Titanium dioxide post-treatment tank pressure relief device

Abstract

The utility model belongs to the technical field of titanium dioxide production, and particularly relates to a titanium dioxide post-treatment groove pressure relief device which comprises a post-treatment groove, a pressure relief groove is formed in a top cover of the post-treatment groove in a penetrating mode, transversely-distributed grids are arranged in the pressure relief groove, grid gaps of the grids are filled with leaf-shaped balls, and the leaf-shaped balls are arranged in the pressure relief groove. And a cylindrical cavity which is longitudinally distributed is formed in the middle of the leaf-shaped ball and is used for circulating gas. According to the titanium dioxide post-treatment tank pressure relief device, the grids are transversely arranged in the pressure relief tank, and the gaps of the grids are filled with the leaf-shaped balls, so that the leaf-shaped balls fill the inner cavity of the pressure relief tank, and a large amount of gas introduced by recycled materials can be rapidly guided out through the longitudinally-distributed cylindrical cavities formed in the middles of the leaf-shaped balls; and the purpose of quick pressure relief is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of titanium dioxide production technology, and in particular relates to a pressure relief device for a titanium dioxide treatment tank. Background Technology

[0002] Titanium dioxide is produced by two methods: chlorination and sulfuric acid processes. In China, the sulfuric acid process is mainly used. However, regardless of whether it is the chlorination or sulfuric acid process, titanium dioxide production is divided into pre-treatment and post-treatment processes. Pre-treatment mainly involves the reaction and purification of titanium ore to obtain crude titanium dioxide, which is then further processed. Post-treatment mainly includes grinding, surface treatment, washing, drying, and air jet milling. Among these processes, surface treatment is an inorganic coating process. This process involves adding a coating agent under certain temperature and pH conditions to perform inorganic coating, which results in a relatively large amount of inorganic salts in the slurry, which need to be removed in the washing process.

[0003] The washing process includes feeding, backflushing, center washing, side washing (first and second), pressing, backflushing again, and corner blowing. During feeding, when the filter cloth is not full, some titanium dioxide will pass through the filter cloth with the water flow. This part needs to be recycled and is usually transferred to the post-treatment tank to wait for re-entry into the system. However, due to the pressure of the feeding and the fact that the filter cloth is usually located on a high floor, the water pressure is generally high, resulting in a large impact when it is transferred to the post-treatment tank. Similarly, backflushing and corner blowing involve pressurizing the center hole and the upper and lower corners of the filter cloth. High pressure is required to blow out the titanium dioxide from the center hole and corner holes. To avoid waste and environmental pollution, this part of the material is usually transferred to the post-treatment tank for recycling. However, due to the high pressure and the height of the floor, this impact will cause vibration and splashing of material in the post-treatment tank, leading to problems such as pipeline deformation, leakage, damage to the vibrating screen, and material splashing. Therefore, it is essential to depressurize as soon as possible during material recycling. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] A pressure relief device for a titanium dioxide treatment tank includes a treatment tank, the top cover of which is provided with a pressure relief groove, the inside of which is provided with a horizontally distributed grid, the gaps between the grids are filled with leaf-shaped spheres, and the center of the leaf-shaped spheres is provided with a longitudinally distributed cylindrical cavity for gas flow.

[0006] As a preferred embodiment of the above technical solution, the leaf-shaped ball is a spherical shape with blades arranged longitudinally around its perimeter. Multiple blades are provided, and there is a gap A between each pair of adjacent blades, which are connected by a strip support.

[0007] The leaf-shaped sphere has a support surface inside its cylindrical cavity, and the support surface has a gap.

[0008] As a preferred embodiment of the above technical solution, the grille includes a first layer of grille and a second layer of grille distributed in the vertical direction. The first layer of grille is fixedly installed at the bottom of the pressure relief groove and its height is flush with the top cover of the treated groove. The second layer of grille is located above the first layer of grille and is movably assembled in the upper middle part of the pressure relief groove.

[0009] As a preferred embodiment of the above technical solution, a support ring for supporting the second layer of grille is provided on the inner wall of the pressure relief groove.

[0010] As a preferred embodiment of the above technical solution, hooks are provided at the four corners of the second layer of grille, and the hooks are hung on the upper end of the pressure relief groove.

[0011] As a preferred embodiment of the above technical solution, the gap between the grids on the first and second layers of the grid is smaller than the diameter of the leaf-shaped sphere.

[0012] As a preferred embodiment of the above technical solution, the pressure relief groove is funnel-shaped with a smaller bottom and a larger top, and the pressure relief groove is perpendicular to the top cover of the treated tank.

[0013] As a preferred embodiment of the above technical solution, the interior of the post-treatment tank is provided with a stirring component, and the top cover of the post-treatment tank is provided with a surface treatment transfer pipe and a plate and frame return pipe. The surface treatment transfer pipe connects the surface treatment tank and the post-treatment tank, and the plate and frame return pipe connects the plate and frame and the post-treatment tank.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. A pressure relief device for a titanium dioxide treatment tank in this application is provided by horizontally setting a grid inside the pressure relief tank and filling the gaps of the grid with leaf-shaped balls, so that the leaf-shaped balls fill the inner cavity of the pressure relief tank, and the longitudinally distributed cylindrical cavities in the middle of the leaf-shaped balls can quickly discharge the large amount of gas introduced by the recycled materials, thereby achieving the purpose of rapid pressure relief.

[0016] 2. The titanium dioxide post-treatment tank pressure relief device in this application performs a rapid pressure relief operation on the post-treatment tank to reduce the problem of damage to pipelines, vibrating screens and other equipment caused by pressure-induced vibration.

[0017] 3. The pressure relief device for the titanium dioxide treatment tank in this application can not only quickly relieve the pressure surge caused by the recovery of materials, but also ensure that the materials are clean and will not introduce impurities. In addition, the equipment is simple, easy to clean and maintain, and has low maintenance and modification costs. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of a pressure relief device for a titanium dioxide treatment tank in Example 1.

[0019] Figure 2 The diagram shown is a schematic representation of the leaf-shaped sphere in Example 1;

[0020] Figure 3 The diagram shown is a top cross-sectional view of the leaf-shaped sphere in Example 1;

[0021] Figure 4 The diagram shown is a structural schematic of the first layer of the grille in Embodiment 1;

[0022] Figure 5 The diagram shown is a structural schematic of the second layer of the grille in Embodiment 1;

[0023] Figure 6 The diagram shown is a structural schematic of the pressure relief groove in Embodiment 1.

[0024] Reference numerals: 1. Post-treatment tank; 2. Mixing component; 3. Surface treatment transfer pipe; 4. Plate and frame return pipe; 5. Pressure relief tank; 51. First layer grid; 52. Second layer grid; 521. Hook; 522. Support ring; 53. Leaf-shaped ball; 531. Blade; 532. Strip support; 533. Support surface; 5331. Gap. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] Example 1

[0027] like Figure 1 As shown, a pressure relief device for a titanium dioxide treatment tank includes a treatment tank 1. A stirring element 2 is installed inside the treatment tank 1. A surface treatment transfer pipe 3 and a plate and frame return pipe 4 are installed on the top cover of the treatment tank 1. The surface treatment transfer pipe 3 connects the surface treatment tank and the treatment tank 1, and transfers the slurry after coating to the treatment tank 1. The plate and frame return pipe 4 connects the plate and frame to the treatment tank 1, and returns the filtrate and backflushed filter cake during the plate and frame feeding to the treatment tank 1.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, a pressure relief groove 5 is provided through the top cover of the post-treatment tank 1. In this embodiment, the pressure relief groove 5 is connected to the outside, which can discharge the steam inside the post-treatment tank 1 to achieve heat dissipation, reduce the temperature of the material reaching the plate frame, and extend the service efficiency of the filter cloth. The pressure relief groove 5 is trumpet-shaped with a smaller bottom and a larger top. The pressure relief groove 5 is perpendicular to the top cover of the post-treatment tank 1. In this embodiment, the cross-section of the pressure relief groove 5 can be set as square, rectangular, or circular. The pressure relief groove 5 is provided with horizontally distributed grids. The shape of the grids changes with the cross-section of the pressure relief groove 5. The gaps between the grids are filled with leaf-shaped balls 53. In this embodiment, the leaf-shaped balls 53 can be made of PVC or rubber material with a temperature resistance of up to 100℃. The leaf-shaped balls 53 are provided with longitudinally distributed cylindrical cavities in the middle for gas flow.

[0029] The titanium dioxide treatment tank pressure relief device of this application is configured by horizontally setting a grid inside the pressure relief tank 5 and filling the gaps of the grid with leaf-shaped balls 53, so that the leaf-shaped balls 53 fill the inner cavity of the pressure relief tank 5, and the longitudinally distributed cylindrical cavity in the middle of the leaf-shaped balls 53 can quickly discharge the large amount of gas introduced by the recycled material, thereby achieving the purpose of rapid pressure relief.

[0030] The pressure relief device in this application performs a rapid pressure relief operation on the post-treatment tank 1 to reduce the problem of damage to pipelines, vibrating screens and other equipment caused by pressure-induced vibration.

[0031] To further improve the pressure relief speed, the blade-shaped ball 53 was further optimized, such as... Figure 2 , Figure 3 As shown, the leaf-shaped sphere 53 is a spherical shape with blades 531 arranged longitudinally around its perimeter. Multiple blades 531 are provided, and each pair of adjacent blades 531 has a gap A connected by a strip support 532. The strip support 532 prevents the blades 531 from sticking together, maintaining a gap A between adjacent blades 531. A support surface 533 is provided inside the cylindrical cavity of the leaf-shaped sphere 53, and a gap 5331 is provided on the support surface 533. In this embodiment, the gap 5331 is cross-shaped. In this application, a gap A is added to the outside of the leaf-shaped sphere 53, and a gap 5331 is added inside the leaf-shaped sphere 53 to increase the gas outlet speed, further achieving the purpose of rapid pressure relief.

[0032] Since the grille is exposed to the air, impurities may fall into the pressure relief groove 5 during use. To address this issue, the pressure relief device will be further optimized, such as... Figure 1 , Figure 4 , Figure 5As shown, the grid includes a first layer of grid 51 and a second layer of grid 52 distributed in the vertical direction. The grid gaps on the first layer of grid 51 and the second layer of grid 52 are both smaller than the diameter of the leaf-shaped ball 53 to prevent the leaf-shaped ball 53 from detaching from the grid. The first layer of grid 51 is fixedly installed at the bottom of the pressure relief groove 5 and its height is flush with the top cover of the treated groove 1. The second layer of grid 52 is located above the first layer of grid 51 and is movably assembled in the upper middle part of the pressure relief groove 5.

[0033] In this application, the grid is configured as a first grid 51 and a second grid 52 distributed vertically. Both the first grid 51 and the second grid 52 are provided with leaf-shaped balls 53. The lower leaf-shaped ball 53 (the leaf-shaped ball 53 on the first grid 51) provides space for pressure relief, quickly releasing the large amount of gas introduced by the recycled material. The upper leaf-shaped ball 53 (the leaf-shaped ball 53 on the second grid 52) blocks dust, ensuring that the material is clean and will not introduce impurities.

[0034] When cleaning the leaf-shaped ball 53, since the second layer grid 52 is movably assembled with the pressure relief groove 5, the second layer grid 52 can be removed from the pressure relief groove 5 to clean the leaf-shaped ball 53; since the leaf-shaped ball 53 on the first layer grid 51 does not come into contact with the outside world, it can be directly rinsed with water, and the material carried out by the gas is directly rinsed into the post-treatment tank 1, which is simple to operate.

[0035] To achieve the movable assembly between the second-layer grille 52 and the pressure relief groove 5, such as Figure 6 As shown, a support ring 522 supporting the second-layer grille 52 is provided on the inner wall of the pressure relief groove 5; as Figure 5 As shown, hooks 521 are provided at the four corners of the second layer grille 52. The hooks 521 are hung on the upper end of the pressure relief groove 5. In this embodiment, the pressure relief groove 5, the support ring 522, and the hooks 521 are all made of stainless steel.

[0036] When assembling the second layer grille 52, the second layer grille 52 is placed on the support ring 522, and the hook 521 is hung on the upper end of the pressure relief groove 5. The second layer grille 52 is limited by the hook 521 being hung on the upper end of the pressure relief groove 5, which makes it convenient to pull out the second layer grille 52 through the hook 521 to clean the leaf-shaped ball 53.

[0037] The titanium dioxide treatment tank pressure relief device disclosed in this application can not only quickly relieve the pressure surge caused by the recycling of materials, but also ensure that the materials are clean and do not introduce impurities. In addition, the equipment is simple, easy to clean and maintain, and has low maintenance and modification costs.

[0038] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A pressure relief device for a titanium dioxide treatment tank, comprising a treatment tank (1), characterized in that, The top cover of the processed tank (1) is provided with a pressure relief groove (5). The pressure relief groove (5) is provided with a horizontally distributed grid. The gaps between the grids are filled with leaf-shaped balls (53). The leaf-shaped balls (53) are provided with a vertically distributed cylindrical cavity in the middle for gas flow.

2. The pressure relief device for a titanium dioxide treatment tank according to claim 1, characterized in that, The leaf-shaped ball (53) is a round ball with blades (531) arranged in a longitudinal direction around it. There are multiple blades (531), and there is a gap A between each two adjacent blades (531) and they are connected by a strip support (532). The leaf-shaped sphere (53) has a support surface (533) inside its cylindrical cavity, and the support surface (533) has a gap (5331).

3. The pressure relief device for a titanium dioxide treatment tank according to claim 1, characterized in that, The grille includes a first layer grille (51) and a second layer grille (52) distributed in the vertical direction. The first layer grille (51) is fixedly installed at the bottom of the pressure relief groove (5) and its height is flush with the top cover of the treated groove (1). The second layer grille (52) is located above the first layer grille (51) and is movably assembled in the upper middle part of the pressure relief groove (5).

4. The pressure relief device for a titanium dioxide treatment tank according to claim 3, characterized in that, The inner wall of the pressure relief groove (5) is provided with a support ring (522) for supporting the second layer of grille (52).

5. The pressure relief device for a titanium dioxide treatment tank according to claim 3, characterized in that, Hooks (521) are provided at the four corners of the second layer of grille (52), and the hooks (521) are hung on the upper end of the pressure relief groove (5).

6. The pressure relief device for a titanium dioxide treatment tank according to claim 3, characterized in that, The gaps between the grids on the first grid layer (51) and the second grid layer (52) are both smaller than the diameter of the leaf-shaped sphere (53).

7. The pressure relief device for a titanium dioxide treatment tank according to claim 1, characterized in that, The pressure relief groove (5) is in the shape of a trumpet, which is smaller at the bottom and larger at the top, and the pressure relief groove (5) is perpendicular to the top cover of the treated groove (1).

8. The pressure relief device for a titanium dioxide treatment tank according to claim 1, characterized in that, The interior of the post-treatment tank (1) is equipped with a stirring component (2). The top cover of the post-treatment tank (1) is equipped with a surface treatment transfer pipe (3) and a plate and frame return pipe (4). The surface treatment transfer pipe (3) connects the surface treatment tank and the post-treatment tank (1). The plate and frame return pipe (4) connects the plate and frame and the post-treatment tank (1).

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