Acid pickling reaction tank

Abstract

The utility model discloses an acid pickling reaction tank, and relates to the technical field of quartz sand acid pickling, the acid pickling reaction tank comprises a tank body, an acid inlet assembly and an acid outlet assembly, the tank body encloses to form an acid pickling cavity, and a first opening and a second opening communicated with the acid pickling cavity; the acid inlet assembly is connected to the tank body, the acid inlet assembly is provided with an acid inlet channel, a first acid inlet and a plurality of first acid outlets, the first acid inlet and the first acid outlets are communicated with the acid inlet channel, at least part of the acid inlet assembly penetrates through the first opening, and the first acid outlets are communicated with the pickling cavity; the acid outlet assembly is connected to the tank body and provided with an acid outlet channel, a second acid inlet and a second acid outlet, the second acid inlet and the second acid outlet are communicated with the acid outlet channel, at least part of the acid outlet assembly penetrates through the second opening, the second acid inlet is communicated with the pickling cavity, and the second acid inlet is provided with a filtering structure. According to the technical scheme provided by the utility model, the acid inlet channel is additionally arranged, so that the acid inlet channel and the acid outlet channel are separately arranged, the possibility that grit enters the acid outlet channel is reduced, and the acid outlet channel is prevented from being damaged or blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of quartz sand pickling, in particular to a pickling reaction tank. Background Art

[0002] Quartz sand is a very important non-metallic silicate mineral with stable chemical properties. It is an important industrial mineral raw material and is widely used in glass, ceramics, ferrosilicon smelting, metallurgy, construction, chemical industry, abrasives and other processing and manufacturing industries. Purified quartz sand can be used to prepare energy-saving glass, electronic glass, photovoltaic glass, microcrystals, etc. depending on the purity after purification.

[0003] At present, the main method for purifying quartz sand is pickling. Pickling purification is mainly for improving the purity of quartz sand. The acid reacts with the metal impurities on the surface of quartz sand and in the lattice system to separate the quartz sand and the metal impurities, thereby achieving the purification effect. The existing pickling needs to be carried out in a reaction tank. The acid inlet and outlet channels of the pickling reaction tank use the same channel, which is equipped with a filtering structure. However, due to the drastic changes in pressure and temperature when the acid is inlet and outlet, the stability of the filtering structure will be affected, resulting in sand and gravel entering the channel, causing structural damage or blockage of the acid inlet and outlet channels. Utility Model Content

[0004] The main purpose of the utility model is to propose a pickling reaction tank, which aims to add an acid inlet channel to separate the acid inlet channel and the acid outlet channel, reduce the possibility of sand and gravel entering the acid outlet channel, and avoid damage or blockage of the acid outlet channel.

[0005] To achieve the above-mentioned purpose, the present invention proposes a pickling reaction tank, which is used for pickling quartz sand. The pickling reaction tank comprises:

[0006] A tank body, the tank body enclosing a pickling chamber and a first opening and a second opening communicating with the pickling chamber;

[0007] an acid inlet assembly connected to the tank body, the acid inlet assembly being provided with an acid inlet channel and a first acid inlet and a plurality of first acid outlets communicating with the acid inlet channel, at least part of the acid inlet assembly being passed through the first opening, the plurality of first acid outlets being communicated with the pickling chamber, the first acid inlet being used to supply acid solution to flow into the acid inlet channel, and the first acid outlet being used to supply acid solution to flow from the acid inlet channel into the pickling chamber; and

[0008] An acid outlet component is connected to the tank body, the acid outlet component is provided with an acid outlet channel and a second acid inlet and a second acid outlet connected to the acid outlet channel, at least part of the acid outlet component is passed through the second opening, the second acid inlet is connected to the pickling chamber, the second acid inlet is provided with a filtering structure, the second acid inlet is used to supply the pickling chamber to flow into the acid outlet channel, and the second acid outlet is used to supply acid liquid to flow out of the acid outlet channel.

[0009] In one embodiment, the acid inlet assembly includes an acid inlet main pipeline and multiple acid inlet branch pipelines connected to the acid inlet main pipeline, the acid inlet main pipeline is provided with the first acid inlet, each of the acid inlet branch pipelines is provided with multiple first acid outlets, and the multiple acid inlet branch pipelines are evenly spaced on both sides of the acid inlet main pipeline and are arranged at an angle to the acid inlet main pipeline.

[0010] In one embodiment, the acid inlet assembly further comprises a multi-way joint, the acid inlet main pipeline comprises multiple sections of main pipelines, and adjacent main pipelines and acid inlet branch pipelines are connected by socket hot-melt connection via the multi-way joint.

[0011] In one embodiment, the plurality of first acid outlets are spaced apart along the extending direction of the acid inlet branch pipe;

[0012] And / or, the acid inlet assembly further includes a support plate, the acid inlet main pipeline and the acid inlet branch pipeline are connected to the bottom wall of the tank body through the support plate, and the support plate is made of polypropylene.

[0013] In one embodiment, the diameter of the first acid outlet is in the range of 10 mm to 16 mm;

[0014] And / or, the diameter of the acid inlet branch pipe ranges from 80 mm to 100 mm.

[0015] In one embodiment, the acid outlet component includes an acid outlet pipe, an acid outlet main pipe and multiple acid outlet branch pipes, the acid outlet main pipe is arranged in a ring shape, the acid outlet pipe and the multiple acid outlet branch pipes are respectively connected to the acid outlet main pipe, the acid outlet pipe is passed through the second opening and is provided with the second acid outlet, and each of the acid outlet branch pipes is provided with multiple second acid inlets.

[0016] In one embodiment, the filtering structure is a filter screen, and the filter screen is arranged to cover the second acid inlet.

[0017] In one embodiment, a mounting groove is further recessed on the bottom wall of the tank body, the second opening is provided on the bottom wall of the mounting groove, and the acid outlet main pipeline is provided in the mounting groove.

[0018] In one embodiment, the pickling reaction tank also includes a sand outlet pipe, the acid outlet main pipe is surrounded to form a cavity, the bottom of the mounting groove is provided with a third opening, the sand outlet pipe is passed through the third opening and is located in the cavity, and the sand outlet pipe is used to allow the quartz sand in the pickling cavity to flow out.

[0019] In one embodiment, the bottom of the tank is conical.

[0020] The technical solution of the present invention is to set an acid inlet component and an acid outlet component in the pickling chamber of the tank body. When the pickling liquid is injected into the pickling chamber, the pickling liquid enters the acid inlet channel from the first acid inlet, and then flows into the pickling chamber from the multiple first acid outlets through the acid inlet channel. In this way, the pickling liquid can be in uniform contact with the sand ore in the pickling chamber, thereby improving the pickling efficiency. After the pickling is completed, the pickling liquid enters the acid outlet channel from the second acid inlet, and then flows out of the acid outlet channel from the second acid outlet. This solution sets the acid inlet channel and the acid outlet channel separately to avoid the acid outlet component and the filter structure being repeatedly subjected to drastic changes in pressure and temperature during acid inlet and outlet, thereby improving the stability of the acid outlet component and the filter structure, reducing the possibility of damage or blockage in the acid outlet channel, reducing the failure rate of the pickling reaction tank, and thus ensuring the production efficiency of pickling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a pickling reaction tank in an embodiment of the present invention;

[0023] Figure 2 This is a structural diagram of an acid inlet assembly in one embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the cross-sectional structure of an acid inlet branch pipeline in one embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of part of the acid outlet assembly in one embodiment of the present invention.

[0026] Description of Figure Numbers:

[0027] 100. Pickling reaction tank; 1. Tank body; 11. Pickling chamber; 12. First opening; 13. Second opening; 14. Third opening; 15. Mounting slot; 2. Acid inlet assembly; 21. Acid inlet main pipeline; 211. First acid inlet; 22. Acid inlet branch pipeline; 221. First acid outlet; 23. Multi-way connector; 24. Support plate; 3. Acid outlet assembly; 31. Acid outlet pipeline; 311. Second acid outlet; 32. Acid outlet main pipeline; 33. Acid outlet branch pipeline; 331. Second acid inlet; 4. Sand outlet pipe.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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 obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), 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.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "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 in which A and B are satisfied at the same time. 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 mutually 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 present invention.

[0032] Please refer to Figures 1 to 4As shown, the utility model proposes a pickling reaction tank 100, which is used for pickling quartz sand. The pickling reaction tank 100 includes a tank body 1, an acid inlet component 2 and an acid outlet component 3. The tank body 1 encloses a pickling chamber 11 and a first opening 12 and a second opening 13 connected to the pickling chamber 11; the acid inlet component 2 is connected to the tank body 1, and the acid inlet component 2 is provided with an acid inlet channel and a first acid inlet 211 and a plurality of first acid outlets 221 connected to the acid inlet channel. At least part of the acid inlet component 2 is provided in the first opening 12, and the plurality of first acid outlets 221 are connected to the pickling chamber 11. The port 211 is used to supply acid liquid into the acid inlet channel, and the first acid outlet 221 is used to supply acid liquid from the acid inlet channel into the pickling chamber 11; the acid outlet component 3 is connected to the tank body 1, and the acid outlet component 3 is provided with an acid outlet channel and a second acid inlet 331 and a second acid outlet 311 connected to the acid outlet channel. At least part of the acid outlet component 3 is penetrated by the second opening 13, the second acid inlet 331 is connected to the pickling chamber 11, and the second acid inlet 331 is provided with a filtering structure. The second acid inlet 331 is used to supply the pickling chamber 11 into the acid outlet channel, and the second acid outlet 311 is used to supply acid liquid out of the acid outlet channel.

[0033] In the present embodiment, the tank body 1 is enclosed to form a pickling chamber 11, and the pickling chamber 11 is used to mix pickling liquid and quartz sand. When the pickling liquid is injected into the pickling chamber 11, the pickling liquid enters the acid inlet channel from the first acid inlet port 211 of the acid inlet component 2, then flows from the acid inlet channel to multiple first acid outlet ports 221, and flows out from multiple first acid outlet ports 221 to the pickling chamber 11. In this way, the pickling liquid can be evenly injected into the pickling chamber 11 to improve the uniformity of the mixture of the pickling liquid and the quartz sand, thereby improving the pickling efficiency of the quartz sand. After the pickling is completed, the pickling liquid enters the acid outlet channel from the second acid inlet port 331 of the acid outlet component 3, and then flows out of the pickling chamber 11 from the second acid outlet port 311. The second acid inlet port 331 is provided with a filtering structure to prevent gravel from following the pickling liquid into the acid outlet channel. This solution sets the acid inlet channel and the acid outlet channel separately to avoid the acid outlet component 3 and the filter structure being repeatedly subjected to drastic changes in pressure and temperature during acid inlet and outlet, thereby improving the stability of the acid outlet component 3 and the filter structure, reducing the possibility of damage or blockage of the acid outlet channel, reducing the failure rate of the pickling reaction tank 100, and thus ensuring the production efficiency of pickling.

[0034] In actual implementation, the tank body 1 is provided with a first opening 12 and a second opening 13 communicating with the pickling chamber 11, at least part of the acid inlet assembly 2 is provided through the first opening 12, so that the first acid inlet 211 is located outside the pickling chamber 11 and the first acid outlet 221 is located inside the pickling chamber 11, and at least part of the acid outlet assembly 3 is provided through the second opening 13, so that the second acid inlet 331 is located inside the pickling chamber 11 and the second acid outlet 311 is located outside the pickling chamber 11. The acid inlet assembly 2 is provided with a first valve corresponding to the first acid inlet 211, and the acid outlet assembly 3 is provided with a second valve corresponding to the second acid outlet 311. When the pickling liquid is injected into the pickling chamber 11, the first valve is opened and the second valve is opened. When the pickling liquid is discharged from the pickling chamber 11, the second valve is opened and the first valve is closed.

[0035] In one embodiment of the present invention, Figures 1 to 3 As shown, the acid inlet assembly 2 includes an acid inlet main pipeline 21 and a plurality of acid inlet branch pipelines 22 connected to the acid inlet main pipeline 21. The acid inlet main pipeline 21 is provided with a first acid inlet port 211, and each acid inlet branch pipeline 22 is provided with a plurality of first acid outlet ports 221. The plurality of acid inlet branch pipelines 22 are evenly spaced on both sides of the acid inlet main pipeline 21 and are arranged at an angle to the acid inlet main pipeline 21.

[0036] In this embodiment, the acid inlet main pipe 21 is provided with a first acid inlet 211 and is at least partially disposed through the first opening 12. A plurality of acid inlet branch pipes 22 are evenly spaced and disposed on both sides of the acid inlet main pipe 21 and are in communication with the acid inlet main pipe 21. The acid inlet main pipe 21 and the acid inlet branch pipes 22 are connected to form an acid inlet channel. When acid is added, the pickling liquid enters the acid inlet main pipe 21 through the first acid inlet 211, is then diverted from the acid inlet main pipe 21 to each of the acid inlet branch pipes 22, and flows out from the second acid outlet 311 of each of the acid inlet branch pipes 22 into the pickling chamber 11. This improves the coverage of the acid inlet component 2 in the pickling chamber 11, effectively improving the uniformity of the acid inlet of the pickling liquid.

[0037] In actual implementation, the acid inlet main pipe 21 and the multiple acid inlet branch pipes 22 are arranged in a fishbone shape in the axial projection of the pickling chamber 11. The acid inlet main pipe 21 is arranged in the center, and the acid inlet branch pipes 22 are arranged perpendicular to the acid inlet main pipe 21 to further improve the acid inlet uniformity of the acid inlet assembly 2.

[0038] In one embodiment of the present invention, Figure 2 As shown, the acid inlet assembly 2 further includes a multi-way joint 23 , the acid inlet main pipeline 21 includes multiple sections of main pipelines, and adjacent main pipelines and acid inlet branch pipelines 22 are connected by socket hot-melt connection through the multi-way joint 23 .

[0039] In this embodiment, the acid inlet main pipeline 21 is divided into multiple sections of main pipelines, and the multiple sections of main pipelines are arranged in sequence along the axial direction. The multi-way joint 23 can be a four-way joint or a three-way joint, and the two adjacent sections of the main pipeline are arranged at opposite ends of the four-way joint, and the other two ends of the four-way joint are respectively connected to the two acid inlet branch pipelines 22; the end of the acid inlet main pipeline 21 away from the first acid inlet port 211 is connected to the middle end of the three-way joint, and the other sections of the three-way joint are respectively connected to the two acid inlet branch pipelines 22, so as to realize the angle connection between the acid inlet main pipeline 21 and the acid inlet branch pipeline 22. The main pipeline and the acid inlet branch pipeline 22 are both connected to the multi-way joint 23 by socket hot-melt to ensure the sealing between the main pipeline and the acid inlet branch pipeline 22 and the multi-way joint 23, and to ensure that the connection between the main pipeline and the acid inlet branch pipeline 22 and the multi-way joint 23 has sufficient pressure bearing capacity.

[0040] In actual implementation, the segmented arrangement of the acid inlet main pipeline 21 can reduce the difficulty of installing the acid inlet main pipeline 21 into the pickling chamber 11. At the same time, the number of main pipelines and the size and number of acid inlet branch pipelines 22 can be selected and arranged according to the actual size of the pickling chamber 11, and are not specifically limited here.

[0041] In one embodiment of the present invention, Figures 1 to 3 As shown, multiple first acid outlets 221 are arranged at intervals along the extension direction of the acid inlet branch pipe 22; and / or, the acid inlet assembly 2 also includes a support plate 24, and the acid inlet main pipe 21 and the acid inlet branch pipe 22 are connected to the bottom wall of the tank body 1 through the support plate 24, and the support plate 24 is made of polypropylene.

[0042] In this embodiment, multiple first acid outlets 221 are arranged along the extension direction of the acid inlet branch pipe 22, thereby increasing the inflow range of the pickling solution and improving the inflow uniformity of the pickling solution. At the same time, the first acid outlet 221 is arranged towards the bottom wall of the pickling chamber 11, so that the inflow speed of the pickling solution can be increased by utilizing the effect of gravity. The acid inlet main pipe 21 and the acid inlet branch pipe 22 are supported and installed by a support plate 24 to prevent the acid inlet main pipe 21 and the acid inlet branch pipe 22 from bending under long-term use. At the same time, the setting of the support plate 24 ensures that the acid inlet main pipe 21 and the acid inlet branch pipe 22 have a certain distance from the bottom wall of the tank body 1, so as to improve the smoothness of the pickling solution flowing out of the first acid outlet 221. The support plate 24 is made of polypropylene, which has good impact resistance and stable chemical properties and can provide stable support for the acid inlet main pipe 21 and the acid inlet branch pipe 22.

[0043] In actual implementation, each acid inlet branch pipe 22 is provided with two rows of first acid outlets 221, and the two rows of first acid outlets 221 are respectively arranged on both sides of the acid inlet branch pipe 22. On the projection of the acid inlet branch pipe 22, the angle α between the line connecting the first acid outlets 221 on both sides and the center and the vertical direction can be set at 45°.

[0044] In one embodiment of the present invention, Figure 2 As shown, the diameter of the first acid outlet 221 ranges from 10 mm to 16 mm; and / or the diameter of the acid inlet branch pipe 22 ranges from 80 mm to 100 mm.

[0045] In this embodiment, if the diameter of the first acid outlet 221 is too large, the pressure loss of the pickling liquid flowing out of the first acid outlet 221 may be too large, and the distance the pickling liquid flows out of the first acid outlet 221 may be too small, affecting the uniformity of the pickling liquid flowing into the pickling chamber 11. If the diameter of the first acid outlet 221 is too small, the pickling liquid flow rate may be too small, and the pressure on the acid inlet assembly 2 may be relatively large, affecting the speed of acid inlet into the pickling chamber 11 and the service life of the acid inlet assembly 2. If the diameter of the acid inlet branch pipe 22 is too large, the flow rate of the pickling liquid in the acid inlet branch pipe 22 and the distance the pickling liquid flows out of the first outflow port may be reduced. If the diameter of the acid inlet branch pipe 22 is too small, the pressure on the acid inlet assembly 2 may be too large, affecting the service life of the acid inlet assembly 2. Optionally, the diameter of the first acid outlet 221 can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm and 16 mm; the diameter of the acid inlet branch pipe 22 can be 80 mm, 85 mm, 90 mm, 95 mm, or 100 mm.

[0046] In one embodiment of the present invention, Figure 1 and Figure 4 As shown, the acid outlet component 3 includes an acid outlet pipeline 31, an acid outlet main pipeline 32 and multiple acid outlet branch pipelines 33. The acid outlet main pipeline 32 is arranged in a ring shape. The acid outlet pipeline 31 and the multiple acid outlet branch pipelines 33 are respectively connected to the acid outlet main pipeline 32. The acid outlet pipeline 31 is arranged in the second opening 13 and is provided with a second acid outlet 311. Each acid outlet branch pipeline 33 is provided with multiple second acid inlets 331.

[0047] In this embodiment, the acid outlet branch pipe 33 is provided with multiple second acid inlets 331. During acid discharge, pickling liquid enters the acid outlet branch pipe 33 through the second acid inlets 331, then converges from the acid outlet branch pipe 33 into the acid outlet main pipe 32. Finally, it flows from the acid outlet main pipe 32 to the acid outlet pipe 31 and out through the second acid outlet 311. The acid outlet pipe 31, the acid outlet main pipe 32, and the acid outlet branch pipe 33 are connected to form an acid outlet channel. One end of each of the multiple acid outlet branch pipes 33 is connected to the acid outlet main pipe 32, and the other ends of the multiple acid outlet branch pipes 33 are arranged to spread outward. In the axial projection of the pickling chamber 11, the multiple acid outlet branch pipes 33 are all on the extended diameter of the acid outlet main pipe 32. In this way, the acid outlet branch pipes 33 can cover the axial projection of the pickling chamber 11, thereby increasing the speed at which the pickling liquid enters the acid outlet channel and, in turn, increases the speed at which the pickling liquid discharges from the pickling chamber 11.

[0048] In actual implementation, the acid outlet main pipe 32 and the acid outlet branch pipe 33 are arranged near the bottom wall of the pickling chamber 11 to facilitate the drainage of the pickling liquid in the pickling chamber 11. When the pickling reaction tank 100 is placed normally, the acid inlet main pipe 21 and the acid inlet branch pipe 22 are arranged at a position higher than the acid outlet main pipe 32 and the acid outlet branch pipe 33. Each acid outlet branch pipe 33 can be divided into multiple sections, and the multiple sections of the acid outlet branch pipe 33 can be connected by hot-melt connection. The multiple second acid inlets 331 are arranged at intervals along the extension direction of the acid outlet branch pipe 33 and at intervals along the circumferential direction of the acid outlet branch pipe 33. The acid outlet pipe 31 is passed through the second opening 13, and the second acid outlet 311 is arranged at one end of the acid outlet pipe 31 and is located outside the pickling chamber 11. The other end of the acid outlet pipe 31 is connected to the acid outlet main pipe 32. There can be two or more second openings 13, and the acid outlet pipe 31 is arranged corresponding to the second opening 13. No specific limitation is made here.

[0049] In one embodiment of the present invention, Figure 4 As shown, the filtering structure is a filter screen, which covers the second acid inlet 331 .

[0050] In this embodiment, the filtering structure is a filter screen, which is coated on the outer surface of the acid outlet branch pipe 33 to fully cover the second acid inlet 331 of the acid outlet branch pipe 33. This can not only prevent quartz sand from entering the acid outlet channel along with the pickling liquid during acid outlet, causing the acid outlet channel to be blocked, but also facilitate subsequent replacement.

[0051] In actual implementation, the filter structure may also be an acid-resistant filter element, which is provided in the acid outlet channel, and is not specifically limited here.

[0052] In one embodiment of the present invention, Figure 1 and Figure 4 As shown, the bottom wall of the tank body 1 is further provided with a mounting groove 15 , the second acid outlet 311 is provided on the bottom wall of the mounting groove 15 , and the acid outlet main pipeline 32 is provided in the mounting groove 15 .

[0053] In this embodiment, the acid outlet main pipe 32 is arranged in the mounting groove 15, and the acid outlet branch pipe 33 is arranged in the portion outside the mounting groove 15 on the bottom wall of the tank body 1, so that there is a certain height difference between the setting position of the acid outlet main pipe 32 and the setting position of the acid outlet branch pipe 33. The acid outlet branch pipe 33 can be connected to the side of the acid outlet main pipe 32 facing away from the bottom of the mounting groove 15 through an elbow. This is conducive to the flow and convergence of the pickling liquid in the acid outlet branch pipe 33 to the acid outlet main pipe 32. The second acid outlet 311 is provided on the bottom wall of the mounting groove 15, and the acid outlet pipe 31 is passed through the second opening 13 and connected to the side of the acid outlet main pipe 32 facing the bottom of the mounting groove 15. This is conducive to the pickling liquid in the acid outlet main pipe 32 flowing out through the acid outlet pipe 31.

[0054] In actual implementation, the installation groove 15 is arranged at the center of the bottom wall of the tank body 1 so as to extend the acid outlet branch pipe 33 to the surrounding areas.

[0055] In one embodiment of the present invention, Figure 1 As shown, the pickling reaction tank 100 also includes a sand outlet pipe 4, the acid outlet main pipe 32 surrounds to form a cavity, the bottom of the mounting groove 15 is provided with a third opening 14, the sand outlet pipe 4 is passed through the third opening 14, and is located in the cavity, and the sand outlet pipe 4 is used to allow the quartz sand in the pickling cavity 11 to flow out.

[0056] In this embodiment, the sand outlet pipe 4 is provided through the third opening 14. After the pickling liquid flows out of the pickling chamber 11, the pickled quartz sand can flow out of the sand outlet pipe 4. The third opening 14 is provided at the bottom of the mounting groove 15, that is, the third opening 14 is provided at the lowest point of the entire tank body 1, which facilitates the outflow of the quartz sand.

[0057] In actual implementation, the sand outlet pipe 4 is provided with a third valve. When acid is fed in or discharged, the third valve is in a closed state. When sand is discharged, the first valve and the second valve are both in a closed state, and the third valve is in an open state.

[0058] In one embodiment of the present invention, Figure 1 As shown, the bottom of the tank body 1 is arranged in a conical shape.

[0059] In this embodiment, the tapered bottom of the tank body 1 serves to guide the pickling liquid, facilitating the flow of the pickling liquid from the acid outlet branch pipe 33 into the acid outlet channel, thereby increasing the outflow rate of the pickling liquid from the pickling chamber 11. As will be appreciated, the mounting groove 15 is located at the center of the bottom of the tank body 1, so that the acid outlet branch pipe 33 can be tilted toward the acid outlet main pipe 32, with the end of the acid outlet branch pipe 33 farther from the acid outlet main pipe 32 being higher than the end closer to the acid outlet main pipe 32. This facilitates the convergence of the pickling liquid from the acid outlet branch pipe 33 to the acid outlet main pipe 32 during acid discharge.

[0060] In actual implementation, the bottom of the tank body 1 may be conical or pyramidal, which is not specifically limited here.

[0061] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pickling reaction tank, used for pickling quartz sand, characterized in that: The pickling reaction tank comprises: A tank body, the tank body enclosing a pickling chamber and a first opening and a second opening communicating with the pickling chamber; an acid inlet assembly connected to the tank body, the acid inlet assembly being provided with an acid inlet channel and a first acid inlet and a plurality of first acid outlets communicating with the acid inlet channel, at least part of the acid inlet assembly being passed through the first opening, the plurality of first acid outlets being communicated with the pickling chamber, the first acid inlet being used to supply acid solution to flow into the acid inlet channel, and the first acid outlet being used to supply acid solution to flow from the acid inlet channel into the pickling chamber; and An acid outlet component is connected to the tank body, the acid outlet component is provided with an acid outlet channel and a second acid inlet and a second acid outlet connected to the acid outlet channel, at least part of the acid outlet component is passed through the second opening, the second acid inlet is connected to the pickling chamber, the second acid inlet is provided with a filtering structure, the second acid inlet is used to supply the pickling chamber to flow into the acid outlet channel, and the second acid outlet is used to supply acid liquid to flow out of the acid outlet channel.

2. The pickling reaction tank according to claim 1, characterized in that The acid inlet assembly includes an acid inlet main pipeline and multiple acid inlet branch pipelines connected to the acid inlet main pipeline. The acid inlet main pipeline is provided with the first acid inlet port, and each of the acid inlet branch pipelines is provided with multiple first acid outlet ports. The multiple acid inlet branch pipelines are evenly spaced on both sides of the acid inlet main pipeline and are arranged at an angle to the acid inlet main pipeline.

3. The pickling reaction tank according to claim 2, characterized in that The acid inlet assembly further comprises a multi-way joint, the acid inlet main pipeline comprises multiple sections of main pipelines, and the adjacent main pipelines and the acid inlet branch pipelines are connected by socket hot-melt connection via the multi-way joint.

4. The pickling reaction tank according to claim 2, characterized in that The plurality of first acid outlets are spaced apart along the extending direction of the acid inlet branch pipe; And / or, the acid inlet assembly further includes a support plate, the acid inlet main pipeline and the acid inlet branch pipeline are connected to the bottom wall of the tank body through the support plate, and the support plate is made of polypropylene.

5. The pickling reaction tank according to claim 2, characterized in that: The diameter of the first acid outlet is in the range of 10 mm to 16 mm; And / or, the diameter of the acid inlet branch pipe ranges from 80 mm to 100 mm.

6. The pickling reaction tank according to any one of claims 1 to 5, characterized in that: The acid outlet component includes an acid outlet pipeline, an acid outlet main pipeline and multiple acid outlet branch pipelines. The acid outlet main pipeline is arranged in a ring shape. The acid outlet pipeline and the multiple acid outlet branch pipelines are respectively connected to the acid outlet main pipeline. The acid outlet pipeline is passed through the second opening and is provided with the second acid outlet. Each of the acid outlet branch pipelines is provided with multiple second acid inlets.

7. The pickling reaction tank according to claim 6, characterized in that The filtering structure is a filter screen, and the filter screen is arranged to cover the second acid inlet.

8. The pickling reaction tank according to claim 6, characterized in that The bottom wall of the tank body is further provided with a mounting groove, the second opening is provided on the bottom wall of the mounting groove, and the acid outlet main pipeline is provided in the mounting groove.

9. The pickling reaction tank according to claim 8, characterized in that The pickling reaction tank also includes a sand outlet pipe. The acid outlet main pipe is surrounded to form a cavity. The bottom of the installation groove is provided with a third opening. The sand outlet pipe is passed through the third opening and is located in the cavity. The sand outlet pipe is used to allow the quartz sand in the pickling cavity to flow out.

10. The pickling reaction tank according to any one of claims 1 to 5, characterized in that: The bottom of the tank is conical.

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