Synthesis equipment for preparing bismuth hydroxide

Abstract

The invention relates to the technical field of chemical equipment, and discloses synthesis equipment for bismuth hydroxide preparation, the synthesis equipment comprises a tank body, a rotary table and a pipe group, a mounting disc is arranged in the tank body, the mounting disc can rotate around the central axis of the tank body, and the rotary table eccentrically penetrates through and is rotatably connected with the mounting disc; the pipe set comprises a liquid inlet pipe, a liquid outlet pipe and a coil pipe, one end of the liquid inlet pipe penetrates through the rotary table and extends to the first containing cavity, the other end of the liquid inlet pipe is connected with one end of the coil pipe, one end of the liquid outlet pipe penetrates through the rotary table and extends to the second containing cavity, and the other end of the liquid outlet pipe is connected with the other end of the coil pipe; the liquid inlet pipe is slidably connected with the rotary table and the barrel, the liquid outlet pipe is fixedly connected with the barrel, and the coil pipe can stretch out and draw back; the coil pipe is used for heating and stirring materials, the heating capacity and the stirring capacity are effectively and efficiently utilized before and after vacuum dehydration of bismuth hydroxide by adjusting the height of the coil pipe, the duration of vacuum dehydration of bismuth hydroxide is shortened, the dehydration efficiency of vacuum dehydration of bismuth hydroxide is improved, and therefore the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical equipment, and specifically relates to a synthesis device for preparing bismuth hydroxide. Background Art

[0002] The process of producing bismuth hydroxide by reacting bismuth oxide, fatty acid and sodium hydroxide is as follows: First step: At an environment of 60 - 100 °C, bismuth oxide reacts with fatty acid to generate bismuth(III) carboxylate and water; Second step: At an environment of 15 - 20 °C, bismuth(III) carboxylate reacts with sodium hydroxide to generate bismuth hydroxide and carbon dioxide, and process water is added for washing to adjust the pH = 7 - 8; Third step: Stand still for layering to form an aqueous layer and a material layer. The material layer sinks to the bottom and the aqueous layer is discharged.

[0003] Fourth step: Vacuum dehydrate the material layer to obtain the finished product of bismuth hydroxide.

[0004] In the above process, a temperature adjustment component and a stirring component are required to adjust the temperature and stir the materials.

[0005] Since the finished product of bismuth hydroxide needs to be obtained by first discharging the aqueous layer and then vacuum dehydrating, and the sum of the heights of the aqueous layer and the material layer before and after draining should be greater than the height of the material layer. During the vacuum dehydration process, auxiliary heating and stirring are also required. However, the original temperature adjustment component and stirring component cannot adjust the height according to the change in the height of the materials, resulting in waste of temperature adjustment ability and stirring ability during the vacuum dehydration process, thus causing waste of energy. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a synthesis device for preparing bismuth hydroxide, which can effectively solve the problems put forward in the background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A synthesis device for preparing bismuth hydroxide, comprising a tank body, a turntable and a pipe group; the turntable is eccentrically arranged in the tank body and can rotate around the central axis of the tank body and can also rotate around its own central axis; the pipe group includes a liquid inlet pipe, a liquid outlet pipe and a coil pipe. One end of the liquid inlet pipe penetrates through the turntable from below the turntable, and one end of the liquid outlet pipe penetrates through the turntable from below the turntable; The coil pipe includes a "U"-shaped first pipe section and a fourth pipe section. One end of the first pipe section is coaxially and rotatably connected to the other end of the liquid inlet pipe which is bent at 90°, and one end of the fourth pipe section is coaxially and rotatably connected to the other end of the liquid outlet pipe which is bent at 90°; The coiled pipe further includes a plurality of "U"-shaped second pipe sections and a plurality of "U"-shaped third pipe sections, and there is one more second pipe section than the third pipe section. The plurality of second pipe sections and the plurality of third pipe sections are alternately distributed and are sequentially rotatably connected to jointly form a telescopic spiral pipe; the head end and the tail end of the telescopic spiral pipe are respectively rotatably and coaxially connected to the other end of the first pipe section and the other end of the fourth pipe section; The liquid inlet pipe is slidably connected to the turntable and the cylinder body, the liquid outlet pipe is fixedly connected to the cylinder body, and the other end of the liquid outlet pipe extends to the bottom of the tank body.

[0008] Preferably, an installation ring is fixedly connected to the upper part of the inner circumferential surface of the tank body. An installation disc is installed at the upper end of the installation ring. The installation disc can rotate around the central axis of the tank body. The turntable eccentrically penetrates and is rotatably connected to the installation disc. A first gear is fixedly connected to the bottom end of the turntable. A gear ring is internally engaged with the first gear, and the gear ring is coaxially fixed to the lower end of the installation ring.

[0009] Preferably, a cylinder body is rotatably sleeved on the outer circumferential surface of the turntable above the installation disc. The cylinder body has a first cavity and a second cavity which are spaced apart up and down. The liquid inlet pipe extends into the first cavity, and the liquid outlet pipe extends into the second cavity.

[0010] Preferably, an annular box body is coaxially fixedly connected to the upper end of the tank body. The inner circumferential surface of the box body is open, and a partition frame is coaxially rotatably installed between the upper and lower inner wall surfaces. The partition frame divides the inner cavity of the box body into two non-communicating upper and lower first water chambers and second water chambers. The first water chamber is communicated with the first cavity, and the second water chamber is communicated with the second cavity.

[0011] Preferably, a first connecting pipe and a second connecting pipe which are respectively communicated with the first water chamber and the second water chamber are fixedly connected to the outer circumferential surface of the box body.

[0012] Preferably, the included angle between the adjacent second pipe section and the third pipe section is between 40° and 100°.

[0013] Preferably, it further includes an X-shaped telescopic frame formed by sequentially connecting a plurality of X-shaped frames. The X-shaped telescopic frame is installed on the spiral pipe and is used for telescoping the spiral pipe.

[0014] Preferably, a piston is slidably installed in the first cavity. The piston is rotatably connected to the liquid inlet pipe. A push rod is slidably installed at the end of the piston away from the liquid inlet pipe.

[0015] Preferably, it further includes a lifting device. The output end of the lifting device is fixedly connected to a lifting ring. A lifting rod is installed inside the lifting ring. The lifting rod can rotate circumferentially along the lifting ring and penetrates and is slidably connected to the push rod.

[0016] Compared with the prior art, the present invention provides a synthesis device for preparing bismuth hydroxide, which has the following beneficial effects: 1. During the process of producing bismuth hydroxide by reaction, the reaction materials can be fully stirred by the rotation of the coil around the central axis of the tank body and the rotation around the central axis of the frustum of a cone. Moreover, the heat medium for adjusting the reaction temperature can be fed into the coil, realizing the centralized setting of the stirring and heating functions.

[0017] 2. The included angle between the adjacent second pipe section and the third pipe section in the coil is between 40° and 100°, enabling the coil to lift the materials from bottom to top during rotation, achieving the mixing between the upper and lower parts of the materials and having a better stirring effect.

[0018] 3. The coil can be telescoped up and down, and the upper part of the coil can move relative to the lower part of the coil, enabling the height of the coil to be adjusted according to the height of the materials. Before and after vacuum dehydrating bismuth hydroxide, by adjusting the height of the coil, the coil can fully stir and heat the materials at different heights, realizing the effective and efficient utilization of the heating capacity and stirring capacity, shortening the time during vacuum dehydrating bismuth hydroxide, improving the dehydration efficiency during vacuum dehydrating bismuth hydroxide, and thus achieving the energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the schematic diagram of the overall structure of the present invention; Figure 2 is the schematic diagram of the internal structure of the present invention; Figure 3 is the schematic diagram of the structure of the water tank; Figure 4 is another schematic diagram of the internal structure of the present invention; Figure 5 is the connection schematic diagram of the X-shaped frame and the pipe group.

[0020] Wherein: 1. Tank body; 101. Mounting ring; 102. Feeding pipe; 103. Discharge pipe; 2. Turntable; 21. Gear one; 22. Ring gear; 3. Cylinder; 31. First cavity; 32. Second cavity; 4. Pipe group; 41. Liquid inlet pipe; 42. Liquid outlet pipe; 43. Coil; 44. X-shaped frame; 441. Rod one; 442. Rod two; 431. First pipe section; 432. Second pipe section; 433. Third pipe section; 434. Fourth pipe section; 5. Water tank; 51. Box body; 52. Partition frame; 511. First water chamber; 512. Second water chamber; 513. First connecting pipe; 514. Second connecting pipe; 6. Mounting disc; 61. Gear two; 62. Driving shaft; 63. Support plate; 7. Stabilizing disc; 8. First hose; 9. Second hose; 10. Piston; 11. Lifting device; 12. Lifting ring; 13. Lifting rod; 14. Push rod. DETAILED DESCRIPTION OF THE INVENTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 3 , a synthesis device for preparing bismuth hydroxide, comprising a tank body 1, a turntable 2, a cylinder body 3, a pipe group 4 and a water tank 5; Among them, the upper part of the tank body 1 is open, and an installation ring 101 is fixedly connected to the upper part of the inner circumferential surface of the tank body 1. The upper end of the installation ring 101 is coaxially and rotatably installed with an installation disc 6, and a sealing structure is formed between the installation ring 101 and the installation disc 6 to meet the sealing requirements during the reaction process; a circle of teeth is formed on the outer circumferential surface of the installation disc 6, and a second gear 61 is arranged beside the installation disc 6. The second gear 61 meshes with the teeth, and a driving shaft 62 is coaxially and fixedly connected to the second gear 61. The driving shaft 62 penetrates and rotatably connects a support plate 63, and the support plate 63 is fixed on the outer circumferential surface of the tank body 1; the driving shaft 62 can be driven by an external motor to rotate, so that the installation disc 6 can rotate around the central axis of the tank body 1; further, a groove matching with the second gear 61 is opened at the top end of the tank body 1 for the second gear 61 to move, and the groove is not communicated with the inner cavity of the tank body 1; The turntable 2 penetrates and rotatably connects the installation disc 6, and the turntable 2 is eccentrically arranged with the installation disc 6; the upper end of the turntable 2 exposes the tank body 1, and the lower end of the turntable 2 is fixedly connected with a first gear 21. The first gear 21 is internally meshed with a toothed ring 22, and the toothed ring 22 is coaxially fixed at the lower end of the installation ring 101; when the installation disc 6 rotates, it drives the turntable 2 and the first gear 21 to rotate around the central axis of the tank body 1. During the rotation of the first gear 21, it rotates synchronously by meshing with the toothed ring 22, so that the turntable 2 can rotate around the central axis of the tank body 1 and rotate around its own central axis; further, the intersection point of the central axis of the turntable 2 and the central axis of the installation disc 6 is located below the installation disc 6, so that when the central axis of the turntable 2 rotates around the central axis of the tank body 1, a conical area with a larger bottom and a smaller top can be formed in the inner cavity of the tank body 1; furthermore, a sealing structure is formed between the turntable 2 and the installation disc 6 to meet the sealing requirements during the reaction process; The lower end of the cylinder body 3 is open, and the cylinder body 3 is rotatably sleeved on the outer circumferential surface of the turntable 2 located above the installation disc 6 through the lower opening. A stabilizing disc 7 is fixedly sleeved on the outer circumferential surface of the cylinder body 3, and the stabilizing disc 7 is fixedly connected with the installation disc 6 together, so that the cylinder body 3 can rotate synchronously with the turntable 2 around the central axis of the tank body 1, and the cylinder body 3 and the turntable 2 can rotate relative to each other; The cylinder body 3 has a first cavity 31 and a second cavity 32 which are distributed at intervals up and down. A first pipe joint and a second pipe joint which are respectively communicated with the first cavity 31 and the second cavity 32 are fixedly connected to the outer circumferential surface of the cylinder body 3; The pipe group 4 includes a liquid inlet pipe 41, a liquid outlet pipe 42 and a coil pipe 43; Wherein, one end of the liquid inlet pipe 41 penetrates through the first gear 21 and the turntable 2 along the central axis of the turntable 2 from below the turntable 2 and extends to the first cavity 31, and the other end of the liquid inlet pipe 41 is connected to one end of the coil pipe 43; One end of the liquid outlet pipe 42 penetrates through the first gear 21 and the turntable 2 from below the turntable 2 and extends to the second cavity 42, and the other end of the liquid outlet pipe 32 extends to the bottom of the tank body 1 and is connected to the other end of the coil pipe 43; The water tank 5 includes a box body 51 and a partition frame 52. The box body 51 is in a ring structure, and the inner circumferential surface of the box body 51 is open. A partition frame 52 is coaxially and rotatably installed between the upper and lower inner wall surfaces of the box body 51. The partition frame 52 divides the inner cavity of the box body 51 into two non-communicating upper and lower first water chambers 511 and second water chambers 512; The box body 51 is coaxially fixed to the upper end of the tank body 1 and abuts against the upper surface of the mounting plate 6, and the partition frame 52 surrounds the stabilizing plate 7; A third pipe joint and a fourth pipe joint which are respectively communicated with the first water chamber 511 and the second water chamber 512 are fixedly connected to the inner circumferential surface of the partition frame 52; The third pipe joint is connected to the first pipe joint through a first hose 8, and the fourth pipe joint is connected to the second pipe joint through a second hose 9; First connecting pipes 513 and second connecting pipes 514 which are respectively communicated with the first water chamber 511 and the second water chamber 512 are fixedly connected to the outer circumferential surface of the box body 51.

[0023] The first connecting pipe 513, the first water chamber 511, the first hose 8, the first cavity 31, the liquid inlet pipe 41, the coil pipe 43, the liquid outlet pipe 42, the second cavity 32, the second hose 9, the second water chamber 512 and the second connecting pipe 514 together form a flow channel that flows in from the first connecting pipe 513 and flows out from the second connecting pipe 514.

[0024] A plurality of feeding pipes 102 are fixedly connected to the outer circumferential surface of the tank body 1, and a discharging pipe 103 is fixedly connected to the bottom end of the tank body 1. Bismuth oxide, fatty acid and sodium bicarbonate for reacting to generate bismuth hydroxide are fed into the tank body 1 through their respective feeding pipes 102 in the reaction sequence. The specific process is as follows: In the first stage, bismuth oxide reacts with fatty acid to generate bismuth(III) carboxylate and water; In the second stage, bismuth(III) carboxylate reacts with sodium bicarbonate to generate bismuth hydroxide and carbon dioxide.

[0025] In the first stage, a heating medium such as high-temperature water or high-temperature steam is fed into the tube group 4 to keep the temperature in the tank body 1 between 60°C and 100°C, and the tube group 4 is rotated and rotated self-rotationally to achieve a stirring effect, and the heat preservation reaction is carried out for 2 hours; In the second stage, the temperature of the heating medium in the tube group 4 is lowered, the temperature in the tank body 1 is adjusted between 15°C and 20°C, and the tube group 4 is rotated and rotated self-rotationally to achieve a stirring effect.

[0026] It should be noted that in the second stage, process water also needs to be fed into the tank body 1 through the corresponding feed pipe 102 for cleaning, and the PH is adjusted between 7 and 8 with sodium bicarbonate.

[0027] After the reaction is completed, the stirring is stopped and the mixture is allowed to stand for stratification to form a water layer and a material layer. The water layer is discharged from the tank body 1 through the corresponding feed pipe 102. After that, the material layer is dehydrated under vacuum. The vacuum dehydration temperature does not exceed 85°C and the vacuum is -0.095 Mpa, so that water vapor is discharged from the tank body 1 through the corresponding feed pipe 102; after dehydration, the temperature in the tank body 1 is adjusted between 20°C and 25°C to obtain the finished product bismuth hydroxide, and the finished product bismuth hydroxide is discharged from the tank body 1 through the discharge pipe 103.

[0028] It should be noted that the carbon dioxide generated by the reaction is discharged from the tank body 1 when the water layer is discharged and the vacuum is pumped.

[0029] As a further description of the above technical solution, since the total volume of the materials in the tank body 1 will change significantly before and after vacuum dehydration, that is, only the finished product bismuth hydroxide remains after vacuum dehydration, and the volume of the finished product bismuth hydroxide is significantly smaller than the volume of the mixture of bismuth hydroxide and water, and during vacuum dehydration, stirring and heating are required to improve the dehydration efficiency and effect. Therefore, during vacuum dehydration, in order to enable most of the coiled pipes 43 with heating and stirring functions to participate in heating and stirring bismuth hydroxide to further improve the dehydration efficiency and effect, the tube group 4 is further arranged as follows: As Figure 4 and Figure 5 shown, the liquid inlet pipe 41 is slidably connected to the turntable 2, the first gear 21, and the cylinder 3, the liquid outlet pipe 42 is fixedly connected to the turntable 2, and the other ends of the liquid inlet pipe 41 and the liquid outlet pipe 42 are both bent at 90°; The coiled pipe 43 includes a first pipe section 431, a second pipe section 432, a third pipe section 433, and a fourth pipe section 434; Among them, the first pipe section 431, the second pipe section 432, the third pipe section 433, and the fourth pipe section 434 are all "U" - shaped pipes, so that the coiled pipe 43 is oval, so that the coiled pipe 43 can play a stirring effect during the process of rotating around the central axis of the tank body 1 and rotating around the central axis of the turntable 2; One end of the first pipe section 431 is coaxially and rotatably connected to the other end of the liquid inlet pipe 41, and one end of the fourth pipe section 434 is coaxially and rotatably connected to the other end of the liquid outlet pipe 42; there are multiple second pipe sections 432 and third pipe sections 433, and there is one more second pipe section 432 than the third pipe section 433. The multiple second pipe sections 432 and the multiple third pipe sections 433 are alternately distributed and rotatably connected in sequence, and together form a telescopic spiral pipe. The included angle between the adjacent second pipe section 432 and the third pipe section 433 is between 40° and 100°, so that the spiral pipe can play an effect of lifting materials similar to a "spiral blade" during the process of rotating around the central axis of the turntable 2.

[0030] The other end of the first pipe section 431 is coaxially and rotatably connected to the second pipe section 432 at the head end of the spiral pipe, and the other end of the fourth pipe section 434 is coaxially and rotatably connected to the second pipe section 432 at the tail end of the spiral pipe, so that the entire coiled pipe 43 can be telescopic and can be telescopic with the sliding of the liquid inlet pipe 41, realizing the adjustment of the length of the coiled pipe 43, so that the height of the coiled pipe 43 for heating and stirring materials can be adjusted according to the height of the materials, realizing the effective and efficient utilization of the heating capacity and the stirring capacity, and thus achieving the effect of energy saving.

[0031] Furthermore, it further includes an X-shaped telescopic frame formed by sequentially connecting multiple X-shaped frames 44. The X-shaped telescopic frame is installed on the spiral pipe and is used to telescope the spiral pipe. The X-shaped telescopic frame can rotate with the rotation of the coiled pipe 43 and plays a role in stirring.

[0032] As Figure 5 shown, the present invention provides an installation combination example of the X-shaped telescopic frame and the coiled pipe 43. In this example, the X-shaped frame 44 is formed by crossing and rotatably connecting a rod one 441 and a rod two 442, and multiple rod twos 442 are respectively rotatably sleeved on both ends of multiple second pipe sections 432.

[0033] During the process of the liquid inlet pipe 41 moving towards the bottom of the tank body 1, it drives the first pipe section 431 to move and rotate relative to the second pipe section 432 connected thereto. After the liquid inlet pipe 41 moves to contact the X-shaped telescopic frame, it pushes the X-shaped telescopic frame to contract, thereby driving the entire coiled pipe 43 to contract; after the coiled pipe 43 contracts, the liquid inlet pipe 41 moves in the reverse direction, and the coiled pipe 43 can be elongated.

[0034] Furthermore, the first cavity 31 penetrates through the top end of the cylinder body 3. A piston 10 is slidably installed in the first cavity 31. The piston 10 is rotatably connected to the liquid inlet pipe 41. A push rod 14 is slidably installed at the end of the piston 10 away from the liquid inlet pipe 41; A lifting device 11 is fixedly connected to the top end of the box body 51. The output end of the lifting device 11 is fixedly connected to a lifting ring 12. The lifting ring 12 is coaxially distributed with the tank body 1. A lifting rod 13 is installed inside the lifting ring 12. The lifting rod 13 can rotate circumferentially along the lifting ring 12. The lifting rod 13 penetrates and is slidably connected to a push rod 14, so that the push rod 14 can move up and down relative to the tank body 1 and can rotate around the central axis of the tank body 1.

[0035] The lifting device 11 drives the lifting ring 12 and the lifting rod 13 to move up and down, so that the push rod 14 moves and drives the piston 10 to slide up and down in the first cavity 31, thereby realizing the movement of the liquid inlet pipe 41 relative to the bottom of the tank body 1.

[0036] During the sliding of the piston 10, the push rod 14 slides horizontally relative to the piston 10 and the lifting rod 13; during the rotation of the cylinder body 3 around the central axis of the tank body 1, the lifting rod 13 is driven to rotate around the central axis of the tank body 1 through the piston 10 and the push rod 14.

[0037] It should be noted that the lifting device 11 is a power device capable of outputting linear motion in the prior art, such as an electric push rod, a hydraulic cylinder, a linear motor module, etc.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A synthesis device for preparing bismuth hydroxide, characterized in that, It includes a tank body (1), a turntable (2) and a pipe group (4); the turntable (2) is eccentrically arranged inside the tank body (1) and can rotate around the central axis of the tank body (1) and can also rotate around its own central axis; the pipe group (4) includes a liquid inlet pipe (41), a liquid outlet pipe (42) and a coiled pipe (43). Among them, one end of the liquid inlet pipe (41) penetrates through the turntable (2) from below the turntable (2), and one end of the liquid outlet pipe (42) penetrates through the turntable (2) from below the turntable (2). The coiled pipe (43) includes a "U"-shaped first pipe section (431) and a fourth pipe section (434), and one end of the first pipe section (431) is coaxially and rotatably connected to the other end of the liquid inlet pipe (41) which is bent at 90°, and one end of the fourth pipe section (434) is coaxially and rotatably connected to the other end of the liquid outlet pipe (42) which is bent at 90°. The coiled pipe (43) further includes a plurality of "U"-shaped second pipe sections (432) and a plurality of "U"-shaped third pipe sections (433), and there is one more second pipe section (432) than the third pipe section (433). The plurality of second pipe sections (432) and the plurality of third pipe sections (433) are alternately distributed and sequentially rotatably connected to jointly form a telescopic spiral-shaped pipe; the head end and the tail end of the telescopic spiral-shaped pipe are respectively coaxially and rotatably connected to the other end of the first pipe section (431) and the other end of the fourth pipe section (434). The liquid inlet pipe (41) is slidably connected to the turntable (2) and the cylinder body (3), the liquid outlet pipe (42) is fixedly connected to the cylinder body (3), and the other end of the liquid outlet pipe (42) extends to the bottom of the tank body (1).

2. The synthesis equipment for preparing bismuth hydroxide according to claim 1, characterized in that, An installation ring (101) is fixedly connected to the upper part of the inner circumferential surface of the tank body (1). An installation disc (6) is installed at the upper end of the installation ring (101). The installation disc (6) can rotate around the central axis of the tank body (1). The turntable (2) eccentrically penetrates and is rotatably connected to the installation disc (6). A first gear (21) is fixedly connected to the bottom end of the turntable (2). A toothed ring (22) is internally meshed with the first gear (21), and the toothed ring (22) is coaxially fixed to the lower end of the installation ring (101).

3. The synthesis equipment for preparing bismuth hydroxide according to claim 2, wherein, A cylinder body (3) is rotatably sleeved on the outer circumferential surface of the turntable (2) above the installation disc (6). The cylinder body (3) has a first cavity (31) and a second cavity (32) which are spaced apart up and down. The liquid inlet pipe (41) extends into the first cavity (31), and the liquid outlet pipe (42) extends into the second cavity (32).

4. A synthesis device for preparing bismuth hydroxide according to claim 3, characterized in that, A ring-shaped box body (51) is coaxially and fixedly connected to the upper end of the tank body (1). The inner circumferential surface of the box body (51) is open, and a partition frame (52) is coaxially and rotatably installed between the upper and lower inner wall surfaces. The partition frame (52) divides the inner cavity of the box body (51) into two non-communicating upper and lower first water chambers (511) and second water chambers (512). The first water chamber (511) is communicated with the first cavity (31), and the second water chamber (512) is communicated with the second cavity (32).

5. A synthesis device for preparing bismuth hydroxide according to claim 4, characterized in that, A first connecting pipe (513) and a second connecting pipe (514) which are respectively communicated with the first water chamber (511) and the second water chamber (512) are fixedly connected to the outer circumferential surface of the box body (51).

6. The synthetic equipment for preparing bismuth hydroxide according to claim 5, characterized in that, The included angle between the adjacent second pipe section (432) and the third pipe section (433) is between 40° and 100°.

7. The synthetic equipment for preparing bismuth hydroxide according to claim 6, characterized in that, It further includes an X-shaped telescopic frame formed by sequentially connecting multiple X-shaped frames (44). The X-shaped telescopic frame is installed on the spiral pipeline and is used to expand and contract the spiral pipeline.

8. A synthesis device for preparing bismuth hydroxide according to claim 7, characterized in that, A piston (10) is slidably installed in the first cavity (31). The piston (10) is rotatably connected to the liquid inlet pipe (41). A push rod (14) is slidably installed at one end of the piston (10) away from the liquid inlet pipe (41).

9. A synthesis device for preparing bismuth hydroxide according to claim 8, characterized in that, It further includes a lifting device (11). The output end of the lifting device (11) is fixedly connected to a lifting ring (12). A lifting rod (13) is installed inside the lifting ring (12). The lifting rod (13) can rotate circumferentially along the lifting ring (12) and penetrates and is slidably connected to the push rod (14).

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