Mother liquor separation device for evaporation and salt separation and separation method thereof

Abstract

The present invention provides a mother liquor separation device for evaporative salt separation and a separation method thereof, and belongs to the technical field of evaporative salt separation. The mother liquor separation device for evaporative salt separation comprises a separation tank, a pretreatment mechanism and a separation mechanism, a liquid inlet pipe is installed on the side wall of the separation tank, the pretreatment mechanism is installed in the inner cavity of the separation tank, and is used to pre-treat the mother liquor, the pretreatment mechanism comprises a liquid separation cylinder, a driving blade, a liquid injection cylinder and a first rotating shaft, and the liquid separation cylinder is fixedly installed in the inner cavity of the separation tank. The present invention sets a pretreatment mechanism, drives the blade to rotate, drives the first connecting rod and the first stirring rod to rotate synchronously, injects the precipitant in the liquid injection cylinder into the first cavity through the piston, and uniformly mixes the precipitant into the mother liquor through the first stirring rod, increases the precipitation efficiency of salt crystals, and sprays uniformly to the surface of the liquid separation disk through the first through hole, and then heats the liquid separation disk through the heating coil, further heats and evaporates the mother liquor flowing through the surface of the liquid separation disk, removes water vapor in the mother liquor, and further concentrates the mother liquor.

Description

Technical Field

[0001] The invention relates to the technical field of evaporation and salt separation, and in particular to a mother liquor separation device and a separation method for evaporation and salt separation. Background Art

[0002] Evaporative salt separation is a technology used to separate salt from a solution. It is mainly based on the different volatilities of solutes such as water and salt in the solution. When the solution evaporates, the water as a volatile substance will be converted into water vapor, while non-volatile solutes such as salt will remain in the solution and eventually settle to form solid crystals after the water completely evaporates. This process is widely used in seawater desalination, salt production and chemical separation.

[0003] Existing mother liquor separation devices for evaporative salt separation usually directly pass the mother liquor into the device and separate the crystal salt and the solvent by centrifugal separation. No pretreatment work such as concentrating the mother liquor and adding a precipitant is performed, resulting in low separation efficiency. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a mother liquor separation device for evaporation and salt separation and a separation method thereof that overcome the above technical problems or at least partially solve the above problems.

[0005] The present invention is achieved in that:

[0006] The present invention provides a mother liquor separation device for evaporation and salt separation and a separation method thereof, comprising a separation tank, a pretreatment mechanism and a separation mechanism, wherein a liquid inlet pipe is installed on the side wall of the separation tank, and the pretreatment mechanism is installed in the inner cavity of the separation tank for pretreatment of the mother liquor, and the pretreatment mechanism comprises:

[0007] A liquid separator, the liquid separator is fixedly mounted in the inner cavity of the separation tank, the liquid inlet pipe is in communication with the liquid separator, and a liquid separator plate is mounted at the bottom of the liquid separator;

[0008] A driving blade, the driving blade is rotatably mounted in the inner cavity of the liquid separation cylinder;

[0009] A liquid injection cylinder, which is fixedly mounted at the bottom of the liquid separation cylinder and is used to inject the precipitant into the mother liquid;

[0010] A first rotating shaft, the first rotating shaft is rotatably mounted in the inner cavity of the separation tank;

[0011] The separation mechanism is installed in the inner cavity of the separation tank and is used to separate salt from the mother liquor. The separation mechanism includes a separation cylinder, a second rotating shaft and a knocking block. The separation cylinder is rotatably installed in the inner cavity of the separation tank. The separation cylinder is fixedly connected to the first rotating shaft. A plurality of second rotating shafts are rotatably installed in the inner cavity of the separation tank. A connecting rope is fixedly connected to the side wall of the second rotating shaft. A knocking block is installed at the other end of the connecting rope for knocking the separation cylinder.

[0012] In a preferred embodiment, the side wall of the separation tank is connected to a liquid outlet pipe, the bottom of the separation tank is provided with a discharge groove, the bottom of the liquid separation plate is installed with a heating coil for heating the liquid separation plate, the inner cavity of the liquid separation cylinder is provided with a liquid outlet hole, the inner cavity of the liquid separation cylinder is provided with a first cavity, the liquid outlet hole is communicated with the first cavity, and the side wall of the liquid separation cylinder is provided with a plurality of first through holes, which are communicated with the first cavity.

[0013] In a preferred solution, a connecting cylinder is installed at the lower part of the driving blade, a first connecting rod is fixedly installed on the side wall of the connecting cylinder, and a plurality of first stirring rods are installed on the surface of the first connecting rod.

[0014] In a preferred embodiment, a second cavity is formed in the inner cavity of the liquid separation cylinder, a plurality of second through holes are formed in the side wall of the second cavity, the second through holes are communicated with the first cavity, a first one-way valve and a second one-way valve are installed on the surface of the injection cylinder, a solvent box is installed on the surface of the separation tank, an infusion tube is connected between the first one-way valve and the solvent box, and the second one-way valve is communicated with the second cavity.

[0015] In a preferred embodiment, a piston is slidably installed in the inner cavity of the injection cylinder, a first spring is installed in the inner cavity of the injection cylinder, one end of the first spring is fixedly connected to the injection cylinder, and the other end of the first spring is fixedly connected to the piston, which is used to drive the piston to move downward, and a driving disk is rotatably installed in the inner cavity of the injection cylinder, a first protrusion is symmetrically fixedly installed on the surface of the piston, a second protrusion is symmetrically fixedly installed on the surface of the driving disk, the driving disk is fixedly connected to one end of the first rotating shaft, a motor is installed at the bottom of the separation tank, and the output end of the motor is fixedly connected to the other end of the first rotating shaft.

[0016] In a preferred embodiment, a drainage cavity is provided in the inner cavity of the separation tank, the liquid outlet pipe is connected to the drainage cavity, discharge holes are symmetrically provided at the bottom of the separation cylinder, the discharge holes are connected to the discharge trough, a plurality of first shifting rods are fixedly installed on the side wall of the separation cylinder, a plurality of second shifting rods are fixedly installed on the side wall of the second rotating shaft, and the first shifting rods and the second shifting rods are vertically arranged.

[0017] In a preferred solution, a blocking block is symmetrically and slidingly installed at the bottom of the separation cylinder, a sliding block is fixedly installed on the surface of the blocking block, the sliding block is slidably installed in the inner cavity of the separation cylinder, a second spring is symmetrically installed in the inner cavity of the separation cylinder, one end of the second spring is fixedly connected to the separation cylinder, and the other end of the second spring is fixedly connected to the sliding block, a conical groove is provided in the inner cavity of the blocking block, a conical block is rotatably installed on the surface of the first rotating shaft for driving the blocking block, an electric telescopic rod is fixedly installed on the bottom of the separation tank, and the telescopic end of the electric telescopic rod is fixedly connected to the conical block.

[0018] In a preferred embodiment, a cleaning mechanism is installed in the inner cavity of the separation tank for cleaning residual salt; the cleaning mechanism includes a driving ring, a first scraper and a half gear ring, the driving ring is rotatably installed in the inner cavity of the separation tank, a plurality of first scrapers are installed on the inner wall of the driving ring, the first scrapers are in contact with the surface of the liquid separation disk, and are used to clean the salt precipitated on the surface of the liquid separation disk, a half gear ring is fixedly installed on the outer wall of the driving ring, a first gear is rotatably installed in the inner cavity of the separation tank, the first gear is meshed with the half gear ring, a tooth plate is slidably installed in the inner cavity of the separation tank, the tooth plate is meshed with the first gear, a second connecting rod is fixedly installed at one end of the tooth plate, a swing arm is symmetrically fixedly installed on the surface of the first rotating shaft, an eccentric shaft is fixedly installed between the two swing arms, and a third connecting rod is rotatably installed between the eccentric shaft and the second connecting rod.

[0019] In a preferred solution, a sleeve rod is rotatably sleeved on the surface of the first rotating shaft, a fourth connecting rod is fixedly mounted on the side wall of the sleeve rod, a second scraper is fixedly mounted on one end of the fourth connecting rod, the second scraper contacts the inner wall of the separation cylinder and is used to clean the salt remaining on the inner wall of the separation cylinder, a second gear is fixedly mounted on the surface of the sleeve rod, a third gear is fixedly mounted on the surface of the first rotating shaft, a fourth gear is rotatably mounted on the inner wall of the separation tank, the fourth gear is respectively meshed with the third gear and the second gear, a fifth connecting rod is fixedly mounted on the side wall of the first rotating shaft, a third scraper is fixedly mounted on one end of the fifth connecting rod, and the third scraper contacts the bottom of the separation cylinder.

[0020] The mother liquor separation method for evaporation and salt separation is applicable to any of the above-mentioned mother liquor separation devices for evaporation and salt separation, and comprises the following steps:

[0021] S1: pretreatment; the mother liquid is introduced into the liquid separation cylinder through the liquid inlet pipe, the driving blade is driven to rotate, and the first connecting rod and the first stirring rod are driven to rotate synchronously, and then the mother liquid enters the first cavity through the liquid outlet hole, and the precipitant in the liquid injection cylinder is injected into the second cavity through the piston, and the precipitant is mixed into the mother liquid through the first stirring rod, and then the mother liquid is sprayed onto the surface of the liquid separation disk through the first through hole, and the liquid separation disk is heated by the heating coil, and the mother liquid flowing through the surface of the liquid separation disk is further heated and evaporated, and the water vapor in the mother liquid is removed, and the mother liquid is further concentrated;

[0022] S2: separation; the mother liquor is centrifuged through the separation cylinder, and at the same time, the first lever drives the second lever to drive the second shaft to rotate synchronously, driving the knocking block to hit the side wall of the separation cylinder; when discharge is required, the electric telescopic rod drives the conical block to move downward, drives the two blocking blocks to move away, opens the discharge hole, and discharges the crystallized salt through the discharge trough;

[0023] S3: Cleaning; the first rotating shaft rotates to drive the swing arm and the eccentric shaft to rotate, drive the tooth plate to move back and forth, and drive the first scraper to clean the salt precipitated on the surface of the liquid separation plate; the second scraper is used to clean the salt remaining on the inner wall of the separation cylinder; and the third scraper is driven by the first rotating shaft to rotate synchronously to scrape the salt in the separation cylinder to prevent the salt from agglomerating.

[0024] The mother liquor separation device and separation method for evaporation and salt separation provided by the present invention have the following beneficial effects:

[0025] 1. By setting a pretreatment mechanism, the mother liquor is introduced into the liquid separation cylinder through the liquid inlet pipe, the driving blade is driven to rotate, and the first connecting rod and the first stirring rod are driven to rotate synchronously. Then the mother liquor enters the first cavity through the liquid outlet hole, and the first rotating shaft is driven to rotate by the motor, and the driving disk is driven to rotate synchronously. The precipitant in the liquid injection cylinder is injected into the first cavity through the piston, and the precipitant is evenly mixed into the mother liquor through the first stirring rod to increase the precipitation efficiency of salt crystals. It is evenly sprayed onto the surface of the liquid separation disk through the first through hole, and then the liquid separation disk is heated by the heating coil, and the mother liquor flowing through the surface of the liquid separation disk is further heated and evaporated, the water vapor in the mother liquor is removed, and the mother liquor is further concentrated.

[0026] 2. By setting up a separation mechanism, the separation cylinder rotates to centrifugally separate the mother liquor that falls into the separation cylinder, so that the salt crystals remain at the bottom of the separation cylinder, and the uncrystallized liquid is thrown into the drainage chamber and discharged through the liquid outlet pipe. At the same time, the first lever drives the second lever to drive the second rotating shaft to rotate synchronously, and drives the knocking block to hit the side wall of the separation cylinder through the connecting rope to prevent the separation cylinder from being blocked and ensure the separation efficiency.

[0027] 3. By setting up a cleaning mechanism, when the motor drives the first rotating shaft to rotate, it drives the swing arm and the eccentric shaft to rotate, drives the tooth plate to move back and forth, and drives the first scraper to clean the salt precipitated on the surface of the liquid separation plate; at the same time, the first rotating shaft drives the third gear to rotate synchronously, drives the fourth gear to rotate, thereby drives the second gear to drive the sleeve rod to rotate, and cleans the salt remaining on the inner wall of the separation cylinder through the second scraper; and the first rotating shaft drives the third scraper to rotate synchronously to scrape the salt in the separation cylinder to prevent the salt from agglomerating. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a cross-sectional view of a separation tank provided in an embodiment of the present invention;

[0030] Figure 2 A stereogram provided for an embodiment of the present invention;

[0031] Figure 3 A side cross-sectional view of an embodiment of the present invention is provided;

[0032] Figure 4 The embodiments of the present invention provide Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 A cross-sectional view of a liquid separation plate provided in an embodiment of the present invention;

[0034] Figure 6 A three-dimensional diagram of a liquid separation plate provided in an embodiment of the present invention;

[0035] Figure 7 A three-dimensional diagram of a driving blade provided in an embodiment of the present invention;

[0036] Figure 8 A three-dimensional diagram of a separation cylinder provided in an embodiment of the present invention;

[0037] Fig. 9 A partial exploded view of a cleaning mechanism provided in an embodiment of the present invention;

[0038] In the figure: 1, separation tank; 2, liquid inlet pipe; 3, liquid outlet pipe; 4, discharge trough; 501, liquid separator; 502, liquid separator plate; 503, heating coil; 504, drive leaf; 505, liquid outlet hole; 506, first cavity; 507, first through hole; 508, first connecting rod; 509, first stirring rod; 510, second cavity; 511, second through hole; 512, injection cylinder; 513, piston; 514, first spring; 515, first one-way valve; 516, solvent box; 517, second one-way valve; 518, drive plate; 519, first convex block; 520, second convex block; 521, motor; 522, first rotating shaft; 6, separation mechanism; 601, separation cylinder; 602, liquid discharge cavity; 603, discharge hole; 604, the first lever; 605, the second rotating shaft; 606, the second lever; 607, the connecting rope; 608, the knocking block; 609, the blocking block; 610, the sliding block; 611, the second spring; 612, the conical groove; 613, the conical block; 614, the electric telescopic rod; 7, the cleaning mechanism; 701, the driving ring; 702, the first scraper; 703, the half gear ring; 704, the first gear; 705, the gear plate; 706, the second connecting rod; 707, the swing arm; 708, the eccentric shaft; 709, the third connecting rod; 710, the sleeve rod; 711, the fourth connecting rod; 712, the second scraper; 713, the second gear; 714, the third gear; 715, the fourth gear; 716, the fifth connecting rod; 717, the third scraper. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Reference Figure 1-Figure 9 As shown, the present invention provides a technical solution: a mother liquor separation device for evaporation and salt separation, comprising a separation tank 1, a pretreatment mechanism and a separation mechanism 6, wherein a liquid inlet pipe 2 is installed on the side wall of the separation tank 1 for introducing mother liquor, a liquid outlet pipe 3 is connected to the side wall of the separation tank 1 for discharging uncrystallized liquid, a discharge trough 4 is provided at the bottom of the separation tank 1 for discharging salt crystals, the pretreatment mechanism is installed in the inner cavity of the separation tank 1 for pretreatment of the mother liquor, the pretreatment mechanism comprises a liquid separator 501, a driving blade 504, a liquid injection cylinder 512 and a first rotating shaft 522, the liquid separator 501 is fixedly installed in the inner cavity of the separation tank 1, the liquid inlet pipe 2 is connected to the liquid separator 501, a liquid separator plate 502 is installed at the bottom of the liquid separator 501 for uniformly introducing the mother liquor into the inner cavity of the separation tank 1, a heating coil 503 is installed at the bottom of the liquid separator plate 502 for heating the liquid separator plate 502, and the mother liquor flowing through the surface of the liquid separator plate 502 is further heated and evaporated, water vapor in the mother liquor is removed, and the mother liquor is further concentrated.

[0041] Reference Figure 1-Figure 7 As shown, in a preferred embodiment, the driving blade 504 is rotatably installed in the inner cavity of the liquid separator 501, a liquid outlet hole 505 is provided in the inner cavity of the liquid separator 501, a first cavity 506 is provided in the inner cavity of the liquid separator 501, the liquid outlet hole 505 is communicated with the first cavity 506, a plurality of first through holes 507 are provided on the side wall of the liquid separator 501, the first through holes 507 are communicated with the first cavity 506, a connecting tube is installed at the lower part of the driving blade 504, a first connecting rod 508 is fixedly installed on the side wall of the connecting tube, and a plurality of first stirring rods 509 are installed on the surface of the first connecting rod 508, the mother liquor is introduced into the liquid separator 501 through the liquid inlet pipe 2, and impacts the driving blade 504, driving the driving blade 504 to rotate, and then the mother liquor enters the first cavity 506 through the liquid outlet hole 505, and is evenly sprayed onto the surface of the liquid separator plate 502 through the first through holes 507.

[0042] Reference Figure 1-Figure 7As shown, in a preferred embodiment, the inner cavity of the liquid separator 501 is provided with a second cavity 510, and the side wall of the second cavity 510 is provided with a plurality of second through holes 511, the second through holes 511 are communicated with the first cavity 506, the injection cylinder 512 is fixedly installed at the bottom of the liquid separator 501, and is used to inject the precipitant into the mother liquor, and the surface of the injection cylinder 512 is provided with a first one-way valve 515 and a second one-way valve 517, the first one-way valve 515 is unidirectionally conducted toward the inner cavity of the injection cylinder 512 for liquid inlet, and the second one-way valve 517 is unidirectionally conducted toward the second cavity 510 for liquid outlet, and the surface of the separation tank 1 is provided with a solvent box 516 for storing the precipitant, an infusion tube is connected between the first one-way valve 515 and the solvent box 516, and the second one-way valve 517 is communicated with the second cavity 510.

[0043] Reference Figure 1-Figure 7 As shown, in a preferred embodiment, the first rotating shaft 522 is rotatably installed in the inner cavity of the separation tank 1, the piston 513 is slidably installed in the inner cavity of the liquid injection cylinder 512, and the first spring 514 is installed in the inner cavity of the liquid injection cylinder 512. One end of the first spring 514 is fixedly connected to the liquid injection cylinder 512, and the other end of the first spring 514 is fixedly connected to the piston 513 for driving the piston 513 to move downward. A driving disk 518 is rotatably installed in the inner cavity of the liquid injection cylinder 512, and a first protrusion 519 is symmetrically fixedly installed on the surface of the piston 513. A second protrusion 520 is symmetrically fixedly installed on the surface of the driving disk 518, and the driving disk 518 is fixedly connected to one end of the first rotating shaft 522. A motor 521 is installed at the bottom of the separation tank 1, and the output end of the motor 521 is connected to the first rotating shaft 52 2, the other end is fixedly connected, when the motor 521 drives the first rotating shaft 522 to rotate, the driving disk 518 is driven to rotate synchronously, and the first protrusion 519 is squeezed by the second protrusion 520, driving the piston 513 to move up and down reciprocatingly, when the piston 513 moves down, the first one-way valve 515 is turned on, and the precipitant in the solvent box 516 is sucked into the injection cylinder 512, when the piston 513 moves up, the second one-way valve 517 is turned on, and the precipitant in the injection cylinder 512 is injected into the second cavity 510, and injected into the first cavity 506 through the second through hole 511, and under the action of the driving blade 504, the first connecting rod 508 and the first stirring rod 509 are driven to rotate synchronously, and the precipitant is evenly mixed into the mother liquor, thereby increasing the precipitation efficiency of salt crystals.

[0044] In a preferred embodiment, when in use, the mother liquid is introduced into the liquid separation cylinder 501 through the liquid inlet pipe 2, and impacts the driving blade 504, driving the driving blade 504 to rotate, driving the first connecting rod 508 and the first stirring rod 509 to rotate synchronously, and then the mother liquid enters the first cavity 506 through the liquid outlet hole 505, and is evenly sprayed onto the surface of the liquid separation plate 502 through the first through hole 507, and then the liquid separation plate 502 is heated by the heating coil 503, and the mother liquid flowing through the surface of the liquid separation plate 502 is further heated and evaporated, the water vapor in the mother liquid is removed, and the mother liquid is further concentrated; and the motor 521 is driven to drive the first connecting rod 508 and the first stirring rod 509 to rotate synchronously. A rotating shaft 522 rotates, driving the driving disk 518 to rotate synchronously, and the first protrusion 519 is squeezed by the second protrusion 520, driving the piston 513 to move up and down. When the piston 513 moves downward, the first one-way valve 515 is turned on, and the precipitant in the solvent tank 516 is sucked into the injection cylinder 512. When the piston 513 moves upward, the second one-way valve 517 is turned on, and the precipitant in the injection cylinder 512 is injected into the second cavity 510, and injected into the first cavity 506 through the second through hole 511, and the precipitant is evenly mixed into the mother liquor through the first stirring rod 509, thereby increasing the precipitation efficiency of salt crystals.

[0045] Reference Figure 1-Figure 9 As shown, in a preferred embodiment, the separation mechanism 6 is installed in the inner cavity of the separation tank 1, and is used to separate the salt from the mother liquor. The separation mechanism 6 includes a separation cylinder 601, a second rotating shaft 605 and a knocking block 608. The separation cylinder 601 is rotatably installed in the inner cavity of the separation tank 1, and is used to separate the uncrystallized liquid in the mother liquor. The separation cylinder 601 is fixedly connected to the first rotating shaft 522. A plurality of second rotating shafts 605 are rotatably installed in the inner cavity of the separation tank 1. A connecting rope 607 is fixedly connected to the side wall of the second rotating shaft 605. A knocking block 608 is installed at the other end of the connecting rope 607 for knocking the separation cylinder 601 to prevent the separation cylinder 601 from being blocked and ensure the separation efficiency. A drainage chamber 602 is opened in the inner cavity of the separation tank 1, and the liquid outlet pipe 3 is connected to the drainage chamber 602. The bottom of the separation cylinder 601 is symmetrically opened. There is a discharge hole 603, which is connected to the discharge trough 4. A plurality of first levers 604 are fixedly installed on the side wall of the separation cylinder 601, and a plurality of second levers 606 are fixedly installed on the side wall of the second rotating shaft 605. The first lever 604 and the second lever 606 are vertically arranged. The motor 521 drives the first rotating shaft 522 to drive the separation cylinder 601 to rotate, and the mother liquor falling into the separation cylinder 601 is centrifugally separated, so that the salt crystals remain at the bottom of the separation cylinder 601, and the uncrystallized liquid is thrown into the discharge cavity 602 and discharged through the liquid outlet pipe 3. At the same time, the first lever 604 drives the second lever 606 to drive the second rotating shaft 605 to rotate synchronously, and drives the knocking block 608 to hit the side wall of the separation cylinder 601 through the connecting rope 607 to prevent the separation cylinder 601 from being blocked, thereby ensuring the separation efficiency.

[0046] Reference Figure 1-Figure 9As shown, in a preferred embodiment, a blocking block 609 is symmetrically slidably installed at the bottom of the separation cylinder 601, which is used to block the discharge hole 603 and control the discharge. A slider 610 is fixedly installed on the surface of the blocking block 609, and the slider 610 is slidably installed in the inner cavity of the separation cylinder 601. A second spring 611 is symmetrically installed in the inner cavity of the separation cylinder 601, and one end of the second spring 611 is fixedly connected to the separation cylinder 601, and the other end of the second spring 611 is fixedly connected to the slider 610. Under the action of the second spring 611, the blocking block 609 is driven to move toward the center of the separation cylinder 601. The discharge hole 603 is blocked, a conical groove 612 is provided in the inner cavity of the blocking block 609, a conical block 613 is rotatably installed on the surface of the first rotating shaft 522, and is used to drive the blocking block 609. An electric telescopic rod 614 is fixedly installed at the bottom of the separation tank 1, and the telescopic end of the electric telescopic rod 614 is fixedly connected to the conical block 613. When discharging is required, the conical block 613 is driven downward by the electric telescopic rod 614, and the blocking block 609 is squeezed through the conical groove 612, driving the two blocking blocks 609 to move away, opening the discharge hole 603, and the crystallized salt can be discharged through the discharge groove 4.

[0047] In a preferred embodiment, when in use, the motor 521 drives the first rotating shaft 522 to drive the separation cylinder 601 to rotate, and the mother liquor falling into the separation cylinder 601 is centrifuged to leave the salt crystals at the bottom of the separation cylinder 601, and the uncrystallized liquid is thrown into the discharge chamber 602 and discharged through the liquid outlet pipe 3. At the same time, the first lever 604 drives the second lever 606 to drive the second rotating shaft 605 to rotate synchronously, and drives the knocking block 608 to hit the side wall of the separation cylinder 601 through the connecting rope 607 to prevent the separation cylinder 601 from being blocked and ensure the separation efficiency. When discharging is required, the conical block 613 is driven downward by the electric telescopic rod 614, and the blocking block 609 is squeezed through the conical groove 612 to drive the two blocking blocks 609 to move away, open the discharge hole 603, and discharge the crystallized salt through the discharge groove 4.

[0048] Reference Figure 1-Figure 9As shown, in a preferred embodiment, a cleaning mechanism 7 is installed in the inner cavity of the separation tank 1 for cleaning residual salt; the cleaning mechanism 7 includes a driving ring 701, a first scraper 702 and a half gear ring 703, the driving ring 701 is rotatably installed in the inner cavity of the separation tank 1, a plurality of first scrapers 702 are installed on the inner wall of the driving ring 701, the first scrapers 702 are in contact with the surface of the liquid separation plate 502, and are used to clean the salt precipitated on the surface of the liquid separation plate 502, a half gear ring 703 is fixedly installed on the outer wall of the driving ring 701, a first gear 704 is rotatably installed in the inner cavity of the separation tank 1, the first gear 704 is meshed with the half gear ring 703, a tooth plate 705 is slidably installed in the inner cavity of the separation tank 1, and the tooth plate 705 is in contact with the first gear 7 04 are meshed, a second connecting rod 706 is fixedly installed at one end of the tooth plate 705, a swing arm 707 is symmetrically fixedly installed on the surface of the first rotating shaft 522, an eccentric shaft 708 is fixedly installed between the two swing arms 707, and a third connecting rod 709 is rotatably installed between the eccentric shaft 708 and the second connecting rod 706. When the motor 521 drives the first rotating shaft 522 to rotate, it drives the swing arm 707 and the eccentric shaft 708 to rotate, thereby driving the tooth plate 705 to reciprocate through the third connecting rod 709 and the second connecting rod 706, driving the first gear 704 to reciprocate, and driving the half gear ring 703 to drive the drive ring 701 to reciprocate, thereby driving the first scraper 702 to clean the salt precipitated on the surface of the liquid separation plate 502.

[0049] Reference Figure 1-Figure 9 As shown, in a preferred embodiment, a sleeve rod 710 is rotatably sleeved on the surface of the first rotating shaft 522, a fourth connecting rod 711 is fixedly installed on the side wall of the sleeve rod 710, a second scraper 712 is fixedly installed on one end of the fourth connecting rod 711, the second scraper 712 is in contact with the inner wall of the separation cylinder 601, and is used to clean the salt remaining on the inner wall of the separation cylinder 601, a second gear 713 is fixedly installed on the surface of the sleeve rod 710, a third gear 714 is fixedly installed on the surface of the first rotating shaft 522, a fourth gear 715 is rotatably installed on the inner wall of the separation tank 1, the fourth gear 715 is respectively meshed with the third gear 714 and the second gear 713, a fifth connecting rod 716 is fixedly installed on the side wall of the first rotating shaft 522, a third scraper 717 is fixedly installed on one end of the fifth connecting rod 716, the third scraper 717 is in contact with the bottom of the separation cylinder 601, and is used to scrape the salt in the separation cylinder 601 to prevent the salt from agglomerating.

[0050] In a preferred embodiment, when the motor 521 drives the first rotating shaft 522 to rotate, it drives the swing arm 707 and the eccentric shaft 708 to rotate, thereby driving the tooth plate 705 to move back and forth through the third connecting rod 709 and the second connecting rod 706, driving the first gear 704 to rotate back and forth, and driving the half gear ring 703 to drive the drive ring 701 to rotate back and forth, thereby driving the first scraper 702 to clean the salt precipitated on the surface of the liquid separation plate 502; at the same time, the first rotating shaft 522 drives the third gear 714 to rotate synchronously, drives the fourth gear 715 to rotate, thereby driving the second gear 713 to drive the sleeve rod 710 to rotate, and cleans the salt remaining on the inner wall of the separation cylinder 601 through the second scraper 712; and the third scraper 717 is driven by the first rotating shaft 522 to rotate synchronously, and the salt in the separation cylinder 601 is scraped off to prevent the salt from agglomerating.

[0051] The mother liquor separation method for evaporation and salt separation is applicable to the mother liquor separation device for evaporation and salt separation, and comprises the following steps:

[0052] S1: pretreatment; the mother liquid is introduced into the liquid separation cylinder 501 through the liquid inlet pipe 2, the driving blade 504 is driven to rotate, and the first connecting rod 508 and the first stirring rod 509 are driven to rotate synchronously, and then the mother liquid enters the first cavity 506 through the liquid outlet hole 505, and the precipitant in the liquid injection cylinder 512 is injected into the second cavity 510 through the piston 513, and the precipitant is mixed into the mother liquid through the first stirring rod 509, and then the mother liquid is sprayed onto the surface of the liquid separation disk 502 through the first through hole 507, and the liquid separation disk 502 is heated by the heating coil 503, and the mother liquid flowing through the surface of the liquid separation disk 502 is further heated and evaporated, and the water vapor in the mother liquid is removed, and the mother liquid is further concentrated;

[0053] S2: separation; the mother liquor is centrifuged through the separation cylinder 601, and at the same time, the first lever 604 drives the second lever 606 to drive the second rotating shaft 605 to rotate synchronously, driving the knocking block 608 to hit the side wall of the separation cylinder 601; when discharging is required, the conical block 613 is driven downward by the electric telescopic rod 614, and the two blocking blocks 609 are driven away to move, and the discharge hole 603 is opened, and the crystallized salt can be discharged through the discharge trough 4;

[0054] S3: Cleaning; the first rotating shaft 522 rotates to drive the swing arm 707 and the eccentric shaft 708 to rotate, drive the tooth plate 705 to move back and forth, and drive the first scraper 702 to clean the salt precipitated on the surface of the liquid separation plate 502; the second scraper 712 is used to clean the salt remaining on the inner wall of the separation cylinder 601; and the third scraper 717 is driven by the first rotating shaft 522 to rotate synchronously to scrape the salt in the separation cylinder 601 to prevent the salt from agglomerating.

[0055] Specifically, the working principle of the mother liquid separation device for evaporative salt separation is as follows: when in use, the mother liquid is introduced into the liquid separation cylinder 501 through the liquid inlet pipe 2, and impacts the driving blade 504, driving the driving blade 504 to rotate, driving the first connecting rod 508 and the first stirring rod 509 to rotate synchronously, and then the mother liquid enters the first cavity 506 through the liquid outlet hole 505, and is uniformly sprayed onto the surface of the liquid separation plate 502 through the first through hole 507, and then the liquid separation plate 502 is heated by the heating coil 503, and the mother liquid flowing through the surface of the liquid separation plate 502 is further heated and evaporated, the water vapor in the mother liquid is removed, and the mother liquid is further concentrated; and the motor 5 21 drives the first rotating shaft 522 to rotate, driving the driving disk 518 to rotate synchronously, and the first protrusion 519 is squeezed by the second protrusion 520, driving the piston 513 to move up and down reciprocatingly. When the piston 513 moves down, the first one-way valve 515 is turned on, and the precipitant in the solvent box 516 is sucked into the injection cylinder 512. When the piston 513 moves up, the second one-way valve 517 is turned on, and the precipitant in the injection cylinder 512 is injected into the second cavity 510, and injected into the first cavity 506 through the second through hole 511, and the precipitant is evenly mixed into the mother liquor through the first stirring rod 509, thereby increasing the precipitation efficiency of salt crystals.

[0056] The motor 521 drives the first rotating shaft 522 to drive the separation cylinder 601 to rotate, and the mother liquor falling into the separation cylinder 601 is centrifuged to leave the salt crystals at the bottom of the separation cylinder 601, and the uncrystallized liquid is thrown into the discharge chamber 602 and discharged through the liquid outlet pipe 3. At the same time, the first lever 604 drives the second lever 606 to drive the second rotating shaft 605 to rotate synchronously, and drives the knocking block 608 to hit the side wall of the separation cylinder 601 through the connecting rope 607 to prevent the separation cylinder 601 from being blocked and ensure the separation efficiency. When discharging is required, the conical block 613 is driven downward by the electric telescopic rod 614, and the blocking block 609 is squeezed through the conical groove 612 to drive the two blocking blocks 609 to move away, open the discharge hole 603, and discharge the crystallized salt through the discharge groove 4.

[0057] When the motor 521 drives the first rotating shaft 522 to rotate, it drives the swing arm 707 and the eccentric shaft 708 to rotate, thereby driving the tooth plate 705 to move back and forth through the third connecting rod 709 and the second connecting rod 706, driving the first gear 704 to rotate back and forth, and driving the half gear ring 703 to drive the driving ring 701 to rotate back and forth, thereby driving the first scraper 702 to clean the salt precipitated on the surface of the liquid separation plate 502; at the same time, the first rotating shaft 522 drives the third gear 714 to rotate synchronously, drives the fourth gear 715 to rotate, thereby driving the second gear 713 to drive the sleeve rod 710 to rotate, and cleans the salt remaining on the inner wall of the separation cylinder 601 through the second scraper 712; and the third scraper 717 is driven to rotate synchronously through the first rotating shaft 522 to scrape off the salt in the separation cylinder 601 to prevent the salt from agglomerating.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0059] It should be noted that the heating coil 503, the motor 521 and the electric telescopic rod 614 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they are not described in detail.

Claims

1. A mother liquor separation device for evaporation and salt separation, characterized in that: The invention comprises a separation tank (1), a pretreatment mechanism and a separation mechanism (6), wherein a liquid inlet pipe (2) is installed on the side wall of the separation tank (1), and the pretreatment mechanism is installed in the inner cavity of the separation tank (1) and is used to pretreat the mother liquid. The pretreatment mechanism comprises: A liquid separator (501), the liquid separator (501) being fixedly mounted in the inner cavity of the separation tank (1), the liquid inlet pipe (2) being in communication with the liquid separator (501), and a liquid separator plate (502) being mounted at the bottom of the liquid separator (501); A driving blade (504), wherein the driving blade (504) is rotatably mounted in the inner cavity of the liquid separation cylinder (501); A liquid injection cylinder (512), the liquid injection cylinder (512) is fixedly mounted at the bottom of the liquid separation cylinder (501) and is used to inject a precipitant into the mother liquid; A first rotating shaft (522), the first rotating shaft (522) being rotatably mounted in the inner cavity of the separation tank (1); The separation mechanism (6) is installed in the inner cavity of the separation tank (1) and is used to separate salt from mother liquor. The separation mechanism (6) comprises a separation cylinder (601), a second rotating shaft (605) and a knocking block (608). The separation cylinder (601) is rotatably installed in the inner cavity of the separation tank (1). The separation cylinder (601) is fixedly connected to the first rotating shaft (522). A plurality of second rotating shafts (605) are rotatably installed in the inner cavity of the separation tank (1). A connecting rope (607) is fixedly connected to the side wall of the second rotating shaft (605). A knocking block (608) is installed at the other end of the connecting rope (607) for knocking the separation cylinder (601). The side wall of the separation tank (1) is connected to a liquid outlet pipe (3); the bottom of the separation tank (1) is provided with a discharge groove (4); the bottom of the liquid separation plate (502) is provided with a heating coil (503) for heating the liquid separation plate (502); the inner cavity of the liquid separation cylinder (501) is provided with a liquid outlet hole (505); the inner cavity of the liquid separation cylinder (501) is provided with a first cavity (506); the liquid outlet hole (505) is in conduction with the first cavity (506); the side wall of the liquid separation cylinder (501) is provided with a plurality of first through holes (507); the first through holes (507) are in conduction with the first cavity (506); A connecting cylinder is installed at the lower part of the driving blade (504), a first connecting rod (508) is fixedly installed on the side wall of the connecting cylinder, and a plurality of first stirring rods (509) are installed on the surface of the first connecting rod (508); The inner cavity of the liquid separation cylinder (501) is provided with a second cavity (510), the side wall of the second cavity (510) is provided with a plurality of second through holes (511), the second through holes (511) are in communication with the first cavity (506), a first one-way valve (515) and a second one-way valve (517) are mounted on the surface of the liquid injection cylinder (512), a solvent box (516) is mounted on the surface of the separation tank (1), a liquid infusion tube is connected between the first one-way valve (515) and the solvent box (516), and the second one-way valve (517) is in communication with the second cavity (510); A piston (513) is slidably mounted in the inner cavity of the injection cylinder (512); a first spring (514) is mounted in the inner cavity of the injection cylinder (512); one end of the first spring (514) is fixedly connected to the injection cylinder (512); the other end of the first spring (514) is fixedly connected to the piston (513) and is used to drive the piston (513) to move downward; a driving disk (518) is rotatably mounted in the inner cavity of the injection cylinder (512); a first protrusion (519) is symmetrically fixedly mounted on the surface of the piston (513); a second protrusion (520) is symmetrically fixedly mounted on the surface of the driving disk (518); the driving disk (518) is fixedly connected to one end of a first rotating shaft (522); a motor (521) is mounted at the bottom of the separation tank (1); an output end of the motor (521) is fixedly connected to the other end of the first rotating shaft (522).

2. The mother liquor separation device for evaporation and salt separation according to claim 1, characterized in that: The inner cavity of the separation tank (1) is provided with a liquid discharge cavity (602), the liquid outlet pipe (3) is connected to the liquid discharge cavity (602), the bottom of the separation cylinder (601) is symmetrically provided with discharge holes (603), the discharge holes (603) are connected to the discharge groove (4), a plurality of first shifting rods (604) are fixedly mounted on the side wall of the separation cylinder (601), and a plurality of second shifting rods (606) are fixedly mounted on the side wall of the second rotating shaft (605), and the first shifting rods (604) and the second shifting rods (606) are vertically arranged.

3. The mother liquor separation device for evaporation and salt separation according to claim 2, characterized in that: A blocking block (609) is symmetrically and slidably mounted at the bottom of the separation cylinder (601), a sliding block (610) is fixedly mounted on the surface of the blocking block (609), the sliding block (610) is slidably mounted in the inner cavity of the separation cylinder (601), a second spring (611) is symmetrically mounted in the inner cavity of the separation cylinder (601), one end of the second spring (611) is fixedly connected to the separation cylinder (601), and the other end of the second spring (611) is fixedly connected to the sliding block (610), a conical groove (612) is provided in the inner cavity of the blocking block (609), a conical block (613) is rotatably mounted on the surface of the first rotating shaft (522) for driving the blocking block (609), and an electric telescopic rod (614) is fixedly mounted on the bottom of the separation tank (1), and the telescopic end of the electric telescopic rod (614) is fixedly connected to the conical block (613).

4. The mother liquor separation device for evaporation and salt separation according to claim 1, characterized in that: The inner cavity of the separation tank (1) is provided with a cleaning mechanism (7) for cleaning residual salt; the cleaning mechanism (7) comprises a drive ring (701), a first scraper (702) and a half gear ring (703); the drive ring (701) is rotatably mounted in the inner cavity of the separation tank (1); a plurality of first scrapers (702) are mounted on the inner wall of the drive ring (701); the first scrapers (702) are in contact with the surface of the liquid separation plate (502) and are used to clean salt precipitated on the surface of the liquid separation plate (502); the half gear ring (703) is fixedly mounted on the outer wall of the drive ring (701); the inner cavity of the separation tank (1) is rotatably mounted in the inner cavity of the separation tank (1); A first gear (704) is movably mounted on the inner cavity of the separation tank (1), the first gear (704) meshes with the half gear ring (703), a toothed plate (705) is slidably mounted on the inner cavity of the separation tank (1), the toothed plate (705) meshes with the first gear (704), a second connecting rod (706) is fixedly mounted on one end of the toothed plate (705), a swing arm (707) is symmetrically fixedly mounted on the surface of the first rotating shaft (522), an eccentric shaft (708) is fixedly mounted between the two swing arms (707), and a third connecting rod (709) is rotatably mounted between the eccentric shaft (708) and the second connecting rod (706).

5. The mother liquor separation device for evaporation and salt separation according to claim 4, characterized in that: A sleeve rod (710) is rotatably sleeved on the surface of the first rotating shaft (522), a fourth connecting rod (711) is fixedly mounted on the side wall of the sleeve rod (710), a second scraper (712) is fixedly mounted on one end of the fourth connecting rod (711), the second scraper (712) is in contact with the inner wall of the separation cylinder (601) and is used to clean the salt remaining on the inner wall of the separation cylinder (601), a second gear (713) is fixedly mounted on the surface of the sleeve rod (710), and the first rotating shaft (522) is fixedly mounted on the side wall of the sleeve rod (710). ) is fixedly mounted on the surface of the separation tank (522); a fourth gear (715) is rotatably mounted on the inner wall of the separation tank (1); the fourth gear (715) is meshed with the third gear (714) and the second gear (713) respectively; a fifth connecting rod (716) is fixedly mounted on the side wall of the first rotating shaft (522); a third scraper (717) is fixedly mounted on one end of the fifth connecting rod (716); the third scraper (717) is in contact with the bottom of the separation cylinder (601).

6. A method for separating mother liquor for evaporation and salt separation, applicable to the mother liquor separation device for evaporation and salt separation as claimed in any one of claims 1 to 5, characterized in that: The steps include: S1: pretreatment; the mother liquid is introduced into the liquid separation cylinder (501) through the liquid inlet pipe (2), the driving blade (504) is driven to rotate, and the first connecting rod (508) and the first stirring rod (509) are driven to rotate synchronously, and then the mother liquid enters the first cavity (506) through the liquid outlet hole (505), and the precipitant in the liquid injection cylinder (512) is injected into the second cavity (510) through the piston (513), and the precipitant is mixed into the mother liquid through the first stirring rod (509), and then the mother liquid is sprayed onto the surface of the liquid separation plate (502) through the first through hole (507), and the liquid separation plate (502) is heated by the heating coil (503), and the mother liquid flowing through the surface of the liquid separation plate (502) is further heated and evaporated, and the water vapor in the mother liquid is removed, and the mother liquid is further concentrated; S2: separation; The mother liquor is centrifuged through the separation cylinder (601), and at the same time, the first lever (604) drives the second lever (606) to drive the second rotating shaft (605) to rotate synchronously, driving the knocking block (608) to impact the side wall of the separation cylinder (601); when discharge is required, the electric telescopic rod (614) drives the conical block (613) to move downward, drives the two blocking blocks (609) to move away, and opens the discharge hole (603), so that the crystallized salt can be discharged through the discharge trough (4); S3: cleaning; the first rotating shaft (522) rotates to drive the swing arm (707) and the eccentric shaft (708) to rotate, driving the tooth plate (705) to move back and forth, driving the first scraper (702) to clean the salt precipitated on the surface of the liquid separation plate (502); the second scraper (712) is used to clean the salt remaining on the inner wall of the separation cylinder (601); and the first rotating shaft (522) drives the third scraper (717) to rotate synchronously to scrape the salt in the separation cylinder (601) to prevent the salt from agglomerating.

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