Spiral cooling and crystallizing device for titanium dioxide production

Abstract

The present application relates to a spiral cooling crystallization equipment for titanium dioxide production, which is applied to the field of cooling crystallization equipment. On the one hand, the spiral baffle is arranged to make the flow path of the cooling water spiral, which greatly improves the time length of the cooling water in the cooling section shell compared with the vertical shape, makes the heat exchange of the black titanium liquid in the heat exchange pipe more sufficient, and improves the utilization rate of the cooling water. On the other hand, the oblique material pressing unit is arranged to generate downward extrusion force on the black titanium liquid, effectively assisting the stable and continuous feeding of the black titanium liquid into the heat exchange pipe, reducing the occurrence of empty pipe condition, and further improving the utilization rate of the cooling water. When the feeding is discontinuous, interrupted or slowed down, the included angle between the oblique material pressing unit and the tube plate can be adaptively reduced, so that the extrusion direction of the black titanium liquid tends to be vertical downward, thereby speeding up the feeding speed of the black titanium liquid, reducing the empty pipe phenomenon, and further improving the utilization rate of the cooling water.

Description

TECHNICAL FIELD

[0001] The application relates to a spiral cooling crystallization device for titanium dioxide production, in particular to a spiral cooling crystallization device for titanium dioxide production. BACKGROUND

[0002] Black titanium liquid is an important chemical raw material, which is widely used in the fields of titanium dioxide, titanium alloy, titanate and the like. The black titanium liquid is a special solution and has special properties. For example, the black titanium liquid may be hydrolyzed when being diluted or heated for a long time. In order to avoid the hydrolysis, the concentration of the black titanium liquid must be evaporated and concentrated at low temperature under vacuum. The black titanium liquid needs to be cooled and crystallized by using a cooling crystallization device during the production process.

[0003] The cooling crystallizer disclosed in the specification of the Chinese patent CN217961363U can quickly reduce the temperature of the black titanium liquid by continuously circulating the black titanium liquid in the cooling circulation zone, realizes high crystallization efficiency and low crystallization cost, and the heat exchange between the refrigerant and the solution is sufficient, and the crystalline particle size is good.

[0004] However, in the above-mentioned patent, the path of the cooling water after entering the circulation is vertical and straight in and straight out, which leads to low utilization rate of the water. Moreover, the black titanium liquid is a liquid with high viscosity and similar paste, and the flowability is poor. In order to ensure the cooling efficiency, the heat exchange pipe is generally thin, so that when the black titanium liquid is fed into the heat exchange pipe, the feeding is only by the falling of the natural gravity, which is easy to cause insufficient feeding, and the empty pipe in the pipe is easy to appear, which not only leads to insufficient utilization of the circulating cooling water, further reduces the utilization rate of the circulating cooling water, but also easily affects the cooling efficiency of the black titanium liquid. SUMMARY

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the application is that the black titanium liquid has high viscosity and is difficult to continuously and stably enter the heat exchange pipe, which easily leads to empty pipe of the heat exchange pipe and affects the cooling efficiency and the utilization rate of the cooling water.

[0006] To solve the above-mentioned problems, the application provides a spiral cooling crystallization device for titanium dioxide production, which comprises a device shell, a tube group assembly and a spiral baffle fixedly connected in the device shell, the device shell comprises a cooling section shell, a conical head fixedly connected to the lower end of the cooling section shell and a feeding section shell fixedly connected to the upper end of the cooling section shell, a feeding port and an overflow port are fixedly connected to the outer end of the feeding section shell, the feeding port is close to the lower end of the feeding section shell, the overflow port is close to the upper end of the feeding section shell, and a discharge port is fixedly connected to the lower end of the conical head.

[0007] The cooling section inner cylinder is fixedly connected with the tube side assembly and the helical baffle, and the cooling section inner cylinder and the helical baffle are fixedly connected with the cooling section shell, the upper end and the lower end of the cooling section inner cylinder extend into the feed section shell and the conical head respectively, the stirring assembly is mounted on the bottom of the conical head through a bearing, the rod of the stirring assembly penetrates through the middle part of the cooling section inner cylinder and extends out of the feed section shell, the tube side assembly comprises two tube sheets and a plurality of uniformly distributed heat exchange tubes fixedly connected between the two tube sheets, the end of the heat exchange tube is fixedly penetrated through the adjacent tube sheet and flush with the surface of the tube sheet, the plurality of heat exchange tubes are fixedly penetrated through the helical baffle, and the helical baffle is located between the two tube sheets, the upper water inlet and the upper water outlet are fixedly connected with the outer end of the cooling section shell, the upper water outlet is located above the upper water inlet, and both are located between the two tube sheets;

[0008] The conical head is provided with a secondary cooling unit, and the feed section shell is provided with an inclined pressing unit, the inclined pressing unit comprises a sleeve ring connected with the upper end of the cooling section inner cylinder through an electric swivel and two groups of inclined pressing plates fixedly connected with the outer end of the sleeve ring, the inclined pressing plate comprises a horizontal plate, two upper electric push rods fixedly connected with the lower end of the horizontal plate, and a bias pressing plate fixedly connected with the lower end of the two upper electric push rods.

[0009] In the above-mentioned spiral cooling and crystallization device for titanium dioxide production, on the one hand, the spiral flow path of the cooling water is formed by the helical baffle, which greatly improves the flow path of the cooling water in the cooling section shell compared to the vertical state, and is not prone to rapid outflow, thereby greatly improving the utilization rate of the cooling water, on the other hand, the inclined pressing unit can generate a downward extrusion force 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 tube condition, and further improving the utilization rate of the cooling water.

[0010] As a further improvement of the present application, the sleeve ring is higher than the overflow port, and the bias pressing plate is lower than the overflow port.

[0011] As a further improvement of the present application, the lower end of the conical head is a conical structure, the secondary cooling unit comprises a spiral coil pipe wound on the outer surface of the conical head, and a lower water inlet and a lower water outlet fixedly connected with the two ends of the spiral coil pipe respectively, the lower water inlet is located below the lower water outlet, and both communicate with the spiral coil pipe, the spiral coil pipe comprises a vertical spiral pipe with consistent radial span and a conical spiral pipe corresponding to the lower end of the conical head, and the cross section of the spiral coil pipe is semicircular.

[0012] As a further improvement of the present application, the bias pressing plate comprises a liquid pushing plate and a liquid pressing plate located below the liquid pushing plate, the bias pressing plate is a broken line structure, and the upper half is vertical and the lower half is inclined, the included angle between the lower half of the bias pressing plate and the vertical direction is 30-60°.

[0013] As a further improvement of the present application, the middle line of the bottom of the liquid pressing 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 bottom of the liquid pressing plate is provided with a rounded edge close to the side with an acute angle with the horizontal plane.

[0014] As a further improvement of the present application, the liquid pushing plate is fixedly connected with the liquid pressing plate, the liquid pressing plate has a three-layer structure, the three layers of the liquid pressing plate are fixedly connected with each other, the middle layer is made of rubber material, one layer close to the rounded side is made of high-toughness plastic, and the other layer is a hard and fixed structure, and the hard and fixed structure is provided with a pressure sensor close to the end of the middle layer.

[0015] As a further improvement of the present application, the liquid pushing plate is fixedly connected with the liquid pressing plate, the liquid pressing plate has a three-layer structure, the three layers of the liquid pressing plate are fixedly connected with each other, the middle layer is made of rubber material, one layer close to the rounded side is made of high-toughness plastic, and the other layer is a hard and fixed structure, and the hard and fixed structure is provided with a pressure sensor close to the end of the middle layer.

[0016] As a further improvement of the present application, the liquid pushing plate is fixedly connected with the liquid pressing plate, the liquid pressing plate has a three-layer structure, the three layers of the liquid pressing plate are fixedly connected with each other, the middle layer is made of rubber material, one layer close to the rounded side is made of high-toughness plastic, and the other layer is a hard and fixed structure, and the hard and fixed structure is provided with a pressure sensor close to the end of the middle layer.

[0017] As a further improvement of the present application, the liquid pushing plate is fixedly connected with the liquid pressing plate, the liquid pressing plate has a three-layer structure, the three layers of the liquid pressing plate are fixedly connected with each other, the middle layer is made of rubber material, one layer close to the rounded side is made of high-toughness plastic, and the other layer is a hard and fixed structure, and the hard and fixed structure is provided with a pressure sensor close to the end of the middle layer.

[0018] In summary, on the one hand, through the arrangement of the spiral baffle, the flow path of the cooling water is spiral-shaped, which greatly increases the time of the cooling water in the cooling section shell compared to the vertical shape, makes the heat exchange of the black titanium liquid in the heat exchange pipe more sufficient, and improves the utilization rate of the cooling water. On the other hand, through the arrangement of the inclined pressing material unit, the black titanium liquid can be subjected to downward extrusion force, effectively assisting the stable and continuous feeding of the black titanium liquid into the heat exchange pipe, reducing the occurrence of empty pipe condition, and further improving the utilization rate of the cooling water. When there is a slow condition of local feeding discontinuity or interruption, the included angle between the inclined pressing material unit and the tube plate can be adaptively reduced, so that the extrusion direction of the black titanium liquid tends to be perpendicular downward, thereby speeding up the feeding speed of the black titanium liquid, reducing the empty pipe phenomenon, and further improving the utilization rate of the cooling water. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the first embodiment of the present application;

[0020] Figure 2 It is a sectional view of the first embodiment of the present application;

[0021] Figure 3 A perspective view of the conical head of the first embodiment of the present application;

[0022] Figure 4 A perspective view of the tube bundle assembly of the first embodiment of the present application;

[0023] Figure 5 A perspective view of the inner portion of the feed section shell of the first embodiment of the present application;

[0024] Figure 6 A perspective view of the deflection liquid pressure plate of the first embodiment of the present application;

[0025] Figure 7 A sectional view of the lower half of the deflection liquid pressure plate of the first embodiment of the present application;

[0026] Figure 8 A sectional view of the feed section shell portion of the second embodiment of the present application;

[0027] Figure 9 A perspective view of the deflection liquid pressure plate of the second embodiment of the present application;

[0028] Figure 10 A side view of the deflection liquid pressure plate of the second embodiment of the present application when the feed is normal;

[0029] Figure 11 A side view of the deflection liquid pressure plate of the second embodiment of the present application when the feed is slow;

[0030] Explanation of reference numerals in the drawings:

[0031] 11 cooling section shell, 12 conical head, 13 feed section shell, 14 cooling section inner cylinder, 21 feed inlet, 201 overflow outlet, 22 discharge outlet, 3 stirring assembly, 4 tube bundle assembly, 41 tube plate, 42 heat exchange tube, 5 helical baffle, 51 upper water inlet, 52 upper water outlet, 6 helical coil, 61 lower water inlet, 62 lower water outlet, 71 sleeve ring, 72 transverse plate, 73 deflection liquid pressure plate, 74 upper electric push rod, 731 liquid pushing plate, 732 liquid pressure plate, 701 variable angle strip, 702 pressure sensor, 81 back strip, 82 outer protective cover, 83 inner electric push rod, 9 laser range finder. DETAILED DESCRIPTION

[0032] The two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] First embodiment:

[0034] Figures 1-2The utility model discloses a spiral cooling crystallization equipment for titanium dioxide production, including equipment shell and fixedly connected pipe course subassembly 4 and helical baffle 5 in the inside of equipment shell, and the equipment shell includes cooling section shell body 11, the taper head 12 of fixedly connected in the lower end of cooling section shell body 11 and the feed section shell body 13 of fixedly connected in the upper end of cooling section shell body 11, and the outer end of feed section shell body 13 is fixedly connected with feed inlet 21 and overflow port 201, and the feed inlet 21 is close to the lower end of feed section shell body 13, and the overflow port 201 is close to the upper end of feed section shell body 13, and the lower end of taper head 12 is fixedly connected with discharge port 22;

[0035] The utility model discloses a spiral cooling crystallization equipment for titanium dioxide production, including equipment shell and fixedly connected pipe course subassembly 4 and helical baffle 5 in the inside of equipment shell, and the equipment shell includes cooling section shell body 11, the taper head 12 of fixedly connected in the lower end of cooling section shell body 11 and the feed section shell body 13 of fixedly connected in the upper end of cooling section shell body 11, and the outer end of feed section shell body 13 is fixedly connected with feed inlet 21 and overflow port 201, and the feed inlet 21 is close to the lower end of feed section shell body 13, and the overflow port 201 is close to the upper end of feed section shell body 13, and the lower end of taper head 12 is fixedly connected with discharge port 22;

[0036] As Figure 3 The utility model discloses a spiral cooling crystallization equipment for titanium dioxide production, including equipment shell and fixedly connected pipe course subassembly 4 and helical baffle 5 in the inside of equipment shell, and the equipment shell includes cooling section shell body 11, the taper head 12 of fixedly connected in the lower end of cooling section shell body 11 and the feed section shell body 13 of fixedly connected in the upper end of cooling section shell body 11, and the outer end of feed section shell body 13 is fixedly connected with feed inlet 21 and overflow port 201, and the feed inlet 21 is close to the lower end of feed section shell body 13, and the overflow port 201 is close to the upper end of feed section shell body 13, and the lower end of taper head 12 is fixedly connected with discharge port 22;

[0037] As Figure 4The pipe group assembly 4 comprises two tube plates 41 and a plurality of uniformly distributed heat exchange pipes 42 fixedly connected between the two tube plates 41, the end of the heat exchange pipe 42 is fixedly penetrated through the adjacent tube plate 41 and flush with the surface of the tube plate 41, the plurality of heat exchange pipes 42 are all fixedly penetrated through the spiral baffle 5, and the spiral baffle 5 is located between the two tube plates 41, the upper water inlet 51 and the 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 plates 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 moves upward along the spiral flow channel and is finally discharged from the upper water outlet 52, in this process, it fully contacts the outer wall of the plurality of heat exchange pipes 42 to realize heat exchange of the black titanium liquid, compared with the straight-up and straight-down mode of the cooling water in the prior art, the flow path of the cooling water is effectively prolonged, and the utilization rate of the cooling water is improved.

[0038] As Figure 5 The feeding section shell 13 is provided with a diagonal pressing unit, the diagonal pressing unit comprises a sleeve ring 71 connected to the upper end of the cooling section inner cylinder 14 through an electric swivel and two groups of diagonal pressing plates fixedly connected to the outer end of the sleeve ring 71, the diagonal pressing plate comprises a horizontal plate 72, two upper electric push rods 74 fixedly connected to the lower end of the horizontal plate 72 and a bias liquid pressing plate 73 fixedly connected to the lower end of the two upper electric push rods 74, when feeding into the feeding section shell 13 through the feeding port 21, the black titanium liquid spreads in the feeding section shell 13 and gradually enters into the heat exchange pipe 42 along the mouth of the plurality of heat exchange pipes 42, in this process, the bias liquid pressing plate 73 can be controlled to rotate through the electric swivel, thereby pushing and extruding the black titanium liquid to assist it to enter into the heat exchange pipe 42, compared with the mode of relying on gravity to fall in the prior art, the stable and continuous feeding of the black titanium liquid into the heat exchange pipe 42 is effectively assisted, the occurrence of empty pipe is reduced, and the utilization rate of the cooling water is further improved.

[0039] The sleeve ring 71 is higher than the overflow port 201, the bias liquid pressing 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 bias liquid pressing plate 73 and the overflow port 201, so that the black titanium liquid is not easy to gather on one side of the bias liquid pressing plate 73 when rotating, the case that the liquid level difference of the black titanium liquid on both sides is too large is effectively avoided, and the speed difference of the black titanium liquid entering into the heat exchange pipe 42 caused by this case is reduced.

[0040] As Figure 6, the deflection pressure liquid plate 73 includes a pushing liquid plate 731 and a pressure liquid plate 732 below the pushing liquid plate 731, the deflection pressure liquid plate 73 is a fold line structure, and the upper half is vertical and the lower half is inclined, the included angle between the lower half of the deflection pressure liquid plate 73 and the vertical direction is 30-60°, in addition, it is worth noting that the rotation direction of the sleeve ring 71 is from the obtuse angle between the pressure liquid plate 732 and the horizontal plane to the acute angle side, so that when it rotates, the pressure liquid plate 732 not only has a pushing force along the circumferential direction on the black titanium liquid, but also has an inclined downward extrusion force, thereby pressing the black titanium liquid downward into the heat exchange pipe 42, realizing auxiliary feeding of the black titanium liquid, and reducing the occurrence of empty pipe of the heat exchange pipe 42.

[0041] The middle line of the bottom of the pressure liquid plate 732 is not perpendicular to the cooling section inner cylinder 14, the pushing liquid plate 731 is perpendicular to the cooling section inner cylinder 14, and the edge of the bottom of the pressure liquid plate 732 close to the side with an acute angle with the horizontal plane is rounded, so that the pressure liquid plate 732 is in a certain torsion state, and the stirring effect of the black titanium liquid is better.

[0042] As shown in Figure 7 , the pushing liquid plate 731 is fixedly connected with the pressure liquid plate 732, the pressure liquid plate 732 is a three-layer structure, the three layers of the pressure liquid plate 732 are fixedly connected with each other, the middle layer is made of rubber material, one layer close to the rounded side is made of high-toughness plastic, and the other layer is a hard-shaped structure, and the hard-shaped structure is provided with a pressure sensor 702 close to the end of the middle layer. During rotation, the setting of the middle layer of rubber material can make the pressure liquid plate 732 as a whole have a certain elasticity, so that the black titanium liquid has a certain buffer force when it is stirred, and the setting of the pressure sensor 702 can monitor the stress condition of the pressure liquid plate 732. When the same speed of the sleeve ring 71 and the stable feeding speed of the feeding port 21, if the feeding speed becomes slower, the black titanium liquid gathered on the feeding section shell 13 will become more and more, so that the black titanium liquid stirred by the deflection pressure liquid plate 73 during rotation will become more and more, at this time, the data on the pressure sensor 702 will gradually increase, according to this condition, the speed of the sleeve ring 71 can be controlled to increase, so as to speed up the black titanium liquid into the heat exchange pipe 42, thereby ensuring the utilization rate and cooling efficiency of the cooling water.

[0043] 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 with the vertical shape, so that the cooling water is not easy to flow out quickly, thereby greatly improving the utilization rate of the cooling water, on the other hand, through the setting of the inclined pressure material unit, the black titanium liquid can be extruded downward during rotation, effectively assisting the stable and continuous feeding of the black titanium liquid into the heat exchange pipe 42, reducing the occurrence of empty pipe, and further improving the utilization rate of the cooling water.

[0044] The second embodiment is as follows:

[0045] The present embodiment is based on the first embodiment, and a new slope adjustment assembly is added, and the remaining parts remain consistent with the first embodiment.

[0046] Figures 8-9 It is shown that the biasing pressure liquid plate 73 also includes a variable angle strip 701 connected between the pushing liquid plate 731 and the pressure liquid plate 732, the variable angle strip 701 is made of elastic rubber material, and the oblique pressing material unit also includes a slope adjustment assembly, the slope adjustment assembly includes an adjustment unit installed on the outer end of the biasing pressure liquid plate 73 away from the rounded corner side and a laser range finder 9 installed on the outer end of the sleeve ring 71, the laser range finder 9 is mutually offset with the biasing pressure liquid plate 73, the adjustment unit includes a back strip 81 fixedly connected to the pushing liquid plate 731, an inner electric push rod 83 rotatably installed between the lower end of the back strip 81 and the pressure liquid plate 732, and an outer protective cover 82 covering the outer side of the inner electric push rod 83, the upper end edge of the outer protective cover 82 is fixedly connected with the lower end of the back strip 81, and the remaining edges of the outer protective cover 82 are fixedly connected with the corresponding pressure liquid plate 732, variable angle strip 701 and pushing liquid plate 731 respectively. The laser range finder 9 can effectively monitor the approximate height of the black titanium liquid accumulated on the feed section housing 13, when the liquid level is higher and higher, the data on the laser range finder 9 will be smaller and smaller, indicating that there may be a situation of slow feeding, such as Figures 10-11 At this time, the inner electric push rod 83 can be controlled to be shortened, the variable angle strip 701 is adaptively deformed, the pressure liquid plate 732 is rotated, the bending angle between the pushing liquid plate 731 and the pressure liquid plate 732 is adjusted, the acute angle between the pressure liquid plate 732 and the horizontal plane is reduced, the electric push rod 74 is synchronously controlled to be elongated, the bottom of the pressure liquid plate 732 is separated from the tube plate 41, and then the direction of the extrusion force of the pressure liquid plate 732 on the black titanium liquid tends to be vertical, and then the extrusion effect on the black titanium liquid is better, the feeding of the black titanium liquid is accelerated, the feeding is continuous and stable, and the empty pipe situation is not easy to occur, which can not only ensure the cooling efficiency, but also effectively improve the utilization effect of the cooling water.

[0047] The outer protective cover 82 is a sealing structure with elastic high-temperature resistance and a nano dustproof coating on the surface, and the outer protective cover 82 is in a straightened state. The outer protective cover 82 is used to protect the inner electric push rod 83 inside, so that it will not directly contact with the black titanium liquid.

[0048] Through the slope adjustment assembly, when the local feeding is not continuous, interrupted or slow, the acute angle between the oblique pressing material unit and the tube plate can be adaptively reduced, and then the extrusion direction of the oblique pressing material unit on the black titanium liquid tends to be vertical downward, so that the abnormality of the non-continuous, interrupted or slow feeding is effectively eliminated, and then the feeding speed of the black titanium liquid is greatly accelerated. Compared with the prior art, the efficiency of cooling and crystallization of the black titanium liquid is further improved.

[0049] The above-mentioned embodiments of the present application are combined with the current actual demand, the protection scope is not limited to this, various changes made within the knowledge range of the person skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A spiral cooling crystallization equipment for titanium dioxide production, characterized by: The invention comprises an equipment housing and a pipe-side assembly (4) and a spiral baffle (5) fixedly connected to the interior of the equipment housing, wherein the equipment 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), wherein the outer end of the feed section housing (13) is fixedly connected to a feed port (21) and an overflow port (201), wherein 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), and the lower end of the conical head (12) is fixedly connected to a discharge port (22); The center of the tube-side assembly (4) and the spiral baffle (5) is fixedly connected to the cooling section inner cylinder (14), and the tube-side assembly (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 into the feed section shell (13) and the conical head (12), respectively. The bottom of the conical head (12) is equipped with a stirring assembly (3) through a bearing. The 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) 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) fixedly pass through the adjacent tube sheets (41) and are flush with the surface 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), 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 pressing unit is provided in the feed section shell (13). The oblique pressing unit includes a sleeve (71) connected to the upper end of the cooling section inner cylinder (14) through an electric rotating ring and two groups of oblique pressing plates fixedly connected to the outer end of the sleeve (71). The oblique pressing plate includes a transverse plate (72), two upper electric push rods (74) fixedly connected to the lower end of the transverse plate (72), and a deflected liquid pressure plate (73) fixedly connected to the lower ends of the two upper electric push rods (74). 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, with the upper half vertical and the lower half inclined. The angle between the lower half of the deflected liquid pressure plate (73) and the vertical direction is 30-60 degrees.

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 pressure 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 inlet (61) 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 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 bottom of the liquid pressing plate (732) is rounded at an edge close to the side with an acute angle to the horizontal plane.

5. The spiral cooling crystallization equipment for titanium dioxide production according to claim 4, 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, and the other layer is a hard shaped structure. A pressure sensor (702) is installed at the end of the hard shaped structure close to the middle layer.

6. The spiral cooling crystallization equipment for titanium dioxide production according to claim 4, characterized in that: The deflected liquid pressure plate (73) further includes 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 includes an inclination adjustment component, wherein the inclination adjustment component includes 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 displaced from each other.

7. The spiral cooling crystallization equipment for titanium dioxide production according to claim 6, characterized in that: The adjustment unit comprises a back bar (81) fixedly connected to the 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).

8. The spiral cooling crystallization equipment for titanium dioxide production according to claim 7, characterized in that: The outer shield (82) is an elastic, high-temperature-resistant sealing structure with a nano-dustproof coating on its surface, and the outer shield (82) is in a stretched state.

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