A mixing device for the production of vehicle urea solution

Abstract

The present invention discloses a mixing device for producing automotive urea liquid, and relates to the technical field of automotive urea liquid processing. The present invention comprises a mixing tank, a raw material barrel is fixed on the top of the mixing tank through a bracket, a liquid input pipe is fixed on the side wall of the raw material barrel, the bottom of the inner wall of the raw material barrel is conical, and two feeding pipes are fixed between the top of the mixing tank and the bottom of the raw material barrel. The present invention uses the setting of a pretreatment device to make the stirring blade rod, the blooming disc, the arc block ring, and the abutment rod cooperate to drive the conical mesh cylinder to screen the urea raw material, and the smaller particles of urea will fall directly into the soft water, and the grinding roller and the grinding teeth of the conical mesh cylinder will grind and crush the larger particles of urea, and the ground and crushed urea will fall into the soft water. By directly putting the smaller particles of urea into the soft water and grinding and crushing the larger particles of urea before putting them into the soft water, the grinding time can be reduced and the overall production efficiency of the automotive urea liquid can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle urea solution processing, and specifically to a mixing device for producing vehicle urea solution. Background Technique

[0002] A mixing device for producing vehicle urea solution is a device used to mix high-purity urea and deionized water in a certain proportion. It is widely used in the manufacture of vehicle urea solution used in the SCR (Selective Catalytic Reduction) system, which helps to reduce nitrogen oxides emitted by vehicles and meets environmental protection requirements.

[0003] Chinese Patent with Patent Publication No. CN219502524U discloses a vehicle urea mixing production device, belonging to the technical field of vehicle urea processing. Specifically, it is a vehicle urea mixing production device, including a mixing and stirring main body and a motor rotating shaft. Inside the mixing and stirring main body, there is a material transfer box. Outside the motor rotating shaft near the upper end, there is a rolling roller for rolling materials. At the upper end of the rolling roller, there is a material guiding slope for guiding the materials downward. On one side of the upper end of the mixing and stirring main body, there is a urea feeding port. Through the arrangement of the rolling roller outside the motor rotating shaft and the material transfer box sleeved outside, the urea particles can be guided into the interior of the material transfer box through the guide pipe and crushed and ground by the rolling roller, and then slide downward, so that it can be directly fused with the internal soft water to improve the mixing efficiency. At the same time, part of the water quality can be guided into the interior of the material transfer box through the shunt pipe for flushing to prevent some materials from adhering to the inner wall and being difficult to fall off by themselves.

[0004] However, the current mixing device has the following problems: When the mixing device is working, it will crush and grind the urea raw materials through the rolling roller and then perform the feeding operation. The feeding efficiency of this method is relatively low. For smaller particles of urea, which are already in a form that is relatively easy to dissolve, they can be directly put into soft water for mixing. If the smaller particles of urea are crushed again, the feeding efficiency of the urea raw materials will be greatly reduced, thereby reducing the production efficiency of vehicle urea solution. Therefore, we have proposed a mixing device for producing vehicle urea solution. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a mixing device for producing vehicle urea solution, which solves the problems raised in the above background technique.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A mixing device for producing vehicle urea solution, including a mixing tank. The top of the mixing tank is fixed with a raw material barrel through a bracket. A liquid input pipe is fixed at the side wall of the raw material barrel. The bottom of the inner wall of the raw material barrel is conically arranged. Two feed pipes are fixed between the top of the mixing tank and the bottom of the raw material barrel. Due to the conical arrangement of the bottom of the inner wall of the raw material barrel, it is beneficial for the raw materials in the raw material barrel to be discharged from the feed pipes. A stirring blade rod is rotatably installed inside the mixing tank, and the stirring blade rod is driven by a motor. A pretreatment device is arranged above the inside of the mixing tank. The pretreatment device includes a plurality of elastic telescopic columns uniformly fixed on the top of the inner wall of the mixing tank in a circumferential manner, a grinding roller fixed on the outer wall above the stirring blade rod, and a flowering disc fixed on the outer wall above the stirring blade rod. A conical mesh cylinder is fixed between the bottom ends of the telescopic ends of the plurality of elastic telescopic columns. A circular groove is provided in the middle of the conical mesh cylinder, and grinding teeth are fixed on the inner wall of the circular groove of the conical mesh cylinder. The grinding roller is located inside the circular groove of the conical mesh cylinder. An arc block ring is fixed at the bottom of the flowering disc. Two contact rods are uniformly fixed on the top of the conical mesh cylinder in a circumferential manner. A plurality of arc blocks are uniformly fixed on the bottom of the arc block ring in a circumferential manner. The top of the contact rod is located on the movement track of the arc blocks of the arc block ring. The stirring blade rod drives the arc block ring to rotate through the flowering disc. The plurality of arc blocks of the arc block ring push the contact rod to drive the conical mesh cylinder to move downward, and the conical mesh cylinder drives the telescopic ends of the elastic telescopic columns to stretch. When the plurality of arc blocks of the arc block ring no longer push the contact rod, under the elastic force of the elastic telescopic columns, the telescopic ends of the elastic telescopic columns drive the conical mesh cylinder to reset and move upward. So on and so forth, thus making the conical mesh cylinder shake up and down, and the conical mesh cylinder screens the urea raw materials falling on it.

[0007] According to the above technical solution, a notch is provided on the outer wall of the flowering disc. The discharge port of the feed pipe is located on the movement track of the notch of the flowering disc. At the same time, when the flowering disc rotates, when the notch of the flowering disc moves to the position below the feed pipe, the urea raw materials transported by the feed pipe can fall on the conical mesh cylinder at this time. When the notch of the flowering disc is not at the position below the feed pipe, the flowering disc blocks the discharge port of the feed pipe, and the urea raw materials transported by the feed pipe cannot be discharged at this time.

[0008] According to the above technical solution, the pretreatment device further includes three elastic telescopic push rods, three arc rods, and two arc blocking rods. The fixed ends of the three elastic telescopic push rods are uniformly fixed on the bottom of the flowering disc in a circumferential manner. The three arc rods are respectively fixed at the bottom ends of the telescopic ends of the three elastic telescopic push rods. The two arc blocking rods are respectively fixed on both sides of the top of the conical mesh cylinder. During the process that the urea raw materials fall on the grinding roller along the inclined surface of the conical mesh cylinder, the arc blocking rods increase the moving stroke of the urea raw materials on the conical mesh cylinder and increase the contact time between the urea raw materials and the screen of the conical mesh cylinder.

[0009] According to the above technical solution, a dispersion device is provided at the bottom of the conical mesh cylinder. The dispersion device includes a rotating ring and a plurality of U-shaped spreading plates. The rotating ring is rotatably installed on the outer wall of the lower part of the conical mesh cylinder. A plurality of the U-shaped spreading plates are circumferentially and evenly hinged on the outer wall of the stirring blade rod. At both sides of the top of each of the U-shaped spreading plates, chute plates are fixedly provided. A plurality of T-shaped rods are circumferentially and evenly fixed at the bottom of the rotating ring. The bottom of the T-shaped rod is slidably installed between the interiors of two adjacent chute plates. Some of the urea after grinding and crushing will fall into the U-shaped spreading plates. When the stirring blade rod rotates, the stirring blade rod drives the U-shaped spreading plates to rotate. The U-shaped spreading plates drive the T-shaped rods to rotate through the chute plates. The T-shaped rods drive the rotating ring to rotate outside the conical mesh cylinder. Each time the conical mesh cylinder reciprocates up and down, the conical mesh cylinder pushes the rotating ring to drive the T-shaped rods to reciprocate up and down. The T-shaped rods slide along the interiors of the chute plates, and the T-shaped rods push the chute plates to drive the U-shaped spreading plates to swing up and down.

[0010] According to the above technical solution, a blanking device is provided at the feed pipe. The blanking device includes a large gear ring and two small gear rings. The large gear ring is fixed on the top of the blooming disc. The two small gear rings are respectively rotatably installed at the bottoms of the two feed pipes. At the inner walls of the two small gear rings, a rotating rod is fixed through a bracket. At the outer wall of the upper part of the rotating rod, a spiral blade is fixedly provided. When the blooming disc rotates, it drives the large gear ring to rotate. The large gear ring drives the small gear rings to rotate. The small gear rings drive the rotating rod to rotate. The rotating rod drives the spiral blade to rotate. The spiral blade drives the raw materials in the raw material barrel to be conveyed into the feed pipe. The spiral blade can continuously push the raw materials during the rotation process.

[0011] According to the above technical solution, the blanking device further includes two L-shaped shells, two oval groove discs, and a plurality of elastic sheets. The two L-shaped shells are respectively fixed on both sides of the raw material barrel. An L-shaped column rod is slidably installed in each of the two L-shaped shells. At the bottom of the horizontal cross bar of the L-shaped column rod, a sliding column is fixedly provided. The two oval groove discs are respectively fixed on the tops of the two rotating rods, and an oval groove is provided at the top of the oval groove disc. The sliding column of the L-shaped column rod is slidably installed in the oval groove of the oval groove disc. One ends of the plurality of elastic sheets are respectively fixed at the inner wall of the feed pipe. The other ends of the plurality of elastic sheets penetrate through the inner wall of the feed pipe, and the other ends of the plurality of elastic sheets are fixed at the lower outer wall of the L-shaped column rod. When the rotating rod rotates, the rotating rod drives the oval groove disc to rotate. The oval groove of the oval groove disc pushes the sliding column of the L-shaped column rod to drive the L-shaped column rod to reciprocate along the interior of the L-shaped shell. When the L-shaped column rod moves away from the raw material barrel, the L-shaped column rod pulls the elastic sheet to move along with it, and the elastic sheet is straightened, so that the elastic sheet moves dynamically inside the feed pipe.

[0012] The present invention provides a mixing device for producing vehicle urea solution. It has the following beneficial effects:

[0013] (1) The present invention sets a pretreatment device so that the stirring blade rod, the flower disk, the arc block ring, and the abutment rod cooperate to drive the conical mesh cylinder to screen the urea raw material. The smaller particles of urea will fall directly into the soft water. The grinding teeth of the grinding roller and the conical mesh cylinder will grind and crush the larger particles of urea. The ground and crushed urea will fall into the soft water. By directly putting the smaller particles of urea into the soft water and grinding and crushing the larger particles of urea before putting them into the soft water, the grinding time can be reduced and the overall production efficiency of the automotive urea liquid can be improved. At the same time, the notch of the flower disk can intermittently open and close the outlet of the feed pipe. The material opening is closed, so that the urea raw material will not be continuously and massively accumulated on the conical mesh cylinder, reducing the blockage problem of the conical mesh cylinder caused by the accumulation of raw materials; at the same time, the arc baffle increases the moving stroke of the urea raw material on the conical mesh cylinder, and increases the contact time between the urea raw material and the conical mesh cylinder screen, which means that the urea raw material has more time to pass through the screen during the screening process, thereby improving the screening effect; the blooming disc and the elastic telescopic push rod cooperate to drive the arc rod to push the urea raw material at the arc baffle rod to be dispersed on the conical mesh cylinder screen, thereby further improving the screening effect of the conical mesh cylinder on the urea raw material.

[0014] (2) The present invention provides a dispersion device so that the stirring blade, the U-shaped spreading plate, the chute plate, the T-shaped rod, and the swivel cooperate to drive the U-shaped spreading plate to swing up and down, so that the U-shaped spreading plate dynamically puts the ground urea into the soft water, so that the urea raw material can be evenly dispersed in a shorter time, which helps to ensure that the dissolution and absorption of urea in the soft water are more uniform.

[0015] (3) The present invention sets a feeding device so that the flower disk, the large tooth ring, the small tooth ring, and the rotating rod cooperate to drive the spiral blade to rotate, and the spiral blade drives the raw material in the raw material barrel to be transported into the feed pipe. The spiral blade can continuously push the raw material during the rotation process, instead of relying on the gravity of the urea raw material or external force to directly push the urea raw material to flow. In this way, the urea can be effectively prevented from being blocked or stuck in the feed pipe due to uneven particles. At the same time, the rotating rod, the elliptical groove disk, the L-shaped column rod, and the L-shaped shell cooperate to drive the elastic sheet to move dynamically inside the feed pipe. The dynamic movement of the elastic sheet inside the feed pipe can help break up the accumulation or agglomeration of the raw material. Since the elastic sheet is constantly straightening, it can slightly vibrate or push the urea raw material through its physical action, thereby increasing the fluidity of the urea raw material in the feed pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the present invention as a whole;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of the present invention;

[0018] Figure 3 A partial cross-sectional view of the pretreatment device of the present invention Figure 1 ;

[0019] Figure 4 A partial cross-sectional view of the pretreatment device of the present invention Figure 2 ;

[0020] Figure 5 For the present invention Figure 3 A schematic diagram of the structure at A;

[0021] Figure 6 It is a schematic diagram of the feeding device of the present invention;

[0022] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at B.

[0023] In the figure: 1. mixing tank; 2. raw material barrel; 21. feed pipe; 3. stirring blade rod; 4. pretreatment device; 41. elastic telescopic column; 42. conical mesh cylinder; 43. grinding roller; 44. arc block ring; 45. resistance rod; 46. flower disk; 47. elastic telescopic push rod; 48. arc rod; 49. arc blocking rod; 5. dispersion device; 51. swivel; 52. T-shaped rod; 53. slide plate; 54. U-shaped throwing plate; 6. unloading device; 61. large tooth ring; 62. small tooth ring; 63. rotating rod; 64. spiral blade; 65. L-shaped shell; 66. elliptical groove plate; 67. L-shaped column rod; 68. elastic sheet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1 - Figure 7, an embodiment of the present invention is: a mixing device for producing vehicle urea solution, including a mixing tank 1. A raw material barrel 2 is fixed to the top of the mixing tank 1 through a bracket. A liquid input pipe is fixed to the side wall of the raw material barrel 2. The bottom of the inner wall of the raw material barrel 2 is arranged in a conical shape. Two feed pipes 21 are fixed between the top of the mixing tank 1 and the bottom of the raw material barrel 2. Due to the conical arrangement of the bottom of the inner wall of the raw material barrel 2, it is beneficial for the raw materials in the raw material barrel 2 to be discharged from the feed pipes 21. A stirring blade rod 3 is rotatably installed inside the mixing tank 1, and the stirring blade rod 3 is driven by a motor. A pretreatment device 4 is arranged above the inside of the mixing tank 1. The pretreatment device 4 includes a plurality of elastic telescopic columns 41 evenly fixed around the top of the inner wall of the mixing tank 1, a grinding roller 43 fixed to the outer wall above the stirring blade rod 3, and a blooming disc 46 fixed to the outer wall above the stirring blade rod 3. A conical mesh cylinder 42 is fixed between the bottom ends of the telescopic ends of the plurality of elastic telescopic columns 41. A circular groove is provided in the middle of the conical mesh cylinder 42, and grinding teeth are fixed to the inner wall of the circular groove of the conical mesh cylinder 42. The grinding roller 43 is located inside the circular groove of the conical mesh cylinder 42. An arc block ring 44 is fixed to the bottom of the blooming disc 46. Two abutting rods 45 are evenly fixed around the top of the conical mesh cylinder 42. The top of the abutting rod 45 is located on the movement track of the arc blocks of the arc block ring 44. Through the setting of the above structure, the conical mesh cylinder 42 shakes up and down, and the conical mesh cylinder 42 screens the urea raw materials falling on it. The smaller particles of urea will directly fall into the soft water, while the larger particles of urea will fall along the inclined surface of the conical mesh cylinder 42 to the grinding roller 43. When the stirring blade rod 3 rotates, it will drive the grinding roller 43 to rotate. The grinding roller 43 and the grinding teeth of the conical mesh cylinder 42 will grind and crush the larger particles of urea. The ground and crushed urea will fall into the soft water. By directly putting the smaller particles of urea into the soft water and putting the larger particles of urea after grinding and crushing, the crushing time can be reduced, and the overall production efficiency of the vehicle urea solution can be improved.

[0026] A notch is provided on the outer wall of the blooming disc 46, and the discharge port of the feed pipe 21 is located on the movement track of the notch of the blooming disc 46. Through the setting of the above structure, the blooming disc 46 intermittently opens and closes the discharge port of the feed pipe 21, so that the urea raw materials will not continuously accumulate in large quantities on the conical mesh cylinder 42, reducing the blockage problem of the conical mesh cylinder 42 caused by the accumulation of raw materials.

[0027] The pretreatment device 4 further includes three elastic telescopic push rods 47, three arc-shaped rods 48, and two arc-shaped retaining rods 49. The fixed ends of the three elastic telescopic push rods 47 are circumferentially and uniformly fixed to the bottom of the blooming disc 46. The three arc-shaped rods 48 are respectively fixed to the bottom of the telescopic ends of the three elastic telescopic push rods 47. The two arc-shaped retaining rods 49 are respectively fixed to both sides of the top of the conical mesh cylinder 42. Through the setting of the above structure, the arc-shaped retaining rods 49 increase the moving stroke of the urea raw material on the conical mesh cylinder 42 and increase the contact time between the urea raw material and the screen of the conical mesh cylinder 42. This means that the urea raw material has more time to pass through the screen during the screening process, improving the screening effect. When the blooming disc 46 rotates, the blooming disc 46 drives the arc-shaped rod 48 to rotate through the elastic telescopic push rod 47, and the arc-shaped rod 48 pushes the urea raw material at the arc-shaped retaining rod 49 to be dispersed on the screen of the conical mesh cylinder 42, thereby further improving the screening effect of the conical mesh cylinder 42 on the urea raw material.

[0028] A dispersion device 5 is provided at the bottom of the conical mesh cylinder 42. The dispersion device 5 includes a rotating ring 51 and a plurality of U-shaped spreading plates 54. The rotating ring 51 is rotatably installed on the outer wall below the conical mesh cylinder 42. The plurality of U-shaped spreading plates 54 are circumferentially and uniformly hinged to the outer wall of the stirring blade rod 3. Both sides of the top of the plurality of U-shaped spreading plates 54 are fixedly provided with chute plates 53. A plurality of T-shaped rods 52 are circumferentially and uniformly fixed to the bottom of the rotating ring 51. The bottom of the T-shaped rod 52 is slidably installed between the interiors of two adjacent chute plates 53. Through the setting of the above structure, the U-shaped spreading plates 54 swing up and down, so that the U-shaped spreading plates 54 dynamically put the ground and pulverized urea into the soft water, so that the urea raw material can be evenly dispersed in a relatively short time, which helps to ensure that the dissolution and absorption of urea in the soft water are more uniform.

[0029] When in use, soft water is input into the interior of the mixing tank 1 through the liquid input pipe of the raw material barrel 2, and the urea raw material is put into the raw material barrel 2. The urea raw material is input into the mixing tank 1 through the feed pipe 21, and then the stirring blade rod 3 is driven by the motor to rotate, and the stirring blade rod 3 stirs and mixes the liquid inside the mixing tank 1. In the process of the urea raw material being input into the interior of the mixing tank 1, the urea raw material will first fall onto the conical mesh tube 42. In the process of the stirring blade rod 3 rotating, the stirring blade rod 3 drives the arc block ring 44 to rotate through the blooming disk 46, and several arc blocks of the arc block ring 44 push the resistance rod 45 to drive the conical mesh tube 42 to move downward, and the conical mesh tube 42 drives the telescopic end of the elastic telescopic column 41 to stretch. When several arc blocks of the arc block ring 44 When the arc block no longer pushes the abutment rod 45, under the elastic force of the elastic telescopic column 41, the telescopic end of the elastic telescopic column 41 drives the conical mesh cylinder 42 to reset and move upward, and so on, so that the conical mesh cylinder 42 shakes up and down, and the conical mesh cylinder 42 screens the urea raw materials falling thereon, and the smaller particles of urea will fall directly into the soft water, while the larger particles of urea will fall on the grinding roller 43 along the inclined surface of the conical mesh cylinder 42. When the stirring blade rod 3 rotates, it will drive the grinding roller 43 to rotate, and the grinding teeth of the grinding roller 43 and the conical mesh cylinder 42 will grind and crush the larger particles of urea, and the ground and crushed urea will fall into the soft water. By directly putting the smaller particles of urea into the soft water and grinding and crushing the larger particles of urea before putting them into the soft water, it can The crushing time can be reduced and the production efficiency of the overall automotive urea liquid can be improved; at the same time, when the flowering disc 46 rotates, when the notch of the flowering disc 46 moves to the position below the feed pipe 21, the urea raw material transmitted by the feed pipe 21 can fall on the conical mesh cylinder 42 at this time, and when the notch of the flowering disc 46 is not at the position below the feed pipe 21, the flowering disc 46 blocks the discharge port of the feed pipe 21, and the urea raw material transmitted by the feed pipe 21 cannot be discharged at this time, and so on and so forth, so that the flowering disc 46 intermittently opens and closes the discharge port of the feed pipe 21, so that the urea raw material will not be continuously and massively accumulated on the conical mesh cylinder 42, reducing the blockage problem of the conical mesh cylinder 42 caused by the accumulation of raw materials; when the urea raw material moves along the inclined surface of the conical mesh cylinder 42 In the process of falling on the grinding roller 43, the arc baffle rod 49 increases the moving stroke of the urea raw material on the conical mesh cylinder 42, and increases the contact time between the urea raw material and the screen of the conical mesh cylinder 42, which means that the urea raw material has more time to pass through the screen during the screening process, thereby improving the screening effect. When the flowering disc 46 rotates, the flowering disc 46 drives the arc rod 48 to rotate through the elastic telescopic push rod 47, and the arc rod 48 pushes the urea raw material at the arc baffle rod 49 to be dispersed on the screen of the conical mesh cylinder 42, thereby further improving the screening effect of the conical mesh cylinder 42 on the urea raw material. It should be noted that under the elastic force of the elastic telescopic push rod 47, the telescopic end of the elastic telescopic push rod 47 always pushes the arc rod 48 to resist the top surface of the conical mesh cylinder 42.

[0030] Part of the ground urea will fall into the U-shaped spreading plate 54. When the stirring blade rod 3 rotates, the stirring blade rod 3 drives the U-shaped spreading plate 54 to rotate. The U-shaped spreading plate 54 drives the T-shaped rod 52 to rotate through the chute plate 53. The T-shaped rod 52 drives the rotating ring 51 to rotate outside the conical mesh cylinder 42. Each time the conical mesh cylinder 42 moves up and down reciprocally, the conical mesh cylinder 42 pushes the rotating ring 51 to drive the T-shaped rod 52 to move up and down reciprocally. The T-shaped rod 52 slides inside the chute plate 53, and the T-shaped rod 52 pushes the chute plate 53 to drive the U-shaped spreading plate 54 to swing up and down. Thus, the U-shaped spreading plate 54 dynamically puts the ground urea into the soft water, so that the urea raw material can be evenly dispersed in a relatively short time, which helps to ensure that the dissolution and absorption of urea in the soft water are more uniform. It should be noted that the height of the soft water level inside the mixing tank 1 is lower than that of the dispersing device 5.

[0031] Please refer to Figure 1 - Figure 7 , on the basis of the above embodiment, in another embodiment of the present invention, a blanking device 6 is provided at the feed pipe 21. The blanking device 6 includes a large gear ring 61 and two small gear rings 62. The large gear ring 61 is fixed on the top of the flowering disc 46, and the two small gear rings 62 are respectively rotatably installed at the bottoms of the two feed pipes 21. A rotating rod 63 is fixed at the inner walls of the two small gear rings 62 through brackets, and a spiral blade 64 is fixed on the outer wall above the rotating rod 63. Through the above structure, the spiral blade 64 drives the raw materials in the raw material barrel 2 to be conveyed into the feed pipe 21. The spiral blade 64 can continuously push the raw materials during rotation, rather than relying on the gravity of the urea raw materials or external forces to directly push the urea raw materials to flow. In this way, it can effectively avoid the phenomenon of blockage or jamming of urea in the feed pipe 21 due to uneven particles.

[0032] The blanking device 6 further includes two L-shaped shells 65, two oval groove discs 66, and a plurality of elastic pieces 68. The two L-shaped shells 65 are respectively fixed on both sides of the raw material barrel 2. An L-shaped column rod 67 is slidably installed inside each of the two L-shaped shells 65. A sliding column is fixed at the bottom of the horizontal cross-bar of the L-shaped column rod 67. The two oval groove discs 66 are respectively fixed on the tops of the two rotating rods 63, and an oval groove is opened at the top of the oval groove disc 66. The sliding column of the L-shaped column rod 67 is slidably installed inside the oval groove of the oval groove disc 66. One ends of the plurality of elastic pieces 68 are respectively fixed at the inner walls of the feed pipe 21, and the other ends of the plurality of elastic pieces 68 penetrate the inner wall of the feed pipe 21, and the other ends of the plurality of elastic pieces 68 are fixed at the outer wall below the L-shaped column rod 67. Through the above structure, the elastic pieces 68 move dynamically inside the feed pipe 21. The dynamic movement of the elastic pieces 68 inside the feed pipe 21 can help to break the accumulation or caking of the raw materials. Since the elastic pieces 68 are constantly straightened, they can slightly vibrate or push the urea raw materials through their physical effects, thereby increasing the fluidity of the urea raw materials in the feed pipe 21.

[0033] During use, when the flowering disc 46 rotates, it drives the large gear ring 61 to rotate. The large gear ring 61 drives the small gear ring 62 to rotate. The small gear ring 62 drives the rotating rod 63 to rotate. The rotating rod 63 drives the spiral blade 64 to rotate. The spiral blade 64 drives the raw materials in the raw material barrel 2 to be conveyed into the feed pipe 21. The spiral blade 64 can continuously push the raw materials during rotation, rather than relying on the gravity of the urea raw materials or an external force to directly push the urea raw materials to flow. In this way, it can effectively avoid the phenomenon of blockage or jamming of urea in the feed pipe 21 due to uneven particles; when the rotating rod 63 rotates, the rotating rod 63 drives the oval groove disc 66 to rotate. The oval groove of the oval groove disc 66 pushes the sliding column of the L-shaped column rod 67 to drive the L-shaped column rod 67 to reciprocate inside the L-shaped shell 65. When the L-shaped column rod 67 moves away from the raw material barrel 2, the L-shaped column rod 67 pulls the elastic sheet 68 to move along. The elastic sheet 68 is straightened, so that the elastic sheet 68 moves dynamically inside the feed pipe 21. The dynamic movement of the elastic sheet 68 inside the feed pipe 21 can help break the accumulation or caking of the raw materials. Since the elastic sheet 68 continuously undergoes a straightening movement, it can slightly vibrate or push the urea raw materials through its physical action, thereby increasing the fluidity of the urea raw materials in the feed pipe 21.

[0034] As described above, it is only a preferred specific embodiment 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 of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A mixing device for producing vehicle urea solution, comprising a mixing tank (1), a raw material barrel (2) is fixed on the top of the mixing tank (1) through a bracket, two feed pipes (21) are fixed between the top of the mixing tank (1) and the bottom of the raw material barrel (2), a stirring blade rod (3) is rotatably installed inside the mixing tank (1), and the stirring blade rod (3) is driven by a motor, and it is characterized in that: Above the interior of the mixing tank (1), a pretreatment device (4) is provided. The pretreatment device (4) includes a number of elastic telescopic columns (41) uniformly fixed around the top of the inner wall of the mixing tank (1), a grinding roller (43) fixed to the outer wall above the stirring blade rod (3), and a flowering plate (46) fixed to the outer wall above the stirring blade rod (3). Between the bottom ends of the telescopic ends of the number of elastic telescopic columns (41), a conical mesh cylinder (42) is fixed. A circular groove is provided in the middle of the conical mesh cylinder (42), and grinding teeth are fixed to the inner wall of the circular groove of the conical mesh cylinder (42). The grinding roller (43) is located inside the circular groove of the conical mesh cylinder (42). An arc block ring (44) is fixed to the bottom of the flowering plate (46). Two abutting rods (45) are uniformly fixed around the top of the conical mesh cylinder (42). Below the bottom of the conical mesh cylinder (42), a dispersion device (5) is provided. The dispersion device (5) includes a rotating ring (51) and a number of U-shaped spreading plates (54). The rotating ring (51) is rotatably installed on the outer wall below the conical mesh cylinder (42). The number of U-shaped spreading plates (54) are uniformly hinged to the outer wall of the stirring blade rod (3). On both sides of the top of the number of U-shaped spreading plates (54), chute plates (53) are fixed. A number of T-shaped rods (52) are uniformly fixed around the bottom of the rotating ring (51). The bottom of the T-shaped rod (52) is slidably installed between the interiors of two adjacent chute plates (53).

2. The mixing device for producing vehicle urea solution according to claim 1, characterized in that: A number of arc blocks are uniformly fixed around the bottom of the arc block ring (44). The top of the abutting rod (45) is located on the movement track of the arc blocks of the arc block ring (44).

3. The mixing device for producing vehicle urea solution according to claim 1, characterized in that: A notch is provided on the outer wall of the flowering plate (46). The discharge port of the feed pipe (21) is located on the movement track of the notch of the flowering plate (46).

4. A mixing device for producing vehicle urea solution according to claim 1, characterized in that: The bottom inner wall of the raw material barrel (2) is conically arranged.

5. A mixing device for producing vehicle urea solution according to claim 1, characterized in that: The pretreatment device (4) further includes three elastic telescopic push rods (47), three arc rods (48), and two arc blocking rods (49). The fixed ends of the three elastic telescopic push rods (47) are uniformly fixed around the bottom of the flowering plate (46). The three arc rods (48) are respectively fixed to the bottom ends of the telescopic ends of the three elastic telescopic push rods (47). The two arc blocking rods (49) are respectively fixed to both sides of the top of the conical mesh cylinder (42).

6. The mixing device for producing vehicle urea solution according to claim 1, wherein: At the feed pipe (21), a feeding device (6) is provided. The feeding device (6) includes a large gear ring (61) and two small gear rings (62). The large gear ring (61) is fixed to the top of the flowering plate (46). The two small gear rings (62) are respectively rotatably installed at the bottom of the two feed pipes (21). A rotating rod (63) is fixed to the inner wall of the two small gear rings (62) through a bracket. A spiral blade (64) is fixed to the outer wall above the rotating rod (63).

7. The mixing device for producing vehicle urea solution according to claim 6, characterized in that: The blanking device (6) further includes two L-shaped shells (65), two oval groove discs (66), and a number of elastic sheets (68). The two L-shaped shells (65) are respectively fixed on both sides of the raw material barrel (2). An L-shaped column rod (67) is slidably installed inside each of the two L-shaped shells (65). A sliding column is fixed to the bottom of the horizontal branch rod of the L-shaped column rod (67). The two oval groove discs (66) are respectively fixed on the tops of the two rotating rods (63), and an oval groove is formed in the top of the oval groove disc (66). The sliding column of the L-shaped column rod (67) is slidably installed inside the oval groove of the oval groove disc (66). One ends of the number of elastic sheets (68) are respectively fixed to the inner wall of the feed pipe (21), and the other ends of the number of elastic sheets (68) penetrate through the inner wall of the feed pipe (21), and the other ends of the number of elastic sheets (68) are fixed to the outer wall below the L-shaped column rod (67).

Images