A conveying pipe for titanium dioxide production

Abstract

The application discloses a conveying pipe for titanium dioxide production and relates to the technical field of pipes.The conveying pipe for titanium dioxide production comprises a pipe body, and a rotating switching mechanism for online switching and replacement of pipe function components is arranged on the side wall of the pipe body.The conveying pipe for titanium dioxide production can realize online maintenance and replacement of pipe function components without stopping and depressurizing and emptying, completely eliminates the stopping maintenance defects caused by the traditional fixed installation structure, guarantees the continuous, stable and efficient conveying of titanium dioxide wastewater, and simultaneously, the conical filter screen which can rotate with the fluid in the pipe is arranged at both ends of the mounting hole, the impact of large particle gypsum crystals and metatitanic acid particles can be effectively blocked, dynamic anti-blocking and anti-fouling protection is realized, the pipe function components are prevented from being wrapped, abraded or corroded, the service life of the heating / aeration type function components is remarkably prolonged, and the long-term stable operation of the pipe conveying system is ensured.

Description

Technical Field

[0001] This invention relates to the field of pipeline technology, specifically to a conveying pipe for titanium dioxide production. Background Technology

[0002] Wastewater generated during titanium dioxide production is mostly acidic and contains solids, including impurities such as metatitanic acid particles and gypsum crystals. During pipeline transportation, it is highly susceptible to problems such as low-temperature crystallization, pipe wall scaling, high fluid viscosity, and poor flowability. In severe cases, this can cause pipeline blockage, affecting continuous production. To improve transportation conditions, heating devices and aeration devices are often installed in pipelines to increase fluid temperature, inhibit crystal precipitation, prevent particle deposition, and reduce pipe wall scaling.

[0003] In actual production, to ensure good heating and aeration effects throughout the pipeline, multiple sets of heating and aeration components are typically arranged at intervals along the conveying direction. However, existing heating rods, aeration heads, and other pipeline components are mostly fixedly installed, making them prone to crystallization, impurity blockage, or corrosion damage during long-term use. Maintenance and replacement require shutting down, depressurizing, and purging the pipeline, leading to production interruptions. Traditional structures lack online switching and standby functions. When a heating or aeration component fails, the corresponding pipe section loses its function, easily causing increased local crystallization and blockage, making it difficult to meet the requirements for continuous, stable, and efficient conveying of titanium dioxide wastewater. Summary of the Invention

[0004] The purpose of this invention is to provide a conveying pipe for titanium dioxide production with a dual-station online switching pipeline functional component and protection for the functional component, so as to solve the problems mentioned in the background art, such as the pipeline functional component being easily worn by gypsum crystals and metatitanic acid particles, the need for machine shutdown and production stoppage for functional component replacement and maintenance, and the inability to meet the anti-clogging requirements.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a conveying pipe for titanium dioxide production, comprising a main body; the main body includes a pipe body and pipe functional components disposed within the pipe body; the main body further includes a switching mechanism for switching and replacing the pipe functional components; the switching mechanism includes an installation groove formed on the side wall of the pipe body, and a circular cover sealed within the installation groove; the switching mechanism further includes a rotating disk rotatably disposed within the circular cover, two installation holes formed along the circumference of the rotating disk, and a driving mechanism for driving the rotating disk to rotate; the circular cover has a through hole communicating with the interior of the pipe body, and a replacement hole for replacing the pipe functional components; the pipe functional components are sealed and connected within the installation holes, and when the rotating disk rotates, the installation holes can selectively communicate with either the through hole or the replacement hole, allowing one pipe functional component to extend into the pipe body through the through hole, while the other pipe functional component remains in standby position at the replacement hole; conical filter screens that can rotate with the water flow within the pipe are provided at both ends of the installation holes to prevent large particles and gypsum crystals in the titanium dioxide wastewater from entering the installation holes.

[0006] Preferably, the switching mechanism further includes filter holes formed on the side wall of the conical filter and a drive assembly for driving the conical filter to rotate; the drive assembly includes a drive shaft connected to the conical filter, a fixing block connected between the drive shaft and the through hole, and a turbine connected to the drive shaft.

[0007] Preferably, the driving mechanism includes a rotating rod connected to a circular cover, a rocker wheel connected to the side wall of the rotating rod, and a control component for controlling the rotation angle of the rotating rod; the rotating disk is fixedly sleeved on the side wall of the rotating rod.

[0008] Preferably, the control component includes a disc connected to the rotating rod, two slots formed on the side wall of the disc, and a block inserted into the slot; the control component also includes a lifting component for lifting and lowering the block.

[0009] Preferably, the lifting assembly includes a lifting block connected to the locking block, a connecting block connected to the circular cover, and a first spring telescopic rod connected between the lifting block and the connecting block.

[0010] Preferably, the switching mechanism further includes an installation mechanism for installing the pipeline functional components; the installation mechanism includes a mounting base connected to the inner wall of the mounting hole, a first wiring groove opened at the end of the rotating rod, and a second wiring groove connecting the first wiring groove and the mounting base; the second wiring groove is opened inside the rotating disk.

[0011] Preferably, the switching mechanism further includes a sealing mechanism for sealing the replacement hole; the sealing mechanism includes a sealing cover and a rotating pin connected between the sealing cover and the circular cover.

[0012] Preferably, the switching mechanism further includes a recovery mechanism for recovering wastewater in the mounting hole; the recovery mechanism includes a suction pipe communicating with the circular cover, a working box connected to the circular cover, and a connecting pipe communicating between the working box and the suction pipe; the recovery mechanism also includes a first valve communicating with the working box and a return pipe communicating between the first valve and the pipe body; the recovery mechanism also includes a piston plate sliding in the working box and a moving mechanism for driving the piston plate to move; a first one-way valve is provided in the suction pipe; and a second one-way valve is provided in the return pipe.

[0013] Preferably, the moving mechanism includes a pushing assembly for moving the piston plate and a second spring telescopic rod connected between the piston plate and the working box; the pushing assembly includes a connecting rod connected to the piston plate, a ball connected to the connecting rod, and a cam connected to the rotating rod; the connecting rod is disposed through the side wall of the working box.

[0014] Preferably, the recycling mechanism further includes a sampling component for sampling wastewater; the sampling component includes a sampling tube and a second valve connecting the sampling tube and the working box; a third one-way valve is provided inside the sampling tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This type of titanium dioxide production conveying pipe features a switching mechanism on the side wall of the pipe body. A drive mechanism rotates the rotating disc and the pipe components within the mounting holes. One component extends into the pipe body through a through-hole to participate in fluid heating or aeration, while the other component remains in standby for maintenance at the replacement hole. This allows for online inspection and replacement of pipe components without shutdown or pressure relief, completely eliminating the downtime and maintenance drawbacks of traditional fixed installation structures and ensuring continuous, stable, and efficient conveying of titanium dioxide wastewater. Simultaneously, the installation of self-rotating conical filters at both ends of the mounting holes effectively blocks the impact of large gypsum crystals and metatitanic acid particles, achieving dynamic anti-clogging and anti-scaling protection. This prevents pipe components from being encapsulated by crystals, worn, or corroded, significantly extending the service life of heating / aeration components and ensuring the long-term stable operation of the pipeline conveying system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention;

[0019] Figure 3 This is a schematic diagram of the switching mechanism in this invention;

[0020] Figure 4This is a schematic diagram showing the location of the control components in this invention;

[0021] Figure 5 This is a partial cross-sectional view of the tube body in this invention;

[0022] Figure 6 This is a schematic diagram of the control component in this invention;

[0023] Figure 7 This is a schematic diagram of the recycling mechanism in this invention;

[0024] Figure 8 This is a cross-sectional view of the circular cover and rotating disk in this invention.

[0025] Figure 9 This is a partial cross-sectional view of the circular cover in this invention.

[0026] Figure 10 This is a partial cross-sectional view of the working box in this invention.

[0027] In the diagram: 1. Pipe body; 201. Conical filter screen; 202. Filter holes; 203. Fixing block; 204. Drive shaft; 205. Turbine; 301. Mounting base; 302. Second wiring groove; 303. First wiring groove; 401. Rotating rod; 402. Rocker wheel; 501. Disc; 502. Slot; 503. Locking block; 601. Connecting block; 602. First spring telescopic rod; 603. Lifting block; 701. Rotating pin; 702. Seal 801. Cover; 802. Suction tube; 803. Working box; 804. Piston plate; 805. Connecting tube; 806. First valve; 807. Return tube; 908. Connecting rod; 909. Ball bearing; 9000. Second spring telescopic rod; 901. Cam; 1002. Second valve; 1003. Sampling tube; 11. Mounting groove; 12. Circular cover; 13. Rotating disk; 14. Mounting hole; 15. Pipeline functional component; 16. Through hole; 17. Replacement hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-10This invention provides a conveying pipe for titanium dioxide production, comprising a main body; the main body includes a pipe body 1 and a pipe functional component 15 disposed within the pipe body 1, the pipe functional component 15 being a heating rod and an aeration head; the main body also includes a switching mechanism for switching and replacing the pipe functional component 15; the switching mechanism includes an installation groove 11 formed on the side wall of the pipe body 1, and a circular cover 12 sealed and connected within the installation groove 11, the angle of the installation groove 11 and the installation angle of the circular cover 12 being adjustable according to actual needs; the switching mechanism also includes a rotating disk 13 rotatably disposed within the circular cover 12, two mounting holes 14 formed circumferentially along the rotating disk 13, and a driving mechanism for driving the rotating disk 13 to rotate, a sealing gasket being provided on the side wall of the circular cover 12 that cooperates with the rotating disk 13 to ensure sealing; the circular cover 12 has a through hole 16 communicating with the interior of the pipe body 1, and a replacement hole 17 for replacing the pipe functional component 15. The pipe functional component 15 is sealed and connected to the mounting hole 14. When the rotating disk 13 rotates, the mounting hole 14 can selectively connect with the through hole 16 or the replacement hole 17, so that one of the pipe functional components 15 extends into the pipe body 1 through the through hole 16, and the depth of the extension is 1 / 4 to 1 / 3 of the inner diameter of the pipe body. This ensures both heating and aeration effects and greatly reduces the obstruction to the fluid in the pipe. The other pipe functional component 15 is located at the replacement hole 17 and is ready for use. The two ends of the mounting hole 14 are provided with conical filter screens 201 that can rotate with the water flow in the pipe. These screens are used to block large particles and gypsum crystals in the titanium dioxide wastewater from entering the mounting hole 14. By setting a switching mechanism on the side wall of the pipe body 1 and using a drive mechanism to drive the rotating disk 13 and the pipe functional component 15 in the mounting hole 14 to rotate, one of the pipe functional components 15 extends into the pipe body 1 through the through hole 16 to participate in fluid heating or aeration disturbance. The other pipe functional component 15 is ready for maintenance at the replacement hole 17. This allows for online maintenance and replacement of pipeline components 15 without shutdown or pressure relief, completely eliminating the downtime maintenance drawbacks of traditional fixed installation structures and ensuring continuous, stable, and efficient transportation of titanium dioxide wastewater. Simultaneously, by installing conical filter screens 201 at both ends of the mounting holes 14, which rotate with the fluid inside the pipe, the impact of large gypsum crystals and metatitanic acid particles can be effectively blocked, achieving dynamic anti-clogging and anti-scaling protection. This prevents pipeline components 15 from being encapsulated by crystals, worn, or corroded, significantly extending the service life of heating / aeration components and ensuring the long-term stable operation of the pipeline transportation system.

[0030] The switching mechanism also includes filter holes 202 opened on the side wall of the conical filter 201 and a drive assembly for driving the conical filter 201 to rotate. The drive assembly includes a drive shaft 204 connected to the conical filter 201, a fixing block 203 connected between the drive shaft 204 and the through hole 16, and a turbine 205 connected to the drive shaft 204. The turbine 205 is driven to rotate by the water flow in the pipe, and then drives the conical filter 201 to rotate synchronously through the drive shaft 204. There is no need to set up an additional power drive mechanism. The conical filter 201 is self-cleaned by the kinetic energy of the fluid in the pipe, which effectively avoids the filter screen from crystallizing and clogging, and fundamentally ensures the long-term stable operation of the pipeline functional component 15.

[0031] The drive mechanism includes a rotating rod 401 connected to the circular cover 12, a rocker wheel 402 connected to the side wall of the rotating rod 401, and a control component for controlling the rotation angle of the rotating rod 401. The rotating disk 13 is fixedly sleeved on the side wall of the rotating rod 401. The rocker wheel 402 drives the rotating disk 13 to rotate synchronously through the rotating rod 401. With the help of the control component, a precise 180° work position switching is achieved, ensuring that the pipeline functional component 15 can be inspected and replaced without production interruption. The structure is simple and reliable, and the operation and maintenance are convenient.

[0032] The control component includes a disc 501 connected to the rotating rod 401, two slots 502 formed on the side wall of the disc 501, and a block 503 inserted into the slots 502. The control component also includes a lifting component for lifting and moving the block 503. The lifting component drives the block 503 to engage or disengage from the slots 502, thereby achieving 180° precise locking and unlocking of the rotating rod 401. This ensures stable switching of the pipeline functional component 15 between the working position and the replacement position, and prevents position deviation caused by vibration during operation.

[0033] The lifting assembly includes a lifting block 603 connected to the locking block 503, a connecting block 601 connected to the circular cover 12, and a first spring telescopic rod 602 connected between the lifting block 603 and the connecting block 601. The first spring telescopic rod 602 continuously pushes the lifting block 603 toward the disc 501 through its own elastic force, so that the locking block 503 always remains engaged with the locking slot 502, thereby achieving automatic locking of the rotating rod 401. Only when the lifting block 603 is manually pulled to overcome the spring force will the locking block 503 disengage from the locking slot 502, completing the work position switching. This ensures the ease of operation during the switching process and fundamentally avoids erroneous switching and work position offset caused by working condition vibration, ensuring the stable operation of the pipeline functional component 15.

[0034] The switching mechanism also includes an installation mechanism for installing the pipeline functional component 15; the installation mechanism includes a mounting base 301 connected to the inner wall of the mounting hole 14, a first wiring groove 303 opened at the end of the rotating rod 401, and a second wiring groove 302 connecting the first wiring groove 303 and the mounting base 301; the second wiring groove 302 is opened in the rotating disk 13, the pipeline functional component 15 is sealed and installed on the mounting base 301, and the wire harness is led outward through the second wiring groove 302 and the first wiring groove 303 to achieve sealed wiring of the pipeline functional component 15, avoid the wire harness being exposed to the wastewater environment inside the pipe and being corroded or entangled, and at the same time prevent the leakage of the medium inside the pipe, ensure service life and heating or aeration effect, and thus ensure the anti-clogging effect.

[0035] The switching mechanism also includes a sealing mechanism for sealing the replacement hole 17; the sealing mechanism includes a sealing cover 702 and a rotating pin 701 connected between the sealing cover 702 and the circular cover 12. The sealing cover 702 can rotate around the rotating pin 701 to open and close the replacement hole 17, protect the spare pipeline functional component 15 at the replacement position, prevent it from being corroded and contaminated, and ensure its performance.

[0036] The switching mechanism also includes a recovery mechanism for recovering wastewater within the mounting hole 14; the recovery mechanism includes a suction pipe 801 connected to the circular cover 12, a working box 802 connected to the circular cover 12, and a connecting pipe 804 connecting the working box 802 and the suction pipe 801; the recovery mechanism also includes a first valve 805 connected to the working box 802 and a return pipe 806 connecting the first valve 805 and the pipe body 1; the recovery mechanism also includes a piston plate 803 sliding within the working box 802 and a moving mechanism for driving the piston plate 803 to move; a first one-way valve is provided inside the suction pipe 801. The first check valve is directed from the circular cover 12 into the working box 802; a second check valve is installed in the return pipe 806, and the second check valve is directed from the working box 802 into the pipe body 1. When the piston plate 803 is driven to move back and forth by the moving mechanism, the wastewater remaining in the mounting hole 14 is drawn into the working box 802 through the suction pipe 801, the first check valve and the working box 802. Then, the wastewater is sent back to the pipe body 1 through the first valve 805 and the second check valve via the return pipe 806, which avoids wastewater leakage and pollution of the site when replacing the pipeline functional component 15, and at the same time achieves zero discharge and recycling of wastewater, ensuring operational safety and environmental protection.

[0037] The moving mechanism includes a pushing assembly that moves the piston plate 803 and a second spring telescopic rod 903 connected between the piston plate 803 and the working box 802. The pushing assembly includes a connecting rod 901 connected to the piston plate 803, a ball bearing 902 connected to the connecting rod 901, and a cam 904 connected to the rotating rod 401. The connecting rod 901 passes through the side wall of the working box 802. When the cam 904 rotates synchronously with the rotating rod 401, the protrusion of the cam 904 intermittently squeezes and contacts the ball bearing 902. Through the connecting rod 901, the piston plate 803 is pushed to overcome the resistance of the second spring telescopic rod 903 to make reciprocating motion, thereby realizing the automatic circulation of liquid extraction and return. No additional driving power is required. Waste liquid recovery can be completed by relying only on the rotation action of the pipeline functional component 15 when switching, ensuring that there is no waste liquid residue leakage in the mounting hole 14.

[0038] The recycling mechanism also includes a sampling component for sampling wastewater. The sampling component includes a sampling tube 1002 and a second valve 1001 connecting the sampling tube 1002 and the working box 802. A third check valve is installed inside the sampling tube 1002. The direction of the third check valve is from the working box 802 to the sampling tube 1002. The third check valve only allows wastewater in the working box 802 to flow into the sampling tube 1002 in one direction, preventing wastewater backflow and contamination of the medium in the tube during sampling. Opening the second valve 1001 allows online sampling of titanium dioxide wastewater without interrupting pipeline operation or affecting normal transportation. At the same time, it avoids wastewater leakage and medium contamination during sampling, making it more convenient and faster, and ensuring operational safety.

[0039] Working principle: Pipe body 1 is the main carrier for transporting titanium dioxide production wastewater. Pipe body 1 is made of highly corrosion-resistant titanium alloy / plastic-lined material, suitable for the strongly acidic medium and high concentration of solid particles in titanium dioxide wastewater. During use, the sealing cover 702 is rotated open along the rotating pin 701 to expose the replacement hole 17 for installation of the pipeline functional component 15. During installation, the wiring harness of the pipeline functional component 15 is led outward along the second wiring groove 302 and the first wiring groove 303, and the pipeline functional component 15 is sealed and installed on the mounting base 301. Then, by rotating the rocker wheel 402, the rotation of the rocker wheel 402 can drive the rotation of the rotating rod 401. The disc 13 rotates 180 degrees inside the circular cover 12. At this time, the pipe functional component 15 can be installed in another mounting hole 14. At the same time, one of the installed pipe functional components 15 can be rotated into the pipe body 1, so that the mounting hole 14 coincides with the through hole 16. At this time, the wastewater in the pipe body 1 can enter the mounting hole 14 through the through hole 16, be heated or aerated by the pipe functional component 15, and flow out into the pipe body 1, realizing the anti-clogging operation of the pipe body 1. Furthermore, the sealing cover 702 is rotated and closed along the rotating pin 701, sealing the replacement hole 17, and providing sealing protection for the unused pipe functional component 15 inside.

[0040] When the pipe component 15 needs to be repaired or replaced, turn the rocker wheel 402 so that the rotating disk 13 rotates 180 degrees again, aligning the other mounting hole 14 with the through hole 16. At this time, the other pipe component 15 can be used to heat or aerate the wastewater in the pipe body 1. The pipe component 15 that needs to be repaired or replaced is rotated upward to the replacement hole 17, and the sealing cover 702 is opened. The pipe component 15 can then be repaired or replaced. Thus, during repair or replacement, the normal heating or aeration of the wastewater in the pipe body 1 will not be affected, and the pipe body 1 does not need to be shut down. This is more convenient and faster, ensuring the efficiency of conveying titanium dioxide production wastewater.

[0041] When wastewater enters the through hole 16, the conical filter 201 blocks large particles and gypsum crystals in the titanium dioxide wastewater, protecting the pipe component 15 and reducing clogging and wear. At the same time, when wastewater enters the through hole 16, it impacts the surface of the turbine 205, causing the turbine 205 to rotate. This rotation, via the drive shaft 204, drives the conical filter 201 to rotate, keeping the surface of the conical filter 201 in a dynamic self-cleaning state. Simultaneously, the large particles and gypsum crystals adhering to the conical filter 201 create a centrifugal effect, preventing the conical filter 201 from clogging and the mounting hole 14 from forming stagnant water and scale. This improves the performance and lifespan of the pipe component 15, thereby ensuring the anti-clogging effect on the pipe body 1.

[0042] When the rotating disk 13 rotates, it drives the mounting hole 14 and the pipe functional component 15 to rotate. When the mounting hole 14 is misaligned with the through hole 16, the circular cover 12 can seal both ends of the mounting hole 14. In addition, the wastewater in the pipe body 1 will fill the mounting hole 14. When the rotating rod 401 and the rotating disk 13 rotate, the rotating rod 401 can drive the cam 904 to rotate synchronously, so that the ball 902 can roll along the side wall of the cam 904, thereby pushing the piston plate 803 to move. At the same time, the second spring telescopic rod 903 is compressed, so that the area in the working box 802 connected with the connecting pipe 804 generates negative pressure. When the mounting hole 14 is connected with the liquid extraction pipe 801, the wastewater in the mounting hole 14 can enter the working box 802 for temporary storage through the liquid extraction pipe 801 and the connecting pipe 804.

[0043] When the ball bearing 902 passes the cam 904, the suction pipe 801 is no longer connected to the mounting hole 14. The piston plate 803 can move and reset under the action of the second spring telescopic rod 903, and can squeeze the wastewater temporarily stored in the working box 802. At this time, the wastewater can be squeezed back into the pipe body 1 through the first valve 805 and the return pipe 806 to ensure the conveying effect. Furthermore, when it is necessary to sample the wastewater in the pipe body 1, the first valve 805 can be closed and the second valve 1001 can be opened. At this time, the wastewater in the working box 802 can be squeezed out and collected through the second valve 1001 and the sampling pipe 1002, which facilitates the sampling operation of the wastewater in the pipe body 1, making it more convenient and faster.

[0044] Furthermore, during the switching process, the lifting block 603 is first pushed upward, while the first spring telescopic rod 602 is compressed, causing the locking block 503 to disengage from one of the slots 502. At this point, the disc 501 and the rotating rod 401 are no longer restricted. Then, the rocker wheel 402 is rotated, which drives the rotating rod 401, the disc 501, and the rotating disk 13 to rotate. Next, the lifting block 603 is released, allowing it to move downward under the action of the first spring telescopic rod 602, and causing the locking block 503 to move downward, allowing the locking block 503 to roll on the surface of the disc 501. When the locking block 503 aligns with the other slot 502, it can be inserted under the action of the first spring telescopic rod 602 for restriction, thus facilitating the control of the rotation angle of the rotating rod 401 and the rotating disk 13. Moreover, it can restrict the rotation of the rotating rod 401 and the rotating disk 13, making it not only more convenient and faster but also more stable and reliable during use.

Claims

1. A conveying pipe for titanium dioxide production, comprising a pipe body (1), characterized in that: The side wall of the pipe body (1) is provided with a rotary switching mechanism for online switching and replacement of pipe functional components (15); The rotary switching mechanism includes an installation groove (11) opened on the side wall of the tube body (1), a circular cover (12) sealed and connected in the installation groove (11), a rotating disk (13) rotatably set in the circular cover (12), at least two installation holes (14) opened along the circumference of the rotating disk (13), and a drive mechanism for driving the rotating disk (13) to rotate. The circular cover (12) has a through hole (16) communicating with the inside of the pipe body (1) and a replacement hole (17) for replacing the pipe functional component (15). The mounting hole (14) is sealed with a pipe functional component (15). When the rotating disk (13) rotates, the mounting hole (14) is switched to be connected with the through hole (16) or the replacement hole (17), so that one of the pipe functional components (15) extends into the pipe body (1) through the through hole (16), and the other pipe functional component (15) is located at the replacement hole (17) for standby. The mounting hole (14) is provided with conical filter screens (201) that can rotate with the fluid in the pipe, which are used to block solid impurities in titanium dioxide wastewater from entering the mounting hole (14). The driving mechanism includes a rotating rod (401) connected to the circular cover (12), a rocker wheel (402) connected to the side wall of the rotating rod (401), and a control component for controlling the rotation angle of the rotating rod (401); the rotating disk (13) is fixedly sleeved on the side wall of the rotating rod (401). The switching mechanism also includes a recycling mechanism for recycling wastewater in the mounting hole (14); the recycling mechanism includes a suction pipe (801) connected to the circular cover (12), a working box (802) connected to the circular cover (12), and a connecting pipe (804) connecting the working box (802) and the suction pipe (801); the recycling mechanism also includes a first valve (805) connected to the working box (802) and a return pipe (806) connecting the first valve (805) and the pipe body (1); the recycling mechanism also includes a piston plate (803) sliding in the working box (802) and a moving mechanism for driving the piston plate (803) to move; a first one-way valve is provided in the suction pipe (801); a second one-way valve is provided in the return pipe (806).

2. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The switching mechanism also includes filter holes (202) formed on the side wall of the conical filter (201) and a drive assembly for driving the conical filter (201) to rotate; the drive assembly includes a drive shaft (204) connected to the conical filter (201), a fixing block (203) connected between the drive shaft (204) and the through hole (16), and a turbine (205) connected to the drive shaft (204).

3. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The control component includes a disc (501) connected to a rotating rod (401), two slots (502) opened on the side wall of the disc (501), and a block (503) inserted into the slot (502); the control component also includes a lifting component for lifting and lowering the block (503).

4. The conveying pipe for titanium dioxide production according to claim 3, characterized in that: The lifting assembly includes a lifting block (603) connected to the locking block (503), a connecting block (601) connected to the circular cover (12), and a first spring telescopic rod (602) connected between the lifting block (603) and the connecting block (601).

5. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The switching mechanism also includes an installation mechanism for installing the pipe functional component (15); the installation mechanism includes a mounting base (301) connected to the inner wall of the mounting hole (14), a first wiring groove (303) opened at the end of the rotating rod (401), and a second wiring groove (302) connecting the first wiring groove (303) and the mounting base (301); the second wiring groove (302) is opened in the rotating disk (13).

6. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The switching mechanism also includes a sealing mechanism for sealing the replacement hole (17); the sealing mechanism includes a sealing cover (702) and a rotating pin (701) connected between the sealing cover (702) and the circular cover (12).

7. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The moving mechanism includes a pushing assembly that pushes the piston plate (803) to move and a second spring telescopic rod (903) connected between the piston plate (803) and the working box (802); the pushing assembly includes a connecting rod (901) connected to the piston plate (803), a ball (902) connected to the connecting rod (901), and a cam (904) connected to the rotating rod (401); the connecting rod (901) is disposed through the side wall of the working box (802).

8. The conveying pipe for titanium dioxide production according to claim 1, characterized in that: The recycling mechanism also includes a sampling component for sampling wastewater; the sampling component includes a sampling tube (1002) and a second valve (1001) connecting the sampling tube (1002) and the working box (802); a third one-way valve is provided inside the sampling tube (1002).

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