An anti-caking device for cooling crystallization system

Abstract

The present invention belongs to the field of cooling crystallization, and in particular to an anti-caking material device used in a cooling crystallization system, which includes a bracket, a crystallization tube, a sedimentation tank, a motor A, a spiral blade, an extrusion plate, a motor B, a feed pipe, a cooling tube, and a crystal crushing mechanism, wherein a spiral blade that discharges sediment to a discharge port under the drive of the motor A is installed in a semicircular sedimentation tank with an inclined axis at the lower end of the crystallization tube. The present invention effectively crushes the crystal grain blocks in the crystal liquid coming out of the feed pipe through the crystal crushing mechanism at the end of the feed pipe, and reciprocates and squeezes the precipitated crystal grains moving along the axis of the spiral blade through the extrusion plate that reciprocates around the axis of the spiral blade at the bottom of the sedimentation tank to effectively crush the larger crystal grain blocks in the sedimentation tank, thereby preventing the crystal grain blocks from blocking the discharge port, and preventing the crystal grains in the spiral blade from being squeezed into blocks to affect the subsequent process.

Description

Technical Field

[0001] The invention belongs to the field of cooling crystallization, and in particular relates to an anti-caking material device used in a cooling crystallization system. Background Art

[0002] The cooling crystallization system is a commonly used preparation facility in the lithium production industry. The following problems exist during use:

[0003] 1. During the crystallization process, the fluid flows slowly. The crystal particles collide with other crystal particles during the crystal growth process and stick together to form large crystal particles. The large crystal particles tend to aggregate into blocks after precipitation and block the discharge port during subsequent discharge.

[0004] 2. There is a contraction slope at the bottom of the discharge port. Crystal particles are easily attached to the contraction slope. Generally, a scraper is used to scrape them off. The crystal particles scraped off from the slope will form flake crystals, which is not conducive to discharge and subsequent processes. In addition, there is also a way to suppress the attachment of precipitated crystals on the slope by blowing air on the slope, but the gas consumption and energy consumption are large.

[0005] 3. The discharge port generally uses a spiral structure for discharging. During the relative movement of the spiral blade and the channel, the crystal particles are squeezed and easily become blocks, thus affecting the subsequent processes.

[0006] The present invention designs an anti-caking material device used in a cooling crystallization system to solve the above problems. Summary of the invention

[0007] In order to solve the defects in the prior art, the present invention discloses an anti-caking device for use in a cooling crystallization system, which is implemented by adopting the following technical solutions.

[0008] A device for preventing caking of materials used in a cooling crystallization system comprises a bracket, a crystallization cylinder, a settling tank, a motor A, a spiral blade, an extrusion plate, a motor B, a feed pipe, a cooling pipe, and a crystal crushing mechanism, wherein a spiral blade is installed in a semicircular settling tank with an inclined axis at the lower end of the crystallization cylinder, and is driven by the motor A to discharge sediment to a discharge port; a plurality of arc-shaped extrusion plates are distributed along the central axis of the spiral blade and cooperate with the spiral blade under the unified drive of the motor B, and the movement directions of any two adjacent extrusion plates are opposite.

[0009] The two symmetrical inclined surfaces at the lower end of the crystallization cylinder that guide the precipitate into the sedimentation tank are provided with a structure to prevent a large amount of precipitate from adhering; a feed pipe connected to the feed port at the upper end of the crystallization cylinder is installed on the outer side of the crystallization cylinder, and a cooling pipe is installed on the feed pipe to uniformly spray a cooling liquid with a density less than that of the crystallization liquid into the initial section thereof; a crystal crushing mechanism for crushing the falling crystal blocks is installed at the end of the feed pipe, and a structure is provided at the feed port and below the feed port to prevent the crystallization liquid from splashing to the wall of the crystallization cylinder to cause crystal adhesion by making the crystallization liquid fall from the middle of the crystallization cylinder and diffuse around; the side wall of the crystallization cylinder has a structure to discharge the liquid inside it.

[0010] As a further improvement of the present technology, the crystal crushing mechanism includes a rotating shaft C, a gear B, a gear C, a motor C, a ring sleeve, a crystal crushing plate A, and a crystal crushing column, wherein a vertical rotating shaft C is rotatably matched in two ring sleeves installed at the end of the feed pipe through a fixed rod B; a gear B is installed at the upper end of the rotating shaft C, and the gear B is meshed with the gear C on the output shaft of the motor C at the top of the crystallization cylinder; a crystal crushing plate A is installed at the lower end of the rotating shaft C, and crystal crushing columns are evenly distributed on the inner wall of the crystal crushing plate A.

[0011] As a further improvement of the present technology, the crystal crushing mechanism includes a rotating shaft C, a gear B, a gear C, a motor C, a ring sleeve, a crystal crushing plate A, a crystal crushing column, a sleeve, a gear D, and a crystal crushing plate B, wherein a vertical sleeve is rotatably matched in two ring sleeves installed in the end of the feed pipe through a fixed rod B, and a vertical rotating shaft C is rotatably matched in the sleeve; a gear D is installed at the upper end of the sleeve, and a gear B is installed at the upper end of the rotating shaft C; gears B and gear D are simultaneously engaged with gear C on the output shaft of the motor C at the top of the crystallization tube; a crystal crushing plate A is installed at the lower end of the rotating shaft C, and crystal crushing columns are evenly distributed on the inner wall of the crystal crushing plate A; a mesh crystal crushing plate B is installed at the lower end of the sleeve, which leaks liquid onto the crystal crushing plate A and grinds and crushes the grain blocks in the crystallization liquid with the cooperation of the crystal crushing plate A, and the rotation directions of the crystal crushing plate A and the crystal crushing plate B are opposite.

[0012] As a further improvement of the present technology, the diameter and height of the broken crystal column are 5 mm and 1 mm respectively; the gap width between any two adjacent broken crystal columns on the inner wall of the broken crystal plate A is 1 mm.

[0013] As a further improvement of the present technology, a shielding cover is installed at the feed inlet of the crystallization cylinder, which can gather the crystallization liquid scattered under the guidance of the crystal crushing disk A or the crystal crushing disk B to the middle of the crystallization cylinder to prevent the crystal grains from adhering to the inner wall of the crystallization cylinder; an annular cylinder is installed below the crystal crushing disk A or the crystal crushing disk B through a fixed rod A, which can guide the crystallization liquid gathered by the shielding cover to the middle of the crystallization cylinder and reduce the fluctuation of the crystallization liquid in the crystallization cylinder.

[0014] As a further improvement of the present technology, blowing grooves connected to the air pump are evenly distributed on the inclined surface at the lower end of the crystallization tube, the inclined inner wall above the blowing groove has an inner concave arc surface A, and the inclined inner wall below the blowing groove has an outer convex arc surface B; each blowing groove is divided into several parts by several grid plates along its length direction, and each part is divided into two parts distributed upper and lower by a guide plate that guides air to the corresponding arc surface A and arc surface B to prevent grains from adhering to the inner wall of the inclined surface.

[0015] As a further improvement of the present technology, the spiral blades are installed on a rotating shaft A that rotates in the sedimentation tank, and the rotating shaft A is connected to the output shaft of the motor A on the outside of the crystallization cylinder; a rotating shaft B that is connected to the output shaft of the motor B is installed on the outside of the sedimentation tank; the extrusion plates with the same movement direction are connected by a synchronous frame, and the synchronous frame is equipped with two arc-shaped racks that mesh with the gear A on the rotating shaft B.

[0016] As a further improvement of the present technology, the side wall of the crystallization cylinder is installed with a drain pipe A for discharging the crystallization liquid outward and a drain pipe B for discharging the cooling liquid outward.

[0017] Compared with the traditional cooling crystallization equipment, the present invention uses the crystal crushing mechanism at the end of the feed pipe to effectively perform the initial crushing of the crystal grain blocks in the crystallization liquid coming out of the feed pipe, and uses the extrusion plate that reciprocates around the central axis of the spiral sheet at the bottom of the sedimentation tank to reciprocate and extrude the precipitated crystal grains moving along the axis of the spiral sheet to effectively crush the larger crystal grain blocks in the sedimentation tank, thereby preventing the crystal grain blocks from clogging the discharge port and preventing the crystal particles in the spiral sheet from being squeezed into blocks to affect the subsequent processes.

[0018] The shielding cover and the ring cylinder in the present invention can drop the crystallization liquid coming out of the feed pipe from the middle of the crystallization cylinder to prevent the crystallization liquid from splashing toward the inner wall of the crystallization cylinder to form crystal grains attached, thereby reducing the workload of cleaning the inner wall of the crystallization cylinder.

[0019] The two contraction slopes at the lower end of the crystallization tube are coordinated with the guide plate in the blowing groove and the arc surface A of the inner wall of the slope above the notch of the blowing groove and the arc surface B of the inner wall of the slope below, so that the air entering the crystallization tube from the blowing groove can effectively avoid the crystal grains in the crystallization liquid from adhering to the inner wall of the slope in large quantities, thereby reducing the cleaning work caused by the attached crystal grains on the inner wall of the slope.

[0020] The invention has a simple structure and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the present invention and its overall cross-sectional schematic diagram.

[0022] Figure 2 It is a cross-sectional schematic diagram of the cooperation between the crystal crushing mechanism, the shielding cover and the ring cylinder of the first scheme.

[0023] Figure 3It is a cross-sectional schematic diagram of the cooperation between the crystal crushing mechanism of the second scheme, the shielding cover and the ring cylinder.

[0024] Figure 4 It is a cross-sectional schematic diagram of the coordination between the spiral blade and the extrusion plate in the sedimentation tank.

[0025] Figure 5 It is a cross-sectional schematic diagram of the coordination of the spiral blade, the extrusion plate and the sedimentation tank.

[0026] Figure 6 It is a schematic diagram of the cross-section of the structure inside the blowing tank.

[0027] Figure 7 It is a schematic diagram of the crystallization cylinder.

[0028] Figure 8 It is a schematic diagram of the coordination between the grille plate and the guide plate.

[0029] Fig. 9 It is a schematic diagram of the extrusion plate with two viewing angles.

[0030] Fig.10 It is a schematic diagram of the local section of the extruded plate.

[0031] Fig.11 This is a schematic diagram of the distribution of broken crystal columns in broken crystal plate A.

[0032] Names of the reference numerals in the figure: 1, bracket; 2, crystallization cylinder; 3, feed port; 4, inclined plane; 5, blowing slot; 6, arc surface A; 7, arc surface B; 8, grid plate; 9, guide plate; 11, sedimentation tank; 12, discharge port; 13, shaft A; 14, motor A; 15, spiral sheet; 16, extrusion plate; 17, synchronous frame; 18, rack; 21, gear A; 22, shaft B; 23, motor B; 2 4. Drain pipe A; 25. Drain pipe B; 26. Ring tube; 27. Fixed rod A; 28. Feed pipe; 29. ​​Cooling pipe; 30. Crystal crushing mechanism; 31. Rotating shaft C; 32. Gear B; 33. Gear C; 34. Motor C; 35. Fixed rod B; 36. Ring sleeve; 37. Crystal crushing plate A; 38. Crystal crushing column; 39. Casing; 40. Gear D; 41. Crystal crushing plate B; 43. Shielding cover. DETAILED DESCRIPTION

[0033] The accompanying drawings are schematic diagrams of the present invention, which are provided to facilitate understanding of the operating principle of the structure. The specific product structure and proportional dimensions can be determined according to the use environment combined with conventional technology.

[0034] like Figure 1 As shown, it includes a support 1, a crystallization cylinder 2, a motor A14, a spiral sheet 15, an extrusion plate 16, a motor B23, a feed pipe 28, a cooling pipe 29, and a crystal crushing mechanism 30, wherein Figure 4 , 5As shown in , 7, a spiral piece 15 is installed in the semicircular sedimentation tank 11 with an inclined axis at the lower end of the crystallization cylinder 2, and is driven by a motor A14 to discharge sediment to the discharge port 12. The bottom of the sedimentation tank 11 reciprocates around the central axis of the spiral piece 15. There are a number of arc-shaped extrusion plates 16 distributed along the central axis of the spiral piece 15 and coordinated with the spiral piece 15 under the unified drive of the motor B23. The movement directions of any two adjacent extrusion plates 16 are opposite.

[0035] like Figure 5 , 6 As shown in , 7, the two symmetrical inclined surfaces 4 at the lower end of the crystallization cylinder 2 that guide the precipitate into the precipitation tank 11 have a structure to prevent a large amount of precipitate from adhering; Figure 1 As shown, a feed pipe 28 connected to the feed port 3 at the upper end of the crystallization cylinder 2 is installed on the outer side of the crystallization cylinder 2, and a cooling pipe 29 is installed on the feed pipe 28 to uniformly spray a cooling liquid with a density less than that of the crystallization liquid into the initial section thereof; Figure 1 , 2 As shown in FIG. 3 , a crystal crushing mechanism 30 for crushing the falling crystal blocks is installed at the end of the feed pipe 28, and a structure is provided at and below the feed port 3 to prevent the crystal liquid from splashing onto the wall of the crystallization cylinder 2 to cause crystal attachment by causing the crystal liquid to fall from the middle of the crystallization cylinder 2 and diffuse around; Figure 1 As shown, the side wall of the crystallization cylinder 2 has a structure for discharging the liquid inside it.

[0036] like Figure 2 As shown, the crystal crushing mechanism 30 includes a rotating shaft C31, a gear B32, a gear C33, a motor C34, a ring sleeve 36, a crystal crushing plate A37, and a crystal crushing column 38. Figure 2 As shown, a vertical shaft C31 is rotatably matched in two ring sleeves 36 installed in the end of the feed pipe 28 through a fixing rod B35; a gear B32 is installed on the upper end of the shaft C31, and the gear B32 is meshed with a gear C33 on the output shaft of the motor C34 at the top of the crystallization cylinder 2; a crystal crushing plate A37 is installed at the lower end of the shaft C31, and crystal crushing columns 38 are evenly distributed on the inner wall of the crystal crushing plate A37.

[0037] like Figure 3 As shown, the crystal crushing mechanism 30 includes a rotating shaft C31, a gear B32, a gear C33, a motor C34, a ring sleeve 36, a crystal crushing plate A37, a crystal crushing column 38, a sleeve 39, a gear D40, and a crystal crushing plate B41. Figure 3As shown, a vertical sleeve 39 is rotatably matched in two ring sleeves 36 installed in the end of the feed pipe 28 through a fixed rod B35, and a vertical rotating shaft C31 is rotatably matched in the sleeve 39; a gear D40 is installed on the upper end of the sleeve 39, and a gear B32 is installed on the upper end of the rotating shaft C31; the gear B32 and the gear D40 are simultaneously meshed with the gear C33 on the output shaft of the motor C34 at the top of the crystallization cylinder 2; a crystal breaking disk A37 is installed at the lower end of the rotating shaft C31, and crystal breaking columns 38 are evenly distributed on the inner wall of the crystal breaking disk A37; a mesh crystal breaking disk B41 is installed at the lower end of the sleeve 39, which leaks liquid onto the crystal breaking disk A37 and grinds and breaks the grain blocks in the crystallization liquid with the cooperation of the crystal breaking disk A37, and the rotation direction of the crystal breaking disk A37 is opposite to that of the crystal breaking disk B41.

[0038] like Fig.11 As shown, the diameter and height of the broken crystal column 38 are 5 mm and 1 mm respectively; the gap width between any two adjacent broken crystal columns 38 on the inner wall of the broken crystal plate A37 is 1 mm.

[0039] like Figure 2 , 3 As shown, a shielding cover 43 is installed at the feed port 3 in the crystallization cylinder 2 to gather the crystal liquid scattered and splashed under the guidance of the crystal crushing disk A37 or the crystal crushing disk B41 back to the middle of the crystallization cylinder 2 to prevent the crystal grains from adhering to the inner wall of the crystallization cylinder 2; Figure 1 As shown, an annular cylinder 26 is installed below the crystal crushing disk A37 or the crystal crushing disk B41 through a fixing rod A27 to guide the crystal liquid collected by the shielding cover 43 to the middle of the crystallization cylinder 2 and to reduce the fluctuation of the crystal liquid in the crystallization cylinder 2.

[0040] like Figure 6 , 7 As shown in , 8, blowing grooves 5 connected to the air pump are evenly distributed on the inclined surface 4 at the lower end of the crystallization tube 2, the inner wall of the inclined surface 4 above the blowing grooves 5 has an inner concave arc surface A6, and the inner wall of the inclined surface 4 below the blowing grooves 5 has an outer convex arc surface B7; each blowing groove 5 is divided into several parts by a plurality of grid plates 8 along its length direction, and each part is divided into two parts distributed upper and lower by a guide plate 9 which guides air to the corresponding arc surface A6 and arc surface B7 to prevent grains from adhering to the inner wall of the inclined surface 4.

[0041] like Figure 4 As shown, the spiral blade 15 is installed on the rotating shaft A13 in the precipitation tank 11, and the rotating shaft A13 is connected to the output shaft of the motor A14 outside the crystallization cylinder 2; the rotating shaft B22 connected to the output shaft of the motor B23 is installed outside the precipitation tank 11; Figure 4 , 5 As shown in FIG. 9 , the extrusion plates 16 with the same moving direction are connected by a synchronous frame 17 , on which are mounted two arc-shaped racks 18 meshing with the gear A21 on the rotating shaft B22 .

[0042] like Figure 1 As shown, the side wall of the crystallization cylinder 2 is installed with a drain pipe A24 for discharging crystallization liquid to the outside and a drain pipe B25 for discharging cooling liquid to the outside.

[0043] like Fig.10 As shown, the arc-shaped protrusion on one side of the extrusion plate 16 slides in the arc-shaped guide groove on one side of the adjacent extrusion plate 16 .

[0044] The workflow of the present invention is as follows:

[0045] When the present invention is used to cool and crystallize the crystal liquid, the air pump is first started to blow air into the crystal tube 2 through the blowing grooves 5 on the two inclined surfaces 4 at the lower end of the crystal tube 2, and then the motor C34 in the crystal crushing mechanism 30 is started. The motor C34 drives the crystal crushing mechanism 30 to operate, and the motor C34 drives the rotating shaft C31 to rotate through the gear C33 and the gear B32, and the rotating shaft C31 drives the crystal crushing disk A37 to rotate synchronously. If the rotating shaft C31 is rotated with a sleeve 39, the gear C33 drives the crystal crushing disk B41 to rotate in the opposite direction to the rotation of the crystal crushing disk A37 through the gear D40 and the sleeve 39.

[0046] Then, the crystallization liquid is poured into the crystallization cylinder 2 through the feed port 3 and at the same time, a coolant with a lower density is injected into the initial section of the feed pipe 28 through the cooling pipe 29. The coolant entering the crystallization liquid effectively and evenly cools the crystallization liquid in the feed pipe 28. The crystallization liquid is effectively cooled by the coolant to uniformly crystallize the grains.

[0047] When the crystal liquid containing crystal grains falls from the feed pipe 28 onto the crystal crushing mechanism 30, if there is only the crystal crushing disk A37 in the crystal crushing mechanism 30, the crystal crushing columns 38 evenly distributed on the crystal crushing disk A37 effectively crush the larger crystal grains in the crystal liquid falling thereon, thereby preventing the crystal grains in the crystal liquid from forming agglomerates. If there are only the crystal crushing disk A37 and the crystal crushing disk B41 in the crystal crushing mechanism 30, the crystal liquid coming out of the feed pipe 28 first falls on the crystal crushing disk B41 and then falls on the crystal crushing disk A37 through the mesh crystal crushing disk B41. Since there are evenly distributed crystal crushing columns 38 on the crystal crushing disk A37, the crystal crushing disk A37 and the crystal crushing disk B41 rotating in opposite directions effectively crush the crystal grains in the crystal liquid entering therebetween, thereby preventing the crystal grains in the crystal liquid from forming agglomerates.

[0048] After being reflected by the crystal crushing disk A37 or the crystal crushing disk B41 in the crystal crushing mechanism 30, the crystallization liquid falling on the crystal crushing disk A37 or the crystallization disk B splashes toward the inner wall of the shielding cover 43 and most of it falls on the middle position of the bottom of the crystallization cylinder 2 through the ring cylinder 26 below under the reflection of the shielding cover 43. The crystallization liquid in the middle position diffuses to the surroundings in a relatively gentle manner, thereby reducing the fluctuation of the crystallization liquid and effectively preventing the crystal grains in the crystallization liquid from colliding with each other to form larger agglomerates due to the violent shaking of the crystallization liquid.

[0049] As the liquid level in the crystallization cylinder 2 rises, the annular cylinder 26 can also effectively prevent the fluctuation of the liquid and effectively prevent the crystal grains in the crystallization liquid from colliding with each other to form larger agglomerates due to the violent shaking of the crystallization liquid.

[0050] As the crystallization liquid is injected into the crystallization cylinder 2, the number of crystal grains in the crystallization liquid in the crystallization cylinder 2 gradually increases, and the coolant with a lower oil density in the crystallization liquid entering the crystallization cylinder 2 floats on the surface of the crystallization liquid, and the crystal grains precipitated from the crystallization liquid settle to the bottom of the crystallization cylinder 2. A part of the precipitated crystal grains directly enters the precipitation tank 11, and the other part falls on the two inclined surfaces 4.

[0051] Due to the guiding effect of the guide plate 9 in the blowing groove 5 on the inclined surface 4, the air blown into the crystallization tube 2 from the blowing groove 5 moves along the inner wall of the inclined surface 4 through the arc surface A6 above the inner wall of the corresponding blowing groove 5 and the arc surface B7 below, so that the grains falling on the two inclined surfaces 4 will not adhere to the inner wall of the inclined surface 4 under the action of the air moving on the inclined surface 4, but move along the inclined surface 4 to the sedimentation tank 11, thereby reducing the workload of cleaning the inner wall of the crystallization tube 2.

[0052] When enough grains are precipitated in the sedimentation tank 11 and the sedimentation tank 11 is filled, start the motor A14 and start the motor B23 back and forth. The motor A14 drives the spiral blade 15 to rotate through the rotating shaft A13. The motor B23 drives the four gears A21 to rotate synchronously through the rotating shaft B22. The four gears A21 drive two groups of arc-shaped extrusion plates 16 that slide back and forth in the opposite directions around the rotating shaft A13 to move through the corresponding racks 18.

[0053] The spiral blade 15 moves the accumulated grains in the sedimentation tank 11 axially around the rotation axis A13 toward the discharge port 12. At the same time, the two groups of extrusion plates 16 reciprocate around the rotation axis A13, so that the axially moving grains in the spiral blade 15 interact with the two groups of staggered extrusion plates 16 in the axial direction. The grains in the spiral blade 15 are reciprocatedly extruded along the axial direction by the two groups of extrusion plates 16. The agglomerates formed by the extrusion carried by the spiral blade 15 in the precipitated grains are effectively squeezed and crushed by the two groups of extrusion plates 16, thereby ensuring that the grains carried by the spiral blade 15 do not block the discharge port 12 when they reach the discharge port 12, thereby improving the discharge efficiency of the precipitated grains and preventing the crystal particles in the spiral blade 15 from being squeezed into agglomerates and affecting the subsequent processes.

[0054] When the liquid level in the crystallization tube 2 reaches a certain height, the liquid that has been fully precipitated in the crystallization liquid is discharged through the drain pipe A24, and the discharge speed is equal to the feeding speed of the feed pipe 28. At the same time, the cooling liquid floating on the crystallization liquid is discharged through the drain pipe B25, and the discharge speed is equal to the speed of injecting cooling liquid into the crystallization liquid by the cooling pipe 29.

[0055] In summary, the beneficial effects of the present invention are as follows: the present invention uses the crystal crushing mechanism 30 at the end of the feed pipe 28 to effectively perform initial crushing on the crystal blocks in the crystallization liquid coming out of the feed pipe 28, and uses the extrusion plate 16 that reciprocates around the central axis of the spiral blade 15 at the bottom of the sedimentation tank 11 to reciprocately extrude the precipitated crystals moving along the axis of the spiral blade 15, so as to effectively crush the larger crystal blocks existing in the sedimentation tank 11, thereby preventing the crystal blocks from clogging the discharge port 12, and at the same time preventing the crystal particles in the spiral blade 15 from being squeezed into blocks to affect subsequent processes.

[0056] In the present invention, the shielding cover 43 and the ring cylinder 26 can drop the crystal liquid coming out of the feed pipe 28 from the middle of the crystallization cylinder 2 to prevent the crystal liquid from splashing toward the inner wall of the crystallization cylinder 2 to form grains attached, thereby reducing the workload of cleaning the inner wall of the crystallization cylinder 2.

[0057] The two contraction slopes 4 at the lower end of the crystallization tube 2 can effectively prevent the crystal grains in the crystallization liquid from adhering to the inner wall of the slope 4 in large quantities due to the cooperation of the guide plate 9 in the blowing groove 5 and the arc surface A6 of the inner wall of the slope 4 above the notch of the blowing groove 5 and the arc surface B7 of the inner wall of the slope 4 below the notch, so that the air entering the crystallization tube 2 from the blowing groove 5 can effectively prevent the crystal grains in the crystallization liquid from adhering to the inner wall of the slope 4 in large quantities, thereby reducing the amount of cleaning work caused by the attached crystal grains on the inner wall of the slope 4.

Claims

1. An anti-caking device for a cooling crystallization system, Features: It includes a bracket, a crystallization cylinder, a sedimentation tank, a motor A, a spiral sheet, an extrusion plate, a motor B, a feed pipe, a cooling pipe, and a crystal crushing mechanism. A spiral sheet is installed in a semicircular sedimentation tank with an inclined axis at the lower end of the crystallization cylinder, and is driven by the motor A to discharge sediment to a discharge port. A plurality of arc-shaped extrusion plates are distributed along the central axis of the spiral sheet and are matched with the spiral sheet under the unified drive of the motor B, and the movement directions of any two adjacent extrusion plates are opposite. The two symmetrical inclined surfaces at the lower end of the crystallization tube that guide the sediment into the sedimentation tank have a structure to prevent a large amount of sediment from adhering; a feed pipe connected to the feed port at the upper end of the crystallization tube is installed on the outer side of the crystallization tube, and a cooling pipe is installed on the feed pipe to uniformly spray a cooling liquid with a density lower than that of the crystallization liquid into the initial section thereof; a crystal crushing mechanism for crushing the falling crystal grain blocks is installed at the end of the feed pipe, and a structure is provided at the feed port and below the feed port to prevent the crystallization liquid from splashing to the wall of the crystallization tube to cause crystal adhesion by making the crystallization liquid fall from the middle of the crystallization tube and diffuse to the surroundings; The side wall of the crystallization cylinder has a structure for discharging the liquid inside it; The crystal crushing mechanism includes a rotating shaft C, a gear B, a gear C, a motor C, a ring sleeve, a crystal crushing plate A, a crystal crushing column, a sleeve, a gear D, and a crystal crushing plate B, wherein a vertical sleeve is rotatably matched in two ring sleeves installed in the end of the feed pipe through a fixed rod B, and a vertical rotating shaft C is rotatably matched in the sleeve; a gear D is installed at the upper end of the sleeve, and a gear B is installed at the upper end of the rotating shaft C; gears B and gear D are simultaneously engaged with gear C on the output shaft of the motor C at the top of the crystallization tube; a crystal crushing plate A is installed at the lower end of the rotating shaft C, and crystal crushing columns are evenly distributed on the inner wall of the crystal crushing plate A; a mesh crystal crushing plate B is installed at the lower end of the sleeve, which leaks liquid onto the crystal crushing plate A and grinds and crushes the grain blocks in the crystallization liquid in cooperation with the crystal crushing plate A, and the rotation directions of the crystal crushing plate A and the crystal crushing plate B are opposite.

2. The anti-caking device used in a cooling crystallization system according to claim 1, Features: The diameter and height of the crushed crystal column are 5 mm and 1 mm respectively; the gap width between any two adjacent crushed crystal columns on the inner wall of the crushed crystal plate A is 1 mm.

3. The anti-caking device used in a cooling crystallization system according to claim 1, Features: A shielding cover is installed at the feed inlet of the crystallization cylinder, which can gather the crystallization liquid that is scattered and splashed under the guidance of the crystal crushing disk A or the crystal crushing disk B back to the middle of the crystallization cylinder to prevent crystal grains from adhering to the inner wall of the crystallization cylinder; an annular cylinder is installed below the crystal crushing disk A or the crystal crushing disk B through a fixed rod A, which can guide the crystallization liquid gathered by the shielding cover to the middle of the crystallization cylinder and reduce the fluctuation of the crystallization liquid in the crystallization cylinder.

4. The anti-caking device used in a cooling crystallization system according to claim 1, Features: Blowing grooves connected to the air pump are evenly distributed on the inclined surface at the lower end of the crystallization tube, the inclined inner wall above the blowing groove has an inner concave arc surface A, and the inclined inner wall below the blowing groove has an outer convex arc surface B; each blowing groove is divided into several parts along its length direction by several grid plates, and each part is divided into two parts distributed upper and lower by a guide plate that guides air to the corresponding arc surface A and arc surface B to prevent grains from adhering to the inner wall of the inclined surface.

5. The anti-caking device used in a cooling crystallization system according to claim 1, Features: The spiral blade is installed on a rotating shaft A that rotates in the sedimentation tank, and the rotating shaft A is connected to the output shaft of the motor A on the outside of the crystallization cylinder; a rotating shaft B connected to the output shaft of the motor B is installed on the outside of the sedimentation tank; the extrusion plates with the same movement direction are connected by a synchronous frame, and the synchronous frame is equipped with two arc-shaped racks that mesh with the gear A on the rotating shaft B.

6. The anti-caking device used in a cooling crystallization system according to claim 1, Features: The side wall of the crystallization cylinder is provided with a drain pipe A for discharging crystallization liquid outward and a drain pipe B for discharging cooling liquid outward.

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