Urea production tail gas anti-aggregation mechanism

Abstract

The utility model is applicable to the technical field of urea production, and provides a urea production tail gas anti-aggregation mechanism which comprises a connecting pipe, a connecting flange is fixedly mounted at the bottom of the connecting pipe, a connecting box is inserted into the top of the connecting pipe, and gas outlet pipes are inserted into the positions, close to the two sides, of the top of the connecting box. Filter screens are fixedly installed at the positions, close to the tops, of inner cavities of the air outlet pipes, and cleaning assemblies are arranged at the bottoms of the filter screens, by arranging the adjusting assemblies, under rotation of a power output shaft of the servo motor, a driving gear fixed to the shaft end of the power output shaft of the servo motor can rotate, and then a hollow gear meshed with the driving gear can rotate; and under the cooperative use of a plurality of driving rods and a first arc-shaped groove, the shielding petals can deflect under the cooperative limiting of a convex block and a second arc-shaped groove through the adjacent driving rods, so that the multiple shielding petals are attached to one another to shield the supporting seat, a single filter screen is conveniently cleaned, a worker does not need to close a machine for cleaning, and the use effect of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of urea production, and particularly relates to a urea production tail gas anti-aggregation mechanism. Background Art

[0002] In the urea production device, a small amount of urea dust will be formed due to the existence of mechanical friction, and the urea dust generated by mechanical friction is discharged from the top of the granulation tower along with the flowing air in the granulation tower; at the same time, the molten urine carries 0.05wt% of free ammonia, and part of the free ammonia evaporates during the granulation process in the granulation tower and is discharged into the atmosphere from the air outlet at the top of the granulation tower along with the rising air; the dust discharged into the atmosphere drifts with the air for a certain distance and then falls, which will corrode the objects on the ground, and the free ammonia discharged into the atmosphere will also pollute the air.

[0003] During the urea production process, the urea dust generated is discharged after being filtered through the filter. However, after the filter has been used for a period of time, its bottom surface is clogged with dust. When the filter is clogged, it needs to be shut down for cleaning, thereby reducing the efficiency of exhaust gas treatment. Utility Model Content

[0004] The utility model provides a urea production tail gas anti-aggregation mechanism, aiming to solve the problem that after a filter screen has been used for a period of time, its bottom surface is clogged by dust accumulation, and when the filter screen is clogged, it needs to be shut down for cleaning, thereby reducing the efficiency of tail gas treatment.

[0005] The utility model is implemented as follows: a urea production tail gas anti-aggregation mechanism comprises a connecting pipe, a connecting flange is fixedly installed at the bottom of the connecting pipe, a connecting box is plugged at the top of the connecting pipe, an air outlet pipe is plugged at the top of the connecting box near both sides, a filter screen is fixedly installed at the inner cavity of the air outlet pipe near the top, a cleaning component is arranged at the bottom of the filter screen, a spray pipe is installed at the top of the air outlet pipe, and an adjustment component is arranged at the bottom of the inner cavity of the connecting box near both sides;

[0006] The adjustment component includes a servo motor fixedly installed near one side of the top of the inner cavity of the connecting box and a driving gear fixedly installed on the end of the power output shaft of the servo motor, a hollow gear is meshed on the rear side of the driving gear, a plurality of driving rods are movably inserted on the top of the hollow gear, the top of the driving rod is connected to a support seat for common rotation, the top of the support seat is fixedly connected to the top of the inner cavity of the connecting box, and a shielding flap is fixedly sleeved on the outer periphery of the driving rod near the top.

[0007] Preferably, the top of the hollow gear is provided with a plurality of first arc grooves, and the driving rods are movable through the inner cavities of adjacent first arc grooves respectively. The top of the hollow gear is fixedly installed with L-shaped plug rods near the front and rear sides, and the top of the hollow gear is fixedly installed with a plurality of protrusions.

[0008] Preferably, a circular groove is opened on the outer periphery of the support seat, and the opposite ends of the L-shaped rod are movably inserted in the inner cavity of the adjacent circular groove, and a second arc groove is opened at the bottom of the shielding flap, and the protrusions are movably inserted in the inner cavity of the adjacent second arc groove.

[0009] Preferably, a connecting rod is fixedly installed on one side of the inner cavity of the air outlet pipe, an air flow sensor is fixedly installed on the end of the connecting rod, and a controller is fixedly installed near the middle position on the top of the connection box.

[0010] Preferably, the cleaning assembly includes a vertical plate fixedly installed on the top of the connecting box near one side and a hydraulic rod fixedly installed on the other side of the vertical plate, a rack plate is fixedly installed on the end of the hydraulic rod, a rotating gear is meshed on the top of the rack plate, a cross bar is fixedly installed at the front center of the rotating gear, the end of the cross bar movably passes through the inner cavity of the air outlet pipe, and an active bevel gear is fixedly installed, a driven bevel gear is meshed on the front side of the active bevel gear, a vertical rod is fixedly installed on the top of the driven bevel gear, a cleaning brush is fixedly installed on the top of the vertical rod, and the cleaning brush and the filter are arranged to fit each other.

[0011] Preferably, a support plate is rotatably connected to the outer periphery of the vertical rod near the middle position, and one side of the support plate is fixedly connected to the inner cavity side wall of the air outlet pipe.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By setting up an adjustment component, when the servo motor power output shaft rotates, the driving gear fixed on the shaft end of the servo motor power output shaft can be rotated, and then the hollow gear meshing therewith can be rotated. With the coordinated use of a plurality of driving rods and the first arc groove, the shielding flap can be deflected with the adjacent driving rod under the coordinated limit of the protrusion and the second arc groove, so that a plurality of shielding flaps are fitted together to shield the support seat, thereby facilitating the cleaning of a single filter screen. There is no need for staff to shut down the machinery for cleaning, thereby improving the use effect of the device. By setting up the vertical plate, hydraulic rod, rack plate, rotating gear, cross bar, active bevel gear, driven bevel gear, vertical rod and cleaning brush, the bottom of the filter screen can be cleaned by the cleaning brush to prevent the filter screen from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 This is another perspective three-dimensional structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the air outlet pipe of the utility model;

[0017] Figure 4 It is a partial top-down cross-sectional view of the utility model;

[0018] Figure 5 It is an exploded view of the overall structure of the adjustment component of the utility model;

[0019] Figure 6 It is an exploded view of the adjustment component of the utility model from another perspective.

[0020] In the figure: 1. connecting pipe; 2. connecting box; 3. exhaust pipe; 31. connecting rod; 32. air flow sensor; 33. controller; 4. connecting flange; 5. cleaning component; 51. vertical plate; 52. hydraulic rod; 53. rack plate; 54. rotating gear; 55. cross bar; 56. active bevel gear; 57. driven bevel gear; 58. vertical rod; 581. support plate; 59. cleaning brush; 6. adjustment component; 61. servo motor; 62. driving gear; 63. hollow gear; 631. L-shaped plug rod; 632. first arc groove; 633. protrusion; 64. shielding flap; 641. second arc groove; 65. support seat; 651. circular groove; 66. driving rod; 7. filter; 8. spray pipe. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The utility model embodiment provides a urea production tail gas anti-agglomeration mechanism, such as Figure 1-6As shown, it includes a connecting pipe 1, a connecting flange 4 is fixedly installed at the bottom of the connecting pipe 1, a connecting box 2 is plugged into the top of the connecting box 2, air outlet pipes 3 are plugged into the top of the connecting box 2 near both sides, a filter screen 7 is fixedly installed near the top of the inner cavity of the air outlet pipe 3, a cleaning component 5 is arranged at the bottom of the filter screen 7, a spray pipe 8 is installed on the top of the air outlet pipe 3, and an adjustment component 6 is arranged near both sides of the bottom of the inner cavity of the connecting box 2.

[0024] It should be noted that during the urea production process, the urea dust generated is discharged after being filtered through the filter. However, after the filter has been used for a period of time, its bottom surface is clogged with dust. When the filter is clogged, it needs to be shut down for cleaning, thereby reducing the efficiency of exhaust gas treatment. In order to solve the problems of the prior art, this solution solves the above-mentioned problems by adjusting the components.

[0025] In a further preferred embodiment of the present invention, Figure 4 , Figure 5 and Figure 6 As shown, the adjustment component 6 includes a servo motor 61 fixedly installed near one side of the top of the inner cavity of the connecting box 2 and a driving gear 62 fixedly installed on the end of the power output shaft of the servo motor 61, a hollow gear 63 is meshed on the rear side of the driving gear 62, and a plurality of driving rods 66 are movably inserted at the top of the hollow gear 63, and the top of the driving rod 66 is rotatably connected to a support seat 65, and the top of the support seat 65 is fixedly connected to the top of the inner cavity of the connecting box 2, and a shielding flap 64 is fixedly sleeved on the outer periphery of the driving rod 66 near the top.

[0026] In this embodiment, when the filter 7 needs to be cleaned and the air flow sensor 32 is working, the adjacent servo motor 61 is started through the controller 33, and the rotation of the power output shaft of the servo motor 61 drives the driving gear 62 fixed on the shaft end of the power output shaft of the servo motor 61 to rotate, thereby enabling the hollow gear 63 to rotate. By setting a driving rod 66, the shielding flap 64 can be deflected so that several shielding flaps 64 fit together to shield the support seat 65, thereby facilitating the cleaning of a single filter 7 without the need for staff to shut down the machinery for cleaning, thereby improving the use effect of the device.

[0027] In a further preferred embodiment of the present invention, Figure 4 , Figure 5 and Figure 6 As shown, a plurality of first arc grooves 632 are formed on the top of the hollow gear 63, and the driving rods 66 are movable through the inner cavities of adjacent first arc grooves 632. An L-shaped plug rod 631 is fixedly installed on the top of the hollow gear 63 near the front and rear sides, and a plurality of protrusions 633 are fixedly installed on the top of the hollow gear 63.

[0028] In this embodiment, during the rotation of the hollow gear 63 , the shielding flap 64 can be deflected by the adjacent driving rod 66 under the action of the adjacent first arc-shaped groove 632 and the driving rod 66 .

[0029] In a further preferred embodiment of the present invention, Figure 4 , Figure 5 and Figure 6 As shown, a circular groove 651 is opened on the outer periphery of the support seat 65, and the opposite ends of the L-shaped insertion rod 631 are movably inserted in the inner cavity of the adjacent circular groove 651, and a second arc groove 641 is opened on the bottom of the shielding flap 64, and the protrusion 633 is movably inserted in the inner cavity of the adjacent second arc groove 641.

[0030] In this embodiment, the projection 633 is inserted into the inner cavity of the adjacent second arc-shaped groove 641 , so that the shielding flap 64 can be limited when moving.

[0031] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 As shown, a connecting rod 31 is fixedly installed on one side of the inner cavity of the air outlet pipe 3, an air flow sensor 32 is fixedly installed on the end of the connecting rod 31, and a controller 33 is fixedly installed near the middle position on the top of the connection box 2.

[0032] In this embodiment, by setting up an air flow sensor 32 and cooperating with a controller 33, when the filter 7 at a certain place is blocked, the controller 33 can drive the two servo motors 61 to open the shielding flap 64 on one side and close the shielding flap 64 on the other side, so as to facilitate the cleaning of the filter 7 at the closed shielding flap 64.

[0033] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, the cleaning assembly 5 includes a vertical plate 51 fixedly installed on the top of the connection box 2 near one side and a hydraulic rod 52 fixedly installed on the other side of the vertical plate 51, a rack plate 53 is fixedly installed on the end of the hydraulic rod 52, a rotating gear 54 is meshed on the top of the rack plate 53, a cross bar 55 is fixedly installed at the front center of the rotating gear 54, the end of the cross bar 55 movably passes through the inner cavity of the air outlet pipe 3, and a driving bevel gear 56 is fixedly installed, the front side of the driving bevel gear 56 is meshed with a driven bevel gear 57, the top of the driven bevel gear 57 is fixedly installed with a vertical rod 58, the top of the vertical rod 58 is fixedly installed with a cleaning brush 59, and the cleaning brush 59 and the filter screen 7 are arranged to fit each other.

[0034] In this embodiment, when the filter 7 is cleaned, the rack plate 53 can be rotated under the drive of the hydraulic rod 52, and then the rotating gear 54 meshing with the rack plate 53 can be rotated. With the cooperation of the cross bar 55, the active bevel gear 56, the driven bevel gear 57, the vertical bar 58 and the cleaning brush 59, the bottom of the filter 7 can be cleaned by the cleaning brush 59, which can prevent the filter 7 from being blocked.

[0035] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 ,and Figure 3 As shown, a support plate 581 is rotatably connected to the outer periphery of the vertical rod 58 near the middle position, and one side of the support plate 581 is fixedly connected to the inner cavity side wall of the air outlet pipe 3.

[0036] In this embodiment, the vertical rod 58 can be supported by providing a support plate 581 .

[0037] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present invention.

[0038] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0039] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0040] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A urea production tail gas anti-agglomeration mechanism, comprising a connecting pipe (1), characterized in that: A connecting flange (4) is fixedly installed at the bottom of the connecting pipe (1), a connecting box (2) is plugged into the top of the connecting pipe (1), an air outlet pipe (3) is plugged into the top of the connecting box (2) near both sides, a filter screen (7) is fixedly installed near the top of the inner cavity of the air outlet pipe (3), a cleaning component (5) is arranged at the bottom of the filter screen (7), a spray pipe (8) is installed at the top of the air outlet pipe (3), and an adjustment component (6) is arranged near both sides of the bottom of the inner cavity of the connecting box (2); the adjustment component (6) comprises a filter screen (7) fixedly installed on the connecting box ( 2) A servo motor (61) near one side of the top of the inner cavity and a driving gear (62) fixedly mounted with the end of the power output shaft of the servo motor (61); a hollow gear (63) is meshed with the rear side of the driving gear (62); a plurality of driving rods (66) are movably inserted at the top of the hollow gear (63); the tops of the driving rods (66) are rotatably connected with a support seat (65); the tops of the support seats (65) are fixedly connected to the top of the inner cavity of the connection box (2); and shielding flaps (64) are fixedly sleeved on the outer periphery of the driving rods (66) near the top.

2. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that: The top of the hollow gear (63) is provided with a plurality of first arc-shaped grooves (632), and the driving rods (66) are movable and penetrate the inner cavities of adjacent first arc-shaped grooves (632), and the top of the hollow gear (63) is fixedly installed with L-shaped insertion rods (631) near the front and rear sides, and the top of the hollow gear (63) is fixedly installed with a plurality of protrusions (633).

3. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that: The outer periphery of the support seat (65) is provided with a circular groove (651), and the opposite ends of the L-shaped insertion rod (631) are movably inserted into the inner cavity of the adjacent circular groove (651), and the bottom of the shielding flap (64) is provided with a second arc groove (641), and the protrusions (633) are movably inserted into the inner cavity of the adjacent second arc groove (641).

4. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that: A connecting rod (31) is fixedly mounted on one side of the inner cavity of the air outlet pipe (3), an air flow sensor (32) is fixedly mounted on the end of the connecting rod (31), and a controller (33) is fixedly mounted near the middle position on the top of the connection box (2).

5. The urea production tail gas anti-agglomeration mechanism according to claim 1, characterized in that: The cleaning assembly (5) comprises a vertical plate (51) fixedly mounted on one side of the top of the connection box (2) and a hydraulic rod (52) fixedly mounted on the other side of the vertical plate (51); a rack plate (53) is fixedly mounted on the end of the hydraulic rod (52); a rotating gear (54) is meshed on the top of the rack plate (53); a cross bar (55) is fixedly mounted at the center of the front side of the rotating gear (54); the end of the cross bar (55) movably penetrates the inner cavity of the air outlet pipe (3) and is fixedly mounted with an active bevel gear (56); a driven bevel gear (57) is meshed on the front side of the active bevel gear (56); a vertical rod (58) is fixedly mounted on the top of the driven bevel gear (57); a cleaning brush (59) is fixedly mounted on the top of the vertical rod (58); the cleaning brush (59) and the filter screen (7) are arranged to fit each other.

6. The urea production tail gas anti-agglomeration mechanism according to claim 5, characterized in that: A support plate (581) is rotatably connected to the outer periphery of the vertical rod (58) near the middle position, and one side of the support plate (581) is fixedly connected to the inner cavity side wall of the air outlet pipe (3).

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