阅读说明：本技术 一种湿法磷酸提纯处理装置 (Wet process phosphoric acid purification processing apparatus ) 是由 吴庭 张柯柯 张幸定 叶天雄 田希鹏 于 2021-09-24 设计创作，主要内容包括：本申请实施例提供一种湿法磷酸提纯处理装置,涉及磷酸生产设备技术领域。该湿法磷酸提纯处理装置包括：支架支撑机构、进料机构、碳化硅膜过滤器和清液收集机构。所述支架支撑机构包括底板、底部支架、顶板和顶部支架,所述底板安装于所述底部支架顶部,所述顶部支架固定设置于所述底板顶部,所述顶板安装于所述顶部支架顶部,所述进料机构包括供料泵、循环泵、第一压力表、第二压力表、第一连接管、进料管和浓缩液出液管。经过碳化硅膜过滤器过滤后,料液中的杂质被去除,清液通过第二连接管进入至收集罐内部收集,打开第四阀门,收集罐内部的清液从清液出液管排出；浓液则通过浓缩液出液管流出,实现磷酸中的杂质高效分离。(The embodiment of the application provides a wet-process phosphoric acid purification treatment device, and relates to the technical field of phosphoric acid production equipment. This wet process phosphoric acid purification processing apparatus includes: the device comprises a support supporting mechanism, a feeding mechanism, a silicon carbide film filter and a clear liquid collecting mechanism. The support supporting mechanism comprises a bottom plate, a bottom support, a top plate and a top support, wherein the bottom plate is installed at the top of the bottom support, the top support is fixedly arranged at the top of the bottom plate, the top plate is installed at the top of the top support, and the feeding mechanism comprises a feeding pump, a circulating pump, a first pressure gauge, a second pressure gauge, a first connecting pipe, a feeding pipe and a concentrated solution drain pipe. After being filtered by the silicon carbide film filter, impurities in the feed liquid are removed, clear liquid enters the collecting tank through the second connecting pipe to be collected, the fourth valve is opened, and the clear liquid in the collecting tank is discharged from the clear liquid outlet pipe; the concentrated solution flows out through the concentrated solution outlet pipe, and the high-efficiency separation of impurities in the phosphoric acid is realized.)

1. The utility model provides a phosphoric acid purification processing apparatus by wet process which characterized in that includes:

the support supporting mechanism (10), the support supporting mechanism (10) comprises a bottom plate (110), a bottom support (120), a top plate (130) and a top support (140), the bottom plate (110) is mounted on the top of the bottom support (120), the top support (140) is fixedly arranged on the top of the bottom plate (110), and the top plate (130) is mounted on the top of the top support (140);

the feeding mechanism (20), the feeding mechanism (20) includes a feeding pump (210), a circulating pump (220), a first pressure gauge (230), a second pressure gauge (240), a first connecting pipe (250), a feeding pipe (260) and a concentrated liquid outlet pipe (270), the feeding pump (210) and the circulating pump (220) are respectively installed at the top of the bottom plate (110), one end of the first connecting pipe (250) is communicated with an output port of the feeding pump (210), the other end of the first connecting pipe (250) is communicated with an input port of the circulating pump (220), the first pressure gauge (230) is installed outside the first connecting pipe (250), a first valve (251) is arranged outside the first connecting pipe (250), and the bottom end of the circulating pump (260) is communicated with an output port of the feeding pipe (220);

the silicon carbide filter (30), the silicon carbide filter (30) is installed at the bottom of the top plate (130), the top end of the feeding pipe (260) is communicated with a liquid inlet of the silicon carbide filter (30), one end of the concentrated liquid outlet pipe (270) is communicated with a concentrated liquid outlet of the silicon carbide filter (30), the second pressure gauge (240) is installed outside the concentrated liquid outlet pipe (270), and a second valve (271) is installed outside the concentrated liquid outlet pipe (270);

clear liquid collecting mechanism (40), clear liquid collecting mechanism (40) are including collection tank (410), second connecting pipe (420) and clear liquid drain pipe (430), collection tank (410) install in bottom plate (110) top, second connecting pipe (420) one end communicate in silicon carbide membrane filter (30) clear liquid export, second connecting pipe (420) other end communicate in collection tank (410), just second connecting pipe (420) outside is provided with sixth valve (421), clear liquid drain pipe (430) one end communicate in collection tank (410), just clear liquid drain pipe (430) externally mounted has fourth valve (431).

2. The wet-process phosphoric acid purification treatment device according to claim 1, wherein an air compressor (440) is arranged on one side of the collection tank (410), an output port of the air compressor (440) is communicated with a third connecting pipe (450), the top end of the third connecting pipe (450) is communicated with the collection tank (410), and a fifth valve (451) is installed outside the third connecting pipe (450).

3. The purification treatment device for wet-process phosphoric acid according to claim 1, wherein a return pipe (280) is communicated between the first connecting pipe (250) and the concentrated solution outlet pipe (270), and a third valve (281) is installed outside the return pipe (280).

4. The wet-process phosphoric acid purification treatment device according to claim 1, wherein the silicon carbide membrane filter (30) comprises an outer cylinder shell (310), a top cover shell (320), a silicon carbide membrane roll (330) and a water collection pipe (340), the water collection pipe (340) is disposed inside the silicon carbide membrane roll (330), the silicon carbide membrane roll (330) is mounted inside the outer cylinder shell (310), the top cover shell (320) is detachably mounted on the top of the outer cylinder shell (310), the top of the top cover shell (320) is provided with a liquid inlet joint (321), the liquid inlet joint (321) is communicated with the top end of the feed pipe (260), the bottom end of the water collection pipe (340) extends to the lower part of the outer cylinder shell (310), one end of the second connection pipe (420) is communicated with the bottom end of the water collection pipe (340), one side of the outer cylinder shell (310) is provided with a liquid outlet joint (311), the liquid outlet joint (311) is communicated with one end of the concentrated liquid outlet pipe (270).

5. The purification treatment device for wet-process phosphoric acid according to claim 4, wherein the inner wall of the top cover casing (320) is provided with a groove, and a sealing member (370) is arranged in the groove.

6. The wet-process phosphoric acid purification treatment device according to claim 5, wherein the sealing element (370) comprises a first sealing ring (371) and a second sealing ring (372), the first sealing ring (371) and the second sealing ring (372) are both disposed inside the groove, and the first sealing ring (371) and the second sealing ring (372) are both sleeved outside the outer cylinder shell (310).

7. The wet-process phosphoric acid purification treatment device according to claim 6, wherein a plurality of first springs (373) are arranged between the first sealing ring (371) and the second sealing ring (372), and the plurality of first springs (373) are arranged in a central symmetry manner inside the groove.

8. The wet-process phosphoric acid purification treatment device according to claim 7, wherein a vertical limiting rod (374) is arranged inside the groove, and the limiting rod (374) movably penetrates through the first spring (373), the first sealing ring (371) and the second sealing ring (372) respectively.

9. The wet-process phosphoric acid purification treatment device according to claim 4, wherein a first sealing ring (350) is arranged between the outer cylinder shell (310) and the silicon carbide film coil (330), and a second sealing ring is arranged between the outer cylinder shell (310) and the water collecting pipe (340).

10. A purification treatment apparatus for wet process phosphoric acid according to claim 4, wherein the top wall of the interior of said top casing (320) is provided with a sealing gasket (360).

Technical Field

The application relates to the technical field of phosphoric acid production equipment, in particular to a wet-process phosphoric acid purification treatment device.

Background

The wet-process phosphoric acid refining production of industrial grade and food grade phosphoric acid is favored at home and abroad due to the advantages of low pollution, low energy consumption, low cost, capability of utilizing middle and low grade phosphorite and the like.

Solid impurities, calcium sulfate, barium sulfate and the like in the wet-process phosphoric acid production process need to be treated, the traditional dosing coagulation precipitation is difficult to remove completely, and particularly, the barium sulfate precipitation generated when the barium salt is used for removing sulfate radicals is too fine, so that the traditional process is difficult to remove. Therefore, the wet-process phosphoric acid purification treatment device is provided to solve the existing problems.

Disclosure of Invention

The present application is directed to solving at least one of the problems in the prior art. For this reason, this application provides a wet process phosphoric acid purification processing apparatus to solve and need handle solid impurity, calcium sulfate, barium sulfate etc. wherein in the wet process phosphoric acid production process, the tradition adds medicine coagulating sedimentation and is difficult to get rid of totally, and the barium sulfate that produces when especially utilizing barium salt to get rid of the sulfate radical deposits too finely, the problem that traditional handicraft was difficult to get rid of.

According to this application embodiment's phosphoric acid purification processing apparatus by wet process, includes: the device comprises a support supporting mechanism, a feeding mechanism, a silicon carbide film filter and a clear liquid collecting mechanism.

The support supporting mechanism comprises a bottom plate, a bottom support, a top plate and a top support, the bottom plate is arranged at the top of the bottom support, the top support is fixedly arranged at the top of the bottom plate, the top plate is arranged at the top of the top support, the feeding mechanism comprises a feeding pump, a circulating pump, a first pressure gauge, a second pressure gauge, a first connecting pipe, a feeding pipe and a concentrated liquid outlet pipe, the feeding pump and the circulating pump are respectively arranged at the top of the bottom plate, one end of the first connecting pipe is communicated with the output port of the feeding pump, the other end of the first connecting pipe is communicated with the input port of the circulating pump, the first pressure gauge is arranged outside the first connecting pipe, a first valve is arranged outside the first connecting pipe, the bottom end of the first connecting pipe is communicated with the output port of the circulating pump, and the silicon carbide filter is arranged at the bottom of the top plate, the inlet pipe top feed through in silicon carbide filter inlet, concentrate drain pipe one end feed through in silicon carbide filter concentrate liquid outlet, the second manometer is installed in the concentrate drain pipe outside, just concentrate drain pipe externally mounted has the second valve, the clear liquid is collected the mechanism and is included holding vessel, second connecting pipe and clear liquid drain pipe, the holding vessel install in the bottom plate top, second connecting pipe one end feed through in silicon carbide filter clear liquid export, the second connecting pipe other end feed through in the holding vessel, just second connecting pipe outside is provided with the sixth valve, clear liquid drain pipe one end feed through in the holding vessel, just clear liquid drain pipe externally mounted has the fourth valve.

In some embodiments of this application, collecting vessel one side is provided with the air compressor machine, air compressor machine output port intercommunication has the third connecting pipe, third connecting pipe top communicate in the collecting vessel, third connecting pipe externally mounted has the fifth valve.

In some embodiments of the present application, a return pipe is communicated between the first connecting pipe and the concentrated solution outlet pipe, and a third valve is installed outside the return pipe.

In some embodiments of this application, silicon carbide filter includes outer shell, top housing, silicon carbide film book piece and collector pipe, the collector pipe set up in inside the silicon carbide film book piece, silicon carbide film book piece install in inside the outer shell, top housing demountable installation in outer shell top, top housing top is provided with liquid inlet joint, liquid inlet joint communicate in the inlet pipe top, the collector pipe bottom extends to outer shell below, just second connecting pipe one end communicate in the collector pipe bottom end, outer shell one side is provided with out liquid joint, go out liquid joint communicate in concentrate drain pipe one end.

In some embodiments of the present application, the top casing inner wall is provided with a groove, inside which a seal is provided.

In some embodiments of the present application, the sealing member includes a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are both disposed inside the groove, and the first sealing ring and the second sealing ring are both sleeved outside the outer cylinder shell.

In some embodiments of the present application, a plurality of first springs are disposed between the first sealing ring and the second sealing ring, and a plurality of the first springs are distributed in the groove in a central symmetry manner.

In some embodiments of the present application, a vertical limiting rod is disposed inside the groove, and the limiting rod is movably penetrated through the first spring, the first sealing ring and the second sealing ring respectively.

In some embodiments of the present application, a first sealing ring is disposed between the outer cylindrical shell and the silicon carbide film roll, and a second sealing ring is disposed between the outer cylindrical shell and the water collecting pipe.

In some embodiments of the present application, the top enclosure interior top wall is provided with a sealing gasket.

The silicon carbide film roll in the above silicon carbide film filter is mounted inside the outer cylindrical shell, and the silicon carbide film roll inside the outer cylindrical shell is inconvenient to take out.

The wet-process phosphoric acid purification treatment device also comprises a filter auxiliary mounting mechanism, wherein the filter auxiliary mounting mechanism comprises a first fixing plate, a hinged seat part, a first elastic support part, a second fixing plate, a second elastic support part, a pushing component and a top limiting component, the first fixing plate is fixedly sleeved outside the outer cylinder shell, the hinged seat part is mounted at the bottom of the first fixing plate, the bottom of the first elastic support part is fixedly arranged at the top of the bottom plate, the top end of the first elastic support part is connected to the bottom of the hinged seat part, the second fixing plate is arranged above the first fixing plate, the second fixing plate is fixedly sleeved outside the outer cylinder shell, the top end of the second elastic support part is connected to the bottom of the second fixing plate, the top limiting component is mounted above the top plate, and the bottom of the top limiting component is connected to the top of the top cover shell, the pushing assembly is mounted at the top of the bottom plate and pushes the second fixing plate to move in the vertical direction.

In some embodiments of this application, the promotion subassembly includes cylinder, first backup pad, second backup pad and support column, first backup pad with the second backup pad set up respectively in second fixed plate below and top, the support column both ends connect respectively in first backup pad with the second backup pad, first backup pad with the notch has respectively been seted up to second backup pad one side is equallyd divide, just first backup pad with the second backup pad is equallyd divide respectively the movable sleeve to be located the urceolus shell is outside, the cylinder install in the bottom plate top, just cylinder output shaft fixed connection in first backup pad bottom.

In some embodiments of the present application, a third elastic supporting member is installed on the top of the bottom plate, and a supporting block is disposed above the third elastic supporting member, and the top end of the supporting block is fixedly connected to the bottom of the first fixing plate.

In some embodiments of the present application, the hinge seat member includes a supporting seat and a connecting block, the bottom of the supporting seat is connected to the top of the first elastic support member, the top of the connecting block is fixedly connected to the bottom of the first fixing plate, and the supporting seat is hinged to the connecting block.

No matter whether the outer cylinder shell in the wet-process phosphoric acid purification treatment device is disassembled or hermetically installed with the top cover shell, the mode of movably adjusting the outer cylinder shell is mainly adopted, but the top cover shell cannot be adjusted.

In some embodiments of the application, the spacing subassembly in top includes top cap, threaded rod, adjust knob, second spring and handle, the top cap set up in the top cap top, threaded rod top fixed connection in the top cap bottom, threaded rod bottom activity run through in the roof, just the threaded rod bottom connect in top cap shell top, the second spring set up in the roof below, just the second spring housing is located the threaded rod is outside, adjust knob set up in the top cap with between the roof, just adjust knob spiro union cover is located the threaded rod is outside, the handle install in the top cap top.

The beneficial effect of this application is: 1. the separation precision is high, can remove whole suspended solids in phosphoric acid, and is not influenced by the size of impurity particles. 2. The device is full-automatic, and the operation process need not the manual work, and area is little, and the phosphoric acid recovery rate is high, reduces edulcoration process manufacturing cost. 3. The silicon carbide membrane filter has the structural advantages that raw material liquid flows at high speed in the membrane tube, the flow direction is tangential to the membrane surface, clarified penetrating liquid containing small molecular components penetrates through the membrane outwards along the direction vertical to the clarified penetrating liquid under the driving of pressure, turbid concentrated liquid containing large molecular components is intercepted by the membrane, temporary covering objects on the membrane surface can be taken away by liquid flowing in continuously, and therefore the purposes of separation, concentration and purification of the liquid are achieved.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a wet-process phosphoric acid purification treatment device according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a feed mechanism, a silicon carbide membrane filter, and a filter-assisted mounting mechanism according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a clear liquid collection mechanism according to an embodiment of the present application;

FIG. 4 is a schematic front view of a silicon carbide membrane filter according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 4 according to an embodiment of the present application;

FIG. 6 is an enlarged schematic view of a portion B of FIG. 5 according to an embodiment of the present application;

FIG. 7 is a schematic structural view of a filter auxiliary mounting mechanism according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a top stop assembly according to an embodiment of the present application.

Icon:

10-a support mechanism; 110-a base plate; 120-a bottom bracket; 130-a top plate; 140-a top support; 20-a feeding mechanism; 210-a feed pump; 220-a circulating pump; 230-a first pressure gauge; 240-a second pressure gauge; 250-a first connection tube; 251-a first valve; 260-a feed pipe; 270-a concentrated solution outlet pipe; 271-a second valve; 280-a return pipe; 281-a third valve; 30-a silicon carbide membrane filter; 310-an outer cylinder shell; 311-liquid outlet joint; 320-a top enclosure; 321-a liquid inlet joint; 330-silicon carbide film coil; 340-a water collecting pipe; 350-a first sealing ring; 360-a sealing gasket; 370-a seal; 371 — first sealing ring; 372-a second seal ring; 373-a first spring; 374-stop lever; 40-a clear liquid collection mechanism; 410-a collection tank; 420-a second connecting tube; 421-sixth valve; 430-clear liquid outlet pipe; 431-a fourth valve; 440-an air compressor; 450-a third connecting tube; 451-fifth valve; 50-filter auxiliary mounting mechanism; 510-a first fixation plate; 520-a hinged seating member; 521-a support seat; 522-connecting block; 530-a first resilient support; 540-a second fixing plate; 550-a second resilient support; 560-a pushing assembly; 561-a cylinder; 562-a first support plate; 563-a second support plate; 564-a support column; 570-a top stop assembly; 571-top cover; 572-threaded rod; 573-adjusting knob; 574-a second spring; 575-a handle; 580-a support block; 590-third resilient support.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A wet process phosphoric acid purification treatment apparatus according to an embodiment of the present application is described below with reference to the accompanying drawings.

Referring to fig. 1 to 8, an apparatus for purifying wet process phosphoric acid according to an embodiment of the present application includes: the device comprises a bracket supporting mechanism 10, a feeding mechanism 20, a silicon carbide film filter 30 and a clear liquid collecting mechanism 40.

Wherein, support supporting mechanism 10 is used for supporting feed mechanism 20, carborundum membrane filter 30 and clear liquid collection mechanism 40 for the whole concentrated installation setting of device is convenient for the device to carry out bulk movement and transportation. The silicon carbide film filter 30 has a good treatment effect on solid impurities such as calcium sulfate, barium sulfate and the like in phosphoric acid, and can greatly save the cost.

Referring to fig. 1, the rack supporting mechanism 10 includes a bottom plate 110, a bottom rack 120, a top plate 130 and a top rack 140. The bottom plate 110 is arranged on the top of the bottom bracket 120, and the bottom plate 110 and the bottom bracket 120 are fixed by welding; the top bracket 140 is fixedly arranged on the top of the bottom plate 110, and the top plate 130 is arranged on the top of the top bracket 140; the top plate 130 and the top bracket 140 are fixed by welding. The bottom plate 110 is used for supporting the feeding mechanism 20 and the clear liquid collecting mechanism 40, and the top plate 130 is used for mounting the silicon carbide membrane filter 30.

Referring to fig. 2, the feeding mechanism 20 includes a feeding pump 210, a circulation pump 220, a first pressure gauge 230, a second pressure gauge 240, a first connection pipe 250, a feeding pipe 260, and a concentrated liquid outlet pipe 270. The feeding pump 210 and the circulating pump 220 are respectively installed on the top of the bottom plate 110, one end of the first connection pipe 250 is communicated with an output port of the feeding pump 210, the other end of the first connection pipe 250 is communicated with an input port of the circulating pump 220, the first pressure gauge 230 is installed outside the first connection pipe 250, a first valve 251 is arranged outside the first connection pipe 250, and the bottom end of the feeding pipe 260 is communicated with an output port of the circulating pump 220. Silicon carbide filter 30 is installed in roof 130 bottom, and inlet pipe 260 top communicates in silicon carbide filter 30 inlet, and concentrate drain pipe 270 one end communicates in silicon carbide filter 30 concentrate liquid outlet, and second manometer 240 is installed in the concentrate drain pipe 270 outside, and concentrate drain pipe 270 externally mounted has second valve 271.

In some embodiments of the present application, referring to fig. 2, a return pipe 280 is connected between the first connection pipe 250 and the concentrate outlet pipe 270, and a third valve 281 is installed outside the return pipe 280. The second valve 271 is closed, and the third valve 281 is opened, so that the concentrated solution in the silicon carbide membrane filter 30 is refluxed, and the concentrated solution is supplied to the interior of the silicon carbide membrane filter 30 through the circulating pump 220, and the clear solution is repeatedly filtered, thereby increasing the recovery rate of the phosphoric acid filtrate.

In some embodiments of the present application, referring to fig. 4 and 5, the silicon carbide membrane filter 30 includes an outer shell 310, a top housing 320, a silicon carbide membrane roll 330, and a water collection tube 340. The water collecting pipe 340 is arranged inside the silicon carbide film rolling part 330, the silicon carbide film rolling part 330 is arranged inside the outer cylinder shell 310, the top cover shell 320 is detachably arranged at the top of the outer cylinder shell 310, the top of the top cover shell 320 is provided with a liquid inlet joint 321, the liquid inlet joint 321 is communicated with the top end of the feeding pipe 260, the bottom end of the water collecting pipe 340 extends to the lower part of the outer cylinder shell 310, one end of the second connecting pipe 420 is communicated with the bottom end of the water collecting pipe 340, one side of the outer cylinder shell 310 is provided with a liquid outlet joint 311, and the liquid outlet joint 311 is communicated with one end of the concentrated liquid outlet pipe 270. The silicon carbide film roll 330 in the silicon carbide film filter 30 is used for filtering the phosphoric acid solution, the clear liquid is finally discharged from the bottom end of the water collecting pipe 340, and the concentrated liquid is discharged from the liquid outlet connector 311.

In some embodiments of the present application, referring to fig. 5 and 6, the top casing 320 has a groove formed in an inner wall thereof, and a sealing member 370 is disposed in the groove. The sealing member 370 includes a first sealing ring 371 and a second sealing ring 372, the first sealing ring 371 and the second sealing ring 372 are both disposed inside the groove, and the first sealing ring 371 and the second sealing ring 372 are both sleeved outside the outer cylinder housing 310. The first and second sealing rings 371 and 372 in the seal 370 are used to seal the gap between the outer cartridge housing 310 and the top casing 320. A plurality of first springs 373 are arranged between the first seal ring 371 and the second seal ring 372, and the plurality of first springs 373 are distributed in the groove in a central symmetry manner; the first spring 373 serves to elastically support the first and second seal rings 371 and 372. A vertical limiting rod 374 is arranged in the groove, and the limiting rod 374 movably penetrates through the first spring 373, the first sealing ring 371 and the second sealing ring 372 respectively; the limiting rod 374 is used for limiting the first spring 373.

Further, referring to fig. 5 and 6, a first sealing ring 350 is disposed between the outer cylindrical case 310 and the silicon carbide film roll 330, and a second sealing ring is disposed between the outer cylindrical case 310 and the water collecting pipe 340. The top wall inside the top casing 320 is provided with a sealing gasket 360. The first seal 350 seals the gap between the outer cylinder 310 and the sic film roll 330, and the seal 360 seals the top outer edge of the top housing 320.

Referring to fig. 3, the clear liquid collecting mechanism 40 includes a collecting tank 410, a second connecting pipe 420 and a clear liquid outlet pipe 430, the collecting tank 410 is installed above the bottom plate 110, one end of the second connecting pipe 420 is connected to the clear liquid outlet of the silicon carbide filter 30, the other end of the second connecting pipe 420 is connected to the collecting tank 410, a sixth valve 421 is installed outside the second connecting pipe 420, one end of the clear liquid outlet pipe 430 is connected to the collecting tank 410, and a fourth valve 431 is installed outside the clear liquid outlet pipe 430.

When the equipment runs, the first valve 251, the second valve 271 and the sixth valve 421 are opened, the material to be processed enters the acid-resistant circulating pump 220 after being pressurized by the feeding pump 210, the circulating pump 220 enables the material liquid to flow in a membrane channel in the silicon carbide membrane filter 30 at a high speed, the flow rate is 2-5m/s, the membrane feeding pressure of the system is 0.5-4bar, and the reading of the first pressure gauge 230 is 0.5-4 bar. After being filtered by the silicon carbide filter 30, impurities in the feed liquid are removed, the clear liquid enters the collection tank 410 through the second connecting pipe 420 for collection, the fourth valve 431 is opened, and the clear liquid in the collection tank 410 is discharged from the clear liquid outlet pipe 430; the concentrated solution flows out through the concentrated solution outlet pipe 270, and the high-efficiency separation of impurities in the phosphoric acid is realized.

It should be noted that, the specific model specifications of the feeding pump 210 and the circulating pump 220 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted. The power supply of the feed pump 210 and the circulation pump 220 and the principle thereof will be clear to a person skilled in the art and will not be described in detail here.

In some embodiments of the present application, referring to fig. 4, an air compressor 440 is disposed on one side of the collecting tank 410, an output port of the air compressor 440 is communicated with a third connecting pipe 450, a top end of the third connecting pipe 450 is communicated with the collecting tank 410, and a fifth valve 451 is installed outside the third connecting pipe 450. And opening the second valve 271, the sixth valve 421 and the fifth valve 451, pressing the clear liquid in the collection tank 410 into the silicon carbide filter 30 by the air compressor 440, back-flushing the suspended matters and macromolecular substances in the silicon carbide channel out of the concentrated liquid outlet pipe 270, and keeping the inside of the silicon carbide filter 30 clean.

It should be noted that the air compressor 440 provides 4-8bar pressure for the equipment backwash. It should be noted that the specific model specification of the air compressor 440 needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted. The power supply of the air compressor 440 and its principle will be clear to those skilled in the art and will not be described in detail herein.

The material of the pipes is acid corrosion resistant material such as polytetrafluoroethylene and polypropylene, and the feeding pipe 260, the concentrated solution outlet pipe 270, the return pipe 280 and the second connecting pipe 420 are flexible hoses.

The silicon carbide film roll 330 of the silicon carbide film filter 30 is mounted inside the outer cylindrical case 310, and it is inconvenient to take out the silicon carbide film roll 330 inside the outer cylindrical case 310.

Referring to fig. 7, the wet-process phosphoric acid purification apparatus further includes a filter auxiliary mounting mechanism 50, wherein the filter auxiliary mounting mechanism 50 includes a first fixing plate 510, a hinge seat member 520, a first elastic supporting member 530, a second fixing plate 540, a second elastic supporting member 550, a pushing member 560 and a top limiting member 570. The first fixing plate 510 is fixedly sleeved outside the outer cylinder shell 310, and the first fixing plate 510 and the outer cylinder shell 310 are fixed by welding; the hinge base 520 is mounted at the bottom of the first fixing plate 510, the bottom of the first elastic supporting member 530 is fixedly disposed at the top of the base plate 110, and the top of the first elastic supporting member 530 is connected to the bottom of the hinge base 520. The second fixing plate 540 is disposed above the first fixing plate 510, and the second fixing plate 540 is fixedly sleeved outside the outer cylinder shell 310; the second fixing plate 540 and the outer cylindrical case 310 are fixed by welding. The top end of the second elastic supporting member 550 is connected to the bottom of the second fixing plate 540, the top limiting member 570 is installed above the top plate 130, the bottom end of the top limiting member 570 is connected to the top of the top housing 320, the pushing member 560 is installed on the top of the bottom plate 110, and the pushing member 560 pushes the second fixing plate 540 to move in the vertical direction. The pushing assembly 560 comprises a cylinder 561, a first supporting plate 562, a second supporting plate 563 and a supporting column 564, wherein the first supporting plate 562 and the second supporting plate 563 are respectively arranged below and above the second fixing plate 540, two ends of the supporting column 564 are respectively connected to the first supporting plate 562 and the second supporting plate 563, and the supporting column 564 is fixed with the first supporting plate 562 and the second supporting plate 563 by bolts; the notches are respectively formed in one sides of the first supporting plate 562 and the second supporting plate 563, the first supporting plate 562 and the second supporting plate 563 are respectively movably sleeved outside the outer cylinder shell 310, the cylinder 561 is mounted at the top of the bottom plate 110, and an output shaft end of the cylinder 561 is fixedly connected to the bottom of the first supporting plate 562.

When the silicon carbide film roll 330 in the outer cylinder 310 needs to be replaced, the output rod end of the air cylinder 561 in the pushing assembly 560 drives the first supporting plate 562 to move downward, that is, the second fixing plate 540 is driven to move downward by the matching of the supporting column 564 and the second supporting plate 563, that is, the outer cylinder 310 is finally driven to move downward, so that the top end of the outer cylinder 310 is separated from the top cover 320, and the hand pushes the outer cylinder 310 to incline a certain angle inside the groove until the silicon carbide film roll 330 can be replaced from the upper end of the outer cylinder 310. After the silicon carbide film roll 330 is replaced, the inclined outer cylindrical shell 310 is pushed to a vertical position; the output rod end of the air cylinder 561 in the pushing assembly 560 drives the first supporting plate 562 to move in the vertical direction; that is, the first supporting plate 562 pushes the second elastic supporting member 550 to drive the second fixing plate 540 to move upwards, i.e. the outer cylinder 310 moves upwards, until the outer cylinder 310 is clamped at the bottom of the top casing 320, and the outer cylinder 310 and the top casing 320 are mounted in a butt joint manner. Meanwhile, the second elastic supporting member 550 also provides an upward elastic force to the second fixing plate 540 and the outer cylindrical shell 310, so that the top end of the outer cylindrical shell 310 is tightly attached to the top casing 320, and the sealing performance between the top end of the outer cylindrical shell 310 and the top casing 320 is improved.

It should be noted that the specific model specification of the cylinder 561 needs to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted. The power supply of the cylinder 561 and its principle will be clear to the skilled person and will not be described in detail here.

In some embodiments of the present application, referring to fig. 7, a third elastic supporting element 590 is installed on the top of the bottom plate 110, a supporting block 580 is disposed above the third elastic supporting element 590, and the top end of the supporting block 580 is fixedly connected to the bottom of the first fixing plate 510. When the outer cylindrical housing 310 is in the vertical direction, the third elastic supporting piece 590 and the supporting block 580 serve to limitedly support the other side of the bottom of the outer cylindrical housing 310, and the outer cylindrical housing 310 can be stably supported by cooperation of the hinge seat piece 520 and the first elastic supporting piece 530.

The first elastic supporting member 530, the second elastic supporting member 550 and the third elastic supporting member 590 may respectively adopt gas springs.

Further, referring to fig. 7, the hinge seat member 520 includes a support seat 521 and a connection block 522. The bottom of the supporting seat 521 is connected to the top of the first elastic supporting member 530, and the supporting seat 521 and the first elastic supporting member 530 are fixed by welding; the top end of the connecting block 522 is fixedly connected to the bottom of the first fixing plate 510, and the connecting block 522 and the first fixing plate 510 are fixed by welding; the supporting seat 521 is hinged with the connecting block 522. The hinge seat 521 of the hinge seat 520 is hinged to the connecting block 522, so that the top outer cylindrical shell 310 can rotate around the hinge seat 520.

Whether the outer cylinder shell 310 and the top cover shell 320 in the wet-process phosphoric acid purification treatment device are disassembled or hermetically installed, the mode of movably adjusting the outer cylinder shell 310 is mainly adopted, but the top cover shell 320 cannot be adjusted.

In some embodiments of the present application, referring to fig. 8, the top stop assembly 570 includes a top cover 571, a threaded rod 572, an adjustment knob 573, a second spring 574, and a handle 575. The top cover 571 is arranged above the top plate 130, the top end of the threaded rod 572 is fixedly connected to the bottom of the top cover 571, and the threaded rod 572 and the top cover 571 are fixed by welding; the bottom end of the threaded rod 572 movably penetrates through the top plate 130, the bottom end of the threaded rod 572 is connected to the top of the top casing 320, and the threaded rod 572 and the top casing 320 are fixed through welding. The second spring 574 is arranged below the top plate 130, the second spring 574 is sleeved outside the threaded rod 572, the adjusting knob 573 is arranged between the top cover 571 and the top plate 130, and the adjusting knob 573 is screwed and sleeved outside the threaded rod 572; the handle 575 is arranged on the top of the top cover 571, and the handle 575 and the top cover 571 are fixed through bolts.

The top limiting assembly 570 can adjust the height of the top cover casing 320 in the vertical direction, so that the top cover casing 320 can be tightly attached to the top end of the outer cylinder casing 310, and the sealing effect is improved. When the outer cylinder shell 310 needs to be detached, the adjusting knob 573 outside the threaded rod 572 can be rotated, so that the adjusting knob 573 is close to one side of the top cover 571, the hand holds the handle 575 to pull the top cover 571 upwards, that is, the threaded rod 572 can drive the top cover 320 to move upwards to compress the second spring 574, so that the distance between the top cover 320 and the outer cylinder shell 310 is increased, and the outer cylinder shell 310 is separated from the top cover 320 to replace the silicon carbide film roll 330 inside. When the silicon carbide film roll 330 is replaced, after the top end of the outer cylinder 310 is inserted into the top cover 320, the adjusting knob 573 can be rotated to make the adjusting knob 573 away from the top cover 571, so that the second spring 574 is compressed by the top plate 130 and the top cover 320 to give downward elastic force to the top cover 320; the second elastic support 550 is matched to provide upward elastic force to the outer cylinder shell 310, so that the interface between the outer cylinder shell 310 and the top casing 320 can be tightly attached, and the sealing performance at the port is improved.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.