CN112237751A - MVR evaporation crystallization device with automatic crystal scale processing function - Google Patents
MVR evaporation crystallization device with automatic crystal scale processing function Download PDFInfo
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- CN112237751A CN112237751A CN201910637907.1A CN201910637907A CN112237751A CN 112237751 A CN112237751 A CN 112237751A CN 201910637907 A CN201910637907 A CN 201910637907A CN 112237751 A CN112237751 A CN 112237751A
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- 238000002425 crystallisation Methods 0.000 title claims abstract description 62
- 230000008025 crystallization Effects 0.000 title claims abstract description 62
- 239000013078 crystal Substances 0.000 title claims abstract description 36
- 238000001704 evaporation Methods 0.000 title claims description 6
- 230000008020 evaporation Effects 0.000 title claims description 6
- 238000003756 stirring Methods 0.000 claims abstract description 92
- 238000001816 cooling Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 239000012452 mother liquor Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0077—Screening for crystallisation conditions or for crystal forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention relates to the field of MVR evaporative crystallization equipment, in particular to an MVR evaporative crystallization device with an automatic crystal scale treatment function, which comprises a heating tank, a crystallization tank and a stirrer, wherein two water-cooling discs are arranged in the upper end of the crystallization tank, a drainage port is formed in one water-cooling disc, the water-cooling disc is positioned below the other water-cooling disc, a diversion cavity is formed between the two water-cooling discs, the output end of the heating tank is communicated with the diversion cavity through a first pipeline, the stirrer comprises a stirring motor, an air supporting piece, a telescopic part and a stirring main rod, the stirring main rod is movably arranged in the crystallization tank through the telescopic part, two ends of the stirring main rod respectively face the inner wall of the crystallization tank, a piston shaft is respectively arranged in the two ends of the stirring main rod, a treatment ball head is arranged outside the piston shaft, the air supporting piece and the stirring motor are both arranged above the crystallization tank, the stirring motor is in transmission connection with the telescopic component, and the invention can rapidly remove crystal scale on line, so that the whole machine does not need to be stopped for a long time.
Description
Technical Field
The invention relates to the field of MVR (mechanical vapor recompression) evaporative crystallization equipment, in particular to an MVR evaporative crystallization device with a crystal scale automatic processing function.
Background
The heater of the evaporative crystallization device has scaling problems of different degrees, and particularly, in the heaters of evaporative concentration and crystallization devices, the media of which are inorganic salts such as sodium chloride, sodium sulfate, sodium hydroxide, magnesium chloride, magnesium sulfate and the like, and sewage treatment, food, sugar manufacturing, paper making, seawater desalination, oil field wastewater, diaphragm caustic soda, ionic membrane caustic soda and the like, the scaling problems are very prominent because dissolved substances in feed liquid are separated out. The scaling is a common phenomenon in an evaporative crystallization device, the scaling of the evaporative crystallization device not only reduces the effective working volume of equipment and increases thermal resistance and flow resistance, but also reduces the heat transfer coefficient of a heating pipe, reduces the production capacity, and the severe scaling can also cause production pause, shorten the effective production time, reduce the service life of the equipment and even damage the equipment and increase the consumption of raw materials and energy.
After scaling, the existing treatment mode generally adopts a chemical cleaning method, and for some crystallization tanks with larger volume, the single chemical medium input amount is large in each cleaning process, the standing time is too long, and the processing production is delayed.
Disclosure of Invention
The invention aims to provide an MVR evaporation crystallization device with a function of automatically processing crystal scale aiming at the defects of the prior art.
In order to solve the above problems, the present invention provides the following technical solutions:
an MVR evaporation crystallization device with an automatic crystal scale treatment function comprises a heating tank, a centrifugal compressor, a crystallization tank and a stirrer, wherein the output end of the centrifugal compressor is communicated with the inside of the heating tank, two water-cooling discs are arranged in the upper end of the crystallization tank in an up-and-down symmetrical mode, a drainage port is formed in one water-cooling disc, the water-cooling disc is positioned below the other water-cooling disc, a diversion cavity is formed between the two water-cooling discs, the concentrated liquid output end of the heating tank is communicated with the diversion cavity through a first pipeline, the stirrer comprises a stirring motor, an air supporting part, a telescopic part and a stirring main rod, the stirring main rod is vertical and can be movably arranged in the crystallization tank through the telescopic part, the stirring main rod is of a hollow structure, two ends of the stirring main rod face the inner wall of the crystallization tank respectively, a piston shaft is arranged in each of the two ends of the stirring, the gas supporting piece and the stirring motor are arranged above the crystallizing tank, the gas supporting piece is communicated with the stirring main rod, the stirring motor is in transmission connection with the telescopic part, the separating tank is arranged at the lower end of the crystallizing tank, the guide cylinder is arranged in the separating tank, and the opening and closing device is arranged in the guide cylinder.
Furthermore, the telescopic component comprises a spline shaft, a receiving shaft and a pulley assembly, the upper end of the receiving shaft is positioned above the crystallizing tank, the lower end of the water-cooled shaft vertically penetrates into the flow guide cavity, the receiving shaft is in hinged fit with a water-cooled disc close to the top end of the crystallization tank, the receiving shaft is of a hollow structure, one end of the spline shaft is always positioned below the flow guide cavity, the other end of the stirring rod can be movably inserted into the containing shaft, the length of the containing shaft is greater than that of the spline shaft, the containing shaft and the water-cooling disc are coaxially arranged, the upper end of the containing shaft is sleeved with a chain wheel, a main shaft of the stirring motor is in transmission connection with the chain wheel through a transmission chain, the lower end of the spline shaft is provided with an extending shaft in interference fit with the spline shaft, the extending shaft is of a hollow structure, the stirring main rod and the extending shaft are integrally formed, and the longitudinal sections of the pulley assembly and the spline shaft are cross-shaped, and the output end of the pulley assembly is positioned in the containing shaft and is connected with the spline shaft.
Further, loose pulley assembly includes the rotating electrical machines, the rolling pulley, rubber rope pipe and air guide piece, set up the axial first gas pocket that runs through it along on the integral key shaft, air guide piece and the articulated cooperation of integral key shaft, the gas props the piece and includes the air pump, the one end winding of rubber rope pipe is on the rolling pulley, and the input of air pump is linked together with this one end of rubber rope pipe, the other end and the air guide piece fixed connection of rubber rope pipe, the rubber rope pipe is linked together in air guide piece and the first gas pocket.
Further, the number of the stirring main rods is two, the two stirring main rods are respectively close to two ends of the extension shaft, and the extension directions of the two stirring main rods are perpendicular to each other.
Further, fixed mounting has the reference column in the middle section of stirring mobile jib, two close one ends of piston shaft are respectively through a reset spring and reference column elastic connection, reset spring's shrink direction parallels with the axial of stirring mobile jib, every epaxial cover of piston is equipped with one respectively can with the inner wall clearance fit's of stirring mobile jib piston ring, constitute a first cavity between two piston rings, one side that two piston rings kept away from is equipped with a sealing ring respectively, sealing ring and piston shaft clearance fit, the inner wall fixed connection of sealing ring and stirring mobile jib, every processing bulb and all install a material pushing ring between the sealing ring that corresponds with it, material pushing ring and piston shaft fixed connection, it makes for the rubber material to handle the bulb, and its surface arrangement has handled the bump.
Further, the on-off device comprises a sealing circular plate and an on-off pipeline, the sealing circular plate is arranged at the bottom end of the crystallizing tank, the on-off pipeline is arranged below the sealing circular plate and is located at the eccentric position of the sealing circular plate, and an on-off valve is arranged on the on-off pipeline.
Further, install in the draft tube and fill up the bottom shaft, fill up the upper end of bottom shaft and be in the crystallizer all the time to its lower extreme runs through sealed plectane and extends to the lower extreme position in the draft tube, fill up the articulated cooperation of the upper end of bottom shaft and the bottom that extends the axle, fill up bottom shaft and draft tube coaxial line setting.
Furthermore, the water-cooling disc is of a hollow structure, a water inlet pipe and a water outlet pipe are symmetrically arranged on the periphery of the water-cooling disc, and a water-cooling pipe is wound outside the crystallizing tank.
Further, the first section intercommunication of knockout drum has mother liquor pipe, and the outside cover of draft tube is equipped with the filter.
Furthermore, the lower end of the separation tank is communicated with an elutriation column coaxial with the guide shell.
Has the advantages that: according to the MVR evaporation crystallization device with the function of automatically treating the crystal scale, liquid to be evaporated and crystallized enters the heating tank through the plate heat exchanger and is evaporated into concentrated liquid, and evaporated steam is pressurized by the centrifugal compressor and returns to the heating tank; the concentrated solution reaches the diversion cavity through the first pipeline, and at the moment, cold water is introduced into the water cooling disc to perform heat exchange and temperature reduction on the concentrated solution in the diversion cavity; the concentrated liquid in the diversion cavity can reach the lower half section of the crystallizing tank through the drainage port, the opening and closing device is closed at the moment, the liquid level of the concentrated liquid in the crystallizing tank is increased, the stirring motor drives the storage shaft at the same time, the spline shaft and the stirring main rod rotate, the concentrated liquid is uniformly stirred, and meanwhile, cold water is introduced into the water cooling pipe, so that the cooling effect of the water cooling pipe is improved due to the fact that the concentrated liquid is stirred; meanwhile, the pulley assembly works to enable the spline shaft to drive the stirring main rod to ascend or descend at a constant speed, and then the concentrated solution at each horizontal height is fully stirred; the stirred concentrated solution falls into the guide shell after the opening and closing device is opened, and is diverged to open at the bottom of the guide shell, the crystals fall into the elutriation column, and the elutriation column can recycle the crystals with the granularity smaller than the set specification into the crystallizer by utilizing the hydraulic classification function; the finished crystal is discharged from the lower part of the elutriation column; the filter plate can prevent crystals from flowing downwards but not upwards; the mother liquor pipe is used for discharging liquid in the separation tank; when the crystallization tank stops working, the air pump works, injects an air source, provides the air source into a first air hole in the spline shaft through the rubber rope pipe, reaches the extension shaft through the first air hole and then reaches the stirring main rod, and the purpose of air pressure movement of two piston shafts in the stirring main rod is achieved; at the moment, two piston shafts in a single stirring main rod move oppositely, so that the processing ball head is in contact with the inner wall of the crystallization tank, and then the processing ball head can perform friction processing on crystal scales on the inner wall of the crystallization tank by means of processing salient points on the outer surface in the subsequent rotation of the stirring main rod; the treatment ball head can treat the crystal scale on the inner wall of the crystallization tank by means of the treatment salient points on the outer surface; the stirring main rod is mainly used for removing crystal scale, the stirring work of the concentrated solution is short, and the concentrated solution is only prevented from splashing due to uneven local heating; the invention can rapidly remove crystal scale on line, so that the whole machine does not need to be stopped for a long time and the investment of chemical media is saved.
Drawings
FIG. 1 is a first schematic plan view of the present invention;
FIG. 2 is a second schematic plan view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a third schematic plan view of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at B;
FIG. 6 is a schematic illustration of a three-dimensional split structure according to the present invention;
FIG. 7 is an enlarged view at C of FIG. 6;
FIG. 8 is a partial perspective view of the first embodiment of the present invention;
FIG. 9 is an enlarged view of FIG. 8 at D;
FIG. 10 is a partial perspective view of the second embodiment of the present invention;
description of reference numerals: heating tank 1, centrifugal compressor 11.
And a crystallizing tank 2.
The water cooling plate 31, the water inlet pipe 32, the water outlet pipe 321, the drainage port 323, the diversion cavity 324 and the first pipeline 325.
A stirring motor 4.
An extension shaft 5.
The stirring main rod 6, a positioning column 611, a piston ring 612, a sealing ring 613, a pushing ring 614, a return spring 615, a piston shaft 616, a processing ball head 617 and a processing salient point 618.
The spline shaft 7, the first air hole 711, and the housing shaft 712.
A rotating motor 8, a winding pulley 811, a rubber rope pipe 812 and an air guide block 813.
A separation tank 9 and a guide cylinder 911.
A seal disk 10, an on-off pipe 1011, and an on-off valve 1012.
A backing shaft 11.
An elutriation column 12, a mother liquor pipe 12a, and a filter plate 12 b.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 1 to 10, an MVR evaporative crystallization apparatus with a function of automatically processing crystal scale includes a heating tank 1, a centrifugal compressor 11, a crystallization tank 2 and a stirrer, an output end of the centrifugal compressor 11 is communicated with an interior of the heating tank 1, two water-cooling discs 31 are disposed in an upper end of the crystallization tank 2, the two water-cooling discs 31 are disposed in an up-down symmetry manner, one of the water-cooling discs 31 is provided with a drainage port 323, the water-cooling disc 31 is disposed below the other water-cooling disc 31, a diversion cavity 324 is formed between the two water-cooling discs 31, a concentrated solution output end of the heating tank 1 is communicated with the diversion cavity 324 through a first pipeline 325, the stirrer includes a stirring motor 4, an air supporting member, a telescopic member and a stirring main rod 6, the stirring main rod 6 is vertical and movably disposed in the crystallization tank 2 through the telescopic member, the stirring main rod 6 is of a hollow structure, and two ends of, be equipped with a piston axle 616 in the both ends of mobile jib 6 respectively, the externally mounted of piston axle 616 has the processing bulb 617, and the top of crystallizer 2 is all located to gas support spare and agitator motor 4, and the gas support spare communicates in 6 with the mobile jib, and agitator motor 4 is connected with the flexible part transmission, and knockout drum 9 is installed to the lower extreme of crystallizer 2, installs draft tube 911 in the knockout drum 9, is equipped with the headstock gear in the draft tube 911.
The telescopic component comprises a spline shaft 7, a receiving shaft 712 and a pulley assembly, the upper end of the receiving shaft 712 is positioned above the crystallizer 2, the lower end of the receiving shaft is vertically penetrated into the flow guide cavity 324, the receiving shaft 712 is in hinged fit with a water-cooling disc 31 close to the top end of the crystallizer 2, the receiving shaft 712 is of a hollow structure, one end of the spline shaft 7 is always positioned below the flow guide cavity 324, the other end of the spline shaft 7 can be movably inserted into the receiving shaft 712, the length of the receiving shaft 712 is greater than that of the spline shaft 7, the receiving shaft 712 and the water-cooling disc 31 are coaxially arranged, a sprocket is sleeved at the upper end of the receiving shaft 712, a main shaft of the stirring motor 4 is in transmission connection with the sprocket through a transmission chain, the lower end of the spline shaft 7 is provided with an extension shaft 5 in interference fit with the extension shaft 7, the extension shaft 5 is of a hollow structure, the stirring main rod 6 and the extension shaft, and is connected with the spline shaft 7; the pulley assembly is used for driving the spline shaft 7 to vertically move, so that the stirring main rod 6 can move in the crystallization tank 2, and then the solution in the crystallization tank 2 is fully stirred and the inner wall of the crystallization tank 2 is fully removed of crystal scale; the stirring motor 4 drives the sprocket to rotate the receiving shaft 712 with the spline shaft 7, and then the spline shaft 7 with the extension shaft 5 is driven to rotate the stirring main rod 6 around the crystallization tank 2 in the circumferential direction.
The pulley component comprises a rotating motor 8, a winding pulley 811, a rubber rope tube 812 and an air guide block 813, a first air hole 711 penetrating through the spline shaft 7 along the axial direction of the spline shaft is formed in the spline shaft 7, the air guide block 813 is hinged and matched with the spline shaft 7, the air supporting piece comprises an air pump, one end of the rubber rope tube 812 is wound on the winding pulley 811, the input end of the air pump is communicated with one end of the rubber rope tube 812, the other end of the rubber rope tube 812 is fixedly connected with the air guide block 813, and the rubber rope tube 812 is communicated with the first air hole 711 through the air guide block 813; the air pump is communicated with the rubber rope tube 812, then injects air flow into the rubber rope tube 812, provides the air flow into the first air hole 711 in the spline shaft 7 through the air pump, reaches the extension shaft 5 through the first air hole 711, and then reaches the stirring main rod 6, so that the purpose of air pressure movement of the two piston shafts 616 in the stirring main rod 6 is achieved; and the rotating motor 8 can also apply work to the winding pulley 811 to drive the winding pulley to rotate, so that the purpose of winding and unwinding the rubber rope tube 812 is achieved, the purpose of ascending or descending the extension shaft 5 is achieved, and the purpose of quickly descaling the inner surface of the crystallization tank 2 is fully achieved due to the ascending or descending of the stirring main rod 6.
The number of the stirring main rods 6 is two, the two stirring main rods are respectively close to two ends of the extension shaft 5, and the extension directions of the two stirring main rods 6 are vertical to each other; stirring mobile jib 6 quantity is two, can be so that the stirring effect is good, also makes the scale removal effect to crystallizer 2 inner walls increase simultaneously.
A positioning column 611 is fixedly installed in the middle section of the stirring main rod 6, one ends, close to the two piston shafts 616, of the two piston shafts 616 are respectively and elastically connected with the positioning column 611 through a return spring 615, the contraction direction of the return spring 615 is parallel to the axial direction of the stirring main rod 6, each piston shaft 616 is respectively sleeved with a piston ring 612 capable of being movably matched with the inner wall of the stirring main rod 6, a first chamber is formed between the two piston rings 612, one side, far away from the two piston rings 612, of each piston ring is respectively provided with a sealing ring 613, the sealing rings 613 are movably matched with the piston shafts 616, the sealing rings 613 are fixedly connected with the inner wall of the stirring main rod 6, a material pushing ring 614 is installed between each processing ball 617 and the corresponding sealing ring 613, the material pushing ring 614 is fixedly connected with the piston shafts 616, the processing balls 617 are; after the stirring main rod 6 is acted by air pressure, two piston shafts 616 inside the stirring main rod 6 are acted by air pressure to move oppositely, so that a processing ball head 617 at the outer end of each piston shaft 616 is in contact with the inner wall of the crystallization tank 2, and then in the subsequent rotation of the stirring main rod 6, the processing ball head 617 can process crystal scales on the inner wall of the crystallization tank 2 by means of a processing salient point 618 on the outer surface; the piston ring 612 is movably engaged with the inner wall of the first chamber; the seal ring 613 is stationary and prevents the concentrate from entering the first chamber; the pushing ring 614 is used for pushing out the concentrated solution in the stirring main rod 6 far away from the sealing ring 613; the diameters of the material pushing ring 614 and the processing ball head 617 are similar to the inner diameter of the stirring main rod 6, and the processing ball head 617 is clamped at an opening at the end part of the stirring main rod 6 in a normal state; therefore, when the stirring main rod 6 is in a stirring working state, liquid cannot enter the stirring main rod 6.
The on-off device comprises a sealing circular plate 10 and an on-off pipeline 1011, the sealing circular plate 10 is arranged at the bottom end of the crystallization tank 2, the on-off pipeline 1011 is arranged below the sealing circular plate 10 and is positioned at the eccentric position of the sealing circular plate 10, and an on-off valve 1012 is arranged on the on-off pipeline 1011; the on-off valve 1012 is used for releasing the concentrated solution in the crystallizing tank 2 into the separating tank 9 after the concentrated solution is stirred.
A bottom cushion shaft 11 is installed in the guide cylinder 911, the upper end of the bottom cushion shaft 11 is always positioned in the crystallization tank 2, the lower end of the bottom cushion shaft penetrates through the sealing circular plate 10 and extends to the lower end position in the guide cylinder 911, the upper end of the bottom cushion shaft 11 is in hinged fit with the bottom end of the extension shaft 5, and the bottom cushion shaft 11 and the guide cylinder 911 are coaxially arranged; the bottom shaft 11 acts on the extension shaft 5 to enable the extension shaft to carry the stirring main rod 6, so that the stability of the extension shaft is improved and the axial direction of the extension shaft is kept stable; in addition, when the extension shaft 5 and the spline shaft 7 are lifted, the backing shaft 11 is lifted along with the lifting, and in the process, the backing shaft 11 is lifted by the action of the sealing circular plate 10.
The water cooling disc 31 is of a hollow structure, the periphery of the water cooling disc is symmetrically provided with a water inlet pipe 32 and a water outlet pipe 321, and a water cooling pipe is wound outside the crystallization tank 2; the water cooling disc 31 is filled with water to initially cool the concentrated solution between the water cooling disc and the water cooling disc; the water-cooling pipe is matched with the stirring main rod 6 to stir the concentrated solution in the crystallization tank 2, so that the stirred concentrated solution realizes the purpose of further cooling by the action of the water-cooling pipe; meanwhile, the water-cooling disc 31 and the medium cooled in the water-cooling pipe can be used for primary heating before the liquid enters the heating tank 1.
The upper half section of the separation tank 9 is communicated with a mother liquor pipe 12a, and a filter plate 12b is sleeved outside the guide cylinder 911; the mother liquor pipe 12a is used for discharging the liquid in the separation tank 9, and the filter plate 12b can prevent the crystallization from flowing downwards but not upwards.
The lower end of the separation tank 9 is communicated with an elutriation column 12 coaxial with the guide shell 911; the elutriation column 12 can recycle the crystals with the granularity smaller than the set specification into the crystallizer by utilizing the hydraulic classification function; the finished crystals are discharged from the lower portion of the elutriation column 12.
The working principle is as follows: liquid to be evaporated and crystallized enters the heating tank 1 through the plate heat exchanger and is evaporated into concentrated liquid, and evaporated steam is pressurized by the centrifugal compressor 11 and returns to the heating tank 1; the concentrated solution reaches the flow guide cavity 324 through the first pipeline 325, at the moment, cold water is introduced into the water cooling disc 31, and the concentrated solution in the flow guide cavity 324 is subjected to heat exchange and temperature reduction; the concentrated solution in the diversion cavity 324 can reach the lower half section of the crystallization tank 2 through the drainage port 323, the opening and closing device is closed at the moment, the level of the concentrated solution in the crystallization tank 2 is increased, meanwhile, the stirring motor 4 drives the storage shaft 712, so that the spline shaft 7 and the stirring main rod 6 rotate, the concentrated solution is uniformly stirred, and meanwhile, cold water is introduced into the water cooling pipe, so that the cooling effect of the concentrated solution is improved as the concentrated solution is stirred; meanwhile, the pulley component works to enable the spline shaft 7 to drive the stirring main rod 6 to ascend or descend at a constant speed, and then the concentrated solution at each horizontal height is fully stirred; the stirred concentrated solution falls into the guide shell 911 through opening the opening and closing device, and is diverged at the bottom of the guide shell 911, the crystals fall into the elutriation column 12, and the elutriation column 12 can recycle the crystals with the granularity smaller than the set specification into the crystallizer by utilizing the hydraulic classification function; the finished crystals are discharged from the lower part of the elutriation column 12; the filter plate 12b can prevent the crystallization from flowing downwards but not upwards; a mother liquor pipe 12a for discharging the liquid in the separation tank 9; when the crystallization tank 2 stops working, the air pump works, the air source is injected, the air source is supplied into the first air hole 711 in the spline shaft 7 through the rubber rope pipe 812, and reaches the extension shaft 5 through the first air hole 711 and then reaches the stirring main rod 6, so that the purpose of air pressure movement of the two piston shafts 616 in the stirring main rod 6 is achieved; at this time, the two piston shafts 616 in the single main stirring rod 6 move in opposite directions, so that the processing ball 617 contacts the inner wall of the crystallization tank 2, and then in the subsequent rotation of the main stirring rod 6, the processing ball 617 can perform friction processing on the crystal scale on the inner wall of the crystallization tank 2 by means of the processing salient points 618 on the outer surface; the treatment bulb 617 can treat the crystal scale on the inner wall of the crystallization tank 2 by means of the treatment salient points 618 on the outer surface.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (10)
1. An MVR evaporation crystallization device with automatic crystal scale processing function is characterized in that: comprises a heating tank (1), a centrifugal compressor (11), a crystallizing tank (2) and a stirrer, wherein the output end of the centrifugal compressor (11) is communicated with the inside of the heating tank (1), two water-cooling discs (31) which are symmetrically arranged up and down are arranged at the upper end of the crystallizing tank (2), a drainage port (323) is arranged on one water-cooling disc (31), the water-cooling disc (31) is positioned below the other water-cooling disc (31), a diversion cavity (324) is formed between the two water-cooling discs (31), the concentrated solution output end of the heating tank (1) is communicated with the diversion cavity (324) through a first pipeline (325), the stirrer comprises a stirring motor (4), an air supporting piece, a telescopic part and a stirring main rod (6), the stirring main rod (6) is vertical and can be movably arranged in the crystallizing tank (2) through the telescopic part, the stirring main rod (6) is of a hollow structure, and its both ends are respectively towards the inner wall of crystallizer (2), be equipped with a piston shaft (616) in the both ends of stirring main rod (6) respectively, the externally mounted of piston shaft (616) has processing bulb (617), the top of crystallizer (2) is all located in gas support piece and agitator motor (4), gas support piece and stirring main rod (6) intercommunication in, agitator motor (4) are connected with the transmission of telescopic part, knockout drum (9) are installed to the lower extreme of crystallizer (2), install draft tube (911) in knockout drum (9), be equipped with the headstock gear in draft tube (911).
2. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 1, wherein: the telescopic component comprises a spline shaft (7), a receiving shaft (712) and a pulley assembly, the upper end of the receiving shaft (712) is positioned above the crystallizing tank (2), the lower end of the receiving shaft vertically penetrates into the flow guide cavity (324), the receiving shaft (712) is in hinged fit with a water-cooling disc (31) close to the top end of the crystallizing tank (2), the receiving shaft (712) is of a hollow structure, one end of the spline shaft (7) is always positioned below the flow guide cavity (324), the other end of the spline shaft can be movably inserted into the receiving shaft (712), the length of the receiving shaft (712) is greater than that of the spline shaft (7), the receiving shaft (712) and the water-cooling disc (31) are coaxially arranged, the upper end of the receiving shaft (712) is sleeved with a chain wheel, a main shaft of a stirring motor (4) is in transmission connection with the chain wheel through a transmission chain, the lower end of the spline shaft (7) is provided with an extension shaft (5) matched with the spline shaft, stirring mobile jib (6) and extension axle (5) integrated into one piece to both longitudinal section are cross, and loose pulley assembly's output is in accomodating axle (712), and is connected with integral key shaft (7).
3. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 2, wherein: pulley assembly includes rotating electrical machines (8), rolling pulley (811), rubber rope pipe (812) and air guide piece (813), set up axial first gas pocket (711) that run through it along on integral key shaft (7), air guide piece (813) and integral key shaft (7) articulated cooperation, the gas props the piece and includes the air pump, the one end winding of rubber rope pipe (812) is on rolling pulley (811), and this one end of the input of air pump and rubber rope pipe (812) is linked together, the other end and air guide piece (813) fixed connection of rubber rope pipe (812), rubber rope pipe (812) are through communicating in air guide piece (813) and first gas pocket (711).
4. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 2, wherein: the number of the stirring main rods (6) is two, the two stirring main rods are respectively close to two ends of the extension shaft (5), and the extension directions of the two stirring main rods (6) are vertical to each other.
5. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 4, wherein: a positioning column (611) is fixedly installed in the middle section of the stirring main rod (6), one ends, close to the two piston shafts (616), of the two piston shafts are respectively and elastically connected with the positioning column (611) through a return spring (615), the contraction direction of the return spring (615) is parallel to the axial direction of the stirring main rod (6), each piston shaft (616) is respectively sleeved with a piston ring (612) which can be movably matched with the inner wall of the stirring main rod (6), a first cavity is formed between the two piston rings (612), one side, far away from the two piston rings (612), of each piston ring (613) is respectively provided with a sealing ring (613), the sealing rings (613) are movably matched with the piston shafts (616), the sealing rings (613) are fixedly connected with the inner wall of the stirring main rod (6), a material pushing ring (614) is installed between each processing ball head (617) and the corresponding sealing ring (613), and the material pushing ring (614) is fixedly, the processing ball head (617) is made of rubber materials, and processing salient points (618) are arranged on the outer surface of the processing ball head.
6. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 1, wherein: the on-off device comprises a sealing circular plate (10) and an on-off pipeline (1011), the sealing circular plate (10) is arranged at the bottom end of the crystallizing tank (2), the on-off pipeline (1011) is arranged below the sealing circular plate (10) and is positioned at the eccentric position of the sealing circular plate (10), and an on-off valve (1012) is arranged on the on-off pipeline (1011).
7. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 2, wherein: install in draft tube (911) and fill up bottom shaft (11), fill up the upper end of bottom shaft (11) and be in crystallizer (2) all the time to its lower extreme runs through sealed plectane (10) and extends to the lower extreme position in draft tube (911), fill up the articulated cooperation of bottom of upper end and the extension axle (5) of bottom shaft (11), fill up bottom shaft (11) and draft tube (911) coaxial line setting.
8. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 1, wherein: the water cooling disc (31) is of a hollow structure, a water inlet pipe (32) and a water outlet pipe (321) are symmetrically arranged on the periphery of the water cooling disc, and a water cooling pipe is wound outside the crystallization tank (2).
9. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 1, wherein: the upper half section of the separation tank (9) is communicated with a mother liquor pipe (12 a), and a filter plate (12 b) is sleeved outside the guide cylinder (911).
10. The MVR evaporative crystallization apparatus with the function of automatically processing crystal scale according to claim 1, wherein: the lower end of the separation tank (9) is communicated with an elutriation column (12) coaxial with the guide shell (911).
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| CN201910637907.1A CN112237751A (en) | 2019-07-16 | 2019-07-16 | MVR evaporation crystallization device with automatic crystal scale processing function |
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| CN201910637907.1A CN112237751A (en) | 2019-07-16 | 2019-07-16 | MVR evaporation crystallization device with automatic crystal scale processing function |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228301A (en) * | 1992-02-20 | 1993-09-07 | Tsukishima Kikai Co Ltd | Scraping-type indirectly cooling crystallization method |
| JP2004188349A (en) * | 2002-12-12 | 2004-07-08 | Mitsubishi Chemicals Corp | Crystal deposit producing apparatus and measuring device |
| RU40905U1 (en) * | 2004-06-01 | 2004-10-10 | Российская Федерация в лице Министерства Российской Федерации по атомной энергии | DEVICE FOR CONTINUOUS CRYSTALIZATION AND UNLOADING CRYSTALS |
| KR101133651B1 (en) * | 2011-05-11 | 2012-04-10 | (주)삼흥금속 | The methode for acquisition of pet and silver from the waste x-ray film |
| CN106745615A (en) * | 2017-01-11 | 2017-05-31 | 启迪桑德环境资源股份有限公司 | Cooler crystallizer |
| CN206276315U (en) * | 2016-12-02 | 2017-06-27 | 珠海市东昌颜料有限公司 | A kind of well mixed dye barrel |
| CN206424927U (en) * | 2017-01-05 | 2017-08-22 | 恒力石化（大连）有限公司 | A kind of chemical gas-liquid mixed reaction unit |
| CN206652266U (en) * | 2016-10-19 | 2017-11-21 | 江西乐维生物药业有限公司 | A kind of gas scrapes formula chemical crystallization kettle |
| CN107628697A (en) * | 2017-10-31 | 2018-01-26 | 曾国琼 | A kind of floor heating pipe water purification cleaning device |
| CN108246136A (en) * | 2018-03-19 | 2018-07-06 | 扬州市钰翔轻工机械设备厂 | A kind of uniformly mixed vacuum homogeneous emulsifying machine |
| CN108714311A (en) * | 2018-07-25 | 2018-10-30 | 江苏新宏大集团有限公司 | A kind of vertical vacuum crystallization apparatus |
| CN208081898U (en) * | 2018-02-11 | 2018-11-13 | 孟州市华兴生物化工有限责任公司 | A kind of beta-cyclodextrin equipment of crystallisation by cooling |
| CN108837548A (en) * | 2018-06-25 | 2018-11-20 | 郑州仁宏医药科技有限公司 | A kind of medical science exploitation drug evaporated crystallization device |
| CN109130067A (en) * | 2018-08-01 | 2019-01-04 | 新疆博沃友业工贸有限公司 | A kind of enhanced strength type resin processing and forming technology |
| CN109433054A (en) * | 2018-11-26 | 2019-03-08 | 浙江琰大新材料有限公司 | A kind of refractory material uniform mixing device |
| CN208877949U (en) * | 2018-10-08 | 2019-05-21 | 高安市飞腾新材料科技有限公司 | A kind of rush rapid crystallization device |
-
2019
- 2019-07-16 CN CN201910637907.1A patent/CN112237751A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228301A (en) * | 1992-02-20 | 1993-09-07 | Tsukishima Kikai Co Ltd | Scraping-type indirectly cooling crystallization method |
| JP2004188349A (en) * | 2002-12-12 | 2004-07-08 | Mitsubishi Chemicals Corp | Crystal deposit producing apparatus and measuring device |
| RU40905U1 (en) * | 2004-06-01 | 2004-10-10 | Российская Федерация в лице Министерства Российской Федерации по атомной энергии | DEVICE FOR CONTINUOUS CRYSTALIZATION AND UNLOADING CRYSTALS |
| KR101133651B1 (en) * | 2011-05-11 | 2012-04-10 | (주)삼흥금속 | The methode for acquisition of pet and silver from the waste x-ray film |
| CN206652266U (en) * | 2016-10-19 | 2017-11-21 | 江西乐维生物药业有限公司 | A kind of gas scrapes formula chemical crystallization kettle |
| CN206276315U (en) * | 2016-12-02 | 2017-06-27 | 珠海市东昌颜料有限公司 | A kind of well mixed dye barrel |
| CN206424927U (en) * | 2017-01-05 | 2017-08-22 | 恒力石化（大连）有限公司 | A kind of chemical gas-liquid mixed reaction unit |
| CN106745615A (en) * | 2017-01-11 | 2017-05-31 | 启迪桑德环境资源股份有限公司 | Cooler crystallizer |
| CN107628697A (en) * | 2017-10-31 | 2018-01-26 | 曾国琼 | A kind of floor heating pipe water purification cleaning device |
| CN208081898U (en) * | 2018-02-11 | 2018-11-13 | 孟州市华兴生物化工有限责任公司 | A kind of beta-cyclodextrin equipment of crystallisation by cooling |
| CN108246136A (en) * | 2018-03-19 | 2018-07-06 | 扬州市钰翔轻工机械设备厂 | A kind of uniformly mixed vacuum homogeneous emulsifying machine |
| CN108837548A (en) * | 2018-06-25 | 2018-11-20 | 郑州仁宏医药科技有限公司 | A kind of medical science exploitation drug evaporated crystallization device |
| CN108714311A (en) * | 2018-07-25 | 2018-10-30 | 江苏新宏大集团有限公司 | A kind of vertical vacuum crystallization apparatus |
| CN109130067A (en) * | 2018-08-01 | 2019-01-04 | 新疆博沃友业工贸有限公司 | A kind of enhanced strength type resin processing and forming technology |
| CN208877949U (en) * | 2018-10-08 | 2019-05-21 | 高安市飞腾新材料科技有限公司 | A kind of rush rapid crystallization device |
| CN109433054A (en) * | 2018-11-26 | 2019-03-08 | 浙江琰大新材料有限公司 | A kind of refractory material uniform mixing device |
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