Urea evaporation separation device

Abstract

This invention relates to online biuret cleaning and provides a urea evaporation and separation device, including a separator and multiple flushing nozzles passing through the top of the separator, as well as a rotating device, a dispersing component, and a flow-through component. The rotating device includes a housing, a first rotating ring, multiple first L-shaped rods, and a first arc plate. The dispersing component includes a first perforated plate. One end of the first arc plate is connected to the first rotating ring via the first L-shaped rods. The first rotating ring is disposed within the housing at one end that extends into the top of the separator. The end of the first L-shaped rod away from the first arc plate extends into the housing and is connected to the first rotating ring. The end of the first arc plate away from the first L-shaped rod is connected to the first perforated plate. The first perforated plate is rotatably connected to the flow-through component. The evaporation and separation device provided by this invention can efficiently handle caking and agglomeration online, without clogging and with a fast discharge speed.

Description

Technical Field

[0001] This invention relates to the technical field of biuret online cleaning, and more specifically, to a urea evaporation and separation device. Background Technology

[0002] Urea condenses at high temperatures to form biuret. As the urea evaporation and separation unit operates, biuret will adhere and accumulate inside the unit. When the biuret accumulates to a certain extent, it will detach. The detached biuret will fall into the urine, which will directly cause the biuret in the product to exceed the standard. In addition, if there are lumpy biuret clumps, they will also enter the subsequent pumps along with the urine, causing the pumps to vaporize or even block the pipelines. In severe cases, it will cause the unit to shut down.

[0003] In the prior art, in order to avoid the accumulation of biuret and the resulting excessive biuret in subsequent products, a flushing device is usually set up. For example, the patent with publication number CN202411026U discloses a flushing device for a two-stage evaporator separator in a urea production system, which uses a ring-shaped flushing water pipe set at the top of the separator.

[0004] However, the method of directly rinsing the equipment from the top using a rinsing device has the following shortcomings: (1) In order to avoid the accumulation of biuret, it is necessary to stop the machine and increase the rinsing frequency. However, as the rinsing frequency increases, the evaporation workload of the evaporation separation equipment increases, which in turn leads to increased energy consumption; (2) If the rinsing frequency is reduced, it is easy to accumulate more material and it is easy to clump together. As a result, it is not easy to flush down the material using a rinsing device, and there is a tendency for residue to remain. Moreover, even if it is flushed down, there is a clump that blocks the material, which reduces the overall rinsing efficiency.

[0005] Based on the above description, there is an urgent need for a urea evaporation and separation device that facilitates online hot washing of biuret. Summary of the Invention

[0006] The purpose of this invention is to provide a urea evaporation and separation device that can separate the caking and agglomeration inside the device and can also efficiently flush and discharge it without clogging.

[0007] The embodiments of the present invention are achieved through the following technical solution: a urea evaporation and separation device, comprising a separator and a plurality of flushing nozzles disposed on the top of the separator, and further comprising a rotating device, a dispersing assembly, and a flow-through component; the rotating device comprises a housing, a first rotating ring, a plurality of first L-shaped rods, and a first arc plate; the dispersing assembly comprises a first perforated plate; one end of the first arc plate is connected to the first rotating ring via the first L-shaped rods; the first rotating ring is disposed within the housing at one end that penetrates the top of the separator; the end of the first L-shaped rod away from the first arc plate penetrates the housing and is connected to the first rotating ring; the end of the first arc plate away from the first L-shaped rods is connected to the first perforated plate; the first perforated plate is rotatably connected to the flow-through component.

[0008] Furthermore, the rotating assembly further includes a second rotating ring, multiple second L-shaped rods, and a second arc plate; the dispersing assembly further includes a second perforated plate; the second rotating ring is disposed on top of the first rotating ring; the second arc plate is connected to the second rotating ring via the second L-shaped rods; one end of the second L-shaped rod away from the second arc plate passes through the housing and is connected to the second rotating ring; one end of the second arc plate passes through the first arc plate and contacts the inner wall of the first arc plate; one end of the second arc plate away from the second L-shaped rod is connected to the second perforated plate; the second perforated plate is disposed on top of the first perforated plate; one end of the second perforated plate away from the second arc plate is rotatably connected to the flow member.

[0009] Furthermore, multiple grinding heads are provided between the first and second perforated plates.

[0010] Furthermore, the rotating assembly further includes a third rotating ring, multiple third L-shaped rods, and a third arc plate; the dispersing assembly further includes a third perforated plate; the third rotating ring is disposed on top of the second rotating ring; one end of the third arc plate is externally disposed on the second arc plate; the other end of the third arc plate passes through the first arc plate; the third arc plate is connected to the third rotating ring via the third L-shaped rods; the end of the third arc plate away from the third L-shaped rods is connected to the third perforated plate; the third perforated plate is disposed on top of the second perforated plate; the end of the third perforated plate away from the third arc plate is rotatably connected to the flow member;

[0011] Furthermore, the outer surface of the housing is provided with a plurality of limiting grooves for limiting the first L-shaped rod, the second L-shaped rod, and the third L-shaped rod.

[0012] Furthermore, the end of the first arc plate connected to the first L-shaped rod surrounds the end of the second arc plate away from the third arc plate; the end of the first arc plate away from the second arc plate passes through the end of the third arc plate away from the second arc plate where the second L-shaped rod is located.

[0013] Furthermore, the inner wall of the separator is provided with multiple elastic protrusions.

[0014] Furthermore, the flow element is a basket; one end of the basket is rotatably connected to the first perforated plate via a first rotating shaft; the other end of the basket is connected to the inner wall of the separator near the discharge port.

[0015] Furthermore, the basket is a conical basket.

[0016] Furthermore, the concave end of the conical basket is connected to the first rotating shaft; the enlarged end of the conical basket is connected to the separator.

[0017] The technical solution of this invention has at least the following advantages and beneficial effects: When in use, the end of the housing that protrudes from the top of the separator is provided with multiple servo motors, one of which is connected to the second rotating shaft, thereby driving the first rotating ring to rotate, and further driving multiple first L-shaped rods used to connect the first conversion and the first arc plate to rotate, thereby driving the first arc plate to rotate steadily along the inner side wall of the separator in an arc direction. At the same time, the first perforated plate at the bottom of the first arc plate rotates with the first arc plate, thereby screening the agglomerates scraped off by the first arc plate, so as to facilitate the quick dispersing of the agglomerates by the flushing nozzle and rapid discharge of the separator through the flow member, avoiding the problem of blockage caused by the presence of agglomerates affecting the flushing efficiency of the separator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure provided for an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged schematic diagram of local structure A in the middle;

[0021] Figure 3 This is a schematic diagram of the internal structure of the housing provided in an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Internal structure diagram;

[0023] Figure 5 This is a schematic diagram of the third ring plate structure provided in an embodiment of the present invention;

[0024] Figure 6 A top view of the structure provided in an embodiment of the present invention;

[0025] Figure 7 for Figure 6 The first sectional view;

[0026] Figure 8 for Figure 6 The second sectional view.

[0027] Icons: 1-Separator, 2-Flush nozzle, 3-Rotating device, 31-Housing, 32-First rotating ring, 33-First L-shaped rod, 34-First arc plate, 35-Second rotating ring, 36-Second L-shaped rod, 37-Second arc plate, 38-Third rotating ring, 39-Third L-shaped rod, 40-Third arc plate, 4-Dispersion assembly, 41-First perforated plate, 42-Second perforated plate, 43-Third perforated plate, 5-Flow component, 6-Grinding head, 7-Limiting groove, 8-Elastic protrusion, 9-First rotating shaft, 10-Feed pipe, 11-Second rotating shaft, 12-Third rotating shaft, 13-Sealing ring, 14-Connecting seat. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example

[0034] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 - Appendix Figure 8 As shown, the urea evaporation and separation device in this embodiment includes a separator 1 and multiple flushing nozzles 2 passing through the top of the separator 1, as well as a rotating device 3, a dispersing assembly 4, and a flow-through component 5. The rotating device 3 includes a housing 31, a first rotating ring 32, multiple first L-shaped rods 33, and a first arc plate 34. The dispersing assembly 4 includes a first perforated plate 41. One end of the first arc plate 34 is connected to the first rotating ring 32 through the first L-shaped rods 33. The first rotating ring 32 is disposed inside the housing 31 at the end that passes through the top of the separator 1. The end of the first L-shaped rod 33 away from the first arc plate 34 passes through the housing 31 and is connected to the first rotating ring 32. The end of the first arc plate 34 away from the first L-shaped rod 33 is connected to the first perforated plate 41. The first perforated plate 41 is rotatably connected to the flow-through component 5.

[0035] Specifically, as shown in the attached document Figure 1 Appendix Figure 3 and attached Figure 5 As shown, during use, the urea feed pipe 10 passes through the top side wall of the separator 1, and the urea feed pipe 10 is located above the first arc plate 34; the end of the housing 31 that extends out of the top of the separator 1 is equipped with multiple servo motors (the top outer wall of the housing 31 is equipped with multiple connecting seats 14 connected to the servo motors, as shown in the attached figure). Figure 6As shown), one of the servo motors is connected to the second rotating shaft 11, thereby driving the first rotating ring 32 to rotate, which in turn drives the multiple first L-shaped rods 33 used to connect the first converter 32 and the first arc plate 34 to rotate. (The multiple first L-shaped rods 33 can be spaced between the two ends of the first arc plate 34, or one of them can be selected and placed at the end of the first arc plate 34. The number of first L-shaped rods 33 and their connection positions with the first arc plate 34 are determined according to the specific size of the separator and the size of the first arc plate 34, to ensure the stability of the first arc plate 34 during rotation.) This causes the first arc plate 34 to rotate steadily along the inner wall of the separator 1 in an arc direction (wherein, the first arc plate 34 has at least one end with a sloping shovel tip to scrape off the material buildup on the inner wall of the separator 1). At the same time, the first perforated plate 41 at the bottom of the first arc plate 34 rotates with the first arc plate 34, thereby screening the material scraped off by the first arc plate 34, so as to cooperate with the flushing nozzle 2 to quickly disperse the material and discharge it from the separator 1 through the flow member 5, thus avoiding the problem of blockage caused by the presence of material affecting the flushing efficiency of the separator 1.

[0036] The rotating assembly in this embodiment also includes a second rotating ring 35, multiple second L-shaped rods 36, and a second arc plate 37; the dispersing assembly 4 also includes a second perforated plate 42; the second rotating ring 35 is disposed on the top of the first rotating ring 32; the second arc plate 37 is connected to the second rotating ring 35 through the second L-shaped rods 36; one end of the second L-shaped rod 36 away from the second arc plate 37 passes through the housing 31 and is connected to the second rotating ring 35; one end of the second arc plate 37 passes through the first arc plate 34 and contacts the inner wall of the first arc plate 34; one end of the second arc plate 37 away from the second L-shaped rod 36 is connected to the second perforated plate 42; the second perforated plate 42 is disposed on the top of the first perforated plate 41; one end of the second perforated plate 42 away from the second arc plate 37 is rotatably connected to the flow member 5.

[0037] Specifically, as shown in the attached document Figure 1 Appendix Figure 5 Appendix Figure 7 and attached Figure 8 As shown, another servo motor located outside the housing 31 controls the third rotating shaft 12 to rotate in the opposite direction to the second rotating shaft 11. This, in turn, causes the second arc plate 37, which is connected to the third rotating shaft 12 via multiple second L-shaped rods 36, to rotate. One end of the second arc plate 37 passes through the first arc plate 34, thus cleaning both the inner wall of the separator 1 and the inner wall of the first arc plate 37. Furthermore, while the second arc plate 37 rotates, the second perforated plate 42 located at the bottom of the second arc plate 37 also rotates. Moreover, the second perforated plate 42 is located on top of the first perforated plate 41, and multiple grinding heads 6 are provided between the second perforated plate 42 and the first perforated plate 41. This further grinds and crushes the scraped-off agglomerates and clumps, so that they can be efficiently and quickly flushed out of the separator 1 with the flushing nozzle 2.

[0038] The rotating assembly in this embodiment also includes a third rotating ring 38, multiple third L-shaped rods 39, and a third arc plate 40; the dispersing assembly 4 also includes a third perforated plate 43; the third rotating ring 38 is disposed on the top of the second rotating ring 35; one end of the third arc plate 40 is disposed outside the second arc plate 37; the other end of the third arc plate 40 passes through the first arc plate 34; the third arc plate 40 is connected to the third rotating ring 38 through the third L-shaped rods 39; the end of the third arc plate 40 away from the third L-shaped rods 39 is connected to the third perforated plate 43; the third perforated plate 43 is disposed on the top of the second perforated plate 42; the end of the third perforated plate 43 away from the third arc plate 40 is rotatably connected to the flow member 5.

[0039] Specifically, as shown in the attached document Figure 2 Appendix Figure 7 and attached Figure 8 As shown, the third rotating ring 38 is driven by the second rotating shaft 12, which in turn drives the third arc plate 40 to rotate via the third L-shaped rod 39. One end of the first arc plate 34 passes through the third arc plate 40, and one end of the third arc plate 40 passes through the second arc plate 37, thus forming an integral scraping structure with its ends connected (as shown in the attached figure). Figure 7 As shown), it can operate during online production to prevent material caking, and can also be combined with multiple flushing nozzles 2 to perform regular and efficient flushing and cleaning of the inner wall of the separator 2; furthermore, the third perforated plate 43 is located on top of the second perforated plate 42, and the second perforated plate 42 is located on top of the first perforated plate 41. The first perforated plate 41, the second perforated plate 42, and the third perforated plate 43 are all fan-shaped structures (as shown in the attached diagram). Figure 8 As shown), they have overlapping portions and are equipped with multiple grinding heads 6 (as shown in the attached diagram). Figure 2 As shown in the figure, this allows for thorough grinding and pulverization of the scraped material so that it can be flushed by multiple flushing nozzles 2, thus avoiding blockage during the discharge process from the separator 1.

[0040] In this embodiment, while the second rotating shaft 12 and the third rotating shaft 13 rotate back and forth, the second rotating shaft 12 and the third rotating shaft 13 rotate in opposite directions (as shown in the attached figure). Figure 4 As shown in the diagram, the second rotating shaft 12 connects the first rotating ring 32 and the third rotating ring 38, and the third rotating shaft 12 is connected to the second rotating ring 35. To avoid mutual interference between the second rotating shaft 11 and the third rotating shaft 12, the second rotating ring 35 is provided with a through hole with a diameter larger than that of the second rotating shaft 11, through which the second rotating shaft 11 passes. At the same time, the topmost first rotating ring 32 is provided with a through hole with a diameter larger than that of the third rotating shaft 12, through which the third rotating shaft passes and extends to the middle of the second rotating shaft 11, connecting with the second rotating ring 35 sleeved on the second rotating shaft 11.

[0041] In this embodiment, the outer shell 31 is provided with a plurality of limiting grooves 7 for limiting the first L-shaped rod 33, the second L-shaped rod 36, and the third L-shaped rod 39.

[0042] Specifically, as shown in the attached document Figure 1 and attached Figure 3 As shown, the limiting groove 7 ensures the stability of each L-shaped rod after it is inserted into the housing 31 and connected to each rotating shaft. Furthermore, the portion of the housing 31 near the limiting groove 7 has an annular opening for the third L-shaped rod 39 to pass through and rotate. To ensure the sealing of the annular opening, a sealing ring 13 is slidably connected within the limiting groove 7, and the third L-shaped rod 39 passes through the sealing ring 13 (as shown in the attached diagram). Figure 3 As shown in the figure, similarly, both the first L-shaped rod 33 and the second L-shaped rod 36 are fitted with sealing rings.

[0043] In this embodiment, the inner wall of the separator 1 is provided with multiple elastic protrusions 8.

[0044] Specifically, as shown in the appendix Figure 1 Or attached Figure 2 As shown, the elastic protrusion 8 facilitates cooperation with each rotating arc wall to clean up the accumulated material adhering to the wall surface; the elastic protrusion 8 is made of high-temperature resistant and corrosion-resistant rubber commonly used in the field.

[0045] In this embodiment, the flow element 5 is a basket; one end of the basket is rotatably connected to the first perforated plate 41 via the first rotating shaft 9; the other end of the basket is connected to the inner wall of the separator 1 near the discharge port.

[0046] In this embodiment, the basket is a conical basket; the constricted end of the conical basket is connected to the first rotating shaft 9; the enlarged end of the conical basket is connected to the separator 1. Specifically, as shown in the attached... Figure 1 As shown, using a conical basket as the flow element 5 can increase the flow area. At the same time, the conical basket has a first rotating shaft 9 at its contraction end. The first perforated plate 41, the second perforated plate 42, and the third perforated plate 43 are connected to the first rotating shaft 9 through a ring sleeve.

[0047] In summary, the first arc plate 34, the second arc plate 37, and the third arc plate 40 are connected to each other alternately, and at the same time, the multiple elastic protrusions 8 on the inner wall of the separator 1 are used to clean the material buildup between the inner wall of the separator 1 and each arc plate. Meanwhile, the first perforated plate 41, the second perforated plate 42, and the third perforated plate 43, which are connected to the bottom of each arc plate, are all connected to the first rotating shaft 9 at the top of the flow member 5. This allows the first perforated plate 41, the second perforated plate 42, and the third perforated plate 43 to rotate with each arc plate to disperse the material, so as to facilitate thorough cleaning with the flushing nozzle 2. Among them, multiple grinding heads 6 are provided between the first perforated plate 41, the second perforated plate 42, and the third perforated plate 43, which can crush the material buildup, avoid material blockage, and improve the efficiency of biuret material cleaning.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A urea evaporation and separation device, comprising a separator (1) and a plurality of flushing nozzles (2) disposed on the top of the separator (1), characterized in that: It also includes a rotating assembly (3), a dispersing assembly (4), and a flow component (5); The rotating assembly (3) includes a housing (31), a first rotating ring (32), multiple first L-shaped rods (33), and a first arc plate (34); The dispersing component (4) includes a first perforated disk (41); One end of the first arc plate (34) is connected to the first rotating ring (32) via the first L-shaped rod (33); the first rotating ring (32) is disposed inside the housing (31) at one end that passes through the top of the separator (1); the end of the first L-shaped rod (33) away from the first arc plate (34) passes through the housing (31) and is connected to the first rotating ring (32); the end of the first arc plate (34) away from the first L-shaped rod (33) is connected to the first perforated plate (41); the first perforated plate (41) is rotatably connected to the flow member (5); The rotating assembly also includes a second rotating ring (35), multiple second L-shaped rods (36), and a second arc plate (37); The dispersion component (4) also includes a second perforated disk (42); The second rotating ring (35) is located at the top of the first rotating ring (32); the second arc plate (37) is connected to the second rotating ring (35) via the second L-shaped rod (36); one end of the second L-shaped rod (36) away from the second arc plate (37) passes through the housing (31) and is connected to the second rotating ring (35); one end of the second arc plate (37) passes through the first arc plate (34) and contacts the inner wall of the first arc plate (34); one end of the second arc plate (37) away from the second L-shaped rod (36) is connected to the second perforated plate (42); the second perforated plate (42) is located at the top of the first perforated plate (41); one end of the second perforated plate (42) away from the second arc plate (37) is rotatably connected to the flow member (5); The rotating assembly also includes a third rotating ring (38), multiple third L-shaped rods (39), and a third arc plate (40); The dispersion component (4) also includes a third perforated disk (43); The third rotating ring (38) is located at the top of the second rotating ring (35); one end of the third arc plate (40) is located outside the second arc plate (37); the other end of the third arc plate (40) passes through the first arc plate (34); the third arc plate (40) is connected to the third rotating ring (38) through the third L-shaped rod (39); the end of the third arc plate (40) away from the third L-shaped rod (39) is connected to the third perforated plate (43); the third perforated plate (43) is located at the top of the second perforated plate (42); the end of the third perforated plate (43) away from the third arc plate (40) is rotatably connected to the flow member (5); The first arc plate (34) is connected to one end of the first L-shaped rod (33) and surrounds the second arc plate (37) at the end away from the third arc plate (40); the end of the first arc plate (34) away from the second arc plate (37) passes through the end of the third arc plate (40) away from the second arc plate (37) where the second L-shaped rod (36) is located.

2. The urea evaporation and separation device according to claim 1, characterized in that: Multiple grinding heads (6) are provided between the first perforated plate (41) and the second perforated plate (42).

3. The urea evaporation and separation device according to claim 1, characterized in that: The housing (31) is provided with a plurality of limiting grooves (7) for limiting the first L-shaped rod (33), the second L-shaped rod (36), and the third L-shaped rod (39).

4. The urea evaporation and separation device according to claim 1, characterized in that: The inner wall of the separator (1) is provided with multiple elastic protrusions (8).

5. The urea evaporation and separation device according to claim 1, characterized in that: The flow component (5) is a basket; one end of the basket is rotatably connected to the first perforated plate (41) via the first rotating shaft (9); the other end of the basket is connected to the inner wall of the separator (1) near the discharge port.

6. The urea evaporation and separation device according to claim 5, characterized in that: The basket is a cone-shaped basket.

7. The urea evaporation and separation apparatus according to claim 6, characterized in that: The concave end of the conical basket is connected to the first rotating shaft (9); the enlarged end of the conical basket is connected to the separator (1).

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