Preparation process and manufacturing equipment of chloroplatinic acid

Abstract

The invention relates to the technical field of chloroplatinic acid preparation, in particular to a chloroplatinic acid preparation process and manufacturing equipment which comprises a base, a drying cylinder is fixedly connected to the outer wall of the top end of the base, an inner cylinder is fixedly connected to the inner wall of the drying cylinder, and a heating frame is fixedly connected to the inner wall of the bottom of the inner cylinder; a motor is installed on the outer wall of the bottom end of the heating frame, a base is fixedly connected to the outer wall of the top end of the heating frame, one end of an output shaft of the motor is connected with a screw through a coupler, a rotating rod is fixedly connected to the outer wall of the top end of the screw, and a discharging plate is fixedly connected to the outer wall of the top of the rotating rod. The linkage structure controls opening and closing of the exhaust holes, crystals needing to be dried are divided into two parts, in the lifting process of the lifting frame, the stirring rod and the rolling shaft stir and flatly spread the crystals in the base and the lifting frame correspondingly, it is guaranteed that the crystals are heated and dried evenly, the drying speed is high, the drying is more stable, and the preparation efficiency of chloroplatinic acid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chloroplatinic acid preparation, in particular to a preparation process and manufacturing equipment of chloroplatinic acid. Background Art

[0002] The conventional method for preparing chloroplatinic acid is to dissolve sponge platinum in aqua regia, add hydrochloric acid to remove excess nitric acid, then distill and concentrate the platinum-containing hydrochloric acid solution to obtain a concentrated solution, and finally crystallize the obtained concentrated solution in a crystallization furnace to obtain chloroplatinic acid. The chloroplatinic acid crystals also need to be dried by a drying device to obtain a pure chloroplatinic acid product.

[0003] Since chloroplatinic acid crystals are sensitive to heat, excessively high temperatures may cause decomposition, so vacuum dryers are usually used for drying during the drying process. Vacuum dryers can lower the boiling point of water, achieve drying at a lower temperature, and avoid damage to the product by high temperature. During the vacuum drying process, the interior is continuously vacuumed by a vacuum pump, and the generated water vapor is extracted to prevent it from adhering to the outer wall of the chloroplatinic acid crystals again. However, the continuous vacuum treatment to exhaust water vapor will take away heat, causing the temperature to drop and affecting the drying of the chloroplatinic acid crystals. In addition, the different thicknesses of the chloroplatinic acid crystal agglomerates lead to uneven heating, which is also likely to affect the drying speed and reduce the preparation efficiency of chloroplatinic acid. Summary of the invention

[0004] The object of the present invention is to provide a preparation process and manufacturing equipment of chloroplatinic acid to solve the problems raised in the above-mentioned background technology.

[0005] The technical solution of the present invention is: a manufacturing equipment of chloroplatinic acid, comprising a base, the top outer wall of the base is fixedly connected with a drying cylinder, the inner wall of the drying cylinder is fixedly connected with an inner cylinder, the bottom inner wall of the inner cylinder is fixedly connected with a heating frame, the bottom outer wall of the heating frame is installed with a motor, the top outer wall of the heating frame is fixedly connected with a base, one end of the motor output shaft is connected with a screw through a coupling, the top outer wall of the screw is fixedly connected with a rotating rod, the top outer wall of the rotating rod is fixedly connected with a blanking plate, the outer wall of the screw is connected with a lifting frame through a thread, the two side outer walls of the top of the lifting frame are fixedly connected with a U-shaped frame, a sliding groove is provided on one side outer wall of the bottom end of the U-shaped frame, the inner wall of the sliding groove is slidably connected with a sliding rod, the bottom outer wall of the sliding rod is fixedly connected with a shielding frame, and the bottom outer wall of the inner cylinder is provided with a plurality of exhaust holes. The outer wall of one side of the inner wall of the bottom of the U-shaped frame is fixedly connected with a magnetic block, the top outer wall of the inner cylinder is fixedly connected with a top plate, the bottom outer wall of the blanking plate is fixedly connected with a fixed tube, the outer wall of the fixed tube is slidably connected with a sliding tube, and the bottom outer wall of the sliding tube is fixedly connected with an annular plate, the bottom outer wall of the lifting frame is provided with a plurality of filtering holes, the bottom inner wall of the lifting frame is provided with an annular slide rail, the annular plate is slidably connected to the inner wall of the annular slide rail, the outer walls of both sides of the annular plate are provided with mounting grooves, the inner wall of the mounting groove is provided with a circular rod, the outer wall of the circular rod is slidably connected with a roller, a one-way bearing is installed on one side outer wall of the roller, the outer walls of both sides of the bottom of the screw are fixedly connected with stirring rods, the outer walls of both sides of the inner cylinder are fixedly connected with upper limit blocks and lower limit blocks in sequence from top to bottom, and a vacuum pump is installed on one side inner wall of the bottom of the drying cylinder.

[0006] Preferably, the outer wall of the bottom of the inner cylinder is fixedly connected to the outer shell, the input end of the vacuum pump is plugged with a vacuum tube, the outer wall of the vacuum tube is installed with a condenser, an exhaust hole is opened on the outer wall of one side of the bottom end of the outer shell, the vacuum tube is plugged into the inner wall of the exhaust hole, the inner wall of the sliding rod is provided with an iron sheet, the iron sheet is adapted to the size of the magnetic block, the exhaust holes are distributed in a circular array, the outer wall of the shielding frame is provided with ventilation holes, the spacing of the ventilation holes is adapted to the size of the exhaust holes, and the shielding frame is adapted to the size of the upper limit block and the lower limit block.

[0007] Preferably, an annular protrusion is provided on the inner wall of the bottom of the lifting frame, the circular rod is slidably connected to the outer wall of the annular protrusion, the roller is slidably connected to the inner wall of the bottom of the lifting frame, connecting holes are provided on the outer walls on both sides of the top of the top plate, the U-shaped frame is slidably connected to the inner wall of the connecting hole, and the shielding frame is slidably connected to the outer wall of the inner cylinder.

[0008] Preferably, rectangular holes are provided on both side outer walls of the top of the shell, the sliding rod is slidably connected to the inner wall of the rectangular hole, a conical groove is provided on the top outer wall of the base, the base is located below the lifting frame, the stirring rod is arranged in an arc shape, and the stirring rod is slidably connected to the inner wall of the conical groove.

[0009] Preferably, a heating plate is installed on the inner wall of the heating rack, and the size of the heating plate is adapted to the base. A discharge box is fixedly connected to the top inner wall of the drying cylinder, and the discharge box is arranged in a cylindrical shape. A feed pipe is arranged on the top outer wall of the discharge box, and a discharge pipe is arranged on the bottom outer wall of the base. Solenoid valves are installed on the inner walls of the feed pipe and the discharge pipe.

[0010] Preferably, the top outer wall of the rotating rod is fixedly connected with a discharge plate, the discharge plate is slidably connected to the bottom inner wall of the discharge box, the top outer wall of the discharge plate is fixedly connected with a conical plate, a discharge hole is opened on one side outer wall of the discharge plate, and the discharge plate is located above the lifting frame.

[0011] Preferably, limiting protrusions are provided on the outer walls on both sides of the sliding tube, and limiting grooves are provided on the outer walls on both sides of the fixed tube, the sizes of the limiting protrusions and the limiting grooves are adapted to each other, the top inner wall of the inner tube is fixedly connected to a limiting rod, the outer wall of the lifting frame is provided with an arc groove, and the limiting rod is slidably connected to the inner wall of the arc groove.

[0012] According to any one of the above-mentioned preparation processes of chloroplatinic acid, the preparation process comprises the following steps:

[0013] 1. Prepare the raw material high-purity sponge platinum, pre-treat it, and clean and remove surface impurities;

[0014] 2. First, high-purity sponge platinum is dissolved in aqua regia, and the dissolution temperature is controlled at 50-60°C. Then, sodium hydroxide solution is added to the chloroplatinic acid solution obtained by dissolving, and the pH value of the solution is adjusted to alkaline. The temperature is maintained at 40-50°C, and hydrazine hydrate is added for reduction treatment to generate highly active platinum powder. The solution after the reaction is filtered to remove impurities;

[0015] 3. Heat and concentrate the filtrate. During the concentration process, add appropriate amounts of hydrochloric acid and hydrogen peroxide to prevent the reduction of tetravalent platinum. After concentration to a certain degree, cool to room temperature, and chloroplatinic acid begins to crystallize.

[0016] Fourth, the obtained chloroplatinic acid crystals are placed in the manufacturing equipment for drying chloroplatinic acid crystals described in claims 1-7, and the temperature and time are controlled to dry them to obtain pure chloroplatinic acid finished products.

[0017] The present invention provides a preparation process and manufacturing equipment of chloroplatinic acid by improvement, which has the following improvements and advantages compared with the prior art:

[0018] First, the present invention is provided with a drying cylinder, an inner cylinder, a shielding frame, a U-shaped frame, a lifting frame, a screw and a roller. The chloroplatinic acid crystals to be dried are divided into two parts inside the inner cylinder. The smaller crystals fall on the base, and the larger crystals are rolled and crushed by the roller and appropriately broken and spread on the bottom of the lifting frame. When the lifting frame rises and closes the exhaust hole, the water vapor in the dryer cannot be discharged, resulting in an increase in internal pressure. The increase in pressure will appropriately increase the boiling point of water, thereby reducing the heat required for water evaporation and reducing sensible heat and latent heat losses. The temperature in the dryer can be maintained at a high and stable level. When the lifting frame descends, the exhaust hole is opened at the first time, and the water vapor is quickly discharged to reduce the pressure in the drying structure. At this time, there will be a certain amount of heat loss, but due to the rapid discharge of water vapor, the drying efficiency is improved, which is still helpful to maintain the stability of the drying temperature as a whole. The linkage structure controls the opening and closing of the exhaust hole, and the crystals to be dried are divided into two parts. During the lifting process of the lifting frame, the stirring rod and the roller also stir and spread the crystals in the base and the lifting frame respectively to ensure uniform heating and drying. The drying speed is fast and more stable, thereby improving the preparation efficiency of chloroplatinic acid.

[0019] Second, the present invention is provided with a screw, a roller, a one-way bearing and a round rod. When the roller rotates clockwise, it can roll normally, crush the chloroplatinic acid crystals to make them flat and evenly heated to increase the drying effect, and also appropriately damage the agglomerated large-sized chloroplatinic acid crystals. When the roller rotates counterclockwise, it remains stationary to increase the friction force, thereby pushing the dried and flat chloroplatinic acid crystals to be filtered again so that the crystals that meet the filter hole size fall onto the base, and also flipping the crystals to prevent agglomeration, thereby further improving the filtering and drying effect of the chloroplatinic acid crystals;

[0020] Thirdly, the present invention is provided with a discharge box, a conical plate, a discharge plate and a discharge hole. When the screw drives the rotating rod to rotate, the discharge plate and the conical plate rotate accordingly, thereby preventing chloroplatinic acid crystals from solidifying and clogging inside the discharge box. At the same time, the chloroplatinic acid crystals fall evenly on the lifting frame through the rotating discharge hole, thereby ensuring uniform discharge and further improving the drying efficiency of the chloroplatinic acid crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the inner cylinder connection structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the screw connection structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the base connection structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the top plate and the bottom plate structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the lifting frame connection structure of the present invention;

[0028] Figure 7 It is an exploded schematic diagram of the annular plate connection structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the shielding frame connection structure of the present invention.

[0030] Description of reference numerals:

[0031] 1. Base; 2. Drying cylinder; 3. Outer shell; 4. Condenser; 5. Vacuum pump; 6. Inner cylinder; 7. Motor; 8. Heating rack; 9. Base; 10. Shielding rack; 11. Screw; 12. Lifting rack; 13. Conical plate; 14. Sliding rod; 15. U-shaped frame; 16. Rotating rod; 17. Unloading box; 18. Exhaust hole; 19. Upper limit block; 20. Lower limit block; 21. Top plate; 22. Unloading plate; 23. Magnetic block; 24. Stirring rod; 25. Unloading hole; 26. Fixed tube; 27. Sliding tube; 28. Filter hole; 29. ​​Ring plate; 30. Limit rod; 31. Roller; 32. Round rod; 33. One-way bearing. DETAILED DESCRIPTION

[0032] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present invention provides a preparation process and manufacturing equipment of chloroplatinic acid by improvement. The technical solution of the present invention is:

[0034] like Figure 1-Figure 8As shown, a manufacturing device for chloroplatinic acid includes a base 1, a drying cylinder 2 is fixedly connected to the top outer wall of the base 1, an inner cylinder 6 is fixedly connected to the inner wall of the drying cylinder 2, a heating frame 8 is fixedly connected to the bottom inner wall of the inner cylinder 6, a motor 7 is installed on the bottom outer wall of the heating frame 8, a base 9 is fixedly connected to the top outer wall of the heating frame 8, one end of the output shaft of the motor 7 is connected to a screw 11 through a coupling, a rotating rod 16 is fixedly connected to the top outer wall of the screw 11, a blanking plate 22 is fixedly connected to the top outer wall of the rotating rod 16, a lifting frame 12 is connected to the outer wall of the screw 11 through a thread, a U-shaped frame 15 is fixedly connected to the outer walls of both sides of the top of the lifting frame 12, a slide groove is provided on the outer wall of one side of the bottom end of the U-shaped frame 15, a sliding rod 14 is slidably connected to the inner wall of the slide groove, a shielding frame 10 is fixedly connected to the bottom outer wall of the sliding rod 14, a plurality of exhaust holes 18 are provided on the bottom outer wall of the inner cylinder 6, and a plurality of exhaust holes 18 are provided on the bottom of the U-shaped frame 15 The outer wall of one side of the inner wall is fixedly connected with a magnetic block 23, the top outer wall of the inner cylinder 6 is fixedly connected with a top plate 21, the bottom outer wall of the blanking plate 22 is fixedly connected with a fixed tube 26, the outer wall of the fixed tube 26 is slidably connected with a sliding tube 27, the bottom outer wall of the sliding tube 27 is fixedly connected with an annular plate 29, the bottom outer wall of the lifting frame 12 is provided with a plurality of filtering holes 28, the bottom inner wall of the lifting frame 12 is provided with an annular slide rail, the annular plate 29 is slidably connected to the inner wall of the annular slide rail, the outer walls of both sides of the annular plate 29 are provided with mounting grooves, the inner wall of the mounting groove is provided with a circular rod 32, the outer wall of the circular rod 32 is slidably connected with a roller 31, and a one-way bearing 33 is installed on one side outer wall of the roller 31, the outer walls of both sides of the bottom of the screw 11 are fixedly connected with stirring rods 24, the outer walls of both sides of the inner cylinder 6 are fixedly connected with upper limit blocks 19 and lower limit blocks 20 from top to bottom, and a vacuum pump 5 is installed on one side inner wall of the bottom of the drying cylinder 2.

[0035] Furthermore, the outer wall of the bottom of the inner cylinder 6 is fixedly connected to the outer shell 3, the input end of the vacuum pump 5 is plugged with a vacuum tube, and the outer wall of the vacuum tube is installed with a condenser 4. An exhaust hole is opened on the outer wall of one side of the bottom end of the outer shell 3, and the vacuum tube is plugged into the inner wall of the exhaust hole. The inner wall of the sliding rod 14 is provided with an iron sheet, and the size of the iron sheet is adapted to the size of the magnetic block 23. The exhaust holes 18 are distributed in a circular array, and the outer wall of the shielding frame 10 is provided with ventilation holes. The spacing of the ventilation holes is adapted to the size of the exhaust holes 18. The shielding frame 10 is adapted to the size of the upper limit block 19 and the lower limit block 20. An annular protrusion is provided on the bottom inner wall of the lifting frame 12, and the circular rod 32 is slidably connected to the outer wall of the annular protrusion. The roller 31 is slidably connected to the inner wall of the bottom of the lifting frame 12. The outer walls on both sides of the top of the top plate 21 are provided with connecting holes, the U-shaped frame 15 is slidably connected to the inner wall of the connecting hole, and the shielding frame 10 is slidably connected to the outer wall of the inner cylinder 6.

[0036] Furthermore, rectangular holes are opened on both sides of the outer walls at the top of the shell 3, the sliding rod 14 is slidably connected to the inner wall of the rectangular hole, a conical groove is opened on the top outer wall of the base 9, the base 9 is located below the lifting frame 12, the stirring rod 24 is arranged in an arc shape, and the stirring rod 24 is slidably connected to the inner wall of the conical groove.

[0037] Furthermore, a heating plate is installed on the inner wall of the heating frame 8, and the size of the heating plate is adapted to the base 9. A material discharge box 17 is fixedly connected to the top inner wall of the drying cylinder 2. The material discharge box 17 is cylindrical, and a feed pipe is arranged on the top outer wall of the material discharge box 17. A discharge pipe is arranged on the bottom outer wall of the base 9. Solenoid valves are installed on the inner walls of the feed pipe and the discharge pipe. A material discharge plate 22 is fixedly connected to the top outer wall of the rotating rod 16, and the material discharge plate 22 is slidably connected to the bottom inner wall of the material discharge box 17. The top outer wall of the material plate 22 is fixedly connected with the conical plate 13, and the outer wall on one side of the material plate 22 is provided with a material discharge hole 25. The material discharge plate 22 is located above the lifting frame 12. The outer walls on both sides of the sliding tube 27 are provided with limiting protrusions, and the outer walls on both sides of the fixed tube 26 are provided with limiting grooves. The sizes of the limiting protrusions and the limiting grooves are adapted. The top inner wall of the inner tube 6 is fixedly connected with a limiting rod 30, and the outer wall of the lifting frame 12 is provided with an arc groove, and the limiting rod 30 is slidably connected to the inner wall of the arc groove.

[0038] According to any one of the above-mentioned preparation processes of chloroplatinic acid, the preparation process comprises the following steps:

[0039] 1. Prepare the raw material high-purity sponge platinum, pre-treat it, and clean and remove surface impurities;

[0040] 2. First, high-purity sponge platinum is dissolved in aqua regia, and the dissolution temperature is controlled at 50-60°C. Then, sodium hydroxide solution is added to the chloroplatinic acid solution obtained by dissolving, and the pH value of the solution is adjusted to alkaline. The temperature is maintained at 40-50°C, and hydrazine hydrate is added for reduction treatment to generate highly active platinum powder. The solution after the reaction is filtered to remove impurities;

[0041] 3. Heat and concentrate the filtrate. During the concentration process, add appropriate amounts of hydrochloric acid and hydrogen peroxide to prevent the reduction of tetravalent platinum. After concentration to a certain degree, cool to room temperature, and chloroplatinic acid begins to crystallize.

[0042] Fourth, the obtained chloroplatinic acid crystals are placed in the manufacturing equipment for drying chloroplatinic acid crystals described in claims 1-7, and the temperature and time are controlled to dry them to obtain pure chloroplatinic acid finished products.

[0043] Working principle: When drying chloroplatinic acid crystals, the chloroplatinic acid crystals to be dried are placed in the unloading box 17, and the chloroplatinic acid crystals fall into the lifting frame 12 through the unloading holes 25 on the unloading plate 22. The filter holes 28 arranged at the bottom of the lifting frame 12 filter the chloroplatinic acid crystals of different sizes, and the crystals that meet the size fall into the conical groove of the base 9, and the crystals that do not meet the size remain in the lifting frame 12. The motor 7 is started to make it rise and fall periodically. When the screw 11 drives the lifting frame 12 to rise, the U-shaped frame 15 rises accordingly, and at the same time, the sliding rod 14 and the shielding frame 10 are attracted by the magnetic block 23 to rise, and the shielding frame 10 is shielded. The blocking frame 10 blocks the exhaust hole 18 on the inner cylinder 6, and the heating frame 8 at the bottom of the base 9 heats the inner cylinder 6 and the base 9, so that the moisture of the chloroplatinic acid crystals is evaporated to form water vapor. The water vapor will not be discharged for the first time to ensure that the internal heat of the inner cylinder 6 is stable and at a high level. When the screw 11 rotates, it will also drive the rotating rod 16 and the blanking plate 22 to rotate. The blanking plate 22 drives the sliding tube 27 to rotate through the fixed tube 26 at the bottom, thereby driving the annular plate 29 to rotate at the bottom of the lifting frame 12, and the rollers 31 movably connected on the circular rods 32 on both sides of the lifting frame 12 also roll to the large size on the filter hole 28. The agglomerated chloroplatinic acid crystals are crushed, and some of the chloroplatinic acid crystals are broken and fall directly onto the base 9 through the filter hole 28. Some of the crystals are rolled and crushed to cooperate with the moisture in the crystals to make them flat on the bottom of the lifting frame 12 because the outer wall of the roller 31 is made of soft material. The chloroplatinic acid crystals are evenly heated in the lifting frame 12 and the base 9 for drying. When the screw 11 rotates in the opposite direction and the lifting frame 12 descends, the U-shaped frame 15 drives the sliding rod 14 and the shielding frame 10 to descend at the first time, thereby exposing the exhaust hole 18 on the inner tube 6, and quickly exhausting the water vapor inside the inner tube 6. The vacuum pump 5 performs vacuum treatment and cooperates with The condenser 4 absorbs water vapor quickly. When the annular plate 29 rotates in the opposite direction, the roller 31 on the circular rod 32 is kept stationary by the one-way bearing 33, thereby increasing the friction between the roller 31 and the flat crystals. The crystals are pushed to flip and filter again. The above steps are repeated until all the crystals fall into the base 9 and are dried. The chloroplatinic acid crystals begin to be divided into two parts, which are dried on the lifting frame 12 and the base 9 respectively. When the screw 11 rotates, it also drives the roller 31 and the stirring rod 24 to flatten and stir the crystals on the lifting frame 12 and the base 9 respectively, so that the crystals are evenly distributed and heated to increase the drying effect.

[0044] When the lifting frame 12 rises, the sliding rod 14 adsorbed by the magnetic block 23 also drives the shielding frame 10 to rise at the first time, thereby shielding the exhaust hole 18, avoiding the discharge of water vapor to ensure the stability of the drying temperature of the inner cylinder 6, and also preventing the water vapor discharged from the previous batch of drying from being absorbed back into the inner cylinder 6 to affect the drying effect of the chloroplatinic acid crystals. When the shielding frame 10 rises to block the exhaust hole 18, it is limited by the upper limit block 19. Then, the force of the U-shaped frame 15 rising is greater than the magnetic force, and the sliding rod 14 slides inside the U-shaped frame 15. When the lifting frame 12 descends, the shielding frame 10 is first descended with the sliding rod 14 to ensure the stable and rapid discharge of water vapor. Although there will be a certain amount of heat loss at this time, due to the rapid discharge of water vapor, the drying efficiency is improved, which helps to maintain the stability of the drying temperature as a whole. When the shielding frame 10 descends to expose the exhaust hole 18, it will be limited by the lower limit block 20. At this time, the force of the U-shaped frame 15 descending is greater than the magnetic force, so that the sliding rod 14 slides at the bottom of the U-shaped frame 15.

[0045] The roller 31 is movably connected to the circular rod 32 and is equipped with a one-way bearing 33, so that the roller 31 can roll normally when rotating clockwise, crushing the chloroplatinic acid crystals to make them flat and evenly heated to increase the drying effect, and also appropriately damaging the agglomerated large-sized chloroplatinic acid crystals. When rotating counterclockwise, the roller 31 remains stationary to increase the friction, thereby pushing the dried chloroplatinic acid crystals to be filtered again and making them fall on the base 9. The agglomerated chloroplatinic acid crystals are appropriately crushed in the lifting frame 12. The stirring rod 24 set on the screw 11 is also set in an arc shape. When rotating in the conical groove of the base 9, it only pushes the chloroplatinic acid crystals to ensure uniform heating, and will not stir and further crush them, thereby avoiding excessive crushing of the chloroplatinic acid crystals to be too small in size, which affects the physical and chemical properties of the product.

[0046] The fixed tube 26 and the sliding tube 27 are connected by a limiting protrusion to ensure that they can slide and retract while rotating together to avoid movement conflict. The lifting frame 12 is limited by the limiting rod 30, so that it can be stably lifted and lowered under the action of the screw 11. A discharge box 17 is arranged on the top of the drying cylinder 2, and a discharge plate 22 installed on the outer wall of the rotating rod 16 is arranged at the bottom of the discharge box 17. When the screw 11 drives the rotating rod 16 to rotate, the discharge plate 22 and the conical plate 13 rotate accordingly, thereby preventing chloroplatinic acid crystals from solidifying and clogging inside the discharge box 17. At the same time, the chloroplatinic acid crystals fall evenly on the lifting frame 12 through the rotating discharge hole 25, ensuring uniform discharge and further improving the drying efficiency of the chloroplatinic acid crystals.

[0047] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A manufacturing device for chloroplatinic acid, comprising a base (1), characterized in that: The top outer wall of the base (1) is fixedly connected to a drying cylinder (2), the inner wall of the drying cylinder (2) is fixedly connected to an inner cylinder (6), the bottom inner wall of the inner cylinder (6) is fixedly connected to a heating rack (8), the bottom outer wall of the heating rack (8) is equipped with a motor (7), the top outer wall of the heating rack (8) is fixedly connected to a base (9), one end of the output shaft of the motor (7) is connected to a screw (11) via a coupling, the top outer wall of the screw (11) is fixedly connected to a rotating rod (16), the top of the rotating rod (16) is fixedly connected to the outer wall of the inner cylinder (2), and the bottom inner wall of the inner cylinder (6) is fixedly connected to a heating rack (8). The outer wall is fixedly connected with a blanking plate (22), the outer wall of the screw rod (11) is connected with a lifting frame (12) by threading, the outer walls on both sides of the top of the lifting frame (12) are fixedly connected with a U-shaped frame (15), a sliding groove is provided on the outer wall of one side of the bottom end of the U-shaped frame (15), a sliding rod (14) is slidably connected to the inner wall of the sliding groove, and a shielding frame (10) is fixedly connected to the outer wall of the bottom end of the sliding rod (14), a plurality of exhaust holes (18) are provided on the outer wall of the bottom of the inner cylinder (6), and the inner wall and outer wall of one side of the bottom of the U-shaped frame (15) are fixedly connected. The inner tube (6) is fixedly connected with a magnetic block (23), the top outer wall of the inner tube (6) is fixedly connected with a top plate (21), the bottom outer wall of the blanking plate (22) is fixedly connected with a fixed tube (26), the outer wall of the fixed tube (26) is slidably connected with a sliding tube (27), the bottom outer wall of the sliding tube (27) is fixedly connected with an annular plate (29), the bottom outer wall of the lifting frame (12) is provided with a plurality of filtering holes (28), the bottom inner wall of the lifting frame (12) is provided with an annular slide rail, and the annular plate (29) is slidably connected to the inner wall of the annular slide rail. The outer walls of both sides of the annular plate (29) are provided with mounting grooves, the inner walls of the mounting grooves are provided with round rods (32), the outer walls of the round rods (32) are movably connected with rollers (31), one side outer wall of the rollers (31) is provided with a one-way bearing (33), the outer walls of both sides of the bottom of the screw (11) are fixedly connected with stirring rods (24), the outer walls of both sides of the inner cylinder (6) are fixedly connected with upper limit blocks (19) and lower limit blocks (20) in sequence from top to bottom, and a vacuum pump (5) is provided on one side inner wall of the bottom of the drying cylinder (2).

2. A manufacturing equipment for chloroplatinic acid according to claim 1, characterized in that: The outer wall at the bottom of the inner cylinder (6) is fixedly connected to the outer shell (3); the input end of the vacuum pump (5) is plugged with a vacuum tube; the outer wall of the vacuum tube is installed with a condenser (4); an exhaust hole is provided on the outer wall of one side of the bottom end of the outer shell (3); the vacuum tube is plugged into the inner wall of the exhaust hole; an iron sheet is provided on the inner wall of the sliding rod (14); the size of the iron sheet matches that of the magnetic block (23); the exhaust holes (18) are distributed in a circular array; the outer wall of the shielding frame (10) is provided with ventilation holes; the spacing of the ventilation holes matches the size of the exhaust holes (18); the shielding frame (10) matches the size of the upper limit block (19) and the lower limit block (20).

3. A manufacturing equipment for chloroplatinic acid according to claim 1, characterized in that: The bottom inner wall of the lifting frame (12) is provided with an annular protrusion, the circular rod (32) is slidably connected to the outer wall of the annular protrusion, the roller (31) is slidably connected to the bottom inner wall of the lifting frame (12), the outer walls on both sides of the top of the top plate (21) are provided with connecting holes, the U-shaped frame (15) is slidably connected to the inner walls of the connecting holes, and the shielding frame (10) is slidably connected to the outer wall of the inner cylinder (6).

4. A manufacturing equipment for chloroplatinic acid according to claim 2, characterized in that: Rectangular holes are provided on the outer walls on both sides of the top of the shell (3); the sliding rod (14) is slidably connected to the inner wall of the rectangular hole; a conical groove is provided on the outer wall of the top of the base (9); the base (9) is located below the lifting frame (12); the stirring rod (24) is arranged in an arc shape; and the stirring rod (24) is slidably connected to the inner wall of the conical groove.

5. The manufacturing equipment of chloroplatinic acid according to claim 1, characterized in that: A heating plate is installed on the inner wall of the heating frame (8), and the size of the heating plate is adapted to the base (9). A discharge box (17) is fixedly connected to the top inner wall of the drying cylinder (2), and the discharge box (17) is arranged in a cylindrical shape. A feed pipe is arranged on the top outer wall of the discharge box (17), and a discharge pipe is arranged on the bottom outer wall of the base (9). Solenoid valves are installed on the inner walls of the feed pipe and the discharge pipe.

6. The manufacturing equipment of chloroplatinic acid according to claim 5, characterized in that: The top outer wall of the rotating rod (16) is fixedly connected with a material removal plate (22), and the material removal plate (22) is slidably connected to the bottom inner wall of the material removal box (17). The top outer wall of the material removal plate (22) is fixedly connected with a conical plate (13), and a material removal hole (25) is provided on one side outer wall of the material removal plate (22). The material removal plate (22) is located above the lifting frame (12).

7. The manufacturing equipment of chloroplatinic acid according to claim 1, characterized in that: The outer walls of both sides of the sliding tube (27) are provided with limiting protrusions, and the outer walls of both sides of the fixed tube (26) are provided with limiting grooves, the sizes of the limiting protrusions and the limiting grooves are adapted to each other, the top inner wall of the inner tube (6) is fixedly connected to a limiting rod (30), the outer wall of the lifting frame (12) is provided with an arc groove, and the limiting rod (30) is slidably connected to the inner wall of the arc groove.

8. The process for preparing chloroplatinic acid according to any one of claims 1 to 7, characterized in that: The preparation process comprises the following steps:

1. Prepare the raw material high-purity sponge platinum, pre-treat it, and clean and remove surface impurities; 2. First, high-purity sponge platinum is dissolved in aqua regia, and the dissolution temperature is controlled at 50-60°C. Then, sodium hydroxide solution is added to the chloroplatinic acid solution obtained by dissolving, and the pH value of the solution is adjusted to alkaline. The temperature is maintained at 40-50°C, and hydrazine hydrate is added for reduction treatment to generate highly active platinum powder. The solution after the reaction is filtered to remove impurities; 3. Heat and concentrate the filtrate. During the concentration process, add appropriate amounts of hydrochloric acid and hydrogen peroxide to prevent the reduction of tetravalent platinum. After concentration to a certain degree, cool to room temperature, and chloroplatinic acid begins to crystallize. Fourth, the obtained chloroplatinic acid crystals are placed in the manufacturing equipment for drying chloroplatinic acid crystals described in claims 1-7, and the temperature and time are controlled to dry them to obtain pure chloroplatinic acid finished products.

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