Environmentally friendly bimetallic passivator and reaction kettle for production

Abstract

The present invention relates to the field of petroleum additives, and particularly to an environment-friendly bimetallic passivator and a reaction kettle for production. The environment-friendly bimetallic passivator comprises components in the following mass percentages: 5-10 wt% of antimony trioxide, 5-10 wt% of cerium carbonate, 1-8 wt% of citric acid, 5-10 wt% of hydrogen peroxide, 5-10 wt% of ammonium persulfate, 5-10 wt% of diammonium hydrogen phosphate, 1-5 wt% of triethylamine, 1-2 wt% of monoethanolamine, 1-2 wt% of weather resistance modifier, 0.5-1 wt% of corrosion inhibitor, and 50-60 wt% of demineralized water; the weather resistance modifier is sodium silicate, and the corrosion inhibitor is hydroxyethylidene diphosphonic acid. By filling a weather resistance improver and a corrosion inhibitor in the passivator, the present invention improves the mechanical strength and wear resistance of the coating, prolongs the service life, and simultaneously has excellent scale inhibition effect and good biodegradability.

Description

Technical Field

[0001] The present invention relates to the field of petroleum additives, and particularly to an environment-friendly bimetallic passivator and a reaction kettle for production. Background Art

[0002] The environment-friendly bimetallic passivator is a chemical used for metal surface treatment, aiming to reduce environmental impact and provide excellent anti-corrosion protection. It forms a stable oxide film or chemical reaction layer on the surface of steel and other metals to prevent oxygen, water, and harmful chemicals from contacting the metal, thereby preventing corrosion and extending the service life of metal products. Such passivators usually contain two or more metal compounds and can generate a protective barrier on the metal surface. The existing bimetallic passivators lack corrosion inhibitors and weather resistance improvers, resulting in the inability to obtain a uniform and stable protective layer on the metal surface. Insufficient local stability makes these areas more vulnerable to corrosive media, thus reducing the overall protection effect. Moreover, physical and chemical changes are prone to occur under high-temperature conditions, and temperature fluctuations can cause uneven expansion and contraction of the coating, resulting in cracks or blisters. Summary of the Invention

[0003] In order to overcome the disadvantages mentioned in the above background art, the present invention provides an environment-friendly bimetallic passivator and a reaction kettle for production.

[0004] The technical solution is as follows: The environment-friendly bimetallic passivator includes the following components by mass percentage:

[0005] 5 - 10 wt% of antimony trioxide, 5 - 10 wt% of cerium carbonate, 1 - 8 wt% of citric acid, 5 - 10 wt% of hydrogen peroxide, 5 - 10 wt% of ammonium persulfate, 5 - 10 wt% of ammonium dihydrogen phosphate, 1 - 5 wt% of triethylamine, 1 - 2 wt% of monoethanolamine, 1 - 2 wt% of weather resistance modifier, 0.5 - 1 wt% of corrosion inhibitor, and 50 - 60 wt% of demineralized water;

[0006] The above weather resistance modifier is sodium silicate, and the above corrosion inhibitor is hydroxyethylidene diphosphonic acid.

[0007] The reaction kettle for producing the environment-friendly bimetallic passivator includes:

[0008] A bracket;

[0009] A reaction tank, fixedly connected to the bracket, and a feeding pipe and a discharging pipe are fixedly connected and communicated with the top and bottom of the reaction tank respectively;

[0010] Two exhaust pipes, fixedly connected and communicated with the reaction tank, and a plugging piston is hermetically slidably connected in the exhaust pipes;

[0011] The first elastic members, there are two of them, respectively arranged between the adjacent exhaust pipes and the adjacent plug pistons;

[0012] A pressure sensor, arranged inside the reaction tank, for detecting the gas pressure inside the reaction tank;

[0013] A stirring assembly, arranged on the reaction tank, for stirring the materials inside the reaction tank;

[0014] A heating assembly, arranged on the reaction tank, for heating the materials inside the reaction tank.

[0015] As a preferred technical solution of the present invention, the stirring assembly includes:

[0016] A fixing frame, fixedly connected to the reaction tank;

[0017] A first motor, fixedly connected to the fixing frame;

[0018] A rotating shaft, rotatably and sealingly connected to the inside of the reaction tank, the output shaft of the first motor is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected with a stirring frame;

[0019] A transmission assembly, arranged on the reaction tank, for switching the opened exhaust pipes.

[0020] As a preferred technical solution of the present invention, the transmission assembly includes:

[0021] A rotating ring, rotatably connected to the fixing frame;

[0022] An extrusion ring, fixedly connected to the inside of the rotating ring, and both of the plug pistons are in contact with the extrusion ring;

[0023] A driving assembly, arranged on the fixing frame, for driving the rotating ring to rotate.

[0024] As a preferred technical solution of the present invention, the driving assembly includes:

[0025] A second motor, fixedly connected to the fixing frame;

[0026] A first gear, fixedly connected to the output shaft of the second motor;

[0027] A first toothed ring, fixedly connected to the rotating ring, and the first toothed ring meshes with the first gear.

[0028] As a preferred technical solution of the present invention, the heating assembly includes:

[0029] The heat exchange inner shell is hermetically and rotatably connected to the inside of the reaction tank, and the heat exchange inner shell and the reaction tank cooperate to form a heat exchange cavity. The reaction tank is fixedly connected with an intake pipe and an exhaust pipe that communicate with the heat exchange cavity;

[0030] Heat exchange plates, there are several of them, all fixedly connected to the heat exchange inner shell. The heat exchange plates are provided with inner cavities, and the inner cavities of all the heat exchange plates communicate with the heat exchange cavity;

[0031] A rotating assembly is arranged in the reaction tank and is used to drive the heat exchange inner shell to rotate.

[0032] As a preferred technical solution of the present invention, several of the heat exchange plates are circumferentially and evenly distributed on circular trajectories with different radii centered on the central axis of the heat exchange inner shell, and the heat exchange plates on circular trajectories with different radii are staggeredly distributed.

[0033] As a preferred technical solution of the present invention, the rotating assembly includes:

[0034] A second toothed ring is rotatably connected to the inside of the reaction tank, and the heat exchange inner shell is fixedly connected to the second toothed ring;

[0035] A second gear is rotatably connected to the inside of the reaction tank, and the second toothed ring meshes with the second gear;

[0036] A third gear is fixedly connected to the rotating shaft, and the third gear meshes with the second gear.

[0037] As a preferred technical solution of the present invention, it further includes:

[0038] A locking assembly is arranged on the reaction tank and is used to quickly lock the rotating shaft. The locking assembly includes:

[0039] There are several clamping blocks, all fixedly connected to the rotating shaft and located outside the reaction tank;

[0040] A limiting block is slidably connected to the reaction tank. The limiting block limits the rotating shaft through the clamping block, and a second elastic member is arranged between the limiting block and the reaction tank;

[0041] A pushing assembly is arranged on the limiting block and is used to push the limiting block to slide.

[0042] As a preferred technical solution of the present invention, the pushing assembly includes:

[0043] A rotating member is fixedly connected to the first gear, and half of the pitch circle circumference of the first toothed ring is an integer multiple of the pitch circle circumference of the first gear;

[0044] The pushing block is fixedly connected to the limiting block, and the rotating member is used to squeeze the pushing block.

[0045] The beneficial effects produced by the above technical solutions are as follows: 1. By filling the passivating agent with the weather resistance improver sodium silicate and the corrosion inhibitor hydroxyethane diphosphonic acid, the mechanical strength and wear resistance of the coating are improved, the service life is extended, and at the same time, it has excellent scale inhibition effect and good biodegradability.

[0046] 2. By automatically detecting the change in pressure in the reaction tank, when the pressure in the reaction tank rises, another exhaust pipe is automatically switched, so that the gas in the reaction tank is discharged along the other exhaust pipe, avoiding the situation of blockage of the exhaust pipe during long-term use, resulting in a sharp increase in the pressure in the reaction tank and affecting the preparation quality of the passivating agent.

[0047] 3. By several heat exchange plates, the heating area of the raw materials is increased. At the same time, the several heat exchange plates rotate in the opposite direction to the stirring frame and stir the materials, so that the raw materials in the reaction tank are subjected to staggered rotational forces, enabling the raw materials to react evenly and improving the reaction rate.

[0048] 4. When switching the exhaust pipe, the stirring and heating of the raw materials in the reaction tank are stopped. At the same time, by means of physical limitation, the rotating shaft is quickly stopped from rotating, inhibiting the reaction rate of the raw materials and reducing the generation rate of the gas in the reaction tank, so that the gas in the reaction tank is quickly discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0050] Figure 2 is a three-dimensional structure sectional view of the reaction tank of the present invention;

[0051] Figure 3 is a three-dimensional structure schematic diagram of the rotating ring and the extrusion ring of the present invention;

[0052] Figure 4 is a three-dimensional structure sectional view of the plugging piston of the present invention;

[0053] Figure 5 is a three-dimensional structure schematic diagram of the first gear and the first toothed ring of the present invention;

[0054] Figure 6 is a three-dimensional structure schematic diagram of the heat exchange inner shell and the heat exchange cavity of the present invention;

[0055] Figure 7 is a three-dimensional structure schematic diagram of the heat exchange plate of the present invention;

[0056] Figure 8 is a three-dimensional structure schematic diagram of the clamping block and the limiting block of the present invention.

[0057] In the attached drawing reference numerals: 1 - support, 2 - reaction tank, 3 - exhaust pipe, 4 - sealing piston, 5 - first elastic member, 21 - fixing frame, 22 - first motor, 23 - rotating shaft, 24 - stirring frame, 31 - rotating ring, 32 - extrusion ring, 33 - second motor, 34 - first gear, 35 - first toothed ring, 41 - heat exchange inner shell, 42 - heat exchange chamber, 43 - heat exchange plate, 44 - second toothed ring, 45 - second gear, 46 - third gear, 51 - clamping block, 52 - limiting block, 53 - second elastic member, 54 - rotating member, 55 - pushing block. Specific Embodiment

[0058] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0059] Existing bimetallic passivators lack corrosion inhibitors and weather resistance improvers, resulting in the inability to form a uniform and stable protective layer on the metal surface. This makes local areas more vulnerable to corrosive media, reducing the overall protection effect. In addition, under high-temperature conditions, the coating is prone to physical and chemical changes, and temperature fluctuations can also cause uneven expansion and contraction, resulting in cracks or blisters.

[0060] 5 - 10 wt% antimony trioxide, 5 - 10 wt% cerium carbonate, 1 - 8 wt% citric acid, 5 - 10 wt% hydrogen peroxide, 5 - 10 wt% ammonium persulfate, 5 - 10 wt% ammonium dihydrogen phosphate, 1 - 5 wt% triethylamine, 1 - 2 wt% monoethanolamine, 1 - 2 wt% weather resistance modifier, 0.5 - 1 wt% corrosion inhibitor, and 50 - 60 wt% demineralized water; the above weather resistance modifier is sodium silicate, and the above corrosion inhibitor is hydroxyethylidene diphosphonic acid.

[0061] The present invention fills the passivator with the weather resistance modifier sodium silicate, which can form a dense silicate film on the metal surface. This film not only provides a physical barrier to prevent moisture, oxygen, and other corrosive substances from contacting the metal, but also increases the adhesion of the coating. At the same time, the corrosion inhibitor hydroxyethylidene diphosphonic acid can form stable complexes with metal ions, prevent these ions from precipitating to form scale or deposits, adsorb on the metal surface, form a thin and uniform protective film, and inhibit the oxidation and corrosion process of the metal.

[0062] Reaction kettle for producing environment-friendly bimetallic passivator, please refer to Figures 1 - 4As shown in the figure, it includes: a bracket 1; a reaction tank 2, fixedly connected to the bracket 1, with a feeding pipe and a discharging pipe fixedly connected and communicated to the top and bottom of the reaction tank 2 respectively; two exhaust pipes 3, fixedly connected and communicated to the reaction tank 2, with a sealing plug piston 4 slidably connected inside the exhaust pipes 3; two first elastic members 5, respectively arranged between the adjacent exhaust pipes 3 and the adjacent plug pistons 4; a pressure sensor, arranged inside the reaction tank 2 for detecting the gas pressure inside the reaction tank 2; a stirring assembly, arranged on the reaction tank 2 for stirring the materials inside the reaction tank 2; a heating assembly, arranged on the reaction tank 2 for heating the materials inside the reaction tank 2.

[0063] In the above solution, a control terminal is arranged on the bracket 1. The reaction tank 2 is made of stainless steel and has a glass lining to improve the corrosion resistance to acids and alkalis. At the same time, a transparent observation sight glass is arranged on the reaction tank 2 for the staff to observe the reaction situation of the internal raw materials. Both exhaust pipes 3 are communicated with an external gas collection device to prevent harmful gas leakage. The first elastic member 5 is a tension spring for driving the adjacent plug piston 4 to move upward. The first elastic member 5 is always in a stretched state, that is, the front plug piston 4 protrudes out of the adjacent exhaust pipe 3, so that the gas generated by the reaction can enter the gas collection device along the front exhaust pipe 3. At this time, the rear plug piston 4 blocks the adjacent exhaust pipe 3, that is, the gas generated by the reaction cannot be discharged along the rear exhaust pipe 3. After blocking the front exhaust pipe 3, the rear exhaust pipe 3 is opened to discharge the reaction tank 2 along the rear exhaust pipe 3, avoiding the situation that the exhaust pipe 3 is blocked after long-term use, resulting in a sharp increase in the pressure inside the reaction tank 2 and affecting the preparation quality of the passivator.

[0064] Specifically, please refer to Figure 2 and Figure 3 As shown in the figure, the stirring assembly includes: a fixing frame 21, fixedly connected to the reaction tank 2; a first motor 22, fixedly connected to the fixing frame 21; a rotating shaft 23, rotatably connected to the inside of the reaction tank 2 in a sealed manner. The output shaft of the first motor 22 is fixedly connected to the rotating shaft 23, and the rotating shaft 23 is fixedly connected with a stirring frame 24; a transmission assembly, arranged on the reaction tank 2 for switching the opened exhaust pipe 3.

[0065] In the above solution, the first motor 22 is connected to the control terminal. The first motor 22 is a three-phase asynchronous motor, which has the advantages of high reliability, good overload capacity and convenient maintenance. Corrosion-resistant coatings, such as epoxy phenolic resin coatings, are arranged on the outside of the rotating shaft 23 and the stirring frame 24, which have excellent resistance to acids and alkalis and good mechanical strength. The pressure sensor is electrically connected to the control terminal, and the pressure sensor is used to detect the gas pressure inside the reaction tank 2.

[0066] Specifically, please refer to Figure 3 and Figure 5As shown in the figure, the transmission assembly includes: a rotating ring 31, rotatably connected to the fixed frame 21; an extrusion ring 32, fixedly connected to the inside of the rotating ring 31, and both plug pistons 4 are in contact with the extrusion ring 32; a driving assembly, arranged on the fixed frame 21, for driving the rotating ring 31 to rotate.

[0067] In the above solution, the rotating ring 31 is arranged parallel to the fixed frame 21, the extrusion ring 32 is arranged obliquely, and the inclination angle of the extrusion ring 32 can be freely set. The height difference between the highest point and the lowest point of the lower side of the extrusion ring 32 is sufficient to drive the plug piston 4 to move upward to block the adjacent exhaust pipe 3. A wear-resistant coating, such as a chromium coating, is provided on the outside of the extrusion ring 32 to reduce the frictional loss between the extrusion ring 32 and the two plug pistons 4 and extend the service life.

[0068] Specifically, please refer to Figure 2 、 Figure 3 and Figure 5 As shown in the figure, the driving assembly includes: a second motor 33, fixedly connected to the fixed frame 21; a first gear 34, fixedly connected to the output shaft of the second motor 33; a first toothed ring 35, fixedly connected to the rotating ring 31, and the first toothed ring 35 meshes with the first gear 34.

[0069] In the above solution, the second motor 33 is electrically connected to the control terminal. The second motor 33 is also a three-phase asynchronous motor. The materials of the first gear 34 and the first toothed ring 35 are cast iron, which have high wear resistance and vibration damping performance, and low noise. The gas pressure in the reaction tank 2 is detected by a pressure sensor, and then the output shaft of the second motor 33 is controlled to drive the extrusion ring 32 to rotate 180°, switching the opening states of the two exhaust pipes 3.

[0070] Specifically, please refer to Figure 6 and Figure 7 As shown in the figure, the heating assembly includes: a heat exchange inner shell 41, hermetically and rotatably connected to the inside of the reaction tank 2, and the heat exchange inner shell 41 and the reaction tank 2 cooperate to form a heat exchange chamber 42. The reaction tank 2 is fixedly connected with an intake pipe and an outlet pipe communicated with the heat exchange chamber 42; heat exchange plates 43, several of them, are all fixedly connected to the heat exchange inner shell 41. The heat exchange plates 43 are provided with inner cavities, and the inner cavities of all the heat exchange plates 43 are communicated with the heat exchange chamber 42; a rotating assembly, arranged in the reaction tank 2, for driving the heat exchange inner shell 41 to rotate; several heat exchange plates are circumferentially and evenly distributed on circular trajectories with different radii centered on the central axis of the heat exchange inner shell, and the heat exchange plates on circular trajectories with different radii are staggered.

[0071] In the above solution, the heat exchange inner shell 41 and all the heat exchange plates 43 are made of stainless steel, and are provided with a corrosion-resistant coating on the outside. They have certain heat conduction performance and excellent corrosion resistance. The number of heat exchange plates 43 can be freely set. The intake pipe is located on the lower side of the reaction tank 2, and the exhaust pipe is located on the side wall of the reaction tank 2, which is convenient for hot gas to fully enter the inner cavity of the heat exchange plate 43, improving the heat exchange rate. The shape of the heat exchange plate 43 is an arc plate. The number of heat exchange plates 43 is six, divided into three groups, each group has two heat exchange plates 43, and the distance from each group to the central axis of the heat exchange inner shell 41 increases continuously. The adjacent two groups of heat exchange plates 43 are staggeredly distributed, which is used to increase the heating area of the reactants and make the raw material reaction uniform.

[0072] Specifically, please refer to Figure 6 As shown, the rotating assembly includes: a second gear ring 44, rotatably connected inside the reaction tank 2, and the heat exchange inner shell 41 is fixedly connected to the second gear ring 44; a second gear 45, rotatably connected inside the reaction tank 2, and the second gear ring 44 meshes with the second gear 45; a third gear 46, fixedly connected to the rotating shaft 23, and the third gear 46 meshes with the second gear 45.

[0073] In the above solution, corrosion-resistant coatings are provided on the outsides of the second gear ring 44, the second gear 45, and the third gear 46, and the outsides are smooth, which prolongs the service life and is convenient for cleaning. Here, through the transmission of the second gear 45, the rotating direction of the rotating shaft 23 is opposite to that of the heat exchange inner shell 41. Furthermore, the rotating shaft 23 and several heat exchange plates 43 stir the raw materials alternately, improving the uniformity of the raw materials and the preparation rate of the passivator.

[0074] Working principle: When it is necessary to prepare the passivator, the raw materials are transported into the reaction tank 2 along the feeding pipe by specific steps. After the raw material transportation is completed, the first motor 22 is started. The output shaft of the first motor 22 drives the rotating shaft 23 to rotate, and the rotating shaft 23 drives the stirring frame 24 to rotate to stir the raw materials in the reaction tank 2, causing the raw materials to start reacting. At the same time, gas at a specific temperature is injected into the heat exchange cavity 42 through the intake pipe, so that the gas flows along the heat exchange cavity 42 and exchanges heat with the raw materials in the reaction tank 2, and finally discharges along the exhaust pipe. A reaction environment at a specific temperature is provided for the raw materials in the reaction tank 2. The gas generated during the reaction will discharge along the exhaust pipe 3. In this way, until the reaction is completed, the gas generated during the reaction will carry part of the raw materials and discharge along the exhaust pipe 3 at the same time. After the raw material temperature drops, it will adhere to the inner wall of the exhaust pipe 3. After long-term use, it will cause the flow aperture of the exhaust pipe 3 to decrease or even be blocked, and then cause the gas generated by the reaction to be unable to discharge from the reaction tank 2, and the air pressure in the reaction tank 2 increases.

[0075] When the exhaust pipe 3 becomes blocked, the gas generated in the reaction tank 2 cannot be discharged in time and accumulates in the reaction tank 2, causing the pressure in the reaction tank 2 to rise. At this time, the pressure sensor detects the pressure change and sends a signal to the control terminal. The control terminal activates the second motor 33, causing the output shaft of the second motor 33 to drive the first gear 34 to rotate. The first gear 34 drives the rotating ring 31 to rotate synchronously through the first toothed ring 35. The rotating ring 31 drives the internal extrusion ring 32 to rotate synchronously. In this way, until the extrusion ring 32 rotates 180°, then the second motor 33 is turned off. During this process, the extrusion ring 32 drives the heights of the two plug pistons 4 to change, causing the first elastic member 5 in the front exhaust pipe 3 to drive the adjacent plug piston 4 to move upward, blocking the front exhaust pipe 3. At the same time, the plug piston 4 at the rear moves downward, opening the rear exhaust pipe 3. At the same time, the first elastic member 5 at the rear is stretched, allowing the gas accumulated in the reaction tank 2 to be discharged along the rear exhaust pipe 3. By detecting the pressure change in the reaction tank 2, another exhaust pipe 3 is automatically switched, enabling the reaction tank 2 to discharge along the remaining exhaust pipe 3, preventing the gas pressure in the reaction tank 2 from gradually increasing and affecting the preparation rate of the passivating agent.

[0076] When the rotating shaft 23 drives the stirring frame 24 to stir the reactants, the rotating shaft 23 drives the third gear 46 to rotate. The third gear 46 drives the second toothed ring 44 to rotate synchronously through the second gear 45, causing the second toothed ring 44 to drive the heat exchange inner shell 41 at the bottom to rotate synchronously. Through the transmission of the second gear 45 and the third gear 46, the rotating shaft 23 and the heat exchange inner shell 41 rotate in opposite directions. The heat exchange inner shell 41 drives its misaligned heat exchange plates 43 to rotate in the opposite direction to the stirring frame 24, subjecting the raw materials in the reaction tank 2 to staggered rotational forces, enabling the raw materials to react evenly and increasing the reaction rate. At the same time, the heating area of the raw materials is increased through several heat exchange plates 43, causing the temperature of the raw materials to quickly rise to the required temperature at the beginning of the reaction, thereby increasing the reaction rate.

[0077] When the preparation of the passivating agent is completed, the staff turns off the first motor 22, stops the rotation of the stirring frame 24 and the heat exchange inner shell 41, and at the same time stops injecting high-temperature gas into the intake pipe. Then, the product located in the reaction tank 2 is discharged, and the reaction tank 2 is cleaned. When the exhaust pipe 3 is blocked, after the passivating agent is prepared, the blocked exhaust pipe 3 is cleaned synchronously to restore its original flow aperture. When the exhaust pipe 3 becomes blocked again, the above steps are repeated.

[0078] In a further embodiment, please refer to Figure 8As shown in the figure, it further includes: a locking assembly, which is arranged on the reaction tank 2 and is used to quickly lock the rotating shaft 23. The locking assembly includes: a plurality of clamping blocks 51, which are all fixedly connected to the rotating shaft 23 and are located outside the reaction tank 2; a limiting block 52, which is slidably connected to the reaction tank 2. The limiting block 52 limits the rotating shaft 23 through the clamping blocks 51, and a second elastic member 53 is arranged between the limiting block 52 and the reaction tank 2; a pushing assembly, which is arranged on the limiting block 52 and is used to push the limiting block 52 to slide.

[0079] In the above solution, the number of the clamping blocks 51 can be freely set, and several clamping blocks 51 are circumferentially and equally spaced on the rotating shaft 23. The materials of the clamping blocks 51 and the limiting block 52 are high-strength steel, which has a certain structural strength and reduces the situation of fracture caused by collision. The second elastic member 53 is a spring, and the second elastic member 53 is used to drive the limiting block 52 to reset.

[0080] Specifically, please refer to Figure 8 As shown in the figure, the pushing assembly includes: a rotating member 54, which is fixedly connected to the first gear 34, and half of the pitch circle circumference of the first toothed ring 35 is an integer multiple of the pitch circle circumference of the first gear 34; a pushing block 55, which is fixedly connected to the limiting block 52, and the rotating member 54 is used to squeeze the pushing block 55.

[0081] In the above solution, in this application, half of the pitch circle circumference of the first toothed ring 35 is twice the pitch circle circumference of the first gear 34, that is, when the first toothed ring 35 rotates 180°, the first gear 34 rotates two circles. The rotating member 54 is provided with a groove, and the shape of the groove is an isosceles trapezoid, and the pushing block 55 is an isosceles trapezoid block. Initially, the pushing block 55 is located in the groove of the rotating member 54. When switching the exhaust pipe 3, the first gear 34 will synchronously drive the rotating member 54 to rotate 180°. The groove of the rotating member 54 squeezes the pushing block 55 to immediately lock the rotating shaft 23, stop stirring the raw materials in the reaction tank 2 in time, and at the same time turn off the first motor 22, inhibit the reaction rate of the raw materials, reduce the generation rate of the gas in the reaction tank, and enable the gas in the reaction tank to be quickly discharged.

[0082] When the pressure sensor detects an increase in the pressure inside the reaction tank 2, that is, when the currently used exhaust pipe 3 is blocked and the second motor 33 is triggered to switch the exhaust pipe 3, the control terminal synchronously shuts down the first motor 22 and simultaneously stops injecting high-temperature gas into the intake pipe. By stopping the stirring and heating of the reactants, the gas generation rate is reduced to ensure that the pressure increase rate inside the reaction tank 2 is slow or does not increase. However, due to the rotational inertia of the rotating shaft 23 and the stirring frame 24, it is difficult for the rotating shaft 23 to stop rotating quickly. Its speed gradually slows down until it stops, resulting in difficulty in reducing the gas generation rate in the reaction tank 2. As a result, after switching the exhaust pipe 3, the gas inside the reaction tank 2 cannot be discharged to the atmospheric pressure state in time, affecting the preparation rate of the passivator. Therefore, when the output shaft of the second motor 33 drives the extrusion ring 32 to switch the exhaust pipe 3 through the first gear 34, the first toothed ring 35, and the rotating ring 31, the first gear 34 drives the rotating member 54 to rotate synchronously. At this time, the groove of the rotating member 54 squeezes the push block 55, and the push block 55 drives the limiting block 52 to slide along the reaction tank 2 under the extrusion force of the rotating member 54. At the same time, the second elastic member 53 is compressed until the push block 55 fits with the edge of the rotating member 54. At this time, the limiting block 52 slides to the limit state. When the rotating shaft 23 is still rotating due to inertia, the rotating shaft 23 drives the block 51 arranged in an annular array thereon to contact the limiting block 52, so that the limiting block 52 limits the rotating shaft 23 through the block 51 and stops the rotation of the rotating shaft 23. This continues until the first gear 34 drives the rotating member 54 to rotate two circles (simultaneously the first toothed ring 35 rotates 180°), causing the push block 55 to slide along the rotating member 54 and finally stop in the groove of the rotating member 54. At this time, the rotating member 54 releases the limit on the push block 55, and the second elastic member 53 pushes the limiting block 52 back to the initial state. The limiting block 52 releases the limit on the block 51. By stopping the stirring and heating of the raw materials inside the reaction tank 2 when switching the exhaust pipe 3 and simultaneously through physical limiting means, the rotating shaft 23 is quickly stopped from rotating, suppressing the reaction rate of the raw materials and reducing the gas generation rate inside the reaction tank 2, so that the gas inside the reaction tank 2 can be quickly discharged.

[0083] When the limiting block 52 releases the limit on the block 51, at this time, the exhaust pipe 3 is synchronously switched, and the gas accumulated inside the reaction tank 2 starts to be discharged along the exhaust pipe 3. This continues until the pressure sensor detects that the pressure of the reaction tank 2 has returned to the atmospheric pressure state. The pressure sensor sends a signal to the control terminal, causing the control terminal to turn on the first motor 22, so that the output shaft of the first motor 22 drives the stirring frame 24 and several heat exchange plates 43 through the rotating shaft 23 to continue stirring the raw materials, and at the same time continue to inject high-temperature gas into the intake pipe to heat the raw materials to a specific temperature and continue the preparation of the passivator until the reaction is completed.

[0084] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. Environmentally friendly bimetallic passivator production reactor, characterized in that: Included are: Bracket (1); A reaction tank (2) is fixedly connected to the support (1), and the top and bottom of the reaction tank (2) are respectively fixedly connected and connected to a material injection pipe and a material discharge pipe; The exhaust pipes (3) have two portions, are fixedly connected and communicate with the reaction tank (2), and a blocking piston (4) is sealingly and slidably connected inside the exhaust pipes (3); There are two first elastic members (5), which are respectively arranged between adjacent exhaust pipes (3) and adjacent blocking pistons (4); A pressure sensor, arranged in the reaction tank (2), for detecting the gas pressure in the reaction tank (2); A stirring component, arranged on the reaction tank (2), and used for stirring the material in the reaction tank (2); A heating component, arranged in the reaction tank (2), and used for heating the material in the reaction tank (2); The stirring assembly comprises: A fixing frame (21), fixedly connected to the reaction tank (2); A first motor (22) fixedly connected to the fixing frame (21); A rotating shaft (23) is sealed and rotatably connected to the interior of the reaction tank (2); an output shaft of the first motor (22) is fixedly connected to the rotating shaft (23); and a stirring frame (24) is fixedly connected to the rotating shaft (23); A transmission assembly, disposed on the reaction tank (2), and used for switching the exhaust pipe (3) open; The transmission assembly comprises: A swivel (31) rotatably connected to the fixing frame (21); An extrusion ring (32) is fixedly connected to the inside of the rotating ring (31), and the two blocking pistons (4) are both in contact with the extrusion ring (32); A driving assembly, disposed on the fixing frame (21), and used for driving the rotating ring (31) to rotate; The rotating ring (31) is arranged parallel to the fixing frame (21), the extrusion ring (32) is arranged obliquely, and the inclination angle of the extrusion ring (32) can be freely set, and the height difference between the highest point and the lowest point of the lower side of the extrusion ring (32) is sufficient to drive the blocking piston (4) to move upward to block the adjacent exhaust pipe (3).

2. The environmentally friendly bimetallic passivator production reactor according to claim 1, characterized in that: The drive assembly comprises: A second motor (33) fixedly connected to the fixing frame (21); A first gear (34) fixedly connected to an output shaft of the second motor (33); The first gear ring (35) is fixedly connected to the rotating ring (31), and the first gear ring (35) is meshed with the first gear (34).

3. The environmentally friendly bimetallic passivator production reactor according to claim 2, characterized in that: The heating component comprises: A heat exchange inner shell (41) is sealed and rotatably connected to the interior of the reaction tank (2), and the heat exchange inner shell (41) cooperates with the reaction tank (2) to form a heat exchange cavity (42), and the reaction tank (2) is fixedly connected with an air inlet pipe and an air outlet pipe that are in communication with the heat exchange cavity (42); A plurality of heat exchange plates (43) are fixedly connected to the heat exchange inner shell (41); the heat exchange plates (43) are provided with inner cavities, and the inner cavities of all the heat exchange plates (43) are in communication with the heat exchange cavity (42); A rotating assembly is arranged in the reaction tank (2) and is used to drive the heat exchange inner shell (41) to rotate.

4. The environmentally friendly bimetallic passivator production reactor according to claim 3, characterized in that: The plurality of heat exchange plates (43) are evenly distributed circumferentially on circular tracks of different radii with the central axis of the heat exchange inner shell (41) as the central axis, and the heat exchange plates (43) on the circular tracks of different radii are staggered.

5. The environmentally friendly bimetallic passivator production reactor according to claim 4, characterized in that: The rotating assembly comprises: A second gear ring (44) is rotatably connected to the reaction tank (2), and the heat exchange inner shell (41) is fixedly connected to the second gear ring (44); A second gear (45) is rotatably connected to the reaction tank (2), and the second gear ring (44) is meshed with the second gear (45); The third gear (46) is fixedly connected to the rotating shaft (23), and the third gear (46) is meshed with the second gear (45).

6. The environmentally friendly bimetallic passivator production reactor according to claim 5, characterized in that: Also included are: A locking assembly is arranged on the reaction tank (2) and is used to quickly lock the rotating shaft (23), wherein the locking assembly comprises: There are a plurality of clamping blocks (51), all of which are fixedly connected to the rotating shaft (23) and are located outside the reaction tank (2); a limit block (52) slidably connected to the reaction tank (2), the limit block (52) limiting the rotation axis (23) through the clamping block (51), and a second elastic member (53) being provided between the limit block (52) and the reaction tank (2); A pushing component is arranged on the limiting block (52) and is used to push the limiting block (52) to slide.

7. The environmentally friendly bimetallic passivator production reactor according to claim 6, characterized in that: The pushing component comprises: A rotating member (54) is fixedly connected to the first gear (34), wherein half of the circumference of the indexing circle of the first gear ring (35) is an integer multiple of the circumference of the indexing circle of the first gear (34); The push block (55) is fixedly connected to the limit block (52), and the rotating member (54) is used to press the push block (55).

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