Flash tank cleaning device

Abstract

The utility model discloses a flash tank cleaning device, relates to the technical field of flash tank cleaning, and aims to solve the technical problems that the existing cleaning operation of a blanking tank is tedious, time-consuming and labor-consuming, and the production efficiency of titanium dioxide is influenced. The device comprises an upper tank and a lower tank which are detachably connected in a sealed mode, the lower tank is connected with a communicated material conveying device, a cleaning device is detachably connected into the lower tank and comprises a fixing ring, a plurality of circulation openings are formed in the fixing ring and communicated with the material conveying device, and the fixing ring is rotationally connected with an automatic cleaning part. By adopting the fixing ring with the circulation opening, the automatic cleaning part, the conveying device communicated with the upper tank and the lower tank and the like, waste acid generated by the upper tank can be directly conveyed into the lower tank, power is provided for the automatic cleaning part to rotate and clean slurry in the lower tank, the slurry in the lower tank is dispersed, the slurry flow rate is increased, and the lower tank is prevented from being blocked; and after the automatic cleaning speed and effect of the lower tank are improved, the production rate of products can be improved, and the economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flash tank cleaning, and in particular relates to a flash tank cleaning device. Background Art

[0002] Titanium dioxide is an important inorganic chemical pigment, the main component of which is titanium dioxide. There are two production processes for titanium dioxide: sulfuric acid process and chlorination process. It has important uses in industries such as coatings, inks, papermaking, plastics and rubber, chemical fibers, and ceramics.

[0003] During the production of titanium dioxide, the highest temperature that the washing device can withstand is 70°C, so it is necessary to cool the hydrolyzed titanic acid, and cool the titanic acid at 100-110°C to below 70°C to facilitate the subsequent washing operation. At present, the most common cooling method in the industry is cooling through a graphite heat exchanger, but because titanic acid itself is a white viscous liquid, in the process of cooling using a graphite heat exchanger, as the temperature gradually decreases, the fluidity of the titanic acid gradually deteriorates, which can easily cause the graphite heat exchanger to become clogged, affecting the production of titanium dioxide. Therefore, the industry gradually adopts flash evaporation to cool titanic acid. The flash evaporation method uses the different boiling points of substances under different pressures to concentrate and cool titanic acid, but the concentrated titanic acid after cooling has a certain viscosity and poor fluidity, and is easily clogged at the discharge port of the flash tank.

[0004] The existing patent number CN210933853U is a negative pressure flash cooling system for the production of metatitanic acid. The flash tank is improved from an integrated flash tank to a top and bottom separated feeding tank, which can be directly replaced when the bottom tank is blocked. However, cleaning the flash tank by replacing the bottom tank requires the use of a hoisting device and manual cooperation, which is cumbersome, time-consuming and labor-intensive, prolonging the production process of titanium dioxide and reducing production efficiency. Utility Model Content

[0005] The utility model discloses a flash tank cleaning device, which is intended to solve the above-mentioned technical problems that the cleaning operation of the feed tank is complicated, time-consuming and labor-intensive, and affects the production efficiency of titanium dioxide.

[0006] In order to solve the above-mentioned technical problems, the technical solutions adopted by the present utility model are as follows:

[0007] A flash tank cleaning device comprises an upper tank and a lower tank which are detachably sealed and connected, the lower tank being connected to a feeding device which is communicated with the lower tank, a cleaning device being detachably connected inside the lower tank, the cleaning device comprising a fixing ring which is provided with a plurality of flow ports which are communicated with the feeding device, and an automatic cleaning part being rotatably connected to the fixing ring.

[0008] After adopting this technical solution, the lower tank of the flash tank can be cleaned directly through the cleaning device, so that the concentrated titanic acid slurry attached to the inner wall of the lower tank enters the hydrolysis link together with the waste acid, reducing the loss of concentrated slurry, thereby improving the productivity of the product. Specifically, through the feeding device, the mixed concentrated slurry and waste acid output from the flash tank after flash evaporation can be directly placed in the feeding device for precipitation. Due to the different densities of the waste acid and the concentrated slurry, the waste acid is divided into the precipitation of the concentrated slurry and the waste acid of the supernatant in the precipitation output device. The feeding device extracts the waste acid of the supernatant, and the waste acid flows into the lower tank through the flow port on the fixed ring, which can clean the viscous titanic acid slurry attached to the inner wall of the lower tank. At the same time, the waste acid contacts the automatic cleaning part, provides power to the automatic cleaning part, and makes the automatic cleaning part rotate on the inner wall of the fixed ring to clean the concentrated titanic acid slurry attached to the inner wall of the fixed ring, so as to realize the automatic cleaning of the lower tank, reduce the trouble caused by manual cleaning, and improve the comfort of the staff. At the same time, the automatic cleaning unit can also disperse the concentrated titanic acid slurry in the lower tank, and further disperse the concentrated titanic acid slurry so that the concentrated slurry can quickly flow out of the flash tank, thereby reducing the loss of concentrated slurry and preventing the lower tank from being blocked, thereby realizing the continuous feeding process of the flash tank, and improving the outflow rate of the concentrated slurry in the flash tank, thereby increasing the production rate of the product and achieving the purpose of improving economic benefits.

[0009] Wherein, the automatic cleaning part includes a cleaning ring, a plurality of fan blades are arranged on the cleaning ring, the cleaning ring includes a cleaning upper ring and a cleaning lower ring, the cleaning upper ring and the cleaning lower ring are connected through the fan blades, a plurality of liquid storage cavities are arranged in the fan blades, and the liquid storage cavities are connected with the flow port.

[0010] After adopting this technical solution, the waste acid enters the liquid storage cavity of the fan blade through the circulation port, providing a torque biased in the direction of rotation to the fan blade, so that the fan blade rotates in a fixed direction, and then the entire cleaning ring rotates on the fixed ring. On the one hand, the fan blade cleans the concentrated slurry attached to the inner wall of the fixed ring, and on the other hand, the fan blade can disperse the concentrated slurry in the lower tank during the continuous rotation process, increasing the fluidity between the concentrated slurry, so that the concentrated slurry can easily flow out of the lower tank and enter the next link. The flow of waste acid provides the power for the cleaning ring to rotate, which can effectively save energy, reduce energy consumption, and achieve the effect of automatic cleaning, reduce the design of manual or electronic monitoring, and optimize the human resource structure.

[0011] Wherein, the liquid storage cavity is arranged obliquely.

[0012] After adopting this technical solution, the inclined setting of the liquid storage chamber can enable the waste acid flowing into the liquid storage chamber to be continuously and quickly renewed, thereby ensuring that the impact force on the liquid storage chamber is always large, thereby ensuring the rotation speed of the fan blades, and the waste acid entering the liquid storage chamber can flow out from the gap between the fan blades and the fixed ring into the lower tank.

[0013] Wherein, the height of the fan blade is greater than the height of the fixing ring, and the size and shape of the fan blade match the size and shape of the lower tank.

[0014] After adopting this technical solution, the fan blades can clean the concentrated slurry attached to the inner wall of the fixed ring, and can also directly scrape and clean part of the inner wall of the lower tank, which cooperates with the waste acid cleaning to improve the cleaning rate and reduce the loss of concentrated slurry. On the other hand, due to the increase in the contact area between the fan blades and the concentrated slurry, the cutting area of ​​the fan blades on the concentrated slurry can be further increased, thereby improving the flow rate of the concentrated slurry, allowing the concentrated slurry to flow out of the lower tank quickly, preventing the lower tank from being blocked, and achieving the continuity of flash cooling.

[0015] Wherein, a ring groove is arranged on a side of the fixing ring away from the lower tank, a sliding block is slidably connected to the ring groove, and the sliding block is connected to the cleaning ring.

[0016] After adopting this technical solution, when the waste acid impacts the fan blades and the fan blades begin to generate torque, the slider on the cleaning ring is driven to rotate in the slide groove in the fixed ring, thereby cleaning the concentrated slurry attached to the fixed ring and the lower tank and dispersing the concentrated slurry. The setting of the ring groove and the slider can improve the stability of the cleaning ring during rotation, thereby improving the stability of the device during use.

[0017] Among them, the feeding device includes a feeding pipe, one end of which is connected to the titanate buffer tank, and the other end is connected to the fixed ring. A booster pump is arranged on the feeding pipe, and a one-way valve is arranged on the side of the feeding pipe close to the lower tank.

[0018] After adopting this technical solution, the booster pump can further increase the impact force of the waste acid on the cleaning ring, so that the cleaning ring can start to rotate quickly, the fan blades can quickly disperse the concentrated slurry, and the one-way valve can ensure that the material does not flow back, thereby increasing the stability of the device during use and improving the production rate. At the same time, after the mixture of concentrated slurry and waste acid output by the flash tank is precipitated in the metatitanic acid buffer tank, the waste acid can be directly used in the cleaning of the lower tank, so that the material can be reused in the cooling and concentration process, reducing material consumption, thereby reducing cost losses and improving economic benefits.

[0019] Wherein, an observation window is arranged on the lower tank, and a scale is arranged on the observation window.

[0020] After adopting this technical solution, the cleanliness and flow of the concentrated slurry inside the lower tank can be observed through the observation window. If necessary, the production rate can be controlled to prevent safety accidents and ensure the safety of the device during use.

[0021] Wherein, a steam outlet is provided on the upper tank, and the steam outlet is connected to a negative pressure vacuum device.

[0022] After adopting this technical solution, a low boiling point is created through a negative pressure vacuum device, so that the water vapor of the thinner slurry can evaporate instantly when entering the flash tank and be sucked out from the steam outlet, thereby quickly concentrating and cooling the slurry.

[0023] Wherein, a material discharge port is arranged at the bottom of the lower tank, the material discharge port is communicated with the metatitanic acid buffer tank, and a slurry feed port is arranged on the upper tank.

[0024] After adopting this technical solution, the concentrated and cooled slurry flows directly out from the material discharge port and is buffered in the titanic acid buffer tank, which is convenient for subsequent operations. The slurry that needs to be cooled and concentrated enters the flash tank from the slurry feed port without being mixed with other materials, thereby ensuring the concentration and purity of the slurry and improving the production rate of the product.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0026] (1) By using a fixed ring with several flow ports and a feeding device connecting the automatic cleaning part and the lower tank, the precipitated waste acid produced by the flash tank can be directly input into the lower tank, providing power for the automatic cleaning part to rotate and clean the concentrated slurry in the lower tank, and at the same time dispersing the concentrated slurry in the lower tank, thereby improving the flow rate of the concentrated slurry and preventing the lower tank from being blocked. After improving the automatic cleaning speed and effect of the lower tank, it can also improve the productivity of the product and improve the economic benefits.

[0027] (2) By using a feeding device connected to the lower tank, the precipitated waste acid produced in the flash tank can be directly used in the cleaning of the lower tank. The flow of waste acid provides the power for the cleaning ring to rotate, so that the material can be reused in the cooling and concentration process, reducing material consumption, thereby reducing cost loss and improving economic benefits. It can also achieve the effect of automatic cleaning, reduce the design of manual or electronic monitoring, and optimize the human resource structure.

[0028] (3) The use of fan blades with an inclined liquid storage chamber can enable the waste acid flowing into the liquid storage chamber to be continuously and rapidly renewed, thereby ensuring that the impact force on the liquid storage chamber is always large, thereby ensuring the rotation speed of the fan blades, increasing the dispersion and cleaning speed of the concentrated slurry, and thus improving productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a three-dimensional structural schematic diagram of a flash tank cleaning device of the utility model;

[0031] Figure 2 This is a schematic diagram of the planar structure of a flash tank cleaning device of the utility model;

[0032] Figure 3 This is a distribution diagram of the fan blades in the utility model;

[0033] Figure 4 It is a schematic diagram of the connection relationship between the utility model and the feeding device.

[0034] Reference numerals

[0035] 1-steam discharge port, 2-upper tank, 3-cleaning device, 301-fixed ring, 302-ring groove, 303-circulation port, 304-fan blade, 305-liquid storage chamber, 306-slider, 4-feeding device, 401-feeding pipe, 402-boosting pump, 5-lower tank, 501-material discharge port, 6-observation window, 7-titanic acid buffer tank. DETAILED DESCRIPTION

[0036] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and indicated in the accompanying drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0037] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] Combine the following Figure 1-Figure 4 The utility model is described in detail.

[0039] A flash tank cleaning device, such as Figure 1-Figure 4As shown, it includes an upper tank 2 and a lower tank 5 which are detachably sealed and connected, the lower tank 5 is connected with a feeding device 4, the feeding device 4 is communicated with the lower tank 5, a cleaning device 3 is detachably connected inside the lower tank 5, the cleaning device 3 includes a fixing ring 301, a plurality of flow ports 303 are provided on the fixing ring 301, the flow ports 303 are communicated with the feeding device 4, and the fixing ring 301 is rotatably connected with an automatic cleaning part.

[0040] In this embodiment, the upper tank 2 and the lower tank 5 are sealed by a sealing ring, and the upper tank 2 and the lower tank 5 are detachably connected by bolts.

[0041] In this embodiment, the lower tank 5 is connected to the fixing ring 301 by bolts.

[0042] In this embodiment, the flow openings 303 are evenly distributed on the side wall of the fixing ring 301 .

[0043] In this embodiment, the fixing ring 301 is made of stainless steel, which is resistant to high temperatures and corrosion.

[0044] The cleaning device 3 can directly clean the lower tank 5 of the flash tank, so that the concentrated titanic acid slurry attached to the inner wall of the lower tank 5 enters the hydrolysis stage together with the waste acid, reducing the loss of concentrated slurry and thus improving the productivity of the product. Specifically, the mixed concentrated slurry and waste acid output from the flash tank after flash evaporation can be directly placed in the feeding device 4 for precipitation through the feeding device 4. Due to the different densities of the waste acid and the concentrated slurry, the waste acid is divided into the precipitation of the concentrated slurry and the supernatant waste acid through the precipitation feeding device 4. The feeding device 4 extracts the waste acid of the supernatant, and the waste acid flows into the lower tank 5 through the flow port 303 on the fixed ring 301, which can clean the viscous titanate slurry attached to the inner wall of the lower tank 5. At the same time, the waste acid contacts the automatic cleaning part, providing power to the automatic cleaning part, so that the automatic cleaning part rotates on the inner wall of the fixed ring 301, and cleans the concentrated titanate slurry attached to the inner wall of the fixed ring 301, thereby realizing automatic cleaning of the lower tank 5, reducing the trouble caused by manual cleaning, and improving the comfort of the staff.

[0045] At the same time, the automatic cleaning unit can also disperse the concentrated titanic acid slurry in the lower tank 5, and further disperse the concentrated titanic acid slurry so that the concentrated slurry can quickly flow out of the flash tank, thereby reducing the loss of the concentrated slurry and preventing the lower tank 5 from being blocked, thereby realizing the continuous feeding process of the flash tank, and improving the outflow rate of the concentrated slurry in the flash tank, thereby increasing the production rate of the product and achieving the purpose of improving economic benefits.

[0046] In this embodiment, the automatic cleaning part includes a cleaning ring, on which a plurality of fan blades 304 are provided. The cleaning ring includes an upper cleaning ring and a lower cleaning ring, which are connected to each other through the fan blades 304. A plurality of liquid storage cavities 305 are provided in the fan blades 304, and the liquid storage cavities 305 are connected to the flow port 303.

[0047] In this embodiment, eight fan blades 304 are provided, and the fan blades 304 are welded at the connection between the cleaning upper ring and the cleaning lower ring.

[0048] In this embodiment, five liquid storage chambers 305 are provided, and the five liquid storage chambers 305 are evenly distributed on the side where the fan blade 304 contacts the fixing ring 301 .

[0049] Waste acid enters the liquid storage chamber 305 of the fan blade 304 through the circulation port 303, providing a torque biased in the rotation direction to the fan blade 304, so that the fan blade 304 rotates in a fixed direction, and then the entire cleaning ring rotates on the fixed ring 301. On the one hand, the fan blade 304 cleans the concentrated slurry attached to the inner wall of the fixed ring 301, and on the other hand, the fan blade 304 can disperse the concentrated slurry in the lower tank 5 during the continuous rotation process, thereby increasing the fluidity between the concentrated slurries and making it easy for the concentrated slurry to flow out of the lower tank 5 and enter the next link.

[0050] The flow of waste acid provides the power for the cleaning ring to rotate, which can effectively save energy, reduce energy consumption, achieve the effect of automatic cleaning, reduce the design of manual or electronic monitoring, and optimize the human resource structure.

[0051] In this embodiment, a ring groove 302 is provided on a side of the fixing ring 301 away from the lower tank 5 , and a sliding block 306 is slidably connected to the ring groove 302 , and the sliding block 306 is connected to the cleaning ring.

[0052] In this embodiment, two annular grooves 302 are provided, and the two annular grooves 302 are symmetrically distributed on the inner side walls at both ends of the fixing ring 301 .

[0053] In this embodiment, the slider 306 is welded to the cleaning ring.

[0054] In this embodiment, when the waste acid impacts the fan blade 304 and the fan blade 304 starts to generate torque, the slider 306 on the cleaning ring is driven to rotate in the slide groove in the fixed ring 301, thereby cleaning the concentrated slurry attached to the fixed ring 301 and the lower tank 5 and dispersing the concentrated slurry. The provision of the annular groove 302 and the slider 306 can improve the stability of the cleaning ring during rotation, thereby improving the stability of the device during use.

[0055] In this embodiment, the feeding device 4 includes a feeding pipe 401, one end of which is connected to the titanate buffer tank 7, and the other end is connected to the fixing ring 301. A boosting pump 402 is arranged on the feeding pipe 401, and a one-way valve is arranged on the side of the feeding pipe 401 close to the lower tank 5.

[0056] In this embodiment, both ends of the feed pipe 401 are respectively connected to the upper tank 2 and the lower tank 5 through sealing interfaces. The fixing ring 301 is provided with a connecting port, and the connecting port is connected to a connecting pipe. The connecting pipe passes through the lower tank 5 and is connected to the connection. The part of the connecting pipe placed outside is provided with a sealing interface.

[0057] The booster pump 402 can further increase the impact force of the waste acid on the cleaning ring, so that the cleaning ring can start to rotate quickly, the fan blade 304 can quickly disperse the concentrated slurry, and the one-way valve can ensure that the material does not flow back, thereby increasing the stability of the device during use and improving the production rate. At the same time, after the mixture of concentrated slurry and waste acid output by the flash tank is precipitated in the metatitanic acid buffer tank 7, the waste acid can be directly used in the cleaning of the lower tank 5, so that the material can be reused in the cooling and concentration process, reducing material consumption, thereby reducing cost losses and improving economic benefits.

[0058] In this embodiment, an observation window 6 is provided on the lower tank 5 , and a scale is provided on the observation window 6 .

[0059] The observation window 6 can be used to observe the cleanliness and flow of the concentrated slurry inside the lower tank 5. If necessary, the production rate can be controlled to prevent safety accidents and ensure the safety of the device during use.

[0060] In this embodiment, a steam outlet 1 is provided on the upper tank 2, and the steam outlet 1 is connected to a negative pressure vacuum device.

[0061] The negative pressure vacuum device creates a low boiling point, so that the water vapor of the thinner slurry can evaporate instantly when entering the flash tank, and be sucked out from the steam outlet 1, so as to quickly concentrate and cool the slurry.

[0062] In this embodiment, a material discharge port 501 is provided at the bottom of the lower tank 5 , and the material discharge port 501 is communicated with the metatitanic acid buffer tank 7 . A slurry feed port is provided on the upper tank 2 .

[0063] The concentrated and cooled slurry flows directly out from the material discharge port 501 and is buffered in the titanic acid buffer tank to facilitate subsequent operations. The slurry that needs to be cooled and concentrated enters the flash tank from the slurry feed port without being mixed with other materials, thereby ensuring the concentration and purity of the slurry and improving the production rate of the product.

[0064] The specific use method of the utility model is as follows:

[0065] Reference Figure 1-Figure 4 When the device is used, the cleaning device 3 is first installed in the lower tank 5, and the lower tank 5 is connected with the upper tank 2, the feeding device 4 is connected with the upper tank 2 and the lower tank 5, etc., and then the device is started to work. The slurry with a temperature of 100-110°C has a lower boiling point when entering the flash tank due to the setting of the vacuum negative pressure device, and the water in the slurry evaporates instantly and is sucked out through the steam outlet 1.

[0066] The remaining material flows out from the material outflow port 501 at the bottom of the lower tank 5. The material flowing out of the flash tank is a mixture of waste acid and concentrated slurry. The mixture is allowed to stand in the metatitanic acid buffer tank 7. The content after standing is the waste acid of the upper clear liquid and the concentrated slurry of the lower precipitation. The waste acid of the upper clear liquid is pumped into the lower tank 5 by the pressure pump and the one-way valve through the feed pipe 401, and is connected with the fixed ring 301 through the connecting pipe in the lower tank 5, and directly enters the lower tank 5 through the flow port 303 in the fixed ring 301 to contact with the concentrated slurry in the lower tank 5, and clean the concentrated slurry; at the same time, the waste acid is passed through the flow The through opening 303 enters into the liquid storage cavity 305 of the fan blade 304, providing a torque biased in the rotation direction to the fan blade 304, so that the fan blade 304 rotates in a fixed direction, and then the entire cleaning ring rotates in the slide groove in the fixed ring 301 through the slider 306. On the one hand, the fan blade 304 cleans the concentrated slurry attached to the inner wall of the fixed ring 301, and on the other hand, the fan blade 304 can disperse the concentrated slurry in the lower tank 5 during the continuous rotation process, thereby increasing the fluidity between the concentrated slurries and making it easy for the concentrated slurry to flow out from the material discharge port 501 at the bottom of the lower tank 5 and enter the next link.

[0067] The staff can also automatically observe the liquid level and fluidity of the concentrated slurry in the lower tank 5 through the observation window 6, so as to control the production rate when necessary to prevent accidents and improve the safety of the device.

[0068] Example 2

[0069] This embodiment is basically the same as Embodiment 1, except that: in this embodiment, the height of the fan blade 304 is greater than the height of the fixing ring 301 , and the size and shape of the fan blade 304 match the size and shape of the lower tank 5 .

[0070] On the one hand, the fan blades 304 can clean the concentrated slurry attached to the inner wall of the fixed ring 301, and can also directly scrape and clean part of the inner wall of the lower tank 5, which cooperates with the waste acid cleaning to improve the cleaning rate and reduce the slurry loss. On the other hand, due to the increase in the contact area between the fan blades 304 and the concentrated slurry, the fan blades 304 can further increase the dispersion area of ​​the concentrated slurry, thereby improving the flow rate of the concentrated slurry, so that the concentrated slurry can quickly flow out of the lower tank 5, preventing the lower tank 5 from being blocked, and achieving the continuity of flash evaporation cooling.

[0071] Example 3

[0072] This embodiment is basically the same as Embodiment 1, except that: in this embodiment, the liquid storage cavity 305 is arranged obliquely.

[0073] In this embodiment, the height of the liquid storage cavity 305 gradually decreases from the side away from the fixing ring 301 to the side close to the fixing ring 301 .

[0074] The inclined setting of the liquid storage chamber 305 can enable the waste acid flowing into the liquid storage chamber 305 to be continuously and quickly renewed, thereby ensuring that the impact force on the liquid storage chamber 305 is always large, thereby ensuring the rotation speed of the fan blade 304, and the waste acid entering the liquid storage chamber 305 can flow out from the gap between the fan blade 304 and the fixed ring 301 into the lower tank 5.

[0075] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flash tank cleaning device, characterized in that: The invention comprises an upper tank (2) and a lower tank (5) which are detachably sealed and connected, the lower tank (5) being connected to a feeding device (4), the feeding device (4) being in communication with the lower tank (5), a cleaning device (3) being detachably connected inside the lower tank (5), the cleaning device (3) comprising a fixing ring (301), the fixing ring (301) being provided with a plurality of flow ports (303), the flow ports (303) being in communication with the feeding device (4), and the fixing ring (301) being rotatably connected to an automatic cleaning unit; The automatic cleaning portion comprises a cleaning ring, a plurality of fan blades (304) are arranged on the cleaning ring, the cleaning ring comprises an upper cleaning ring and a lower cleaning ring, the upper cleaning ring and the lower cleaning ring are connected via the fan blades (304), a plurality of liquid storage cavities (305) are arranged in the fan blades (304), and the liquid storage cavities (305) are communicated with the circulation port (303).

2. A flash tank cleaning device according to claim 1, characterized in that: The liquid storage chamber (305) is arranged obliquely.

3. A flash tank cleaning device according to claim 1, characterized in that: The height of the fan blade (304) is greater than the height of the fixing ring (301), and the size and shape of the fan blade (304) match the size and shape of the lower tank (5).

4. A flash tank cleaning device according to claim 1, characterized in that: A ring groove (302) is provided on a side of the fixing ring (301) away from the lower tank (5), and a sliding block (306) is slidably connected to the ring groove (302), and the sliding block (306) is connected to the cleaning ring.

5. A flash tank cleaning device according to any one of claims 1 to 4, characterized in that: The feeding device (4) comprises a feeding pipe (401), one end of the feeding pipe (401) is connected to the titanate buffer tank (7), and the other end is communicated with the fixing ring (301), a booster pump (402) is arranged on the feeding pipe (401), and a one-way valve is arranged on a side of the feeding pipe (401) close to the lower tank (5).

6. A flash tank cleaning device according to any one of claims 1 to 4, characterized in that: The lower tank (5) is provided with an observation window (6), and the observation window (6) is provided with a scale.

7. A flash tank cleaning device according to any one of claims 1 to 4, characterized in that: The upper tank (2) is provided with a steam outlet (1), and the steam outlet (1) is connected to a negative pressure vacuum device.

8. A flash tank cleaning device according to claim 5, characterized in that: The bottom of the lower tank (5) is provided with a material discharge port (501), the material discharge port (501) is communicated with the metatitanic acid buffer tank (7), and the upper tank (2) is provided with a slurry feed port.

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