block the acid outlet 230, so that the acid solution can only be discharged from the acid outlet 230 through the acid outlet gap 263 between the overflow weir 260 and the acid outlet 230. By providing the overflow weir 260 at the acid outlet 230, the acid solution can be effectively prevented from splashing out of the second precipitation device 200 from the acid outlet 230. Specifically, referring to Figure 2 The overflow weir 260 includes a fixed portion 262 and a shielding portion 261. The fixed portion 262 is arranged on the inner wall of the second precipitation device 200. The shielding portion 261 is connected to the fixed portion 262. The shielding portion 261 is used to shield the acid outlet 230 to ensure that the acid solution entering the second precipitation device 200 does not flow out directly from the acid outlet 230. There is an acid outlet gap 263 between the shielding portion 261 and the acid outlet 230, so that after the acid solution is precipitated in the second precipitation device 200 for a sufficiently long time, that is, after the liquid level of the acid solution in the second precipitation device 200 is high enough, it overflows from the acid outlet 230 through the acid outlet gap 263 and is discharged from the second precipitation device 200.
[0056] It should be noted that the turbulence ring 250 is a conventional device in the art, so the specific structure and working principle of the turbulence ring 250 will not be described in detail here.
[0057] In some embodiments, reference Figure 1 A first sand discharge port 160 and a first backwash port 170 are provided at the bottom of the first sedimentation device 100. A first sand discharge valve is provided at the first sand discharge port 160. The first sand discharge valve is used to control the connection and closing of the first sand discharge port 160. The first backwash port 170 is used to introduce backwash water into the first sedimentation device 100. A second sand discharge port 270 and a second backwash port 280 are provided at the bottom of the second sedimentation device 200. A second sand discharge valve is provided at the second sand discharge port 270. The second sand discharge valve is used to control the connection and closing of the second sand discharge port 270. The second backwash port 280 is used to introduce backwash water into the second sedimentation device 200.
[0058] Specifically, in order to facilitate the discharge of high-purity quartz sand after pickling from the first precipitation device 100 and the second precipitation device 200, and to facilitate the collection and utilization of high-purity quartz sand in subsequent production, in this embodiment, after the ordinary quartz sand in the first precipitation device 100 is pickled and the acid solution in the first precipitation device 100 is drained, the first sand discharge valve is opened so that the first sand discharge port 160 is in a state of communication with the outside world, and the high-purity quartz sand in the first precipitation device 100 can be discharged from the first sand discharge port 160 to achieve the collection and utilization of high-purity quartz sand. When the high-purity quartz sand in the first precipitation device 100 is drained and the first precipitation device 100 is rinsed and cleaned, the first sand discharge valve can be closed so that the first sand discharge port 160 is in a closed state, and the next round of pickling of ordinary quartz sand can be carried out.
[0059] Similarly, when the ordinary quartz sand in the second precipitation device 200 is pickled and the acid solution in the second precipitation device 200 is drained, the second sand discharge valve is opened so that the second sand discharge port 270 is in a state of communication with the outside world, and the high-purity quartz sand in the second precipitation device 200 can be discharged from the second sand discharge port 270 to achieve the collection and utilization of high-purity quartz sand. When the high-purity quartz sand in the second precipitation device 200 is drained and the second precipitation device 200 is rinsed and cleaned, the second sand discharge valve can be closed so that the second sand discharge port 270 is in a closed state, and the next round of pickling of ordinary quartz sand can be carried out.
[0060] Furthermore, since the quartz sand may accumulate at the first sand row port 160 or the second sand row port 270 during the process of being discharged from the first precipitation device 100 or the second precipitation device 200, resulting in blockage at the first sand row port 160 or the second sand row port 270, in order to avoid the quartz sand from accumulating at the first sand row port 160 or the second sand row port 270 and being difficult to discharge, resulting in blockage at the first sand row port 160 or the second sand row port 270, in this embodiment, when collecting high-purity quartz sand after pickling, if blockage occurs at the first sand row port 160 and the high-purity quartz sand cannot be discharged from the first precipitation device 100, a water pipe can be introduced at the first backwash port 170, and the backwash water at the first backwash port 170 can be used to disperse the high-purity quartz sand accumulated at the first sand row port 160, so that it becomes more dispersed particles instead of more aggregated blocks, thereby facilitating the discharge of the high-purity quartz sand from the first sand row port 160 and realizing the collection and utilization of the high-purity quartz sand.
[0061] Similarly, if blockage occurs at the second sand discharge port 270 and the high-purity quartz sand cannot be discharged from the second precipitation equipment 200, a water pipe can be introduced at the second backwash port 280, and the backwash water at the second backwash port 280 can be used to disperse the high-purity quartz sand accumulated at the second sand discharge port 270, so that it becomes more dispersed particles rather than more aggregated blocks, which is conducive to discharging the high-purity quartz sand from the second sand discharge port 270 and realizing the collection and utilization of high-purity quartz sand.
[0062] It should be noted that, since the first precipitation device 100 is mainly a place where ordinary quartz sand reacts with the acid solution and undergoes primary precipitation, and the second precipitation device 200 is mainly a place where the acid solution undergoes secondary precipitation, the high-purity quartz sand after acid washing is mainly accumulated in the first precipitation device 100, and only a small amount of high-purity quartz sand is deposited in the second precipitation device 200. In order to improve the collection efficiency of high-purity quartz sand, in some embodiments, reference is made to Figure 1 A plurality of first sand discharge ports 160 and a plurality of first recoil ports 170 may be provided at the bottom of the first sedimentation device 100, and only one second sand discharge port 270 and one second recoil port 280 may be provided at the bottom of the second sedimentation device 200 to ensure the rationality of the design of the quartz sand sedimentation device.
[0063] In some embodiments, reference Figure 1 and Figure 3 A first flushing port 180 is provided at the top of the first sedimentation device 100, and the first flushing port 180 is connected to a first flushing pipe (not shown in the figure). A second flushing port 290 is provided at the top of the second sedimentation device 200, and the second flushing port 290 is connected to a second flushing pipe (not shown in the figure).
[0064] Specifically, in order to facilitate flushing and cleaning the interior of the first precipitation device 100 and the second precipitation device 200, in this embodiment, after the high-purity quartz sand inside the first precipitation device 100 or the second precipitation device 200 is drained, the interior of the first precipitation device 100 can be flushed and cleaned through the first flushing pipe at the first flushing port 180, and the interior of the second precipitation device 200 can be flushed and cleaned through the second flushing pipe at the second flushing port 290. Further, the first flushing port 180 is set at the top of the first precipitation device 100, and the second flushing port 290 is set at the top of the second precipitation device 200, so that the interior of the first precipitation device 100 or the second precipitation device 200 can be flushed and cleaned to the maximum extent.
[0065] In some embodiments, in order to improve the cleaning efficiency and cleaning effect of the inside of the first precipitation device 100 or the second precipitation device 200, multiple first flushing ports 180 can be set at the top of the first precipitation device 100, and multiple second flushing ports 290 can be set at the top of the second precipitation device 200.
[0066] In some embodiments, reference Figure 3 The first sedimentation device 100 is provided with a first inspection port 190, and the second sedimentation device 200 is provided with a second inspection port 300. When a fault occurs inside the first sedimentation device 100, or a component inside the first sedimentation device 100 needs to be replaced, an on-site worker can enter the first sedimentation device 100 through the first inspection port 190 to inspect and maintain the first sedimentation device 100. Similarly, when a fault occurs inside the second sedimentation device 200, or a component inside the second sedimentation device 200 needs to be replaced, an on-site worker can enter the second sedimentation device 200 through the second inspection port 300 to inspect and maintain the second sedimentation device 200.
[0067] In some embodiments, reference Figure 1 , the grid 140 extends along a curve from one end close to the acid inlet 110 to one end away from the acid inlet 110. Exemplarily, for example, the grid 140 as a whole may be in an S-shaped structure, or the grid 140 as a whole may be in a wavy structure, and the acid solution flows between two adjacent channels of the grid 140. By designing the grid 140 into the above-mentioned structural shape, on the one hand, the flow path of the acid solution can be increased, so that the quartz sand in the acid solution has sufficient time to settle to the bottom of the first precipitation device 100, and on the other hand, the flow speed of the acid solution in the first precipitation device 100 can also be reduced, and the quartz sand in the acid solution can also have sufficient time to settle to the bottom of the first precipitation device 100, thereby preventing the quartz sand from flowing into the conveying pipeline or other equipment along with the acid solution, causing blockage or wear of the conveying pipeline or other equipment.
[0068] Correspondingly, another embodiment of the utility model further provides a quartz sand pickling system, which includes the quartz sand settling equipment in any of the above embodiments.
[0069] Specifically, in this embodiment, the quartz sand pickling system using the above-mentioned quartz sand settling equipment can ensure the cleanliness of the acid solution during the circulation process, avoid the inclusion of quartz sand impurities in the acid solution, thereby avoiding blockage and wear of the quartz sand pickling system, ensuring the efficiency of continuous production, and reducing the cost of cleaning and maintenance.
[0070] Thanks to the improvement of the above-mentioned quartz sand grit settling equipment, the quartz sand pickling system of this embodiment has the same technical effect as the above-mentioned quartz sand grit settling equipment, which will not be repeated here.
[0071] It should be noted that other contents of the quartz sand settling equipment and the quartz sand pickling system disclosed in the utility model can be referred to the prior art and will not be repeated here.
[0072] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. Quartz sand sedimentation equipment, characterized in that: include: A first precipitation device, wherein the first precipitation device has an acid inlet and a first overflow port, wherein the acid inlet is arranged at the bottom of the first precipitation device, and the first overflow port is arranged at the top of the first precipitation device, and the acid inlet is connected to an acid inlet pipeline, and a grid is arranged inside the first precipitation device between the acid inlet and the first overflow port; The second precipitation equipment comprises a second overflow port and an acid outlet port, the second overflow port and the acid outlet port are both arranged at the top of the second precipitation equipment, the second overflow port is connected to the first overflow port through an overflow pipe, and the acid outlet port is connected to the acid outlet pipe.
2. The quartz sand sedimentation equipment according to claim 1, characterized in that: Inside the first precipitation device, a slow flow plate is arranged opposite to the acid inlet, and the slow flow plate is used to change the flow direction of the acid solution flowing from the acid inlet pipeline to the first precipitation device so that the acid solution flows toward the bottom of the first precipitation device.
3. The quartz sand sedimentation equipment according to claim 2, characterized in that: The side of the slow flow plate relative to the pipeline outlet of the acid inlet pipeline is an impact side wall, and the impact side wall is provided with a protective plate.
4. The quartz sand sedimentation equipment according to claim 3, characterized in that: The slow flow plate is a structure made of 316 stainless steel, and the protective plate is a structure made of polyethylene.
5. The quartz sand sedimentation equipment according to claim 1, characterized in that: A turbulence ring and an overflow weir are arranged inside the second precipitation equipment. The turbulence ring is arranged at the second overflow port, and the overflow weir is arranged at the acid outlet. The overflow weir includes a shielding part, and the shielding part is used to shield the acid outlet, and there is an acid outlet gap between the shielding part and the acid outlet.
6. The quartz sand sedimentation equipment according to claim 1, characterized in that: A first sand discharge port and a first backwash port are provided at the bottom of the first sedimentation device, a first sand discharge valve is provided at the first sand discharge port, the first sand discharge valve is used to control the connection and closing of the first sand discharge port, and the first backwash port is used to introduce backwash water into the first sedimentation device, a second sand discharge port and a second backwash port are provided at the bottom of the second sedimentation device, a second sand discharge valve is provided at the second sand discharge port, the second sand discharge valve is used to control the connection and closing of the second sand discharge port, and the second backwash port is used to introduce backwash water into the second sedimentation device.
7. The quartz sand sedimentation equipment according to claim 1, characterized in that: A first flushing port is provided on the top of the first precipitation device, and the first flushing port is connected to a first flushing pipe. A second flushing port is provided on the top of the second precipitation device, and the second flushing port is connected to a second flushing pipe.
8. The quartz sand settling equipment according to claim 1, characterized in that: The first sedimentation device is provided with a first inspection port, and the second sedimentation device is provided with a second inspection port.
9. The quartz sand settling equipment according to any one of claims 1 to 8, characterized in that: The grid extends along a curve from an end close to the acid inlet toward an end away from the acid inlet.
10. Quartz sand pickling system, characterized in that: The invention comprises the quartz sand settling equipment as described in any one of claims 1 to 9.