Spiral cooling crystallization equipment for titanium dioxide production

Abstract

The invention relates to spiral cooling crystallization equipment for titanium dioxide production in the field of cooling crystallization equipment, on one hand, through arrangement of a spiral baffle plate, a flow path of cooling water can be spiral, and compared with a vertical flow path, the duration of the cooling water in a cooling section shell is greatly prolonged; on the one hand, through the arrangement of the inclined material pressing unit, downward extrusion force can be generated on the black titanium liquid, stable and continuous feeding of the black titanium liquid into the heat exchange pipe is effectively assisted, the occurrence of pipe emptying conditions is reduced, and the utilization rate of the cooling water is further improved; and when the conditions that local feeding is discontinuous, interrupted and slowed down occur, the included angle between the inclined material pressing unit and the tube plate can be adaptively reduced, so that the extrusion direction of the inclined material pressing unit to the black titanium liquid tends to be vertically downward, the feeding speed of the black titanium liquid is increased, the empty tube phenomenon is reduced, and the utilization rate of cooling water is further increased.

Description

Technical Field

[0001] The invention relates to a spiral cooling crystallization device for titanium dioxide production, in particular to a spiral cooling crystallization device for titanium dioxide production applied in the field of cooling crystallization equipment. Background Art

[0002] Black titanium liquid is an important chemical raw material, widely used in titanium dioxide, titanium alloy, titanate and other fields. It is a special solution with special properties. For example, hydrolysis may occur when diluted or heated for a long time. In order to avoid hydrolysis, its concentration must be carried out by low-temperature evaporation concentration under vacuum. Cooling crystallization equipment is needed to cool down the black titanium liquid during the production process.

[0003] The specification of Chinese patent CN217961363U discloses a cooling crystallizer, through which the temperature of black titanium liquid can be rapidly reduced by continuously circulating the black titanium liquid in a cooling circulation zone, thereby achieving the effects of high crystallization efficiency and low crystallization cost. At the same time, the heat exchange between the refrigerant and the solution is sufficient, and the crystals crystallized have good particle size.

[0004] However, in the above patent, after the cooling water enters the circulation, its path is vertical, straight in and straight out, resulting in low water utilization rate. In addition, the black titanium liquid is a liquid with high viscosity and similar to paste, and its fluidity is poor. In order to ensure the cooling efficiency, the heat exchange tube is generally thinner, resulting in insufficient feeding when the black titanium liquid is fed into the heat exchange tube, and empty tubes are easily formed in the pipeline. It is not only easy to cause the circulating cooling water to be not fully utilized, further reducing the utilization rate of the circulating cooling water, but also easy to affect the cooling efficiency of the black titanium liquid. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the black titanium liquid itself has a high viscosity and is difficult to enter the heat exchange tube continuously and stably, which can easily lead to empty tubes of the heat exchange tube, affecting the cooling efficiency and the utilization rate of cooling water.

[0006] In order to solve the above problems, the present invention provides a spiral cooling crystallization device for titanium dioxide production, comprising a device housing and a pipe-pass component and a spiral baffle fixedly connected to the inside of the device housing, the device housing comprising a cooling section housing, a conical head fixedly connected to the lower end of the cooling section housing, and a feed section housing fixedly connected to the upper end of the cooling section housing, a feed port and an overflow port are fixedly connected to the outer end of the feed section housing, the feed port is close to the lower end of the feed section housing, the overflow port is close to the upper end of the feed section housing, and the lower end of the conical head is fixedly connected to the discharge port; The tube-side assembly and the spiral baffle are fixedly connected with the cooling section inner cylinder at the center, and the tube-side assembly and the spiral baffle are fixedly connected with the cooling section shell, the upper and lower ends of the cooling section inner cylinder extend to the feed section shell and the conical head respectively, and the bottom of the conical head is equipped with a stirring assembly through a bearing, and the stirring assembly rod body passes through the middle of the cooling section inner cylinder and extends to the outside of the feed section shell, the tube-side assembly includes two tube sheets and a plurality of evenly distributed heat exchange tubes fixedly connected between the two tube sheets, the ends of the heat exchange tubes are fixedly passed through the adjacent tube sheets and are flush with the tube sheet surfaces, the plurality of heat exchange tubes are fixedly passed through the spiral baffle, and the spiral baffle is located between the two tube sheets, the outer end of the cooling section shell is fixedly connected with an upper water inlet and an upper water outlet, the upper water outlet is located above the upper water inlet, and both are located between the two tube sheets; A secondary cooling unit is provided at the outer end of the conical head, and an oblique pressing unit is provided in the feed section shell. The oblique feeding unit includes a sleeve connected to the upper end of the inner cylinder of the cooling section through an electric swivel ring and two groups of oblique pressure plates fixedly connected to the outer end of the sleeve. The oblique pressure plate includes a horizontal plate, two upper electric push rods fixedly connected to the lower end of the horizontal plate, and a biased liquid pressure plate fixedly connected to the lower ends of the two upper electric push rods.

[0007] In the above-mentioned spiral cooling crystallization equipment for titanium dioxide production, on the one hand, through the setting of the spiral baffle, the flow path of the cooling water can be spiral, which greatly improves the flow path of the cooling water in the cooling section shell compared to the vertical shape, and is less likely to flow out quickly, thereby greatly improving the utilization rate of the cooling water. On the other hand, through the setting of the oblique pressing unit, a downward extrusion pressure can be generated on the black titanium liquid during rotation, effectively assisting the stable and continuous feeding of the black titanium liquid into the heat exchange tube, reducing the occurrence of empty tubes, and further improving the utilization rate of the cooling water.

[0008] As a further improvement of the present application, the collar is higher than the overflow port, and the biased liquid pressure plate is lower than the overflow port.

[0009] As a further improvement of the present application, the lower end of the conical head is a conical structure, and the secondary cooling unit includes a spiral coil wound on the outer surface of the conical head and a lower water outlet fixedly connected to the two ends of the spiral coil, respectively. The lower water inlet is located below the lower water outlet, and both are connected to the spiral coil. The spiral coil includes a vertical spiral tube with consistent radial spans of upper and lower circles and a conical spiral tube corresponding to the lower end of the conical head, and the cross-section of the spiral coil is semicircular.

[0010] As a further improvement of the present application, the deflected liquid pressure plate includes a liquid pushing plate and a liquid pressure plate located below the liquid pushing plate. The deflected liquid pressure plate is a broken line structure, with the upper half vertical and the lower half inclined. The angle between the lower half of the deflected liquid pressure plate and the vertical direction is 30-60°.

[0011] As a further improvement of the present application, the center line of the bottom of the liquid pressure plate is not perpendicular to the inner cylinder of the cooling section, the liquid pushing plate is perpendicular to the inner cylinder of the cooling section, and the edge of the bottom of the liquid pressure plate close to the side with an acute angle with the horizontal plane is rounded.

[0012] As a further improvement of the present application, the liquid pushing plate is fixedly connected to the liquid pressing plate. The liquid pressing plate has a three-layer structure. The three layers of the liquid pressing plate are fixedly connected to each other. The middle layer is made of rubber material, the layer close to the rounded corner is made of high-toughness plastic, and the other layer is a hard molded structure. A pressure sensor is installed at the end of the hard molded structure close to the middle layer.

[0013] As another improvement of the present application, the deflected liquid pressure plate also includes a variable angle strip connected between the liquid pushing plate and the liquid pressure plate, the variable angle strip is made of elastic rubber material, the oblique material pressing unit also includes a slope adjustment component, the slope adjustment component includes an adjustment unit installed at the outer end of the deflected liquid pressure plate away from the rounded corner and a laser rangefinder installed at the outer end of the ring, the laser rangefinder and the deflected liquid pressure plate are offset from each other.

[0014] As another improved supplement of the present application, the adjustment unit includes a back strip fixedly connected to the liquid pushing plate, an inner electric push rod rotatably installed between the lower end of the back strip and the liquid pressing plate, and an outer protective cover arranged on the outside of the inner electric push rod, the upper edge of the outer protective cover is fixedly connected to the lower end of the back strip, and the remaining edges of the outer protective cover are respectively fixed to the corresponding liquid pressing plate, variable angle strip and liquid pushing plate.

[0015] As another improved supplement of the present application, the outer shield is an elastic and high-temperature resistant sealing structure with a nano dustproof coating on the surface, and the outer shield is in a stretched state.

[0016] In summary, on the one hand, through the setting of the spiral baffle, the flow path of the cooling water can be made spiral, compared with the vertical shape, the time that the cooling water stays in the cooling section shell is greatly increased, so that the heat exchange of the black titanium liquid in the heat exchange tube is more sufficient, and the utilization rate of the cooling water is improved; on the other hand, through the setting of the oblique pressing unit, a downward extrusion force can be generated on the black titanium liquid, which effectively assists the stable and continuous feeding of the black titanium liquid into the heat exchange tube, reduces the occurrence of empty tubes, and further improves the utilization rate of the cooling water; and when the local feeding is discontinuous, interrupted, or other slowdowns occur, the angle between the oblique pressing unit and the tube sheet can be adaptively reduced, so that the extrusion direction of the black titanium liquid tends to be vertically downward, thereby accelerating the feeding speed of the black titanium liquid, reducing the empty tube phenomenon, and further improving the utilization rate of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application; Figure 2 A cross-sectional view of a first embodiment of the present application; Figure 3 This is a three-dimensional diagram of a conical head according to the first embodiment of the present application; Figure 4 A three-dimensional diagram of a tube-side assembly according to a first embodiment of the present application; Figure 5 A three-dimensional view of the inner part of the shell of the feed section of the first embodiment of the present application; Figure 6 A three-dimensional diagram of a biased liquid pressure plate according to a first embodiment of the present application; Figure 7 A cross-sectional view of the lower half of the biased liquid pressure plate of the first embodiment of the present application; Figure 8 This is a cross-sectional view of the shell portion of the feed section of the second embodiment of the present application; Fig. 9 A perspective view of a biased liquid pressure plate according to a second embodiment of the present application; Fig.10 This is a schematic diagram of the second embodiment of the present application when the feeding is normal and is biased toward the side of the liquid pressure plate; Fig.11 This is a schematic diagram of the second embodiment of the present application when the feeding slows down and deviates to the side of the liquid pressure plate; Description of the numbers in the figure: 11 cooling section shell, 12 conical head, 13 feed section shell, 14 cooling section inner tube, 21 feed port, 201 overflow port, 22 discharge port, 3 stirring assembly, 4 pipe pass assembly, 41 tube sheet, 42 heat exchange tube, 5 spiral baffle, 51 upper water inlet, 52 upper water outlet, 6 spiral coil, 61 lower water inlet, 62 lower water outlet, 71 collar, 72 cross plate, 73 deflection liquid pressure plate, 74 upper electric push rod, 731 liquid push plate, 732 liquid pressure plate, 701 variable angle strip, 702 pressure sensor, 81 back strip, 82 outer shield, 83 inner electric push rod, 9 laser rangefinder. DETAILED DESCRIPTION

[0018] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0019] The first implementation method: Figure 1-2 A spiral cooling crystallization device for titanium dioxide production is shown, comprising a device housing and a pipe-side component 4 and a spiral baffle 5 fixedly connected to the inside of the device housing. The device housing comprises a cooling section housing 11, a conical head 12 fixedly connected to the lower end of the cooling section housing 11, and a feed section housing 13 fixedly connected to the upper end of the cooling section housing 11. A feed port 21 and an overflow port 201 are fixedly connected to the outer end of the feed section housing 13. The feed port 21 is close to the lower end of the feed section housing 13, and the overflow port 201 is close to the upper end of the feed section housing 13. A discharge port 22 is fixedly connected to the lower end of the conical head 12. A cooling section inner cylinder 14 is fixedly connected to the center of the tube-side component 4 and the spiral baffle 5, and both the tube-side component 4 and the spiral baffle 5 are fixedly connected to the cooling section shell 11. The upper and lower ends of the cooling section inner cylinder 14 extend to the feed section shell 13 and the conical head 12 respectively. A stirring component 3 is installed at the bottom of the conical head 12 through a bearing. The stirring component 3 can be used to stir the black titanium liquid that has been cooled once, so that the internal and external temperatures of the black titanium liquid are evenly distributed after reaching the conical head 12, so that the secondary cooling effect at the conical head 12 is better. The rod of the stirring component 3 passes through the middle of the cooling section inner cylinder 14 and extends to the outside of the feed section shell 13. The stirring component 3 can be driven by an external motor.

[0020] like Figure 3 A secondary cooling unit is provided at the outer end of the conical head 12, and the lower end of the conical head 12 is a conical structure. The secondary cooling unit includes a spiral coil 6 wound on the outer surface of the conical head 12 and 611 and a lower water outlet 62 respectively fixedly connected to the two ends of the spiral coil 6. The lower water inlet 61 is located below the lower water outlet 62, and both are connected to the spiral coil 6. After the cooling water at the spiral baffle 5 is cooled once, the black titanium liquid reaches the conical head 12 and can be cooled for a second time through the spiral coil 6, thereby improving the cooling effect, effectively assisting the primary cooling, and ensuring the stable crystallization. The spiral coil 6 includes a vertical spiral tube with the same radial span of the upper and lower circles and a conical spiral tube corresponding to the lower end of the conical head 12. The cross-section of the spiral coil 6 is semicircular, so that its contact area with the surface of the conical head 12 is larger, and the cooling effect on the black titanium liquid inside it is better.

[0021] like Figure 4 The tube-pass component 4 includes two tube sheets 41 and a plurality of evenly distributed heat exchange tubes 42 fixedly connected between the two tube sheets 41. The ends of the heat exchange tubes 42 are fixedly passed through the adjacent tube sheets 41 and are flush with the surfaces of the tube sheets 41. The plurality of heat exchange tubes 42 are fixedly passed through the spiral baffle 5, and the spiral baffle 5 is located between the two tube sheets 41. An upper water inlet 51 and an upper water outlet 52 are fixedly connected to the outer end of the cooling section shell 11. The upper water outlet 52 is located above the upper water inlet 51, and both are located between the two tube sheets 41. The spiral baffle 5 can form a spiral flow channel in the cooling section shell 11. After the cooling water enters from the upper water inlet 51, it gradually flows upward along the spiral flow channel and is finally discharged from the upper water outlet 52. In this process, it fully contacts the outer walls of the plurality of heat exchange tubes 42 to realize heat exchange with the black titanium liquid. Compared with the straight up and down method of cooling water in the prior art, the flow path of the cooling water is effectively extended and the utilization rate of the cooling water is improved.

[0022] like Figure 5, an oblique pressing unit is provided in the feed section shell 13, which includes a sleeve ring 71 connected to the upper end of the cooling section inner cylinder 14 through an electric rotating ring and two sets of oblique pressing plates fixedly connected to the outer end of the sleeve ring 71, the oblique pressing plate includes a cross plate 72, two upper electric push rods 74 fixedly connected to the lower end of the cross plate 72, and a deflecting liquid pressing plate 73 fixedly connected to the lower ends of the two upper electric push rods 74. When feeding into the feed section shell 13 through the feed port 21, the black Taiye spreads in the feed section shell 13 and gradually enters the heat exchange tube 42 along the mouths of multiple heat exchange tubes 42. In this process, the deflecting liquid pressing plate 73 can be controlled to rotate by the electric rotating ring, thereby pushing and squeezing the black titanium liquid to assist it to enter the heat exchange tube 42 downward. Compared with the method of relying on gravity to fall by itself in the prior art, it effectively assists the stable and continuous feeding of the black titanium liquid into the heat exchange tube 42, reduces the occurrence of empty tubes, and further improves the utilization rate of cooling water.

[0023] The collar 71 is higher than the overflow port 201, the deflection liquid pressure plate 73 is lower than the overflow port 201, and the liquid level of the black titanium liquid is maintained between the upper end of the deflection liquid pressure plate 73 and the overflow port 201, so that when rotating, it is not easy for the black titanium liquid to gather significantly on one side of the deflection liquid pressure plate 73, and it is effectively avoided that the black titanium liquid levels on both sides are too different, thereby reducing the speed difference of the black titanium liquid entering the heat exchange tube 42 caused by this situation.

[0024] like Figure 6 The deflected liquid pressure plate 73 includes a liquid pushing plate 731 and a liquid pressure plate 732 located below the liquid pushing plate 731. The deflected liquid pressure plate 73 is a broken line structure, and the upper half is vertical and the lower half is inclined. The angle between the lower half of the deflected liquid pressure plate 73 and the vertical direction is 30-60°. In addition, it is worth noting that the rotation direction of the ring 71 is from the obtuse angle between the liquid pressure plate 732 and the horizontal plane to the acute angle side, so that when it rotates, the liquid pressure plate 732 not only has a circumferential driving force on the black titanium liquid, but also has an inclined downward squeezing force, thereby forcing the black titanium liquid downward into the heat exchange tube 42, realizing auxiliary feeding of the black titanium liquid and reducing the occurrence of empty tubes in the heat exchange tube 42.

[0025] The center line of the bottom of the liquid pressing plate 732 is not perpendicular to the inner cylinder 14 of the cooling section, the liquid pushing plate 731 is perpendicular to the inner cylinder 14 of the cooling section, and the edge of the bottom of the liquid pressing plate 732 close to the acute angle with the horizontal plane is rounded, so that the liquid pressing plate 732 is in a certain twisted state, so that it has a better effect on stirring the black titanium liquid.

[0026] like Figure 7The liquid pushing plate 731 is fixedly connected to the liquid pressing plate 732. The liquid pressing plate 732 is a three-layer structure. The three layers of the liquid pressing plate 732 are fixedly connected to each other. The middle layer is made of rubber material. The layer close to the rounded corner is made of high-toughness plastic. The other layer is a hard shaping structure. The end of the hard shaping structure close to the middle layer is equipped with a pressure sensor 702. During the rotation process, the setting of the middle layer of rubber material can make the liquid pressing plate 732 as a whole have a certain elasticity, so that it has a certain buffering force when the black titanium liquid is moved, and the setting of the pressure sensor 702 The force condition at the liquid pressure plate 732 can be monitored. When the rotation speed of the collar 71 is the same and the feeding speed at the feed port 21 is stable, if the material is unloaded slowly, more and more black titanium liquid will be gathered on the feed section shell 13, and more black titanium liquid will be moved toward the liquid pressure plate 73 during rotation. At this time, the data on the pressure sensor 702 will gradually increase. According to this situation, the rotation speed of the collar 71 can be controlled to be accelerated, thereby accelerating the entry of the black titanium liquid into the heat exchange tube 42, thereby ensuring the utilization rate of cooling water and the cooling efficiency during cooling.

[0027] In summary, on the one hand, through the setting of the spiral baffle 5, the flow path of the cooling water can be spiral, which greatly improves the flow path of the cooling water in the cooling section shell 11 compared to the vertical shape, and is less likely to flow out quickly, thereby greatly improving the utilization rate of the cooling water. On the other hand, through the setting of the oblique pressing unit, a downward extrusion pressure can be generated on the black titanium liquid during rotation, effectively assisting the stable and continuous feeding of the black titanium liquid into the heat exchange tube 42, reducing the occurrence of empty tubes, and further improving the utilization rate of the cooling water.

[0028] The second implementation method: Based on the first embodiment, this embodiment adds a slope adjustment component, and the rest of the parts are consistent with the first embodiment.

[0029] Figure 8-Figure 9As shown, the deflected liquid pressure plate 73 also includes an angled bar 701 connected between the liquid pushing plate 731 and the liquid pressing plate 732, and the angled bar 701 is made of elastic rubber material. The oblique material pressing unit also includes an inclination adjustment component, which includes an adjustment unit installed at the outer end of the deflected liquid pressure plate 73 away from the rounded corner and a laser rangefinder 9 installed at the outer end of the collar 71. The laser rangefinder 9 and the deflected liquid pressure plate 73 are mutually offset. The adjustment unit includes a back bar 81 fixedly connected to the liquid pushing plate 731, and a back bar 81 rotatably installed on the back bar 81. The inner electric push rod 83 between the lower end and the liquid pressure plate 732 and the outer shield 82 covering the outer side of the inner electric push rod 83, the upper edge of the outer shield 82 is fixedly connected to the lower end of the back strip 81, and the remaining edges of the outer shield 82 are respectively fixed to the corresponding liquid pressure plate 732, the variable angle strip 701 and the liquid push plate 731. The approximate liquid level of the black titanium liquid gathered on the feed section shell 13 can be effectively monitored by the laser rangefinder 9. When the liquid level is getting higher and higher, the data on the laser rangefinder 9 will become smaller and smaller, indicating that there may be a situation where the material feeding is slow, such as Figure 10-11 At this time, the inner electric push rod 83 can be controlled to shorten, and the angle bar 701 can be adaptively deformed to rotate the liquid pressing plate 732, so as to adjust the bending angle between the liquid pushing plate 731 and the liquid pressing plate 732, so that the acute angle between the liquid pressing plate 732 and the horizontal plane becomes smaller, and the electric push rod 74 is synchronously controlled to extend, so that the bottom of the liquid pressing plate 732 is released from the tube sheet 41, so that the direction of the extrusion force on the black titanium liquid tends to be vertical, so as to make the extrusion effect on the black titanium liquid better, speed up its feeding, make the feeding continuous and stable, and less likely to have empty tubes, which can not only ensure the cooling efficiency, but also effectively improve the utilization effect of cooling water.

[0030] The outer shield 82 is an elastic and high temperature resistant sealing structure with a nano dustproof coating on the surface, and the outer shield 82 is in a stretched state. The outer shield 82 is used to protect the inner electric push rod 83 so that it will not directly contact the black titanium liquid.

[0031] Through the inclination adjustment component, after monitoring the feeding situation of the black titanium liquid, when there is a local feeding discontinuity, interruption or other slowdown, the acute angle between the inclined pressing unit and the tube sheet can be adaptively reduced, so that the extrusion direction of the black titanium liquid tends to be vertically downward, thereby effectively eliminating the abnormalities of feeding discontinuity, interruption and other slowdowns, and then greatly accelerating the feeding speed of the black titanium liquid. Compared with the existing technology, the efficiency of the cooling crystallization of the black titanium liquid is further improved.

[0032] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A spiral cooling crystallization equipment for titanium dioxide production, characterized in that: The device comprises an equipment casing and a tube-side component (4) and a spiral baffle (5) fixedly connected to the inside of the equipment casing, wherein the equipment casing comprises a cooling section casing (11), a conical head (12) fixedly connected to the lower end of the cooling section casing (11), and a feed section casing (13) fixedly connected to the upper end of the cooling section casing (11); a feed port (21) and an overflow port (201) are fixedly connected to the outer end of the feed section casing (13); the feed port (21) is close to the lower end of the feed section casing (13), the overflow port (201) is close to the upper end of the feed section casing (13), and a discharge port (22) is fixedly connected to the lower end of the conical head (12); The tube-side assembly (4) and the spiral baffle (5) are fixedly connected to a cooling section inner cylinder (14) at the center thereof, and the tube-side assembly (4) and the spiral baffle (5) are fixedly connected to a cooling section shell (11); the upper and lower ends of the cooling section inner cylinder (14) extend into the feed section shell (13) and the conical end cap (12) respectively; a stirring assembly (3) is mounted on the bottom of the conical end cap (12) via a bearing; a rod of the stirring assembly (3) passes through the middle of the cooling section inner cylinder (14) and extends to the outside of the feed section shell (13); the tube-side assembly (4) comprises two tube sheets (41 ) and a plurality of evenly distributed heat exchange tubes (42) fixedly connected between the two tube sheets (41), the ends of the heat exchange tubes (42) fixedly penetrate the adjacent tube sheets (41) and are flush with the surfaces of the tube sheets (41), the plurality of heat exchange tubes (42) fixedly penetrate the spiral baffles (5), and the spiral baffles (5) are located between the two tube sheets (41), the outer end of the cooling section shell (11) is fixedly connected with an upper water inlet (51) and an upper water outlet (52), the upper water outlet (52) is located above the upper water inlet (51), and both are located between the two tube sheets (41); A secondary cooling unit is provided at the outer end of the conical head (12), and an oblique material pressing unit is provided in the feed section housing (13). The oblique material feeding unit comprises a sleeve ring (71) connected to the upper end of the cooling section inner cylinder (14) via an electric rotating ring, and two groups of oblique pressure plates fixedly connected to the outer end of the sleeve ring (71). The oblique pressure plates comprise a transverse plate (72), two upper electric push rods (74) fixedly connected to the lower end of the transverse plate (72), and a biased liquid pressure plate (73) fixedly connected to the lower ends of the two upper electric push rods (74).

2. The spiral cooling crystallization equipment for titanium dioxide production according to claim 1, characterized in that: The collar (71) is higher than the overflow port (201), and the deflecting liquid-pressing plate (73) is lower than the overflow port (201).

3. The spiral cooling crystallization equipment for titanium dioxide production according to claim 1, characterized in that: The lower end of the conical head (12) is a conical structure. The secondary cooling unit comprises a spiral coil (6) wound on the outer surface of the conical head (12) and a lower water outlet (62) respectively fixedly connected to the two ends of the spiral coil (6). The lower water inlet (61) is located below the lower water outlet (62), and both are connected to the spiral coil (6). The spiral coil (6) comprises a vertical spiral tube with the same radial span of the upper and lower circles and a conical spiral tube corresponding to the lower end of the conical head (12). The cross-section of the spiral coil (6) is semicircular.

4. The spiral cooling crystallization equipment for titanium dioxide production according to claim 1, characterized in that: The deflected liquid pressure plate (73) comprises a liquid pushing plate (731) and a liquid pressing plate (732) located below the liquid pushing plate (731); the deflected liquid pressure plate (73) is a broken line structure, with an upper half vertical and a lower half inclined; the angle between the lower half of the deflected liquid pressure plate (73) and the vertical direction is 30-60 degrees.

5. The spiral cooling crystallization equipment for titanium dioxide production according to claim 4, characterized in that: The center line of the bottom of the liquid pressing plate (732) is not perpendicular to the cooling section inner cylinder (14), the liquid pushing plate (731) is perpendicular to the cooling section inner cylinder (14), and the bottom of the liquid pressing plate (732) is rounded at an edge close to the side where the angle with the horizontal plane is acute.

6. The spiral cooling crystallization equipment for titanium dioxide production according to claim 5, characterized in that: The liquid pushing plate (731) is fixedly connected to the liquid pressing plate (732); the liquid pressing plate (732) is a three-layer structure; the three layers of the liquid pressing plate (732) are fixedly connected to each other; the middle layer is made of rubber material; the layer close to the rounded corner is made of high-toughness plastic; the other layer is a hard shaped structure; and a pressure sensor (702) is installed at the end of the hard shaped structure close to the middle layer.

7. The spiral cooling crystallization equipment for titanium dioxide production according to claim 5, characterized in that: The deflected liquid pressure plate (73) further comprises an angle-changing strip (701) connected between the liquid pushing plate (731) and the liquid pressure plate (732), wherein the angle-changing strip (701) is made of an elastic rubber material. The oblique material pressing unit further comprises an inclination adjustment component, wherein the inclination adjustment component comprises an adjustment unit mounted on the outer end of the deflected liquid pressure plate (73) away from the rounded corner and a laser rangefinder (9) mounted on the outer end of the collar (71), wherein the laser rangefinder (9) and the deflected liquid pressure plate (73) are offset from each other.

8. The spiral cooling crystallization equipment for titanium dioxide production according to claim 7, characterized in that: The adjustment unit comprises a back bar (81) fixedly connected to a liquid pushing plate (731), an inner electric push rod (83) rotatably mounted between the lower end of the back bar (81) and the liquid pressing plate (732), and an outer protective cover (82) arranged on the outer side of the inner electric push rod (83), wherein the upper edge of the outer protective cover (82) is fixedly connected to the lower end of the back bar (81), and the remaining edges of the outer protective cover (82) are respectively fixed to the corresponding liquid pressing plate (732), the variable angle bar (701) and the liquid pushing plate (731).

9. The spiral cooling crystallization equipment for titanium dioxide production according to claim 8, characterized in that: The outer protective cover (82) is an elastic and high temperature resistant sealing structure with a nano dustproof coating coated on the surface, and the outer protective cover (82) is in a stretched state.

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