A urea finished product cooling apparatus

Abstract

The present application relates to cooling equipment technical field, and discloses a kind of urea finished product cooling equipment, comprising: cooling mechanism, which can cool urea finished product particle;Supporting assembly, which can support cooling mechanism;Vibration equipment, which can drive urea finished product particle vibration in the process that cooling mechanism cools urea finished product particle;Screening crushing mechanism, which can crush urea finished product particle block that urea finished product particle block is caked in the process that cooling mechanism cools urea finished product particle.This kind of urea finished product cooling equipment, by setting heat preservation assembly, core components such as cooling mechanism, supporting assembly, vibration equipment and screening crushing mechanism are completely contained in the cavity of first box body, and this closed structure ensures that urea finished product is in relatively sealed environment in the whole cooling process, fundamentally reduces the dust flying condition caused by forced air cooling, not only improves product yield, but also saves high energy consumption tail gas dust removal treatment equipment in rear end.

Description

Technical Field

[0001] This invention relates to the field of cooling equipment technology, specifically to a urea product cooling equipment. Background Technology

[0002] Urea, a high-nitrogen fertilizer, is one of the most widely used chemical nitrogen fertilizers in agricultural production due to its high nitrogen content, neutral properties, and wide applicability. Granulation is a crucial step in the urea production process, forming the final product. Freshly granulated urea granules are typically at a high temperature, generally between 70°C and 90°C. Because urea itself has strong hygroscopicity and thermal instability, if these high-temperature granules are directly packaged without effective cooling, the residual moisture and latent heat inside the granules will migrate and recrystallize within the packaging bag. This "secondary crystallization" phenomenon causes the originally distinct granules to clump together into hard lumps during storage and transportation, greatly increasing the difficulty of application for farmers and severely impacting the product's market competitiveness.

[0003] Existing urea cooling technologies mainly include natural air cooling in granulation towers and forced air cooling in fluidized beds. These technologies primarily rely on heat exchange between ambient air and the granules. However, in actual production processes, this traditional cooling mode presents the following technical problems:

[0004] First, cooling efficiency is greatly affected by the environment and climate. In the hot summer or rainy and humid season, the wet-bulb temperature of the ambient air rises and the cooling capacity decreases significantly. At this time, the moisture in the ambient air is easily absorbed by the high-temperature urea particles, which makes it impossible for the cooling effect to meet the temperature index required for packaging. In fact, the particle surface may even deliquesce and stick together during the cooling process.

[0005] Secondly, dust pollution and energy consumption are prominent issues. During the operation of traditional forced air-cooled fluidized beds, the high-speed airflow blows up a large amount of fine urea powder, which not only causes material loss and reduces the yield, but also requires the additional high-energy-consuming exhaust gas dust removal system at the back end to prevent environmental pollution, increasing the company's equipment investment and operating costs.

[0006] Therefore, developing a urea particle cooling device that can adapt to different environments and climates, has high cooling efficiency, and can effectively prevent dust from flying is an urgent problem to be solved in the current urea production technology field. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a urea product cooling device that can cool the urea product without blowing up a large amount of fine urea powder.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a urea product cooling device, comprising:

[0009] Cooling mechanism, which is capable of cooling finished urea granules;

[0010] Support components that support the cooling mechanism;

[0011] Vibration equipment, which can drive the urea granules to vibrate during the cooling process of the cooling mechanism.

[0012] The screening and crushing mechanism is capable of crushing urea granules that agglomerate during the cooling process of the urea granules.

[0013] Furthermore, it also includes a heat insulation component, which can accurately guide the finished urea particles to be cooled into the cooling mechanism, and the cooling mechanism, support component, vibrating equipment and screening and crushing mechanism are all located inside the heat insulation component.

[0014] Furthermore, the insulation component includes a first housing and a feeding hopper. The feeding hopper has a funnel-shaped cross-section on the first surface, which is perpendicular to the horizontal plane. The narrower end of the funnel-shaped feeding hopper faces downwards and is fixedly connected to the upper surface of the first housing. The interior of the first housing forms a cavity, in which the cooling mechanism, support assembly, vibration equipment, and screening and crushing mechanism are all located.

[0015] Furthermore, the vibrating device is a vibrating motor, and the outer wall of the vibrating device is connected to the support assembly.

[0016] Furthermore, the support assembly includes a second plate, two first plates, two third plates, a plurality of first springs, and a plurality of second springs. The lower ends of the plurality of second springs are all fixedly connected to the bottom surface of the cavity. The plurality of second springs are divided into two groups. The upper ends of the two groups of second springs are respectively fixedly connected to the bottom surface of the two first plates. The upper surfaces of the two first plates are respectively fixedly connected to the lower ends of the two third plates. The upper ends of the two third plates are both connected to the cooling mechanism. The adjacent sides of the two third plates are respectively fixedly connected to the two sides of the second plate. The middle part of the second plate is fixedly connected to the outer wall of the vibrating device. The middle part of the second plate is also connected to the screening and crushing mechanism.

[0017] Furthermore, the cooling mechanism includes a circulating refrigeration device, several first tubes, two cooling components, two rectangular frames, several second tubes, and two third tubes. Several first channels are opened through one side of the lower end of the first housing. The outer wall of the circulating refrigeration device is fixedly connected to the inner wall of the cavity. The input and output ends of the circulating refrigeration device are respectively fixedly connected to one end of the two third tubes. The other ends of the two third tubes are respectively connected to the two cooling components, and the two cooling components are also connected to each other through several second tubes. The lower ends of the two rectangular frames are respectively connected to one end of the two cooling components. The upper ends of the two rectangular frames are respectively connected to the feeding hopper and the screening and crushing mechanism. The several first tubes are divided into two groups. The ends of the two cooling components away from the feeding hopper and the screening and crushing mechanism are respectively connected to the two groups of first tubes. One group of first tubes is connected to the screening and crushing mechanism, and the other group of first tubes passes through several first channels to the outside of the first housing. The two cooling components have an inclination angle with the horizontal plane, and the inclination directions of the two cooling components are opposite.

[0018] The inner walls of several first channels are fixedly connected with first elastic cloth, and the inner walls of several first elastic cloths are respectively fixedly connected to the outer walls of the second group of first tubes.

[0019] Furthermore, the cooling component includes a U-shaped frame, two insulation boards, two cold plates, and several blocks. The upper and lower sides of the U-shaped frame are fixedly connected to the adjacent sides of the two cold plates, and the sides of the two cold plates that are far apart from each other are fixedly connected to the adjacent sides of the two insulation boards. The lower end of the rectangular frame is fixedly connected to the upper surface of the U-shaped frame. Several equally spaced second elastic cloths are fixedly connected to the inner wall of the rectangular frame near the feeding hopper. The inner walls of the several second elastic cloths are all fixedly connected to the outer wall of the lower end of the feeding hopper. The cross-section of the several blocks on the second surface is triangular, and the second surface is parallel to the surface of the cold plate.

[0020] Several blocks are fixedly connected to the two adjacent sides of two cold plates on both sides. A second channel is formed between the U-shaped frame, the two cold plates and the several blocks. The feeding hopper, the first second channel, the first group of first pipes, the screening and crushing mechanism, the second second channel and the second group of first pipes are internally connected.

[0021] The interior of both cold plates forms flow channels, and the cross-section of the flow channels on the second surface is S-shaped. The flow channels of the two cold plates in the same cooling component and the two adjacent cold plates in the two cooling components are connected through the second tube. The two cold plates in the two cooling components that are far apart from each other are connected to the input and output ends of the circulating refrigeration equipment through the two third tubes.

[0022] Furthermore, the screening and crushing mechanism includes a hydraulic rod, a second box, a fourth plate, a mesh, an ultrasonic vibration generator, an extrusion assembly, and several rods. One end of the fourth plate is fixedly connected to the middle of the second plate, and the other end of the fourth plate is fixedly connected to the outer wall of the second box. The upper end of the second box is cylindrical, and the lower end of the second box is funnel-shaped. The extrusion assembly is located inside the upper end of the second box, and the lower end of the second box is fixedly connected to the inner wall of the rectangular frame located below.

[0023] The outer wall of the hydraulic rod is fixedly connected to the outer wall of the second box. The hydraulic rod is parallel to several rods. The output end of the hydraulic rod and the lower ends of several rods all penetrate into the interior of the second box and are connected to the upper end of the extrusion assembly. The output end of the hydraulic rod and the outer walls of several rods are slidably connected to the penetration point of the second box. The lower end of the extrusion assembly is fixedly connected to the outer wall of the mesh. The bottom surface of the mesh is connected to one end of the ultrasonic vibration generator. The other end of the ultrasonic vibration generator penetrates into the outside of the second box. The end of the first tube of the first group away from the cooling assembly is fixedly connected to and communicates with the second box.

[0024] The ultrasonic vibration generator includes an ultrasonic transducer that converts electrical energy into high-frequency mechanical vibration, an ultrasonic resonant ring that uniformly transmits the vibration generated by the ultrasonic transducer to the entire mesh, and an ultrasonic transmission cable that transmits the high-frequency electrical signal generated by the ultrasonic power supply to the ultrasonic transducer.

[0025] Furthermore, the extrusion assembly includes a first annular plate and a second annular plate. The outer wall of the first annular plate is fixedly connected to the inner wall of the upper end of the second housing. The inner wall of the first annular plate is fixedly connected to the outer wall of the mesh. The outer wall of the second annular plate is slidably connected to the inner wall of the upper end of the second housing. The upper surface of the second annular plate is fixedly connected to the output end of the hydraulic rod and the lower ends of several rods. Several extrusion ports are opened on the adjacent side of the first annular plate and the second annular plate, and the several extrusion ports of the first annular plate and the second annular plate are staggered.

[0026] Furthermore, a fifth plate is fixedly connected to the upper surface of the second annular plate, and a slope is formed on the surface of the fifth plate, with the lowest point of the slope located on the inner side.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This urea product cooling equipment, by setting up insulation components, completely houses the core components such as the cooling mechanism, support components, vibration equipment and screening and crushing mechanism in the cavity of the first box. This closed structure ensures that the urea product is in a relatively sealed environment throughout the entire cooling process, which fundamentally reduces the dust scattering caused by forced air cooling. This not only improves the product yield, but also eliminates the need for high-energy-consuming exhaust gas dust removal equipment at the back end.

[0029] This urea product cooling equipment, by being equipped with a vibration device and working in conjunction with the first and second springs in the support assembly, can generate continuous "bumping and jumping" during the cooling process. This dynamic vibration causes the contact point between the urea particles and the cold plate to change constantly, which breaks the heat accumulation between the particles and improves the heat exchange efficiency and cooling effect.

[0030] This urea product cooling equipment has several triangular blocks inside the cooling components, which force the material to move in an "S" shaped path. This ingenious design not only prolongs the residence and contact time of high-temperature urea particles between the cold plates, but also uses physical extrusion to initially break up small clumps caused by static electricity or trace moisture.

[0031] This urea product cooling equipment features a unique screening and crushing mechanism that combines ultrasonic vibration and hydraulic mechanical extrusion. The ultrasonic vibration generator drives the mesh to vibrate at high frequency, allowing unagglomerated particles to pass through quickly. For larger agglomerates, the hydraulic rod drives the first and second annular plates of the extrusion assembly to perform staggered extrusion and crushing. This dynamic cyclic crushing mechanism ensures that the discharged urea product has a uniform particle size and eliminates the risk of agglomeration during storage and transportation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall appearance of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the thermal insulation component of the present invention;

[0034] Figure 3 For the present invention Figure 2 Another perspective view of the components;

[0035] Figure 4 This is a three-dimensional cross-sectional view of the thermal insulation component of the present invention;

[0036] Figure 5 This is a detailed connection diagram of the cooling mechanism, support assembly, and screening and crushing mechanism of the present invention;

[0037] Figure 6 For the present invention Figure 5 Front view of each component;

[0038] Figure 7 This is a detailed connection diagram of the support component and the vibration device of the present invention;

[0039] Figure 8 This is a detailed connection diagram of the cooling mechanism and screening and crushing mechanism of the present invention;

[0040] Figure 9 This is a detailed connection diagram of the various components of the screening and crushing mechanism of the present invention;

[0041] Figure 10 For the present invention Figure 9 Front view of each component;

[0042] Figure 11 This is a schematic diagram showing the disassembled components of the present invention, including the first tube body, the cooling assembly, and the rectangular frame.

[0043] Figure 12 This is a three-dimensional cross-sectional view of the cold plate of the present invention.

[0044] In the picture:

[0045] 1. Insulation component; 11. First box; 111. First channel; 112. First elastic cloth; 113. Cavity; 12. Feeding hopper;

[0046] 2. Cooling mechanism; 21. First tube body; 22. Cooling component; 221. Insulation board; 222. Cold plate; 223. U-shaped frame; 224. Block; 225. Second channel; 226. Flow channel; 23. Rectangular frame; 231. Second elastic cloth; 24. Circulating refrigeration equipment; 25. Second tube body; 26. Third tube body;

[0047] 3. Support assembly; 31. First spring; 32. First plate; 33. Second plate; 34. Second spring; 35. Third plate;

[0048] 4. Vibration equipment;

[0049] 5. Screening and crushing mechanism; 51. Hydraulic rod; 52. Rod body; 53. Second box body; 54. Fourth plate body; 55. Mesh body; 56. Ultrasonic vibration generator; 57. Extrusion assembly; 571. First annular plate; 572. Second annular plate; 573. Extrusion port; 58. Fifth plate body; 581. Inclined slope. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] Please see Figures 1-12 A urea product cooling device, comprising:

[0052] Cooling mechanism 2, which is capable of cooling urea granules;

[0053] Support component 3, which supports cooling mechanism 2;

[0054] Vibration device 4 can drive the urea granules to vibrate during the cooling process of the cooling mechanism 2.

[0055] The screening and crushing mechanism 5 is capable of crushing the urea granules that agglomerate during the cooling process of the cooling mechanism 2.

[0056] It also includes a heat insulation component 1, which can accurately guide the urea finished product particles to be cooled into the cooling mechanism 2, and the cooling mechanism 2, the support component 3, the vibrating device 4 and the screening and crushing mechanism 5 are all located inside the heat insulation component 1.

[0057] Furthermore, in order to enable the insulation component 1 to accurately guide the urea finished product particles to be cooled into the cooling mechanism 2, and the cooling mechanism 2, the support component 3, the vibrating device 4 and the screening and crushing mechanism 5 are all located inside the insulation component 1, as a preferred embodiment of the present invention, the insulation component 1 includes a first box 11 and a feeding hopper 12. The feeding hopper 12 has a funnel-shaped cross-section on the first surface, the first surface is perpendicular to the horizontal plane, the narrower end of the funnel-shaped feeding hopper 12 faces downward, and the narrower end of the funnel-shaped feeding hopper 12 is fixedly connected to the upper surface of the first box 11. The interior of the first box 11 forms a cavity 113, and the cooling mechanism 2, the support component 3, the vibrating device 4 and the screening and crushing mechanism 5 are all located inside the cavity 113.

[0058] Specifically, such as Figures 1-3 As shown, during use, the cooling mechanism 2, support assembly 3, vibration device 4 and screening and crushing mechanism 5 are all installed in the cavity 113 of the first box 11, thereby ensuring that the urea product is in a relatively closed environment during the entire cooling process, further reducing the dust dispersion of the urea product.

[0059] By setting up the feeding hopper 12, an external conveyor belt or other conveying equipment can be connected to accurately transport the freshly granulated urea product granules into the feeding hopper 12. Then, through the vibration of the feeding hopper 12 in conjunction with the vibration of the vibration equipment 4, these granules can be transported into the cooling mechanism 2 for cooling and temperature reduction. The entire process requires no manual intervention, which is convenient, fast, and more efficient.

[0060] Furthermore, in order to enable the vibration device 4 to drive the urea finished product particles to vibrate during the cooling process of the cooling mechanism 2, as a preferred embodiment of the present invention, the vibration device 4 is a vibration motor, and the outer wall of the vibration device 4 is connected to the support component 3.

[0061] Specifically, the vibration motor is a mature existing technology that can continuously generate vibration. This ensures that while the urea particles entering the cooling mechanism 2 can move inside the cooling mechanism 2, these particles can also continuously "bump and jump," thereby constantly changing the contact point between the urea particles and the cooling mechanism 2, thus improving the cooling effect of the urea particles.

[0062] Furthermore, in order to enable the support assembly 3 to support the cooling mechanism 2, as a preferred embodiment of the present invention, the support assembly 3 includes a second plate 33, two first plates 32, two third plates 35, a plurality of first springs 31 and a plurality of second springs 34. The lower ends of the plurality of second springs 34 are all fixedly connected to the bottom surface of the cavity 113. The plurality of second springs 34 are divided into two groups. The upper ends of the two groups of second springs 34 are respectively fixedly connected to the bottom surface of the two first plates 32. The upper surfaces of the two first plates 32 are respectively fixedly connected to the lower ends of the two third plates 35. The upper ends of the two third plates 35 are all connected to the cooling mechanism 2. The adjacent side of the two third plates 35 is respectively fixedly connected to the two sides of the second plate 33. The middle part of the second plate 33 is fixedly connected to the outer wall of the vibrating device 4. The middle part of the second plate 33 is also connected to the screening and crushing mechanism 5.

[0063] Specifically, such as Figure 2 , Figure 3 , Figures 5-7 As shown, during use, because the vibrating device 4 is fixed in the middle of the second plate 33, the vibrating device 4 can cause the second plate 33, the two first plates 32, the two third plates 35 and the various components installed on these plates to vibrate under the action of several first springs 31 and several second springs 34, thereby ensuring the vibration of the cooling mechanism 2 and the screening and crushing mechanism 5, so that the urea finished particles located in the cooling mechanism 2 and the screening and crushing mechanism 5 can still vibrate during the cooling period.

[0064] Furthermore, in order to enable the cooling mechanism 2 to cool the finished urea granules, as a preferred embodiment of the present invention, the cooling mechanism 2 includes a circulating refrigeration device 24, a plurality of first tubes 21, two cooling components 22, two rectangular frames 23, a plurality of second tubes 25, and two third tubes 26. A plurality of first channels 111 are provided through one side of the lower end of the first housing 11. The outer wall of the circulating refrigeration device 24 is fixedly connected to the inner wall of the cavity 113. The input and output ends of the circulating refrigeration device 24 are respectively fixedly connected to one end of each of the two third tubes 26. The other ends of each of the two third tubes 26 are respectively connected to the two cooling components 22. The two rectangular frames 23 are connected by several second tubes 25. The lower ends of the two rectangular frames 23 are respectively connected to one end of the two cooling components 22. The upper ends of the two rectangular frames 23 are respectively connected to the feeding hopper 12 and the screening and crushing mechanism 5. Several first tubes 21 are divided into two groups. The ends of the two cooling components 22 away from the feeding hopper 12 and the screening and crushing mechanism 5 are respectively connected to the two groups of first tubes 21. One group of first tubes 21 is connected to the screening and crushing mechanism 5. The other group of first tubes 21 passes through several first channels 111 to the outside of the first box 11. Both cooling components 22 have an inclination angle with the horizontal plane, and the inclination directions of the two cooling components 22 are opposite.

[0065] More specifically, the inner walls of several first channels 111 are fixedly connected with first elastic cloth 112, and the inner walls of several first elastic cloths 112 are respectively fixedly connected to the outer walls of the second group of first tubes 21.

[0066] More specifically, the cooling component 22 includes a U-shaped frame 223, two insulation plates 221, two cold plates 222, and several blocks 224. The upper and lower sides of the U-shaped frame 223 are fixedly connected to the adjacent side of the two cold plates 222, and the opposite sides of the two cold plates 222 are fixedly connected to the adjacent side of the two insulation plates 221. The lower end of the rectangular frame 23 is fixedly connected to the upper surface of the U-shaped frame 223. Several equally spaced second elastic cloths 231 are fixedly connected to the inner wall of the rectangular frame 23 near the feeding hopper 12. The inner walls of the several second elastic cloths 231 are all fixedly connected to the outer wall of the lower end of the feeding hopper 12. The cross-section of the several blocks 224 on the second surface is triangular, and the second surface is parallel to the surface of the cold plate 222.

[0067] More specifically, the two sides of several blocks 224 are fixedly connected to the side adjacent to the two cold plates 222 respectively. A second channel 225 is formed between the U-shaped frame 223, the two cold plates 222 and the several blocks 224. The feeding hopper 12, the first second channel 225, the first group of first pipes 21, the screening and crushing mechanism 5, the second second channel 225 and the second group of first pipes 21 are internally connected.

[0068] More specifically, flow channels 226 are formed inside both cold plates 222. The cross-section of the flow channels 226 on the second surface is S-shaped. The flow channels 226 of the two cold plates 222 in the same cooling component 22 and the two adjacent cold plates 222 in the two cooling components 22 are connected through the second tube 25. The two cold plates 222 that are far apart in the two cooling components 22 are connected to the input and output ends of the circulating refrigeration equipment 24 through the two third tubes 26.

[0069] Specifically, such as Figure 8 , Figure 11 and Figure 12 As shown, during use, the high-temperature urea finished product particles in the feeding hopper 12 slide into the first rectangular frame 23 due to gravity. Due to the vibration device 4 and the support component 3, the cooling component 22 will also be in a "bumpy" state at this time, and the cooling component 22 will be in an inclined state. The high-temperature urea finished product particles that have fallen into the second channel 225 of the cooling component 22 will slide from high to low along the inclined surface of the cooling component 22.

[0070] Furthermore, because several blocks 224 are set between the two cold plates 222 in the same cooling component 22, the high-temperature urea finished particles will be passively moved in an "S" shape due to the obstruction of the blocks 224. This not only increases the contact time between the high-temperature urea finished particles and the cold plate 222, but also forces the high-temperature urea finished particles that have agglomerated due to static electricity or other reasons to be "squeezed down and dispersed".

[0071] Afterwards, the high-temperature urea finished particles moving in the second channel 225 are gradually cooled by the cold plates 222 on the upper and lower sides. Then, these preliminarily cooled urea finished particles will enter the first group of first tubes 21, and then enter the screening and crushing mechanism 5 for screening. The urea finished particles that are not agglomerated will fall directly from the screening and crushing mechanism 5 into the second cooling component 22.

[0072] The finished urea particles entering the second cooling component 22 are cooled again by the cold plate 222, and then discharged from the second group of first tubes 21 at the other end of the second cooling component 22 to the external collection device of the first box 11 for collection (or directly loaded into urea bags for collection). In addition, if the cooling effect of the two cooling components 22 is relatively poor in actual production, multiple cooling components 22 can be set, and a screening and crushing mechanism 5 needs to be set between each cooling component 22.

[0073] In addition, during the trial period, the circulating refrigeration equipment 24 is turned on first. The circulating refrigeration equipment 24 can transfer the low temperature medium through the first third tube 26 to the flow channel 226 in the first cold plate 222 of the cooling component 22 located below, so that the cold plate 222 can be cooled by the low temperature medium.

[0074] Subsequently, the low-temperature medium is transported through the second tube 25 from the first cold plate 222 in the cooling component 22 located below to the second cold plate 222 in the same cooling component 22, thereby cooling the urea finished particles in the second channel 225 located between the two cold plates 222.

[0075] The low-temperature medium is then transported through another second tube 25 from the second cold plate 222 in the lower cooling component 22 to one of the cold plates 222 in the upper cooling component 22. After passing through the two cold plates 222 in the upper cooling component 22 in the same way, it returns to the circulating refrigeration equipment 24 through the second third tube 26 for cooling again.

[0076] It should be noted that the circulating refrigeration device 24 can be a compressor unit, and there is no specific limitation. It can be any device that can cool down. Because the cooling component 22 needs to vibrate with the support component 3, and the circulating refrigeration device 24 is fixed in the cavity 113, in order to avoid the circulating refrigeration device 24 and the cooling component 22 from colliding, the third tube 26 needs to be a flexible or plastic tube that can deform or bend to a certain extent. There is no limitation here.

[0077] Furthermore, in order to enable the screening and crushing mechanism 5 to crush the urea finished product granules that agglomerate during the cooling process of the cooling mechanism 2, as a preferred embodiment of the present invention, the screening and crushing mechanism 5 includes a hydraulic rod 51, a second box 53, a fourth plate 54, a mesh 55, an ultrasonic vibration generator 56, an extrusion assembly 57, and several rods 52. One end of the fourth plate 54 is fixedly connected to the middle of the second plate 33, and the other end of the fourth plate 54 is fixedly connected to the outer wall of the second box 53. The upper end of the second box 53 is cylindrical, and the lower end of the second box 53 is funnel-shaped. The extrusion assembly 57 is located inside the upper end of the second box 53, and the lower end of the second box 53 is fixedly connected to the inner wall of the rectangular frame 23 located below.

[0078] More specifically, the outer wall of the hydraulic rod 51 is fixedly connected to the outer wall of the second housing 53. The hydraulic rod 51 is parallel to several rods 52. The output end of the hydraulic rod 51 and the lower ends of several rods 52 both penetrate into the interior of the second housing 53 and are connected to the upper end of the extrusion assembly 57. The output end of the hydraulic rod 51 and the outer walls of several rods 52 are slidably connected to the penetration point of the second housing 53. The lower end of the extrusion assembly 57 is fixedly connected to the outer wall of the mesh 55. The bottom surface of the mesh 55 is connected to one end of the ultrasonic vibration generator 56. The other end of the ultrasonic vibration generator 56 penetrates into the exterior of the second housing 53. The ends of the first tubes 21 of the first group away from the cooling assembly 22 are all fixedly connected to and communicate with the second housing 53.

[0079] More specifically, the ultrasonic vibration generator 56 includes an ultrasonic transducer that converts electrical energy into high-frequency mechanical vibration, an ultrasonic resonant ring that uniformly transmits the vibration generated by the ultrasonic transducer to the entire mesh 55, and an ultrasonic transmission cable that transmits the high-frequency electrical signal generated by the ultrasonic power supply to the ultrasonic transducer.

[0080] More specifically, the extrusion assembly 57 includes a first annular plate 571 and a second annular plate 572. The outer wall of the first annular plate 571 is fixedly connected to the inner wall of the upper end of the second housing 53. The inner wall of the first annular plate 571 is fixedly connected to the outer wall of the mesh 55. The outer wall of the second annular plate 572 is slidably connected to the inner wall of the upper end of the second housing 53. The upper surface of the second annular plate 572 is fixedly connected to the output end of the hydraulic rod 51 and the lower ends of several rods 52. Several extrusion ports 573 are opened on the adjacent side of the first annular plate 571 and the second annular plate 572, and the several extrusion ports 573 of the first annular plate 571 and the second annular plate 572 are staggered.

[0081] More specifically, a fifth plate 58 is fixedly connected to the upper surface of the second annular plate 572, and a slope 581 is provided on the surface of the fifth plate 58, with the low point of the slope 581 located on the inner side.

[0082] Specifically, such as Figure 9 and Figure 10 As shown, when the finished urea particles are conveyed from the first tube 21 of the first group, they will slide onto the mesh 55 of the second box 53. Since the screening and crushing mechanism 5 itself is connected to the second plate 33 through the fourth plate 54, the screening and crushing mechanism 5 itself will continuously vibrate.

[0083] In addition, because the mesh 55 is vibrating additionally through the ultrasonic vibration generator 56, the urea finished particles that fall onto the surface of the mesh 55 will continue to "jump" due to the vibration. During the jumping process, the urea finished particles that have not clumped can slide directly through the holes of the mesh 55 into the cooling component 22 located below.

[0084] In order to avoid the accumulation of clumps of finished urea particles on the mesh 55 (which not only wastes urea material, but may also increase the load on the mesh 55 as the accumulation increases), thus accelerating the damage of the mesh 55, the hydraulic rod 51 can be opened simultaneously during use. The output end of the hydraulic rod 51 extends downward and, together with several rods 52, pushes the second annular plate 572 and the fifth plate 58 down together.

[0085] Because the extrusion port 573 between the second annular plate 572 and the first annular plate 571 is misaligned, the clump of urea can be crushed. When the diameter of the crushed urea particles is smaller than the mesh of the mesh body 55, they can fall from the mesh to the bottom to continue cooling. Conversely, urea particles that do not meet the extrusion standard will move back into the extrusion assembly 57 during the continuous shaking of the mesh body 55 and be repeatedly extruded until they meet the standard and fall out of the mesh body 55.

[0086] In addition, because a ramp 581 is provided above the fifth plate 58, the accumulation of urea particles can be reduced.

[0087] Working principle:

[0088] When in use, first start the circulating refrigeration equipment 24, and inject the low-temperature medium into the S-shaped flow channel 226 of the cold plate 222 inside the cooling component 22 through the third pipe 26, so that the cold plate 222 is kept at a low temperature. At the same time, turn on the vibration equipment 4, and through the cooperation of the second plate 33, the first spring 31 and the second spring 34, drive the entire support component 3 and the cooling mechanism 2 and the screening and crushing mechanism 5 installed on it to generate continuous bumping vibration.

[0089] The newly formed high-temperature urea granules enter the heat preservation component 1 through the feeding hopper 12 and slide into the second channel 225 of the first cooling component 22. Since the cooling component 22 has an inclined angle and is in a vibrating state, the urea granules will slide from high to low on the inclined surface.

[0090] During the sliding process, the particles are blocked by the triangular blocks 224 between the cold plates 222 and are forced to move in an S-shaped path. This not only prolongs the contact time between the urea and the cold plates 222, but also breaks up some small clumps by forcibly squeezing them.

[0091] Afterwards, the particles that have undergone preliminary cooling enter the second box 53 of the screening and crushing mechanism 5 through the first tube 21 of the first group and fall onto the mesh 55. At this time, the ultrasonic vibration generator 56 drives the mesh 55 to vibrate at high frequency. Particles that have not clumped directly pass through the mesh and fall into the second cooling component 22 below for further cooling.

[0092] For larger lumps, the hydraulic rod 51 will drive the second annular plate 572 to move downward, and work with the misaligned extrusion port 573 on the first annular plate 571 to forcibly crush the lumps until they reach the required size and pass through the mesh 55.

[0093] Finally, the urea particles undergo secondary cooling in the second cooling component 22 and are discharged from the second group of first tubes 21 through the first channel 111 to the outside of the first box 11 for collection. The entire cooling process is completed in the closed cavity 113, effectively preventing dust from scattering.

[0094] 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 urea product cooling device, characterized in that, include: Cooling mechanism (2), which is capable of cooling urea product granules; Support component (3) which can support cooling mechanism (2); The vibration device (4) can drive the urea finished product particles to vibrate during the cooling process of the cooling mechanism (2) cooling the urea finished product particles; The screening and crushing mechanism (5) is capable of crushing the urea finished product granules that agglomerate during the cooling process of the cooling mechanism (2). It also includes a heat insulation component (1), which can accurately guide the urea finished product particles to be cooled into the cooling mechanism (2). The heat insulation component (1) includes a first box (11) and a feeding hopper (12). The interior of the first box (11) forms a cavity (113). The cooling mechanism (2) includes a circulating refrigeration device (24), several first tubes (21), two cooling components (22), two rectangular frames (23), several second tubes (25), and two third tubes (26). Several first channels (111) are provided through one side of the lower end of the first box (11). The outer wall of the circulating refrigeration device (24) is fixedly connected to the inner wall of the cavity (113). The input and output ends of the circulating refrigeration device (24) are fixedly connected to one end of the two third tubes (26), and the other ends of the two third tubes (26) are connected to the two cooling components (22). The two cooling components (22) are also connected to each other through several second tubes (25). The lower ends of the two rectangular frames (23) are connected to one end of the two cooling components (22), and the upper ends of the two rectangular frames (23) are connected to the feeding hopper (12). The first tube (21) is connected to the screening and crushing mechanism (5). The first tube (21) is divided into two groups. The ends of the two cooling components (22) away from the feeding hopper (12) and the screening and crushing mechanism (5) are respectively connected to the two groups of first tubes (21). The first group of first tubes (21) is connected to the screening and crushing mechanism (5). The second group of first tubes (21) passes through several first channels (111) to the outside of the first box (11). The two cooling components (22) have an inclination angle with the horizontal plane, and the inclination directions of the two cooling components (22) are opposite. The cooling component (22) connected to the first group of first tubes (21) is located above the cooling component (22) connected to the second group of first tubes (21). The end of each cooling component (22) connected to the rectangular frame (23) is higher than the end connected to the first tube (21). The cooling component (22) includes a U-shaped frame (223), two insulation boards (221), two cold plates (222), and several blocks (224). The upper and lower sides of the U-shaped frame (223) are fixedly connected to the side adjacent to the two cold plates (222), and the side of the two cold plates (222) that are far apart from each other are fixedly connected to the side adjacent to the two insulation boards (221). The lower end of the rectangular frame (23) is fixedly connected to the upper surface of the U-shaped frame (223). Several equidistant second elastic cloths (231) are fixedly connected to the inner wall of the rectangular frame (23) near the feeding hopper (12). The inner walls of the several second elastic cloths (231) are all fixedly connected to the outer wall of the lower end of the feeding hopper (12). The cross-section of the several blocks (224) on the second surface is triangular, and the second surface is parallel to the surface of the cold plate (222). The two sides of several blocks (224) are fixedly connected to the side adjacent to the two cold plates (222), and a second channel (225) is formed between the U-shaped frame (223), the two cold plates (222) and the several blocks (224). The second channel (225) in the cooling component (22) located on the upper side is the first second channel (225), and the second channel (225) in the cooling component (22) located on the lower side is the second second channel (225). The feeding hopper (12), the first second channel (225), the first group of first pipes (21), the screening and crushing mechanism (5), the second second channel (225) and the second group of first pipes (21) are connected in sequence. Both of the cold plates (222) have flow channels (226) formed inside.

2. The urea product cooling equipment according to claim 1, characterized in that, The cooling mechanism (2), support assembly (3), vibration device (4) and screening and crushing mechanism (5) are all located inside the insulation assembly (1).

3. The urea product cooling equipment according to claim 2, characterized in that, The feed hopper (12) has a funnel-shaped cross section on the first surface, which is perpendicular to the horizontal plane. The narrower end of the funnel-shaped feed hopper (12) faces downwards, and the narrower end of the funnel-shaped feed hopper (12) is fixedly connected to the upper surface of the first box (11).

4. The urea product cooling equipment according to claim 3, characterized in that, The vibration device (4) is a vibration motor, and the outer wall of the vibration device (4) is connected to the support assembly (3).

5. A urea product cooling device according to claim 4, characterized in that, The support assembly (3) includes a second plate (33), two first plates (32), two third plates (35), a plurality of first springs (31) and a plurality of second springs (34). The lower ends of the plurality of second springs (34) are fixedly connected to the bottom surface of the cavity (113). The plurality of second springs (34) are divided into two groups. The upper ends of the two groups of second springs (34) are fixedly connected to the bottom surface of the two first plates (32) respectively. The upper surfaces of the two first plates (32) are fixedly connected to the lower ends of the two third plates (35) respectively. The upper ends of the two third plates (35) are connected to the cooling mechanism (2). The adjacent side of the two third plates (35) is fixedly connected to the two sides of the second plate (33) respectively. The middle part of the second plate (33) is fixedly connected to the outer wall of the vibrating device (4). The middle part of the second plate (33) is also connected to the screening and crushing mechanism (5).

6. A urea product cooling device according to claim 5, characterized in that, The inner walls of several of the first channels (111) are fixedly connected with first elastic cloth (112), and the inner walls of several of the first elastic cloths (112) are fixedly connected to the outer walls of the second group of first tubes (21).

7. A urea product cooling device according to claim 6, characterized in that, The flow channel (226) has an S-shaped cross section on the second surface. The flow channels (226) of the two cold plates (222) in the same cooling component (22) and the two adjacent cold plates (222) in the two cooling components (22) are connected through the second tube (25). The two cold plates (222) in the two cooling components (22) that are far apart from each other are connected to the input and output ends of the circulating refrigeration equipment (24) through the two third tubes (26).

8. A urea product cooling device according to claim 7, characterized in that, The screening and crushing mechanism (5) includes a hydraulic rod (51), a second box (53), a fourth plate (54), a mesh (55), an ultrasonic vibration generator (56), an extrusion assembly (57), and several rods (52). One end of the fourth plate (54) is fixedly connected to the middle of the second plate (33), and the other end of the fourth plate (54) is fixedly connected to the outer wall of the second box (53). The upper end of the second box (53) is cylindrical, and the lower end of the second box (53) is funnel-shaped. The extrusion assembly (57) is located inside the upper end of the second box (53), and the lower end of the second box (53) is fixedly connected to the inner wall of the rectangular frame (23) located below. The outer wall of the hydraulic rod (51) is fixedly connected to the outer wall of the second box (53). The hydraulic rod (51) is parallel to several rods (52). The output end of the hydraulic rod (51) and the lower ends of several rods (52) both penetrate into the interior of the second box (53) and are connected to the upper end of the extrusion assembly (57). The output end of the hydraulic rod (51) and the outer wall of several rods (52) are slidably connected to the penetration point of the second box (53). The lower end of the extrusion assembly (57) is fixedly connected to the outer wall of the mesh (55). The bottom surface of the mesh (55) is connected to one end of the ultrasonic vibration generator (56). The other end of the ultrasonic vibration generator (56) penetrates into the outside of the second box (53). The end of the first tube (21) of the first group away from the cooling assembly (22) is fixedly connected to and communicates with the second box (53). The ultrasonic vibration generator (56) includes an ultrasonic transducer that converts electrical energy into high-frequency mechanical vibration, an ultrasonic resonant ring that uniformly transmits the vibration generated by the ultrasonic transducer to the entire mesh (55), and an ultrasonic transmission cable that transmits the high-frequency electrical signal generated by the ultrasonic power supply to the ultrasonic transducer.

9. A urea product cooling device according to claim 8, characterized in that, The extrusion assembly (57) includes a first annular plate (571) and a second annular plate (572). The outer wall of the first annular plate (571) is fixedly connected to the inner wall of the upper end of the second box (53). The inner wall of the first annular plate (571) is fixedly connected to the outer wall of the mesh (55). The outer wall of the second annular plate (572) is slidably connected to the inner wall of the upper end of the second box (53). The upper surface of the second annular plate (572) is fixedly connected to the output end of the hydraulic rod (51) and the lower ends of several rods (52). Several extrusion ports (573) are opened on the adjacent side of the first annular plate (571) and the second annular plate (572). The several extrusion ports (573) of the first annular plate (571) and the second annular plate (572) are staggered. The first annular plate (571) is located below the second annular plate (572).

10. A urea product cooling device according to claim 9, characterized in that, The upper surface of the second annular plate (572) is fixedly connected to a fifth plate (58), and the upper surface of the fifth plate (58) is provided with a slope (581), the low point of the slope (581) being located on the inner side.

Images