A reaction device for precise dosing

Abstract

The application relates to the technical field of reaction kettles, and discloses a reaction device with precise quantitative feeding, which comprises a floor, the inner wall of the floor is respectively fixed with a first floor slab and a second floor slab, the top of the second floor slab is fixed with a feeding frame, feeding notches are arranged on the top of the feeding frame, sliding grooves are arranged in the interiors of the two sides of the feeding frame, the inner wall of one side of the sliding groove is fixed with a first air cylinder, and the output shaft of the first air cylinder is fixed with a sealing plate. The reaction device with precise quantitative feeding is characterized in that the repeated starting of the first air cylinder makes the first air cylinder drive the sealing plate to repeatedly extrude the jacks, then the jacks and the connecting plates repeatedly knock the quantitative feeding bin under the action of the first spring reset, the quantitative feeding bin is more fluent and complete in feeding sodium nitrite and DADPM, sodium nitrite and DADPM are prevented from adhering to the inner wall of the quantitative feeding bin, and the accuracy of quantitative feeding is improved.

Description

Technical Field

[0001] This invention relates to the field of reaction vessel technology, specifically to a reaction device for precise quantitative feeding. Background Technology

[0002] Diazotization is a chemical reaction in which aromatic primary amines react with nitrous acid (in a strong acid medium) to form diazonium salts (generally carried out at low temperature, with a molar ratio of primary amine to acid of 1:2.5). In the diazotization reaction of DFDPM, sodium nitrite and DADPM need to be stirred separately before being added to the reaction vessel for reaction.

[0003] In existing technologies, when using a reactor for diazotization, materials are usually quantitatively added to a stirring device and stirred until they reach a stable, uniform particle size before being added to the reactor for reaction. During the stirring and feeding process, in order to avoid dust generation and excessive stirring speed, manual stirring is usually performed to reduce the collision between the metal container and the stirring device and reduce the probability of sparks. However, manual addition and stirring not only result in large addition errors, but also pose a risk of explosion due to stirring. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a reaction apparatus for precise quantitative feeding, thus solving the problems mentioned in the background section.

[0005] The present invention provides the following technical solution: a reaction device for precise quantitative feeding, comprising a floor, wherein a first floor slab and a second floor slab are respectively fixed to the inner wall of the floor, and a feeding rack is fixed to the top of the second floor slab;

[0006] The top of the feeding rack has feeding slots on both sides, and sliding grooves are formed inside the sides of the feeding rack. A first cylinder is fixed to the inner wall of one side of the sliding groove. A sealing plate is fixed to the output shaft of the first cylinder, and the sealing plate is slidably connected to the sliding groove. A first spring is fixed to the bottom of the feeding rack on the side away from the first cylinder. A connecting plate is fixed to the bottom of the first spring. A top rod is fixed to the top of one side of the connecting plate. The top rod is slidably connected to the feeding rack and passes through the sliding groove.

[0007] The surface of the first floor slab is provided with a reaction vessel assembly for the reaction;

[0008] The bottom of the feeding rack is equipped with a feeding component for feeding materials;

[0009] The surface of the second floor slab is provided with a mixing component for mixing materials;

[0010] The feeding component is connected to the reaction vessel component through the mixing component.

[0011] Optionally, the reactor assembly includes a reactor, which is snapped into the interior of the first floor slab. The surface of the reactor is fixed with fixed feet, and the bottom of the fixed feet is fixed with a reactor weighing module. The reactor weighing module is fixed to the top of the first floor slab. The top of the reactor is fixed with a servo motor via a flange. The output shaft of the servo motor is fixed with a stirring rod, and the surface of the stirring rod is fixed with two sets of stirring blades.

[0012] The feed inlets on both sides of the top of the reactor are each equipped with a manual valve. A PTFE tube with a union is fixed to the top of the manual valve, and an interlocking feed valve is fixed to the top of the PTFE tube with a union.

[0013] Optionally, a feeding plate is fixed to one side of the feeding rack.

[0014] Optionally, the feeding assembly includes two quantitative feeding bins, which are fixed to the bottom of the feeding frame and located directly below the two feeding troughs. The outer side of each quantitative feeding bin is fixed with a feeding bin lifting lug, and the bottom of each quantitative feeding bin is fixed with a discharge pipe via a flange. The bottom of the discharge pipe is fixed with a screw conveyor.

[0015] Optionally, the top of the screw conveyor is fixed with a screw conveyor lug, the screw conveyor lug and the feeding hopper lug are connected by a steel cable, the inner wall of the screw conveyor is fixed with an isolation sealing plate, and the inner cavity of the screw conveyor is divided into a first material pipe and a second material pipe by the isolation sealing plate. A rotating shaft is rotatably connected inside the isolation sealing plate, and one end of the rotating shaft near the feeding plate passes through the screw conveyor and is equipped with a drive motor through a flange.

[0016] Spiral plates are fixed to the surfaces at both ends of the rotating shaft. A first discharge pipe is fixed to the surface of the spiral conveying auger on the side near the first material pipe. A second discharge pipe is fixed to the surface of the spiral conveying auger on the side near the second material pipe.

[0017] Optionally, the mixing assembly includes two mixing hoppers, which are fixed and connected to a first discharge pipe and a second discharge pipe, respectively. Hopper supports are fixed to the surface of each mixing hopper, and a hopper weighing module is fixed to the bottom of each hopper support. The hopper weighing module is fixed to the top of the second floor slab. A feed inlet is provided on the surface of each mixing hopper, and the first and second discharge pipes are connected to the mixing hopper through the feed inlet. A second cylinder is fixed to the top of the mixing hopper via a flange, and a wooden rod is fixed to the output shaft of the second cylinder. The bottom of the mixing hopper is fixed to an interlocking discharge valve via a flange.

[0018] Optionally, limit tubes are fixed on both sides of the top plate of the mixing hopper cavity, and a sliding rod is slidably connected inside the limit tube. A second spring is fixed to the top of the sliding rod, one end of the second spring is fixed to the top plate of the mixing hopper cavity, a screen is fixed to the bottom of the sliding rod, a central top rod is fixed to the middle of the screen, and a top hammer is fixed to the bottom of the central top rod.

[0019] Optionally, the inner wall of the mixing hopper is fixed with a four-part fixed frame, the central top rod is slidably connected to the four-part fixed frame, each plate of the four-part fixed frame is slidably and sealed with a linkage rod, the surface of the linkage rod is fixed with a limit plate, the surface of the central top rod is fixed with a compression ring above the four-part fixed frame, the surface of the side of the compression ring is fixed with a compression plate, and the number and position of the compression plates correspond to the plates of the four-part fixed frame.

[0020] Optionally, each of the four equal-division fixing frames has an isolation plate fixed in its inner cavity, and the inner cavity of each plate is divided into a storage cavity and a sliding cavity by the isolation plate. A striking block is slidably connected inside the sliding cavity. The striking block abuts against the inner wall of the mixing hopper. A third spring is fixed at the top and bottom of the striking block near the isolation plate. The third spring is fixed to the isolation plate.

[0021] A steel wire rope is fixed to the middle of the striking block near the isolation plate. The steel wire rope passes through the isolation plate and the linkage rod, and one end of the steel wire rope is fixed to the inner wall of the storage cavity.

[0022] Optionally, a quantitative feeding cart is provided on the top of the feeding rack, a roller group is rotatably connected to the bottom of the quantitative feeding cart, a guardrail is fixed on the top of the quantitative feeding cart, a handle is fixed on one side of the guardrail, and a handrail is fixed on the top of the handle.

[0023] A pull-out groove is provided at the middle of the bottom of the quantitative feeding cart. Slide rails are fixed on both sides of the pull-out groove. A sealing baffle is slidably connected inside the slide rails. A pull-out plate is fixed at the bottom of one end of the sealing baffle. A loading box is snapped into the top of the quantitative feeding cart inside the guardrail. A material outlet is provided at the bottom of the loading box and is connected to the pull-out groove.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This precise metering reaction device, through the repeated starting of the first cylinder, causes the first cylinder to drive the sealing plate to repeatedly squeeze the top rod. In turn, the top rod and the connecting plate, under the action of the first spring reset, repeatedly strike the metering bin, thereby making the metering of sodium nitrite and DADPM more smooth and thorough, avoiding the adhesion of sodium nitrite and DADPM to the inner wall of the metering bin, thus improving the accuracy of metering.

[0026] 2. This precise quantitative feeding reaction device uses a mixing component to screen qualified sodium nitrite and DADPM through repeated vibration of a screen. The vibration of the screen breaks up the clumps of sodium nitrite and DADPM. Furthermore, the second cylinder drives the extrusion plate and the limiting plate to repeatedly strike the four-part fixed frame, thereby vibrating the mixing hopper and crushing the sodium nitrite and DADPM, so that the sodium nitrite and DADPM can stably reach a steady-state uniform particle size. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the feeding rack of the present invention;

[0029] Figure 3 This is a cross-sectional view of the material feeding rack of the present invention;

[0030] Figure 4 This is a cross-sectional view of the quantitative feeding bin of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the mixing hopper of the present invention;

[0032] Figure 6 This is a cross-sectional view of the mixing hopper of the present invention;

[0033] Figure 7 This is a schematic diagram showing the positional relationship between the central top rod and the four-part fixing frame of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the reaction vessel of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of the stirring rod of the present invention;

[0036] Figure 10 This is a side view of the spiral conveyor auger of the present invention;

[0037] Figure 11 This is a cross-sectional view of the spiral conveyor auger of the present invention;

[0038] Figure 12 For the present invention Figure 6 A magnified view of a section at point A in the middle;

[0039] Figure 13 This is a schematic diagram of the quantitative feeding vehicle of the present invention.

[0040] In the diagram: 1. Floor; 11. First floor slab; 12. Second floor slab; 2. Reactor; 21. Fixed support leg; 22. Reactor weighing module; 23. Servo motor; 24. Stirring rod; 25. Stirring blade; 26. Manual valve; 27. Union PTFE hose; 28. Interlocking discharge valve; 3. Feeding rack; 31. Feeding plate; 32. Feed inlet; 33. Sliding groove; 34. First cylinder; 35. Sealing plate; 36. First spring; 37. Connecting plate; 38. Top rod; 4. Quantitative feeding bin; 41. Feeding bin lifting lug; 42. Discharge pipe; 5. Screw conveyor; 51. Screw conveyor lifting lug; 52. Steel cable; 53. Isolation sealing plate; 531. First feed pipe; 532. Second feed pipe; 54. Rotating shaft; 55. Drive motor; 56. Spiral plate; 57. First discharge pipe; 571. Second discharge pipe; 6. Mixing hopper; 61. Hopper support leg; 62. Hopper weighing module; 63. Feed inlet; 64. Second cylinder; 641. Wooden rod; 7. Limiting pipe; 71. Sliding rod; 72. Second spring; 73. Screen; 74. Central top rod; 75. Top hammer; 76. Quartered fixing frame; 77. Linkage rod; 771. Limiting plate; 78. Extrusion ring; 79. Extrusion plate; 8. Isolation plate; 81. Storage cavity; 82. Sliding cavity; 83. Striking block; 84. Third spring; 85. Steel wire rope; 9. Quantitative feeding cart; 91. Roller assembly; 92. Guardrail; 93. Handle; 94. Handrail; 95. Pull-out groove; 96. Slide rail; 97. Sealing baffle; 98. Pull-out plate; 99. Material box. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1:

[0043] Please see Figure 1-13A reaction device for precise quantitative feeding includes a floor 1. A first floor slab 11 and a second floor slab 12 are fixed to the inner wall of the floor 1. A feeding rack 3 is fixed to the top of the second floor slab 12. Feed inlets 32 are opened on both sides of the top of the feeding rack 3. Sliding grooves 33 are opened inside the two sides of the feeding rack 3. A first cylinder 34 is fixed to the inner wall of one side of the sliding groove 33. A sealing plate 35 is fixed to the output shaft of the first cylinder 34, and the sealing plate 35 is slidably connected to the sliding groove 33. A first spring 36 is fixed to the bottom of the feeding rack 3 on the side away from the first cylinder 34. A connecting plate 37 is fixed to the bottom of the first spring 36. A top rod 38 is fixed to the top of one side of the connecting plate 37. The top rod 38 is slidably connected to the feeding rack 3 and passes through the sliding groove 33.

[0044] The surface of the first floor slab 11 is provided with a reactor assembly for reaction, and the bottom of the feeding rack 3 is provided with a feeding assembly for feeding. The surface of the second floor slab 12 is provided with a mixing assembly for mixing materials. The feeding assembly is connected to the reactor assembly through the mixing assembly. A feeding plate 31 is fixed on one side of the feeding rack 3. The feeding assembly includes two quantitative feeding bins 4. The quantitative feeding bins 4 are fixed at the bottom of the feeding rack 3 and are located directly below the two feed inlets 32 respectively. A feeding bin lifting lug 41 is fixed on the outside of the quantitative feeding bins 4. A discharge pipe 42 is fixed at the bottom of the quantitative feeding bins 4 through a flange. A screw conveyor 5 is fixed at the bottom of the discharge pipe 42.

[0045] The top of the screw conveyor 5 is fixed with a screw auger lug 51. The screw auger lug 51 and the feeding bin lug 41 are connected by a steel cable 52. The inner wall of the screw conveyor 5 is fixed with an isolation sealing plate 53. The inner cavity of the screw conveyor 5 is divided into a first material pipe 531 and a second material pipe 532 by the isolation sealing plate 53. A rotating shaft 54 ​​is rotatably connected inside the isolation sealing plate 53. One end of the rotating shaft 54 ​​near the feeding plate 31 passes through the screw conveyor 5 and a drive motor 55 is installed through a flange. Spiral plates 56 are fixed on the surfaces at both ends of the rotating shaft 54. A first discharge pipe 57 is fixed on the surface of the screw conveyor 5 near the first material pipe 531. A second discharge pipe 571 is fixed on the surface of the screw conveyor 5 near the second material pipe 532.

[0046] The top of the feeding rack 3 is equipped with a quantitative feeding cart 9. The bottom of the quantitative feeding cart 9 is rotatably connected with a roller group 91. The top of the quantitative feeding cart 9 is fixed with a guardrail 92. A handle 93 is fixed on one side of the guardrail 92. A handle 94 is fixed on the top of the handle 93. A pull-out groove 95 is opened at the middle of the bottom of the quantitative feeding cart 9. Slide rails 96 are fixed on both sides of the pull-out groove 95. A sealing baffle 97 is slidably connected inside the slide rail 96. A pull-out plate 98 is fixed at the bottom of one end of the sealing baffle 97. A loading box 99 is snapped into the top of the quantitative feeding cart 9 inside the guardrail 92. A material outlet is opened at the bottom of the loading box 99 and the material outlet is connected to the pull-out groove 95.

[0047] In actual operation, sodium nitrite and DADPM are first added into two quantitative feeding carts 9 respectively, so that the two quantitative feeding carts 9 are fully loaded to the rated amount. Then, the quantitative feeding carts 9 are pushed so that they move to the top of the feeding rack 3 via the feeding plate 31, and the two quantitative feeding carts 9 are moved above the two feeding slots 32 respectively. Then, the controller controls the first cylinder 34 to return, so that the first cylinder 34 drives the sealing plate 35 to move in the direction of the first cylinder 34 inside the sliding groove 33, thereby connecting the feeding slot 32 with the quantitative feeding bin 4.

[0048] Then, pull the pull plate 98. By manually pulling the pull plate 98, the pull plate 98 causes the sealing baffle 97 to slide inside the slide rail 96, thereby releasing the sealing baffle 97 from the material opening of the filling box 99. This allows the sodium nitrite and DADPM in the two filling boxes 99 to enter the two quantitative feeding bins 4 through the feed inlet 32, and then the sodium nitrite and DADPM enter the first feed pipe 531 and the second feed pipe 532 through the discharge pipe 42, respectively.

[0049] Then, the drive motor 55 is started by the controller, which drives the rotating shaft 54 ​​to rotate inside the screw conveyor 5, which in turn drives the spiral plate 56 to rotate. The spiral plate 56 then conveys sodium nitrite and DADPM in the first material pipe 531 and the second material pipe 532 through the spiral conveyor, so that sodium nitrite and DADPM enter the mixing component through the first discharge pipe 57 and the second discharge pipe 571 respectively for mixing.

[0050] Specifically, after all the sodium nitrite and DADPM in the feeding box 99 have entered the quantitative feeding hopper 4, the first cylinder 34 is pushed out again, causing the first cylinder 34 to push the sealing plate 35 inside the sliding groove 33 towards the first spring 36 until the sealing plate 35 closes the feed inlet 32, so that the quantitative feeding hopper 4 is in a closed state, thereby preventing moisture in the air from entering the quantitative feeding hopper 4, thereby reducing the probability of sodium nitrite deliquescence and agglomeration, and reducing the pressure of subsequent mixing;

[0051] Meanwhile, the sealing plate 35 can prevent dust in the air from entering the quantitative feeding hopper 4, thereby ensuring the purity of sodium nitrite and DADPM and guaranteeing the quality of subsequent products.

[0052] Furthermore, as the sealing plate 35 moves toward the first spring 36, the sealing plate 35 and the push rod 38 gradually approach each other until the sealing plate 35 contacts the push rod 38. After the push rod 38 is under pressure, it slides on the inner wall of the feeding rack 3, causing the push rod 38 to drive the connecting plate 37 and the first spring 36 to press down, causing the connecting plate 37 to release its contact with the quantitative feeding bin 4. At this time, the controller can control the first cylinder 34 to perform small-amplitude repeated pushing and returning, and maintain the closed state of the quantitative feeding bin 4, so that the sealing plate 35 repeatedly squeezes the push rod 38, causing the push rod 38 to drive the connecting plate 37 to repeatedly rise and fall.

[0053] During the descent of the top rod 38, it drives the connecting plate 37 and stretches the first spring 36. When the sealing plate 35 releases contact with the top rod 38, the connecting plate 37 and the top rod 38 reset under the elastic action of the first spring 36. During the reset process, the connecting plate 37 acts as a tapping device for the quantitative feeding bin 4, which prevents sodium nitrite and DADPM from adhering to the inner wall of the quantitative feeding bin 4 when adding sodium nitrite and DADPM. This makes the quantitative feeding bin 4 add sodium nitrite and DADPM more quickly and stably, further improving the efficiency of quantitative feeding.

[0054] Meanwhile, as the connecting plate 37 repeatedly taps the metering feed hopper 4, it can prevent the bottom outlet of the metering feed hopper 4 from being blocked by sodium nitrite and DADPM, ensuring the smooth feeding of the metering feed hopper 4, thereby increasing the feeding speed, shortening the time of the entire reaction process, and thus improving the efficiency of the diazotization reaction.

[0055] It should be noted that all the equipment in this invention is controlled by a controller. The isolation sealing plate 53 is provided with a rotating sealing ring to ensure that sodium nitrite and DADPM are not mixed in advance inside the screw conveyor 5, and can be fed into the mixing component through the first discharge pipe 57 and the second discharge pipe 571 respectively.

[0056] Example 2:

[0057] The reactor assembly includes a reactor 2, which is snapped into the interior of the first floor slab 11. A fixed support 21 is fixed to the surface of the reactor 2, and a reactor weighing module 22 is fixed to the bottom of the fixed support 21. The reactor weighing module 22 is fixed to the top of the first floor slab 11. A servo motor 23 is fixed to the top of the reactor 2 via a flange. A stirring rod 24 is fixed to the output shaft of the servo motor 23, and two sets of stirring blades 25 are fixed to the surface of the stirring rod 24.

[0058] Manual valves 26 are fixed to the feed inlets on both sides of the top of the reactor 2. A PTFE tube 27 with a union is fixed to the top of the manual valve 26. An interlocking discharge valve 28 is fixed to the top of the PTFE tube 27. The mixing assembly includes two mixing hoppers 6. The two mixing hoppers 6 are fixed and connected to the first discharge pipe 57 and the second discharge pipe 571 respectively. A hopper support leg 61 is fixed to the surface of the mixing hopper 6. A hopper weighing module 62 is fixed to the bottom of the hopper support leg 61. The hopper weighing module 62 is fixed to the top of the second floor slab 12. A feed inlet 63 is opened on the surface of the mixing hopper 6. The first discharge pipe 57 and the second discharge pipe 571 are connected to the mixing hopper 6 through the feed inlet 63. A second cylinder 64 is fixed to the top of the mixing hopper 6 through a flange. A wooden rod 641 is fixed to the output shaft of the second cylinder 64. The bottom of the mixing hopper 6 is fixed to the interlocking discharge valve 28 through a flange. Limiting pipes 7 are fixed to both sides of the top plate of the inner cavity of the mixing hopper 6.

[0059] The limiting tube 7 is internally slidably connected to a slide rod 71. A second spring 72 is fixed to the top of the slide rod 71. One end of the second spring 72 is fixed to the top plate of the inner cavity of the mixing hopper 6. A screen 73 is fixed to the bottom of the slide rod 71. A central top rod 74 is fixed to the middle of the screen 73. A top hammer 75 is fixed to the bottom of the central top rod 74. A four-part fixing frame 76 is fixed to the inner wall of the mixing hopper 6. The central top rod 74 is slidably connected to the four-part fixing frame 76. A linkage rod 77 is internally slidably sealed to each plate of the four-part fixing frame 76. A limiting plate 771 is fixed to the surface of the linkage rod 77. An extrusion ring 78 is fixed to the surface of the central top rod 74 above the four-part fixing frame 76. An extrusion plate 79 is fixed to the side surface of the extrusion ring 78. The number and position of the extrusion plates 79 correspond to the plates of the four-part fixing frame 76.

[0060] Specifically, based on Example 1, after sodium nitrite and DADPM enter the interior of the first feed pipe 531 and the second feed pipe 532, under the conveying of the spiral plate 56, sodium nitrite and DADPM enter the interior of the two mixing hoppers 6 through the first discharge pipe 57 and the second discharge pipe 571 respectively.

[0061] After sodium nitrite and DADPM enter the mixing hopper 6, the controller controls the second cylinder 64 to repeatedly push out and return, so that the second cylinder 64 drives the wooden rod 641 to repeatedly contact the top of the central push rod 74, so that the wooden rod 641 repeatedly strikes the central push rod 74.

[0062] When the wooden rod 641 strikes the central top rod 74, the central top rod 74 causes the screen 73 to descend vertically along the central top rod 74 inside the mixing hopper 6. When the wooden rod 641 is no longer in contact with the central top rod 74, the screen 73 and the sliding rod 71 return to their original positions under the elastic force of the second spring 72, which causes the screen 73 to rise vertically along the central top rod 74. Therefore, when the wooden rod 641 repeatedly strikes the central top rod 74, the screen 73 is in a state of repeated up-and-down vibration inside the mixing hopper 6.

[0063] When sodium nitrite and DADPM enter the mixing hopper 6 through the feed inlet 63, they fall onto the surface of the screen 73. Sodium nitrite and DADPM with qualified particle size pass through the screen 73, while those that do not meet the requirements remain on the surface of the screen 73. At this time, with the repeated lifting and vibration of the screen 73, the sodium nitrite and DADPM are broken down. Thus, without stirring, the sodium nitrite and DADPM are mixed to a stable and uniform particle size through physical impact, providing qualified raw materials for the subsequent diazotization reaction.

[0064] Furthermore, after qualified sodium nitrite and DADPM pass through the screen 73, they are collected inside the mixing hopper 6. When all the sodium nitrite and DADPM have entered the mixing hopper 6, the sodium nitrite and DADPM cover the four-part fixing frame 76. During the repeated push-out and return process of the second cylinder 64, the central push rod 74 drives the extrusion ring 78 and the extrusion plate 79 to rise and fall synchronously.

[0065] As the extrusion plate 79 descends, it gradually approaches the linkage rod 77 until it contacts and strikes the linkage rod 77, causing the linkage rod 77 to vibrate. After the extrusion plate 79 strikes the linkage rod 77, the vibration is transmitted through the linkage rod 77 to the four-part fixed frame 76, and then through the four-part fixed frame 76 to the mixing hopper 6, thereby causing the mixing hopper 6 to vibrate as a whole, and in turn, the sodium nitrite and DADPM inside the mixing hopper 6 to vibrate.

[0066] Because the mixing hopper 6 is cone-shaped, the pressure of the material at the bottom is greater than that of the material above. Therefore, the vibration of the mixing hopper 6 on sodium nitrite and DADPM prevents the broken sodium nitrite and DADPM at the bottom of the mixing hopper 6 from re-aggregating into lumps, keeping the sodium nitrite and DADPM in a stable particle state, thereby improving the efficiency of the subsequent diazotization reaction.

[0067] Once all the sodium nitrite and DADPM have been crushed within the set time, the manual valve 26 and the interlocking discharge valve 28 are manually opened, allowing the sodium nitrite and DADPM in the mixing hopper 6 to enter the interior of the reactor 2 through the PTFE tube 27 for the final diazotization reaction.

[0068] It should be noted that the hopper weighing module 62 and the drive motor 55 are interlocked by PLC control. When the mixing hopper 6 reaches the predetermined feeding weight, feedback information is sent to the drive motor 55, and the drive motor 55 stops rotating, causing the spiral plate 56 to stop conveying materials. Furthermore, the reactor weighing module 22, the hopper weighing module 62, and the interlocked feeding valve 28 are all interlocked, thereby achieving the purpose of strictly controlling the feeding amount. This allows the present invention to accurately and quantitatively feed materials, thus avoiding the situation of excessive feeding and waste of raw materials.

[0069] The PTFE tube 27 used for conveying sodium nitrite is DN100, while the PTFE tube 27 used for conveying DADPM is DN50. This ensures the smooth delivery of sodium nitrite and DADPM. The frequency of the second cylinder 64's ejection and return strokes can be adjusted by the controller.

[0070] Example 3:

[0071] Each of the four equal-division fixing frames 76 has an isolation plate 8 fixed in its inner cavity, and the inner cavity of each partition plate is divided into a storage cavity 81 and a sliding cavity 82 by the isolation plate 8. A striking block 83 is slidably connected inside the sliding cavity 82. The striking block 83 abuts against the inner wall of the mixing hopper 6. A third spring 84 is fixed at the top and bottom of the striking block 83 near the isolation plate 8. The third spring 84 is fixed to the isolation plate 8. A steel wire rope 85 is fixed in the middle of the striking block 83 near the isolation plate 8. The steel wire rope 85 passes through the isolation plate 8 and the linkage rod 77, and one end of the steel wire rope 85 is fixed to the inner wall of the storage cavity 81.

[0072] Specifically, based on Embodiment 1 and Embodiment 2, when the wooden rod 641 repeatedly strikes the central top rod 74, the central top rod 74 drives the pressing plate 79 to repeatedly strike the linkage rod 77. After being struck, the linkage rod 77 slides downward on the dividing plate of the four-part fixed frame 76, that is, one end of the linkage rod 77 is retracted into the interior of the storage cavity 81. During the retraction of the linkage rod 77, the steel wire rope 85 is pressed. Since one end of the steel wire rope 85 is fixed to the inner wall of the storage cavity 81 and is in a stationary state, after the steel wire rope 85 is pressed by the linkage rod 77, it pulls the striking block 83, so that the striking block 83 slides inside the sliding cavity 82 and toward the isolation plate 8, thereby causing the striking block 83 to compress the third spring 84.

[0073] When the second cylinder 64 returns, the central push rod 74 drives the pressing plate 79 to release the pressure on the linkage rod 77, which in turn causes the linkage rod 77 to lose the pressure on the wire rope 85. The striking block 83 then loses the tension of the wire rope 85. At this time, the striking block 83 resets under the action of the third spring 84, which causes the third spring 84 to drive the striking block 83 to quickly reset towards the inner wall of the mixing hopper 6. In the process of resetting, the striking block 83 further strikes the inner wall of the mixing hopper 6, which further improves the vibration effect of the mixing hopper 6 and further enhances the effect of the mixing hopper 6 in crushing sodium nitrite and DADPM.

[0074] Furthermore, the third spring 84 will continue to vibrate without damping until the elastic force disappears. Before the elastic force of the third spring 84 completely disappears, the second cylinder 64 repeatedly pushes out and returns, and drives the steel wire rope 85 to repeatedly pull the third spring 84. This causes the third spring 84 to drive the striking block 83 to maintain the striking state on the inner wall of the mixing hopper 6, thereby enabling the mixing hopper 6 to continuously crush sodium nitrite and DADPM.

[0075] Furthermore, once the sodium nitrite and DADPM materials have reached a stable and uniform particle size, the manual valve 26 and the interlocking discharge valve 28 can be opened to allow the sodium nitrite and DADPM to enter the interior of the reactor 2 through the PTFE tube 27. When the mixing hopper 6 feeds the materials into the reactor 2, the wooden rod 641 can be controlled to slowly push out again, so that the second cylinder 64 drives the central push rod 74 to repeatedly rise and fall inside the mixing hopper 6. During the repeated rising and falling process, the central push rod 74 drives the top hammer 75 to rise and fall synchronously.

[0076] When the interlocking discharge valve 28 is connected to the mixing hopper 6, the top hammer 75 repeatedly rises and falls above the outlet at the bottom of the mixing hopper 6 to clear the mixing hopper 6, avoiding the slow flow rate of sodium nitrite and DADPM in the mixing hopper 6, which would cause blockage of the mixing hopper 6, thereby improving the efficiency of material feeding into the mixing hopper 6, and thus improving the efficiency of the subsequent diazotization reaction.

[0077] It should be noted that the limiting plate 771 is located inside the receiving cavity 81. When the third spring 84 drives the striking block 83 to reset towards the inner wall of the mixing hopper 6, the striking block 83 pulls the wire rope 85, making the wire rope 85 horizontally taut. After the wire rope 85 is pulled to a horizontal state, it will drive the linkage rod 77 to reset. After resetting, the linkage rod 77 waits for the next strike from the extrusion plate 79. At the same time, when the linkage rod 77 resets, it drives the limiting plate 771 to strike the inner wall of the four-part fixed frame 76, further enhancing the vibration effect of the four-part fixed frame 76, thereby further strengthening the vibration crushing of sodium nitrite and DADPM in the mixing hopper 6.

[0078] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reaction device for precise dosing, comprising a floor (1), the inner wall of the floor (1) is respectively fixed with a first floor (11) and a second floor (12), characterized in that: The top of the second floor (12) is fixed with a feeding frame (3); The top of the feeding frame (3) is provided with feeding notches (32) on both sides, and the inside of the feeding frame (3) is provided with sliding grooves (33) on both sides, the inner wall of one side of the sliding groove (33) is fixed with a first air cylinder (34), the output shaft of the first air cylinder (34) is fixed with a sealing plate (35), and the sealing plate (35) is in sliding connection with the sliding groove (33), the bottom of the side of the feeding frame (3) away from the first air cylinder (34) is fixed with a first spring (36), the bottom of the first spring (36) is fixed with a connecting plate (37), the top of one side of the connecting plate (37) is fixed with a top rod (38), the top rod (38) is in sliding connection with the feeding frame (3) and passes through the sliding groove (33); The surface of the first floor (11) is provided with a reaction kettle assembly for reaction; The bottom of the feeding frame (3) is provided with a feeding assembly for feeding; The surface of the second floor (12) is provided with a mixing assembly for mixing materials, the mixing assembly comprises two mixing hoppers (6), the surface of the mixing hopper (6) is provided with a feeding inlet (63), the top of the mixing hopper (6) is fixed with a second air cylinder (64) through a flange, and the output shaft of the second air cylinder (64) is fixed with a wooden rod (641); The two sides of the top plate of the inner cavity of the mixing hopper (6) are fixed with limit tubes (7), the inside of the limit tube (7) is in sliding connection with a sliding rod (71), the top of the sliding rod (71) is fixed with a second spring (72), one end of the second spring (72) is fixed with the top plate of the inner cavity of the mixing hopper (6), and the bottom of the sliding rod (71) is fixed with a screen (73), the middle position of the screen (73) is fixed with a center top rod (74), and the bottom of the center top rod (74) is fixed with a top hammer (75); The feeding assembly is communicated with the reaction kettle assembly through the mixing assembly.

2. The precision dosing reaction apparatus of claim 1, wherein: The reaction kettle assembly comprises a reaction kettle (2), the reaction kettle (2) is clamped in the inside of the first floor (11), the surface of the reaction kettle (2) is fixed with a fixed leg (21), the bottom of the fixed leg (21) is fixed with a reaction kettle weighing module (22), the reaction kettle weighing module (22) is fixed on the top of the first floor (11), the top end of the reaction kettle (2) is fixed with a servo motor (23) through a flange, the output shaft of the servo motor (23) is fixed with a stirring rod (24), and the surface of the stirring rod (24) is fixed with two groups of stirring blades (25); The feeding inlet of the top of the reaction kettle (2) is fixed with a hand valve (26), the top of the hand valve (26) is fixed with a loose-joint type Teflon tube (27), and the top of the loose-joint type Teflon tube (27) is fixed with an interlocking discharging valve (28).

3. The precision dosing reaction apparatus of claim 1, wherein: One side of the feeding frame (3) is fixed with a feeding plate (31).

4. The precision dosing reaction apparatus of claim 1, wherein: The feeding assembly comprises two quantitative feeding bins (4) fixed at the bottom of the feeding frame (3) and located right below the two feeding slots (32), the outer side of the quantitative feeding bin (4) is fixed with a feeding bin lifting lug (41), the bottom of the quantitative feeding bin (4) is fixed with a feeding pipe (42) through a flange plate, and the bottom of the feeding pipe (42) is fixed with a spiral conveying auger (5).

5. The precision dosing reaction apparatus of claim 4, wherein: The top of the spiral conveying auger (5) is fixed with an auger lifting lug (51), the auger lifting lug (51) and the feeding bin lifting lug (41) are connected through a steel cable (52), the inner wall of the spiral conveying auger (5) is fixed with a separation sealing plate (53), and the inner cavity of the spiral conveying auger (5) is separated into a first feeding pipe (531) and a second feeding pipe (532) by the separation sealing plate (53), the inside of the separation sealing plate (53) is rotatably connected with a rotating shaft (54), one end of the rotating shaft (54) close to the feeding plate (31) penetrates through the spiral conveying auger (5) and is installed with a driving motor (55) through a flange plate; The surface of the two ends of the rotating shaft (54) is fixed with a spiral plate (56), the surface of the side of the spiral conveying auger (5) close to the first feeding pipe (531) is fixed with a first discharging pipe (57), and the surface of the side of the spiral conveying auger (5) close to the second feeding pipe (532) is fixed with a second discharging pipe (571).

6. The precision dosing reaction apparatus of claim 5, wherein: Two mixing hoppers (6) are fixed and communicated with the first discharging pipe (57) and the second discharging pipe (571), the surface of the mixing hopper (6) is fixed with a hopper supporting leg (61), the bottom of the hopper supporting leg (61) is fixed with a hopper weighing module (62), the hopper weighing module (62) is fixed at the top of the second floor (12), the first discharging pipe (57) and the second discharging pipe (571) are communicated with the mixing hopper (6) through a feeding inlet (63), and the bottom of the mixing hopper (6) is fixed with the interlocking discharging valve (28) through a flange plate.

7. The reaction apparatus for precise dosing according to claim 1, characterized in that: The inner wall of the mixing hopper (6) is fixed with a quarter division fixing frame (76), the center top rod (74) is slidably connected with the quarter division fixing frame (76), the inside of each division plate of the quarter division fixing frame (76) is slidably and sealingly connected with a linkage rod (77), the surface of the linkage rod (77) is fixed with a limiting plate (771), the surface of the center top rod (74) located above the quarter division fixing frame (76) is fixed with a squeezing ring (78), the surface of the side edge of the squeezing ring (78) is fixed with a squeezing plate (79), and the number and position of the squeezing plates (79) correspond to the division plates of the quarter division fixing frame (76).

8. The precision dosing reaction apparatus of claim 7, wherein: The inner cavity of each sub-plate of the quartered fixing frame (76) is fixed with a partition plate (8), and the inner cavity of each sub-plate is divided into a receiving cavity (81) and a sliding cavity (82) by the partition plate (8), the sliding cavity (82) is slidably connected with a knocking block (83), the knocking block (83) abuts against the inner wall of the mixing hopper (6), the third spring (84) is fixed to the top and the bottom of the side of the knocking block (83) close to the partition plate (8), and the third spring (84) is fixed to the partition plate (8); The middle part of the side of the knocking block (83) close to the partition plate (8) is fixed with a steel wire rope (85), the steel wire rope (85) passes through the partition plate (8) and the linkage rod (77), and one end of the steel wire rope (85) is fixed to the inner wall of the receiving cavity (81).

9. The precision dosing reaction apparatus of claim 1, wherein: The top of the feeding frame (3) is provided with a quantitative feeding trolley (9), the bottom of the quantitative feeding trolley (9) is rotatably connected with a roller set (91), the top of the quantitative feeding trolley (9) is fixed with a protective fence (92), one side of the protective fence (92) is fixed with a handrail (93), and the top of the handrail (93) is fixed with a handrail (94); The middle part of the bottom end of the quantitative feeding trolley (9) is provided with a pulling slot (95), both sides of the pulling slot (95) are fixed with a sliding rail (96), the sliding rail (96) is slidably connected with a sealing baffle (97), the bottom of one end of the sealing baffle (97) is fixed with a pulling plate (98), the inside of the top of the quantitative feeding trolley (9) is clamped with a loading box (99) on the inner side of the protective fence (92), the bottom of the loading box (99) is provided with a material port, and the material port is communicated with the pulling slot (95).

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