Wet-process phosphoric acid extraction device

Abstract

The utility model provides a wet-process phosphoric acid extraction device. A liquid outlet hole, a first mounting hole and a second mounting hole formed in an extraction tank of the wet-process phosphoric acid extraction device are all communicated with an extraction cavity, the liquid outlet hole is arranged close to the top of the extraction tank, and an extraction agent inlet pipe and a to-be-extracted liquid inlet pipe are both communicated with the extraction cavity; a first driving part of the first stirring assembly is arranged at the bottom of the extraction tank, and the driving end of the first driving part is connected to a first shearing stirring net through a first mounting hole; a second driving part of the second stirring assembly is arranged at the top of the extraction tank, the driving end of the second driving part is connected to a second shearing and stirring net through a second mounting hole, the second shearing and stirring net is located above the first shearing and stirring net, and the rotating speed of the first driving part is larger than that of the second driving part. According to the wet-process phosphoric acid extraction device, by arranging the first shearing and stirring net and the second shearing and stirring net, emulsification and demulsification of a mixed solution of a to-be-extracted solution and an extraction agent are achieved, and therefore the wet-process phosphoric acid extraction efficiency and effect are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of phosphoric acid production, and in particular to a wet phosphoric acid extraction device. Background Art

[0002] Phosphoric acid is the basic raw material for phosphorus chemical products. With the continuous development of phosphorus chemical industry, the use and dosage of phosphoric acid have greatly increased. Wet phosphoric acid purification is often used for industrial extraction of phosphoric acid. At present, the method of wet phosphoric acid purification mainly adopts solvent extraction. Solvent extraction has the advantages of low energy consumption, low pollution and low cost. The traditional wet phosphoric acid purification device adopts paddle extraction. When paddle extraction shears the mixed liquid of the extracted liquid and the extractant, the droplets of the mixed liquid are of different sizes, resulting in uneven mixing of the extracted liquid and the extractant.

[0003] To this end, as disclosed in Chinese patent number CN 202144452 U, an extraction device for wet-process phosphoric acid refining realizes rapid and uniform mixing of the organic phase and the aqueous phase in the tank through a suction composite stirring paddle and a dual-phase concentric flow guide pipe in the extraction tank, prolongs the mixing time, and then accelerates demulsification and phase separation through a suspended demulsifier.

[0004] However, the design of the above-mentioned extraction device for wet phosphoric acid refining has the following problems: the structure of the suction-type composite stirring paddle is still in the shape of a paddle, resulting in that when the mixed liquid is stirred, part of the mixed liquid cannot be sheared sufficiently and flows into the clarification chamber, thereby affecting the efficiency and effect of the extraction. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a wet phosphoric acid extraction device that improves the efficiency and effect of wet phosphoric acid extraction.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A wet phosphoric acid extraction device, comprising:

[0008] An extraction tank, wherein a liquid outlet, a first mounting hole, a second mounting hole and an extraction chamber are formed in the extraction tank, the liquid outlet, the first mounting hole and the second mounting hole are all connected to the extraction chamber, and the liquid outlet is arranged adjacent to the top of the extraction tank;

[0009] A feed assembly, the feed assembly comprising an extractant inlet pipe and an extractant inlet pipe; the extractant inlet pipe and the extractant inlet pipe are both connected to the extraction chamber;

[0010] A stirring mechanism, the stirring mechanism comprising a first stirring component and a second stirring component; the first stirring component comprising a first driving member and a first shear stirring net; the first driving member is arranged at the bottom of the extraction tank, and the driving end of the first driving member is connected to the first shear stirring net through the first mounting hole; the second stirring component comprises a second driving member and a second shear stirring net; the second driving member is arranged at the top of the extraction tank, and the driving end of the second driving member is connected to the second shear stirring net through the second mounting hole, the second shear stirring net is located above the first shear stirring net, and the rotation speed of the first driving member is greater than the rotation speed of the second driving member;

[0011] The first shearing and stirring net is respectively arranged corresponding to the inlet pipe for the liquid to be extracted and the inlet pipe for the extractant.

[0012] In one embodiment, the first driving member includes a first driving motor and a first rotating shaft, the rotating shaft of the first driving motor is fixed to the first rotating shaft, the first rotating shaft is sealingly rotatably connected to the extraction tank through the first mounting hole, and the first shear stirring net is fixed to the first rotating shaft.

[0013] In one embodiment, the second driving member includes a second driving motor and a second rotating shaft, the rotating shaft of the second driving motor is fixed to the second rotating shaft, the second rotating shaft is sealingly rotatably connected to the extraction tank through the second mounting hole, and the second shear stirring net is fixed to the second rotating shaft.

[0014] In one embodiment, the first shear stirring net includes a plurality of first cross bars and a plurality of first vertical bars, wherein the first cross bars are arranged transversely, the first vertical bars are arranged longitudinally, and the first cross bars and the first vertical bars are arranged crosswise with each other.

[0015] In one embodiment, the second shear stirring net includes a plurality of second cross bars and a plurality of second vertical bars, the second cross bars are arranged transversely, the second vertical bars are arranged longitudinally, and the second cross bars and the second vertical bars are arranged crosswise with each other.

[0016] In one embodiment, the extractant inlet pipe and the extractant inlet pipe are arranged opposite to each other.

[0017] In one embodiment, the wet phosphoric acid extraction device also includes a lower polymer orifice plate, which is arranged below the first shear stirring net, and the periphery of the lower polymer orifice plate is arranged in contact with the inner wall of the extraction chamber, and a plurality of first polymer holes are opened on the lower polymer orifice plate.

[0018] In one embodiment, the wet phosphoric acid extraction device also includes an upper polymer orifice plate, which is arranged below the second shear stirring net, and the periphery of the upper polymer orifice plate is arranged in contact with the inner wall of the extraction chamber, and a plurality of second polymer holes are opened on the upper polymer orifice plate.

[0019] In one embodiment, the wet phosphoric acid extraction device further includes an annular enclosure, which is installed on the inner circumferential wall of the extraction chamber to form an overflow weir, a gap is left between the upper end of the annular enclosure and the top of the extraction chamber, and the overflow weir is connected to the liquid outlet.

[0020] In one embodiment, the inlet pipe for the liquid to be extracted extends into the extraction chamber, and a plurality of first overflow holes are formed at the end of the inlet pipe for the liquid to be extracted located in the extraction chamber.

[0021] In one embodiment, the extractant inlet pipe extends into the extraction chamber, and a plurality of second overflow holes are formed at the end of the extractant inlet pipe located in the extraction chamber.

[0022] In one of the embodiments, the wet phosphoric acid extraction device further includes a cleaning inlet hole and an inlet hole cover plate, the cleaning inlet hole is connected to the extraction chamber, and the inlet hole cover plate is clamped at the cleaning inlet hole.

[0023] In one of the embodiments, the wet phosphoric acid extraction device further comprises a support frame, wherein the support frame is supported and fixed to the bottom of the extraction tank, and the first driving member is mounted and fixed to the support frame.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] 1) Since the extractant inlet pipe and the liquid to be extracted inlet pipe are both connected to the extraction chamber, the liquid to be extracted and the extractant are respectively passed into the extraction chamber through the liquid to be extracted inlet pipe and the extractant inlet pipe, and the liquid to be extracted and the extractant are mixed to form a mixed liquid; since the first driving member is arranged at the bottom of the extraction tank, the driving end of the first driving member is connected to the first shear stirring net through the first mounting hole, so that the first shear stirring net is located in the extraction chamber, when the first driving member drives the first shear stirring net to rotate, the mixed liquid of the liquid to be extracted and the extractant is stirred to ensure the adequacy of the mixing of the liquid to be extracted and the extractant, and when the first shear stirring net shears the mixed liquid of the liquid to be extracted and the extractant, the uniformity of the droplet particles of the mixed liquid of the liquid to be extracted and the extractant is ensured, thereby improving the uniformity of the mixing of the liquid to be extracted and the extractant; and since the second driving member is arranged at the extraction chamber, the first driving member is connected to the first shear stirring net through the first mounting hole, so that the first shear stirring net is located in the extraction chamber. The top of the tank is connected to the second shear stirring net by the driving end of the second driving member through the second mounting hole, so that the second shear stirring net is located in the extraction chamber and the second shear stirring net is located above the first shear stirring net. The second driving member rotates to rotate the second shear stirring net, and the mixed liquid passing through the first shear stirring net flows upward through the second shear stirring net to complete the second shearing and stirring of the mixed liquid. Since the rotation speed of the first driving member is greater than the rotation speed of the second driving member, that is, the rotation speed of the first shear stirring net is greater than the rotation speed of the second shear stirring net, the mixed liquid is emulsified by the first shear stirring net and demulsified by the second shear stirring net. After two times of shearing and stirring, the uniformity of shearing and sufficient mixing of the mixed liquid of the extractant and the extractant are achieved, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0026] 2) Since the first driving member is arranged at the bottom of the extraction chamber and the second driving member is arranged at the top of the extraction tank, the first shear stirring net and the second shear stirring net are located in the same extraction chamber, and the emulsification and demulsification of the liquid to be extracted and the extractant in the same tank are respectively achieved through the first shear stirring net and the second shear stirring net, thereby improving the efficiency and effect of wet phosphoric acid extraction, and there is no need to perform emulsification and demulsification in two tanks, thereby simplifying the structure of the wet phosphoric acid extraction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic structural diagram of a wet phosphoric acid extraction device according to an embodiment of the present disclosure;

[0029] Figure 2 for Figure 1A cross-sectional view of a wet phosphoric acid extraction device in one direction shown;

[0030] Figure 3 for Figure 1 A cross-sectional view of the wet phosphoric acid extraction device in another direction;

[0031] Figure 4 for Figure 1 A cross-sectional view of a portion of the structure at the bottom of the extraction tank is shown.

[0032] Reference numerals: 10, wet phosphoric acid extraction device; 100, extraction tank; 110, extraction chamber; 120, liquid outlet; 130, first mounting hole; 140, second mounting hole; 210, inlet pipe for liquid to be extracted; 211, first overflow hole; 220, inlet pipe for extractant; 221, second overflow hole; 311, first driving member; 311a, first driving motor; 311b, first rotating shaft; 312, first shear stirring net; 312a, first cross bar; 312b, first vertical rod; 321, second driving member; 321a, second driving motor; 321b, second rotating shaft; 322, second shear stirring net; 322a, second cross bar; 322b, second vertical rod; 400, lower aggregation hole plate; 410, first aggregation hole; 500, upper aggregation hole plate; 510, second aggregation hole; 600, annular enclosure; 610, overflow weir; 700, cleaning inlet hole; 800, inlet hole cover plate; 900, support frame. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0037] like Figures 1 to 4 As shown, a wet phosphoric acid extraction device 10 of an embodiment includes an extraction tank 100, a feed assembly and a stirring mechanism; a liquid outlet 120, a first mounting hole 130, a second mounting hole 140 and an extraction chamber 110 are formed in the extraction tank 100; the liquid outlet 120, the first mounting hole 130 and the second mounting hole 140 are all connected to the extraction chamber 110, and the liquid outlet 120 is arranged near the top of the extraction tank 100; the feed assembly includes an extractant inlet pipe 210 and an extractant inlet pipe 220; the extractant inlet pipe 220 and the extractant inlet pipe 210 are both connected to the extraction chamber 110; the stirring mechanism includes a first stirring assembly and a second stirring assembly; the first stirring assembly includes a first driving member 311 and a first shear stirring net 312; the first driving member 311 is arranged at the bottom of the extraction tank 100, and the driving end of the first driving member 311 is connected to the first shear stirring net 312 through the first mounting hole 130; the second stirring assembly includes a second driving member 321 and a second shear stirring net 322; the second driving member 321 is arranged at the top of the extraction tank 100, and the driving end of the second driving member 321 is connected to the second shear stirring net 322 through the second mounting hole 140, and the second shear stirring net 322 is located above the first shear stirring net 312, and the rotation speed of the first driving member 311 is greater than the rotation speed of the second driving member 321; the first shear stirring net 312 is respectively arranged corresponding to the inlet pipe 210 of the extracted liquid and the inlet pipe 220 of the extractant.

[0038] It can be understood that, since the extractant inlet pipe 220 and the liquid to be extracted inlet pipe 210 are both connected to the extraction chamber 110, the liquid to be extracted and the extractant are respectively introduced into the extraction chamber 110 through the liquid to be extracted inlet pipe 210 and the extractant inlet pipe 220, and the liquid to be extracted and the extractant are mixed to form a mixed liquid; since the first driving member 311 is arranged at the bottom of the extraction tank 100, the driving end of the first driving member 311 is connected to the first shear stirring net 312 through the first mounting hole 130, so that the first shear stirring net 312 is located in the extraction chamber 110, when the first driving member 311 drives the first shear stirring net 312 to rotate, the mixed liquid of the liquid to be extracted and the extractant is stirred to ensure the adequacy of the mixing of the liquid to be extracted and the extractant. When the first shear stirring net 312 shears the mixed liquid of the liquid to be extracted and the extractant, the uniformity of the droplet particles of the mixed liquid of the liquid to be extracted and the extractant is ensured, thereby improving the uniformity of the mixing of the liquid to be extracted and the extractant; and since the second driving member 321 is arranged at the extraction chamber 100, the first driving member 321 is connected to the first shear stirring net 312 through the first mounting hole 130, so that the first shear stirring net 312 is located in the extraction chamber 110. At the top of the tank 100, the driving end of the second driving member 321 is connected to the second shear stirring net 322 through the second mounting hole 140, so that the second shear stirring net 322 is located in the extraction chamber 110, and the second shear stirring net 322 is located above the first shear stirring net 312. The second driving member 321 rotates to rotate the second shear stirring net 322, and the mixed liquid passing through the first shear stirring net 312 flows upward through the second shear stirring net 322, completing the second shearing and stirring of the mixed liquid. In addition, since the rotation speed of the first driving member 311 is greater than the rotation speed of the second driving member 321, that is, the rotation speed of the first shear stirring net 312 is greater than the rotation speed of the second shear stirring net 322, so that the mixed liquid is emulsified through the first shear stirring net 312 and demulsified through the second shear stirring net 322. After two times of shearing and stirring, the uniformity of shearing and the sufficiency of mixing of the mixed liquid of the extractant and the extractant are achieved, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0039] It can be understood that, since the first driving member 311 is arranged at the bottom of the extraction chamber 110 and the second driving member 321 is arranged at the top of the extraction tank 100, the first shear stirring net 312 and the second shear stirring net 322 are located in the same extraction chamber 110, and the emulsification and demulsification of the extractant and the extractant in the same tank body are respectively achieved through the first shear stirring net 312 and the second shear stirring net 322, thereby improving the efficiency and effect of wet phosphoric acid extraction, and there is no need to perform emulsification and demulsification in two tank bodies, thereby simplifying the structure of the wet phosphoric acid extraction device 10.

[0040] Furthermore, if Figure 2As shown, in one embodiment, the first stirring component includes a first driving member 311 and a plurality of first shear stirring nets 312, and each first shear stirring net 312 is sequentially layered on the first driving member 311; the second stirring component includes a second driving member 321 and a plurality of second shear stirring nets 322, and each second shear stirring net 322 is sequentially layered on the second driving member 321.

[0041] It can be understood that, since each first shearing and stirring net 312 is sequentially arranged on the first driving member 311, the first driving member 311 rotates to rotate each first shearing and stirring net 312, and the mixed liquid of the liquid to be extracted and the extractant passes through each first shearing and stirring net 312 in sequence. During the stirring of each first shearing and stirring net 312, the liquid to be extracted and the extractant are uniformly mixed, that is, multiple emulsifications are achieved. After multiple emulsifications, the liquid to be extracted and the extractant are mixed more fully, thereby improving the uniformity of the mixing of the liquid to be extracted and the extractant. In addition, since each second shearing and stirring net 322 is sequentially arranged on the second driving member 321, the second driving member 321 rotates to rotate each second shearing and stirring net 322, and the emulsified mixed liquid passes through each second shearing and stirring net 322 in sequence, completing multiple demulsification of the mixed liquid, achieving multiple emulsification and multiple demulsification of the mixed liquid during wet phosphoric acid extraction, effectively ensuring the uniformity of shearing of the mixed liquid and the sufficiency of mixing, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0042] like Figure 2 As shown, in one embodiment, the first driving member 311 includes a first driving motor 311a and a first rotating shaft 311b, the rotating shaft of the first driving motor 311a is fixed to the first rotating shaft 311b, the first rotating shaft 311b is sealed and rotatably connected to the extraction tank 100 through the first mounting hole 130, and the first shear stirring net 312 is fixed to the first rotating shaft 311b. It can be understood that when the first driving motor 311a is driven, the first rotating shaft 311b is rotated, and the first rotating shaft 311b drives the first shear stirring net 312 to rotate, and the mixing liquid is stirred and sheared by the stirring and shearing of the first shear stirring net 312, so that the sufficiency of stirring and the uniformity of shearing are improved, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0043] Likewise, if Figure 2As shown, in one embodiment, the second driving member 321 includes a second driving motor 321a and a second rotating shaft 321b, the rotating shaft of the second driving motor 321a is fixed to the second rotating shaft 321b, the second rotating shaft 321b is sealed and rotatably connected to the extraction tank 100 through the second mounting hole 140, the second shear stirring net 322 is fixed to the second rotating shaft 321b, the second driving motor 321a drives the second shear stirring net 322 to rotate, so as to achieve further stirring and shearing of the mixed liquid after passing through the first shear stirring net 312, thereby ensuring sufficient stirring of the mixed liquid and uniformity of shearing, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0044] Furthermore, in one of the embodiments, a sealing rotating ring is additionally provided between the first rotating shaft 311b and the first mounting hole 130, which, on the one hand, prevents the mixed liquid of the extractant and the extractant from leaking from the gap between the first rotating shaft 311b and the first mounting hole 130, and on the other hand, ensures that the first rotating shaft 311b can rotate normally, thereby ensuring the reliability of the operation of the first rotating shaft 311b.

[0045] Similarly, in one of the embodiments, a sealing rotating ring is additionally provided between the second rotating shaft 321b and the second mounting hole 140, which, on the one hand, prevents the demulsified mixed liquid from leaking from the gap between the second rotating shaft 321b and the second mounting hole 140, and on the other hand, ensures that the second rotating shaft 321b can rotate normally, thereby ensuring the reliability of the operation of the second rotating shaft 321b.

[0046] In one embodiment, the driving speed of the first driving motor 311a is set to 50-80 rpm, and the driving speed of the second driving motor 321a is set to 20-30 rpm. It can be understood that the driving speed of the first driving motor 311a is set to 50-80 rpm, so that the mixed liquid of the liquid to be extracted and the extractant passes through the first shear stirring net 312, and the liquid to be extracted and the extractant are mixed evenly during the stirring and shearing of the first shear stirring net 312. Relative to the driving speed of the second driving motor 321a, within the range of 50-80 rpm, it is beneficial to uniformly mix the liquid to be extracted and the extractant, and realize the emulsification process; the mixed liquid of the liquid to be extracted and the extractant after emulsification enters the second shear stirring net 322 with a lower speed than the first driving motor 311a for shearing and stirring, and realizes the demulsification process.

[0047] like Figure 2As shown, in one embodiment, the first shearing and stirring net 312 includes a plurality of first horizontal bars 312a and a plurality of first vertical bars 312b, each first horizontal bar 312a is arranged horizontally, each first vertical bar 312b is arranged longitudinally, and each first horizontal bar 312a and each first vertical bar 312b are arranged crosswise. It can be understood that each first horizontal bar 312a and each first vertical bar 312b are arranged crosswise, so that the first shearing and stirring net 312 is formed with a plurality of first mesh holes, and the extraction liquid and the extraction agent are sheared through the first mesh holes after being mixed. Since the plurality of first mesh holes are evenly distributed, the uniformity of the shearing of the mixed liquid is ensured, thereby more effectively achieving the emulsification of the extraction liquid and the extraction agent.

[0048] Likewise, if Figure 2 As shown, in one embodiment, the second shearing and stirring net 322 includes a plurality of second cross bars 322a and a plurality of second vertical bars 322b, each second cross bar 322a is arranged horizontally, each second vertical bar 322b is arranged longitudinally, and each second cross bar 322a and each second vertical bar 322b are arranged crosswise. It can be understood that each second cross bar 322a and each second vertical bar 322b are arranged crosswise, so that the second shearing and stirring net 322 is formed with a plurality of second meshes, and the liquid to be extracted and the extractant are sheared through the second meshes after emulsification. Since the plurality of second meshes are evenly distributed, the uniformity of shearing of the emulsified mixed liquid is ensured, thereby achieving demulsification of the mixed liquid of the liquid to be extracted and the extractant.

[0049] In one embodiment, the extractant inlet pipe 220 is arranged opposite to the liquid inlet pipe 210 to ensure that the extractant and the liquid can enter the extraction chamber 110 at the same time, and ensure that the extractant and the liquid are mixed evenly, thereby improving the efficiency of wet phosphoric acid extraction.

[0050] like Figure 2 As shown, in one embodiment, the wet phosphoric acid extraction device 10 further includes a lower polymerizing orifice plate 400, which is disposed below the first shearing and stirring net 312, and the periphery of the lower polymerizing orifice plate 400 is arranged in contact with the inner wall of the extraction chamber 110, and a plurality of first polymerizing holes 410 are provided on the lower polymerizing orifice plate 400. It can be understood that the lower polymerizing orifice plate 400 is disposed below the first shearing and stirring net 312, and the lower polymerizing orifice plate 400 is arranged in parallel with the first shearing and stirring net 312. Since the liquid to be extracted and the extractant are mixed and then pass through the lower polymerizing orifice plate 400, the mixed liquid of the liquid to be extracted and the extractant is polymerized after passing through the lower polymerizing orifice plate 400, and then the mixed liquid is sheared by the first shearing and stirring net 312 to disperse it again, thereby increasing the specific surface area of ​​the two phases of the liquid to be extracted and the extractant, ensuring that the liquid to be extracted and the extractant are in more sufficient contact, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0051] like Figure 2As shown, in one embodiment, the wet phosphoric acid extraction device 10 further includes an upper polymerizing orifice plate 500, which is disposed below the second shearing and stirring net 322, and the periphery of the upper polymerizing orifice plate 500 is disposed in contact with the inner wall of the extraction chamber 110. It can be understood that the mixed solution of the extractant and the extractant passes through the upper polymerizing orifice plate 500 and polymerizes again, and under the shearing and stirring of the second shearing and stirring net 322, the mixed solution of the extractant and the extractant is demulsified, which is beneficial to shortening the phase separation time of the mixed solution, thereby improving the efficiency of wet phosphoric acid extraction.

[0052] In one embodiment, a plurality of first polymer holes 410 are provided on the lower polymer hole plate 400, and the plurality of first polymer holes 410 are evenly arranged on the lower polymer hole plate 400, so as to ensure that the mixed liquid of the extract and the extractant can evenly enter the first shear stirring net 312, thereby effectively improving the efficiency and effect of emulsification of the mixed liquid of the extract and the extractant.

[0053] In one embodiment, a plurality of second polymer holes 510 are provided on the upper polymer hole plate 500, and the plurality of second polymer holes 510 are evenly arranged on the upper polymer hole plate 500, so as to ensure that the mixed liquid of the extract and the extractant can evenly enter the second shear stirring net 322, thereby effectively improving the efficiency and effect of demulsification of the mixed liquid of the extract and the extractant.

[0054] like Figure 1 and Figure 2 As shown, in one embodiment, the wet phosphoric acid extraction device further includes an annular enclosure 600, which is installed on the inner peripheral wall of the extraction chamber 110 to form an overflow weir 610, and a gap is left between the upper end of the annular enclosure 600 and the top of the extraction chamber 110, and the overflow weir 610 is connected to the liquid outlet 120. It can be understood that the cross-section of the annular enclosure 600 is L-shaped, and the L-shaped annular enclosure 600 and the inner side wall of the extraction chamber 110 form an overflow weir 610. Since there is a gap between the upper end of the annular enclosure 600 and the top of the extraction chamber 110, the mixed liquid after demulsification flows into the annular enclosure 600 through the gap, enters the overflow weir 610, and finally flows out from the liquid outlet 120.

[0055] In one embodiment, the liquid inlet pipe 210 extends into the extraction chamber 110 , and a plurality of first overflow holes 211 are formed at the end of the liquid inlet pipe 210 located in the extraction chamber 110 , so that the liquid to be extracted flows into the extraction chamber 110 evenly.

[0056] In one embodiment, the extractant inlet pipe 220 extends into the extraction chamber 110, and a plurality of second overflow holes 221 are provided at the end of the extractant inlet pipe 220 located in the extraction chamber 110, so that the extractant flows into the extraction chamber 110 evenly, ensuring that the extractant contacts the liquid to be extracted more fully, thereby improving the uniformity of mixing the extractant and the liquid to be extracted.

[0057] Furthermore, if Figure 2 and Figure 3 As shown, in one embodiment, the liquid to be extracted inlet pipe 210 is located in the extraction chamber 110 and is connected to a plurality of first branch pipes, each of which is provided with a plurality of first overflow holes, so that the liquid to be extracted can flow into the extraction chamber 110 evenly from the first overflow holes and the first overflow holes 211 at the same time, thereby shortening the time for injecting the liquid to be extracted, thereby improving the efficiency of the liquid to be extracted entering the extraction chamber 110.

[0058] Likewise, if Figure 2 and Figure 4 As shown, in one embodiment, the extractant inlet pipe 220 is located in the extraction chamber 110 and is connected to a plurality of second branch pipes, each of which is provided with a plurality of second overflow holes, so that the extractant can flow evenly into the extraction chamber 110 from the second overflow hole and the second overflow hole 221 at the same time, thereby shortening the time for injecting the extractant and thus improving the efficiency of the extractant entering the extraction chamber 110.

[0059] In one embodiment, the wet phosphoric acid extraction device 10 further includes a cleaning inlet 700 and an inlet cover 800. The cleaning inlet 700 is connected to the extraction chamber 110. The cleaning inlet 700 is used by the operator to repair and clean the inside of the wet phosphoric acid extraction device 10 to ensure the cleanliness of the extraction chamber 110 and the normal operation of the device. The inlet cover 800 is clamped at the cleaning inlet 700. During the phosphoric acid extraction, the inlet cover 800 needs to close the cleaning inlet 700 to prevent the extract and the extractant from overflowing and affecting the effect of the wet phosphoric acid extraction.

[0060] In one embodiment, the wet phosphoric acid extraction device 10 further includes a support frame 900, which is supported and fixed to the bottom of the extraction tank 100, and the first driving member 311 is installed and fixed to the support frame 900 to ensure the stability of the first driving member 311 during operation and ensure the normal operation of the wet phosphoric acid extraction.

[0061] Compared with the prior art, the present invention has at least the following advantages:

[0062] 1) Since the extractant inlet pipe 220 and the liquid to be extracted inlet pipe 210 are both connected to the extraction chamber 110, the liquid to be extracted and the extractant are respectively introduced into the extraction chamber 110 through the liquid to be extracted inlet pipe 210 and the extractant inlet pipe 220, and the liquid to be extracted and the extractant are mixed to form a mixed liquid; since the first driving member 311 is arranged at the bottom of the extraction tank 100, the driving end of the first driving member 311 is connected to the first shear stirring net 312 through the first mounting hole 130, so that the first shear stirring net 312 is located in the extraction chamber 110, when the first driving member 311 drives the first shear stirring net 312 to rotate, the mixed liquid of the liquid to be extracted and the extractant is stirred to ensure the adequacy of the mixing of the liquid to be extracted and the extractant, and when the first shear stirring net 312 shears the mixed liquid of the liquid to be extracted and the extractant, the uniformity of the droplet particles of the mixed liquid of the liquid to be extracted and the extractant is ensured, thereby improving the uniformity of the mixing of the liquid to be extracted and the extractant; and since the second driving member 321 is arranged at the extraction tank 1 00, the driving end of the second driving member 321 is connected to the second shear stirring net 322 through the second mounting hole 140, so that the second shear stirring net 322 is located in the extraction chamber 110, and the second shear stirring net 322 is located above the first shear stirring net 312. The second driving member 321 rotates to rotate the second shear stirring net 322, and the mixed liquid passing through the first shear stirring net 312 flows upward through the second shear stirring net 322 to complete the second shearing and stirring of the mixed liquid; and because the rotation speed of the first driving member 311 is greater than the rotation speed of the second driving member 321, that is, the rotation speed of the first shear stirring net 312 is greater than the rotation speed of the second shear stirring net 322, so that the mixed liquid is emulsified through the first shear stirring net 312 and demulsified through the second shear stirring net 322. After two times of shearing and stirring, the uniformity of shearing and the sufficiency of mixing of the mixed liquid of the extractant and the extractant are achieved, thereby improving the efficiency and effect of wet phosphoric acid extraction.

[0063] 2) Since the first driving member 311 is arranged at the bottom of the extraction chamber 110 and the second driving member 321 is arranged at the top of the extraction tank 100, the first shear stirring net 312 and the second shear stirring net 322 are located in the same extraction chamber 110, and the emulsification and demulsification of the extractant and the extractant in the same tank are respectively achieved by the first shear stirring net 312 and the second shear stirring net 322, thereby improving the efficiency and effect of the wet phosphoric acid extraction, and there is no need to perform emulsification and demulsification in two tanks, thereby simplifying the structure of the wet phosphoric acid extraction device 10.

[0064] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A wet phosphoric acid extraction device, characterized in that: include: An extraction tank (100), wherein a liquid outlet hole (120), a first mounting hole (130), a second mounting hole (140) and an extraction chamber (110) are formed in the extraction tank (100), the liquid outlet hole (120), the first mounting hole (130) and the second mounting hole (140) are all connected to the extraction chamber (110), and the liquid outlet hole (120) is arranged adjacent to the top of the extraction tank (100); A feed component, the feed component comprising an extractant inlet pipe (210) and an extractant inlet pipe (220); the extractant inlet pipe (220) and the extractant inlet pipe (210) are both connected to the extraction chamber (110); A stirring mechanism, the stirring mechanism comprising a first stirring component and a second stirring component; the first stirring component comprising a first driving member (311) and a first shear stirring net (312); the first driving member (311) is arranged at the bottom of the extraction tank (100), and the driving end of the first driving member (311) is connected to the first shear stirring net (312) through the first mounting hole (130); the second stirring component comprises a second driving member (321) and a second shear stirring net (322); the second driving member (321) is arranged at the top of the extraction tank (100), and the driving end of the second driving member (321) is connected to the second shear stirring net (322) through the second mounting hole (140), and the second shear stirring net (322) is located above the first shear stirring net (312), and the rotation speed of the first driving member (311) is greater than the rotation speed of the second driving member (321); The first shearing and stirring net (312) is respectively arranged corresponding to the inlet pipe (210) for the liquid to be extracted and the inlet pipe (220) for the extractant.

2. The wet phosphoric acid extraction device according to claim 1, characterized in that: The first driving member (311) comprises a first driving motor (311a) and a first rotating shaft (311b); the rotating shaft of the first driving motor (311a) is fixed to the first rotating shaft (311b); the first rotating shaft (311b) is sealingly rotatably connected to the extraction tank (100) via the first mounting hole (130); and the first shear stirring net (312) is fixed to the first rotating shaft (311b).

3. The wet phosphoric acid extraction device according to claim 1, characterized in that: The second driving member (321) comprises a second driving motor (321a) and a second rotating shaft (321b), wherein the rotating shaft of the second driving motor (321a) is fixed to the second rotating shaft (321b), the second rotating shaft (321b) is sealingly rotatably connected to the extraction tank (100) via the second mounting hole (140), and the second shear stirring net (322) is fixed to the second rotating shaft (321b).

4. The wet phosphoric acid extraction device according to claim 1, characterized in that: The first shearing and stirring net (312) comprises a plurality of first transverse bars (312a) and a plurality of first vertical bars (312b), each of the first transverse bars (312a) is arranged transversely, each of the first vertical bars (312b) is arranged longitudinally, and each of the first transverse bars (312a) and each of the first vertical bars (312b) are arranged crosswise with each other; and / or, The second shearing and stirring net (322) comprises a plurality of second horizontal bars (322a) and a plurality of second vertical bars (322b), each of the second horizontal bars (322a) is arranged horizontally, each of the second vertical bars (322b) is arranged vertically, and each of the second horizontal bars (322a) and each of the second vertical bars (322b) are arranged crosswise with each other; and / or, The extractant inlet pipe (220) is arranged opposite to the extractant inlet pipe (210).

5. The wet phosphoric acid extraction device according to claim 1, characterized in that: The wet phosphoric acid extraction device further comprises a lower polymerized perforated plate (400), wherein the lower polymerized perforated plate (400) is arranged below the first shear stirring net (312), and the periphery of the lower polymerized perforated plate (400) is arranged in contact with the inner wall of the extraction chamber (110), and a plurality of first polymerized holes (410) are formed on the lower polymerized perforated plate (400).

6. The wet phosphoric acid extraction device according to claim 1, characterized in that: The wet phosphoric acid extraction device further comprises an upper polymeric perforated plate (500), wherein the upper polymeric perforated plate (500) is arranged below the second shear stirring net (322), and the periphery of the upper polymeric perforated plate (500) is arranged in contact with the inner wall of the extraction chamber (110), and a plurality of second polymeric holes (510) are formed on the upper polymeric perforated plate (500).

7. The wet phosphoric acid extraction device according to claim 1, characterized in that: The wet phosphoric acid extraction device further comprises an annular enclosure (600), wherein the annular enclosure (600) is mounted on the inner peripheral wall of the extraction chamber (110) to form an overflow weir (610), a gap is left between the upper end of the annular enclosure (600) and the top of the extraction chamber (110), and the overflow weir (610) is connected to the liquid outlet (120).

8. The wet phosphoric acid extraction device according to claim 1, characterized in that: The inlet pipe (210) for the liquid to be extracted extends into the extraction chamber (110), and a plurality of first overflow holes (211) are provided at the end of the inlet pipe (210) for the liquid to be extracted located in the extraction chamber (110); and / or, The extractant inlet pipe (220) extends into the extraction chamber (110), and a plurality of second overflow holes (221) are provided at the end of the extractant inlet pipe (220) located in the extraction chamber (110).

9. The wet phosphoric acid extraction device according to claim 1, characterized in that: The wet phosphoric acid extraction device further comprises a cleaning inlet hole (700) and an inlet hole cover plate (800), wherein the cleaning inlet hole (700) is connected to the extraction chamber (110), and the inlet hole cover plate (800) is clamped at the cleaning inlet hole (700).

10. The wet phosphoric acid extraction device according to claim 1, characterized in that: The wet phosphoric acid extraction device further comprises a support frame (900), wherein the support frame (900) is supported and fixed on the bottom of the extraction tank (100), and the first driving member (311) is installed and fixed on the support frame (900).

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