Vacuum crystallizer defoaming device for titanium dioxide

Abstract

The utility model discloses a defoaming device of a vacuum crystallizer for titanium dioxide, and relates to the technical field of titanium dioxide processing. The crystallizer comprises a crystallizer body, the top of the crystallizer body is fixedly connected with a demister, and one side of the top of the demister is communicated with an exhaust pipe; a defoaming assembly is arranged in an inner cavity of the demister and comprises a backflow plate, and the backflow plate is fixedly connected to the inner bottom of the demister. The motor driving system can effectively drive the rotating rod at one end of the first worm to rotate, so that the crushing pieces on the surface of the rotating disc actively crush and defoam foams, the rotating crushing pieces are utilized to physically crush the foams, elimination of the foams is promoted, and meanwhile, the service life of the foams is prolonged. And redundant foams are subjected to secondary defoaming treatment through the defoaming net, so that the overall defoaming efficiency of the demister is further improved, and the double defoaming mechanism not only can effectively reduce the generation of foams, but also can ensure the smooth proceeding of the crystallization process.

Description

Technical Field

[0001] This utility model belongs to the field of titanium dioxide processing technology, and in particular relates to a defoaming device for a vacuum crystallizer of titanium dioxide. Background Technology

[0002] A vacuum crystallizer for titanium dioxide is a device specifically designed for the titanium dioxide production process. It mainly improves the purity and quality of titanium dioxide by crystallizing in a vacuum environment. Under vacuum, the crystallizer can lower the boiling point of the liquid and promote solvent evaporation, thereby accelerating the crystallization process and reducing interference from impurities. This equipment typically consists of a sealed container, a heating system, and a cooling system, which can precisely control temperature and pressure to achieve efficient separation and crystallization.

[0003] In existing vacuum crystallizers for titanium dioxide, a large amount of foam is often generated during the crystallization process. To address this issue, a defoaming device is usually required. However, most current defoaming devices use a single baffle demister, which has poor defoaming effect. This design not only makes it difficult to effectively control foam generation, but also easily leads to foam overflow or liquid overload when there is excessive foam, thereby damaging the equipment or causing operational errors. In addition, existing exhaust pipes cannot actively discharge the gas generated after foam decomposition, which further affects exhaust efficiency.

[0004] To address these issues, we provide a defoaming device for a vacuum crystallizer used in titanium dioxide production. Utility Model Content

[0005] The purpose of this invention is to provide a defoaming device for a vacuum crystallizer for titanium dioxide. By combining the defoaming component and the exhaust component, it solves the problems of poor defoaming effect and inability of the exhaust device to actively exhaust air in the existing defoaming devices for vacuum crystallizers for titanium dioxide.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a defoaming device for a vacuum crystallizer used in titanium dioxide production. It includes a crystallizer body, with a demister fixedly connected to the top of the crystallizer body. An exhaust pipe is connected to one side of the top of the demister. A defoaming assembly is installed inside the demister, including a return plate fixedly connected to the bottom of the demister. A defoaming screen is fixedly connected to the top of the demister. A fixing block is fixedly connected to the top of the demister, and a rotating rod is movably connected to the bottom of the fixing block. A turntable is fixedly connected to one end of the rotating rod, and a crushing disc is fixedly connected to the surface of the turntable. An exhaust assembly is installed inside the exhaust pipe, including a limiting block fixedly connected to the inner cavity of the exhaust pipe. A rotating shaft is movably connected to the inner cavity of the limiting block, and fan blades are fixedly connected to the surface of the rotating shaft. A first worm gear is fixedly connected to one side of the rotating shaft surface.

[0008] The present invention is further configured such that a first worm is movably connected to the inner cavity of the fixed block, a second worm is movably connected to one side of the inner cavity of the fixed block, a second worm wheel is fixedly connected to one side of the surface of the second worm, and the second worm wheel meshes with the first worm.

[0009] The present invention is further configured such that one end of the second worm extends into the interior of the exhaust pipe, and the second worm meshes with the first worm wheel.

[0010] The present invention is further configured such that a one-way valve is installed on one side of the surface of the exhaust pipe, and the one-way valve can control the flow of gas.

[0011] The present invention is further configured such that a drive groove is provided in the inner cavity of the fixed block, and one end of the first worm gear is fixedly connected to one end of the rotating rod through the inner cavity of the drive groove.

[0012] The present invention is further configured such that a motor is fixedly connected to the top of the fixing block, and the output end of the motor is fixedly connected to one end of the first worm gear.

[0013] The present invention is further configured such that a reflux port is provided in the inner cavity of the reflux plate, and the reflux plate is conical in shape.

[0014] The present invention is further configured such that a feed pipe is connected to one side of the top of the crystallizer body, and a valve is installed on the surface of the feed pipe.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model can effectively drive the rotating rod at one end of the first worm gear to rotate through the motor drive system, so that the crushing discs on the surface of the turntable can actively crush and defoam the foam. This design uses the rotating crushing discs to physically crush the foam and promote the elimination of foam. At the same time, the excess foam is subjected to secondary defoaming treatment through the defoaming screen, thereby further improving the overall defoaming efficiency of the demister. This dual defoaming mechanism can not only effectively reduce the generation of foam, but also ensure the smooth progress of the crystallization process.

[0017] 2. This utility model uses a first worm gear to drive a second worm wheel to rotate, which in turn drives the second worm gear to rotate. This causes the fan blades on the surface of the rotating shaft to rotate, thereby actively expelling the gas in the exhaust pipe. The fan blades also cool the expelled gas to prevent it from getting too hot. Furthermore, a one-way valve prevents external air from flowing back, thus achieving a vacuum state inside the crystallizer body.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A three-dimensional structural view of a defoaming device for a vacuum crystallizer used in titanium dioxide;

[0021] Figure 2 A cross-sectional view of a demister in a vacuum crystallizer demister for titanium dioxide;

[0022] Figure 3 An exploded view of the internal structure of the demister in a vacuum crystallizer demister device for titanium dioxide.

[0023] Figure 4 A cross-sectional view of the exhaust pipe in a defoaming device for a vacuum crystallizer of titanium dioxide;

[0024] Figure 5 This is a schematic diagram of the second worm gear and the second worm wheel in a vacuum crystallizer defoaming device for titanium dioxide.

[0025] In the attached diagram: 1. Crystallizer body; 2. Demister; 3. Exhaust pipe; 4. Reflux plate; 5. Demister screen; 6. Fixing block; 7. Rotating rod; 8. Turntable; 9. Crushing disc; 10. Limiting block; 11. Rotating shaft; 12. Fan blade; 13. First worm gear; 14. First worm; 15. Second worm; 16. Second worm gear; 17. Check valve; 18. Motor; 19. Feed pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] For a specific implementation example, please refer to Implementation Example 1. Figure 1-5 This utility model is a defoaming device for a vacuum crystallizer used for titanium dioxide, including a crystallizer body 1, a defoamer 2 fixedly connected to the top of the crystallizer body 1, and an exhaust pipe 3 connected to one side of the top of the defoamer 2; a defoaming assembly is provided in the inner cavity of the defoamer 2, the defoaming assembly includes a return plate 4, the return plate 4 is fixedly connected to the bottom of the inner cavity of the defoamer 2, a defoaming mesh 5 is fixedly connected to the top of the defoamer 2, a fixing block 6 is fixedly connected to the top of the defoamer 2, a rotating rod 7 is movably connected to the bottom of the fixing block 6, a turntable 8 is fixedly connected to one end of the rotating rod 7, and a crushing disc 9 is fixedly connected to the surface of the turntable 8; an exhaust assembly is provided inside the exhaust pipe 3, the exhaust assembly includes a limiting block 10, the limiting block 10 is fixedly connected to the inner cavity of the exhaust pipe 3, a rotating shaft 11 is movably connected to the inner cavity of the limiting block 10, a fan blade 12 is fixedly connected to the surface of the rotating shaft 11, and a first worm gear 13 is fixedly connected to one side of the surface of the rotating shaft 11.

[0028] Specifically: the bottom of the demister 2 is connected to the top of the crystallizer body 1 so that the foam can extend to the surface of the broken piece 9 through the return plate 4. The demister mesh 5 is mesh-like so as to remove the broken foam from the broken piece 9 and ensure the efficiency of demister removal. The fan blade 12 can actively discharge the gas in the demister 2 and cool the gas, which can effectively prevent the gas from accumulating inside the equipment and reduce potential safety hazards.

[0029] For a specific embodiment two, please refer to Figure 1-5 Based on the specific embodiment one, a first worm gear 14 is movably connected to the inner cavity of the fixed block 6, a second worm gear 15 is movably connected to one side of the inner cavity of the fixed block 6, a second worm wheel 16 is fixedly connected to one side of the surface of the second worm gear 15, the second worm wheel 16 meshes with the first worm gear 14, one end of the second worm gear 15 extends into the interior of the exhaust pipe 3, the second worm gear 15 meshes with the first worm wheel 13, a one-way valve 17 is installed on one side of the surface of the exhaust pipe 3, the one-way valve 17 can control the flow of gas, a drive groove is opened in the inner cavity of the fixed block 6, one end of the first worm gear 14 is fixedly connected to one end of the rotating rod 7 through the inner cavity of the drive groove, a motor 18 is fixedly connected to the top of the fixed block 6, the output end of the motor 18 is fixedly connected to one end of the first worm gear 14, a return port is opened in the inner cavity of the return plate 4, the shape of the return plate 4 is conical, a feed pipe 19 is connected to one side of the top of the crystallizer body 1, and a valve is installed on the surface of the feed pipe 19.

[0030] Specifically: One end of the first worm gear 14 is fixedly connected to the output end of the motor 18, and the other end is fixedly connected to one end of the rotating rod 7, so as to drive the second worm wheel 16 and the turntable 8 to rotate simultaneously. One end of the second worm gear 15 is rotatably connected to one side of the inner cavity of the fixed block 6 through a bearing, and the other end extends into the interior of the exhaust pipe 3, and one side of its surface is sealed to the surface of the exhaust pipe 3. The one-way valve 17 can discharge the gas inside the demister 2 into the air, but the air cannot flow back into the demister 2, creating a vacuum state inside the crystallizer body 1. The liquid after the foam is broken can be returned to the interior of the crystallizer body 1 through the return port.

[0031] The working principle of this utility model is as follows: When it is necessary to defoam the inside of the vacuum crystallizer for titanium dioxide, the motor 18 is first started by the external controller. The motor 18 drives the first worm gear 14 to rotate. The first worm gear 14 simultaneously drives the rotating rod 7 and the second worm wheel 16 to rotate. The rotating rod 7 drives the turntable 8 to rotate. The turntable 8 drives the crushing disc 9 to rotate, thereby removing the foam that has spread above the return plate 4. When there is too much foam, some of the foam that overflows from the turntable 8 will be removed by the defoaming net 8, thereby achieving a double defoaming effect. After the foam is removed, the liquid in the foam is guided back into the crystallizer body 1 through the return plate 4.

[0032] Simultaneously, the second worm gear 16 drives the second worm 15 to rotate, the second worm 15 drives the first worm gear 13 to rotate, the first worm gear 13 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the fan blade 12 to rotate. Since liquid and hot gas are generated after the foam is removed, the liquid is guided back into the crystallizer body 1, while the hot gas needs to be discharged. When the fan blade 12 rotates, it can drive the hot gas inside the demister 2 to actively discharge into the air, and the one-way valve 17 can prevent the air from flowing back into the demister 2. When the fan blade 12 rotates, in addition to discharging the hot gas, it can also cool the hot gas to prevent it from overheating and affecting the external environment when it is discharged. In this way, the defoaming work of the vacuum crystallizer for titanium dioxide can be completed.

[0033] All standard parts used in this invention can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through the control unit. The control circuit of the control unit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, the control method and circuit connection will not be explained in detail in this invention.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A defoaming device for a vacuum crystallizer used in titanium dioxide, comprising a crystallizer body (1), characterized in that: A demister (2) is fixedly connected to the top of the crystallizer body (1), and an exhaust pipe (3) is connected to one side of the top of the demister (2). The demister (2) is provided with a demister assembly in its inner cavity. The demister assembly includes a return plate (4), which is fixedly connected to the bottom of the demister (2). A demister mesh (5) is fixedly connected to the top of the demister (2). A fixing block (6) is fixedly connected to the top of the demister (2). A rotating rod (7) is movably connected to the bottom of the fixing block (6). A turntable (8) is fixedly connected to one end of the rotating rod (7). A crushing disc (9) is fixedly connected to the surface of the turntable (8). An exhaust assembly is provided inside the exhaust pipe (3). The exhaust assembly includes a limiting block (10). The limiting block (10) is fixedly connected to the inner cavity of the exhaust pipe (3). A rotating shaft (11) is movably connected to the inner cavity of the limiting block (10). A fan blade (12) is fixedly connected to the surface of the rotating shaft (11). A first worm gear (13) is fixedly connected to one side of the surface of the rotating shaft (11).

2. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 1, characterized in that: The inner cavity of the fixed block (6) is movably connected to a first worm (14), and a second worm (15) is movably connected to one side of the inner cavity of the fixed block (6). A second worm wheel (16) is fixedly connected to one side of the surface of the second worm (15), and the second worm wheel (16) meshes with the first worm (14).

3. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 2, characterized in that: One end of the second worm (15) extends into the interior of the exhaust pipe (3), and the second worm (15) meshes with the first worm wheel (13).

4. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 1, characterized in that: A one-way valve (17) is installed on one side of the surface of the exhaust pipe (3), and the one-way valve (17) can control the flow of gas.

5. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 2, characterized in that: The inner cavity of the fixed block (6) is provided with a drive groove, and one end of the first worm (14) is fixedly connected to one end of the rotating rod (7) through the inner cavity of the drive groove.

6. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 1, characterized in that: A motor (18) is fixedly connected to the top of the fixed block (6), and the output end of the motor (18) is fixedly connected to one end of the first worm (14).

7. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 1, characterized in that: The reflux plate (4) has a reflux port in its inner cavity, and the reflux plate (4) is conical in shape.

8. The defoaming device for a vacuum crystallizer of titanium dioxide according to claim 1, characterized in that: The top side of the crystallizer body (1) is connected to a feed pipe (19), and a valve is installed on the surface of the feed pipe (19).

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