A side agitator for desulfurization towers

Abstract

This utility model relates to a side agitator for desulfurization towers, belonging to the field of waste mixing technology. It includes an inclined tank, an agitator, an agitator shaft, a drive motor, and a stabilizing assembly. The agitator shaft axis forms an angle of 10-15° with the horizontal plane. The tank consists of a cylindrical body, an upper cover, and a bottom cover. The upper cover is equipped with a first bearing to support the agitator shaft. The stabilizing assembly includes a protruding post, a bearing seat, a second bearing, and a rotating adjusting rod. The rotating adjusting rod is fitted into the through hole of the protruding post via internal and external threads, and has a handwheel on its end face to adjust the position of the second bearing. Furthermore, the cylindrical body is equipped with an inlet pipe, an outlet pipe, and an oxidation vent pipe. The motor drives the shaft through a reduction gearbox. This utility model, through a dual-bearing, dual-point support structure, effectively absorbs the radial oscillation and axial thrust of the agitator shaft, ensuring that the runout of the sealing end face is within a safe range, significantly improving the stability and sealing reliability of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of waste mixing technology, specifically relating to a side agitator for desulfurization towers. Background Technology

[0002] In the fields of waste treatment and environmental engineering, desulfurization towers are the core equipment of flue gas desulfurization systems. To prevent solid particle precipitation in the slurry inside the desulfurization tower, agitators (i.e., side agitators) are usually installed on the side of the tower wall. Due to the complex environment inside the desulfurization tower, the slurry often has high abrasiveness, high viscosity, and a certain pressure, which places extremely high demands on the operational stability of the side agitator.

[0003] Currently, traditional desulfurization tower side agitators face the following technical bottlenecks in practical applications:

[0004] 1. Severe radial oscillation: Because the agitator shaft is usually long and installed at an angle, the agitator blades will experience severe radial displacement when rotating at high speed and impacting the slurry. Traditional single-support structures are difficult to effectively counteract this dynamic load, resulting in radial oscillation of the shaft.

[0005] 2. Axial thrust imbalance: When the agitator pushes the fluid, it generates a huge reaction force (axial thrust). If there is a lack of an effective load-bearing structure, this thrust will directly act on the reducer or motor, shortening the service life of the drive system.

[0006] 3. Frequent seal failures: This is a core pain point in the industry. The radial oscillation and axial displacement of the shaft are directly transmitted to the sealing device, causing the run-out of the sealing end face to exceed the safe allowable range. This frequent run-out leads to uneven wear of the end face, opening of the sealing surface, and consequently, slurry leakage, increasing maintenance costs and affecting the normal operation of the desulfurization system.

[0007] In view of this, this solution was developed. Utility Model Content

[0008] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a stirrer for the side of the desulfurization tower, which directly "absorbs" the radial swing and axial thrust of the rotating shaft through a double bearing support structure, so that the runout of the sealing end face is always kept within a safe range.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a side agitator for a desulfurization tower, comprising an inclined tank, an agitator, an agitator shaft, a drive motor, and a stabilizing assembly. The tank has an inner cavity, and the agitator shaft extends into the inner cavity from the middle of one end face of the tank. The agitator is located at the bottom of the inner cavity where the agitator shaft is located. A first bearing is provided at the connection between the agitator shaft and the tank, and the drive motor is used to drive the agitator shaft to agitate.

[0010] An installation opening is formed on the outer peripheral surface of the tank. The stabilizing component includes a protrusion, a bearing seat, a second bearing, and a rotating adjustment rod. The protrusion has a through hole and is installed on the outer peripheral surface of the tank. The through hole corresponds to the installation opening, and an internal thread is formed on the inner peripheral surface of the through hole near the inner cavity.

[0011] The second load-bearing bearing is installed in the bearing housing. One end of the rotating adjusting rod extends into the end face of the bearing housing and is rotatably connected. The rotating adjusting rod has an external thread near the outer circumferential surface of the bearing housing. The external thread is adapted to the internal thread. The rotating adjusting rod is sealed to the through hole.

[0012] Furthermore, the tank body includes a cylindrical body, an upper cover, and a bottom cover. A mounting frustum is formed on the end face of the cylindrical body, and a mounting opening is formed at the mounting frustum. The upper cover is connected to the mounting frustum by a connector. A mounting hole is formed in the middle of the upper surface of the upper cover. The first bearing is engaged in the mounting hole. The bottom surface of the cylindrical body is connected to the bottom cover by a connector.

[0013] Furthermore, an inlet pipe is formed at the upper end of the outer circumferential surface of the cylinder body, and an outlet pipe is formed at the lower end of the outer circumferential surface of the cylinder body. The outlet pipe is located on the circumferential surface of the cylinder body near the bottom surface of the cylinder body.

[0014] Furthermore, the upper end of the cover is provided with a columnar and hollow mounting bracket, and a reduction gearbox is provided at the end of the mounting bracket. One end of the stirring shaft extends from the mounting bracket into the reduction gearbox and is connected to its output end. The drive motor is located on one side of the reduction gearbox and its output end is connected to the input end of the reduction gearbox.

[0015] Furthermore, the outer peripheral surface of the mounting bracket is formed with an outwardly extending side frame, and the base of the drive motor is mounted on the side frame.

[0016] Furthermore, a handwheel is provided on the end face of the rotating adjustment rod.

[0017] Furthermore, the rotating adjusting rod is located inside the through hole and has an annular sealing groove formed on its circumferential surface at the upper end of the external thread, and a sealing ring is provided inside the annular sealing groove.

[0018] Furthermore, a first mounting plate is formed at the lower end of the protruding post, a thickened platform is formed on the outer peripheral surface of the cylindrical body, the through hole is located on the surface of the thickened platform, and the first mounting plate and the thickened platform are detachably connected.

[0019] Furthermore, an oxidation vent pipe is provided on the cylinder body.

[0020] Furthermore, the angle between the axis of the stirring shaft and the horizontal plane is 10-15°.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Significantly improves operational stability and extends equipment life: This invention forms a reliable double-point support structure by setting a first load-bearing bearing at the connection between the stirring shaft and the tank body, and cooperating with a sturdy component containing a second load-bearing bearing. This structure can directly absorb the radial sway and axial thrust generated by the stirring shaft during rotation, effectively avoiding vibration and eccentric operation caused by the long shaft cantilever structure, and protecting the drive motor and reduction gearbox from damage by impact loads.

[0023] 2. Significantly improved sealing reliability and reduced leakage risk: Because the second load-bearing bearing in the stabilizing assembly provides secondary restraint for the agitator shaft, the runout of the mechanical seal end face at the contact point between the agitator shaft and the tank body is always kept within a safe range. This fundamentally solves the problem of uneven force on the sealing end face, accelerated wear, and even failure caused by shaft misalignment in traditional side agitators, ensuring zero-leakage operation of the agitator when handling high-wear, high-viscosity desulfurization slurry.

[0024] 3. The stabilizing component adopts a threaded fit structure between the rotating adjusting rod and the protruding post, and is equipped with a handwheel. The operator can fine-tune the position of the second bearing by using the handwheel according to the actual operating conditions, thereby achieving precise control over the support state of the stirring shaft, that is, alignment with the axis of the first bearing. At the same time, an annular sealing groove and a sealing ring are provided between the rotating adjusting rod and the through hole, ensuring overall sealing performance while maintaining adjustment flexibility. Attached Figure Description

[0025] Figure 1 This is a front view schematic diagram of a side agitator for a desulfurization tower according to the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of a side agitator for a desulfurization tower according to the present invention;

[0027] Figure 3 This is a cross-sectional view of a side agitator for a desulfurization tower according to the present invention.

[0028] Figure 4 In this utility model Figure 3 A magnified view of a portion of point A in the middle.

[0029] Reference numerals in the attached drawings: 1-Tank body; 11-Inlet pipe; 12-Outlet pipe; 13-Mounting frame; 14-Reduction gearbox; 15-Side frame; 16-Cylinder body; 17-Top cover; 18-Bottom cover; 19-First load-bearing bearing; 2-Agitator; 3-Agitator shaft; 4-Drive motor; 5-Stabilizing component; 51-Protruding column; 52-Bearing seat; 53-Second load-bearing bearing; 54-Rotating adjustment rod; 55-Handwheel. Detailed Implementation

[0030] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0031] like Figures 1-4 As shown, a side agitator for a desulfurization tower includes an inclined tank 1, an agitator 2, an agitator shaft 3, a drive motor 4, and a stabilizing assembly 5.

[0032] The tank body 1 is specifically composed of a cylindrical body 16, an upper cover 17, and a bottom cover 18. The cylindrical body 16 has a mounting frustum formed on its end face, with a mounting port at the frustum. An inlet pipe 11 for introducing slurry is formed at the upper end of the outer circumference of the cylindrical body 16, and a outlet pipe 12 is formed at the lower end, located near the bottom surface of the cylindrical body 16. In addition, an oxidation vent pipe is provided on the cylindrical body 16 for introducing oxidizing gas into the inner cavity. The upper cover 17 and the mounting frustum, as well as the bottom surface of the cylindrical body 16 and the bottom cover 18, are fixedly connected by specialized connectors. A mounting hole is formed in the center of the upper surface of the upper cover 17, and a first bearing 19 is fitted inside. The stirring shaft 3 passes through the upper cover 17 and extends into the inner cavity from this hole.

[0033] A columnar, hollow mounting bracket 13 is provided at the upper end of the top cover 17. A reduction gearbox 14 is provided at the end of the mounting bracket 13. One end of the stirring shaft 3 extends into the mounting bracket 13 and is connected to the output end of the reduction gearbox 14. A side frame 15 extends from the outer circumference of the mounting bracket 13, and the base of the drive motor 4 is mounted on the side frame 15. The output end of the drive motor 4 is connected to the input end of the reduction gearbox 14, and drives the stirring shaft 3 to rotate through the reduction mechanism, thereby driving the stirring paddle 2 located at the bottom of the inner cavity to stir.

[0034] To address the issues of radial sway and axial thrust, this design incorporates a stabilizing component 5. This component comprises a protruding post 51, a bearing housing 52, a second load-bearing bearing 53, and a rotary adjusting rod 54.

[0035] A thickened platform is formed on the outer peripheral surface of the cylinder body 16. A first mounting plate is formed at the lower end of the protrusion 51, and the stabilizing component 5 is fixed to the tank body 1 through the detachable connection between the first mounting plate and the thickened platform. The protrusion 51 has a through hole that corresponds to the mounting opening on the cylinder body 16. An internal thread is formed on the inner peripheral surface of the through hole near the inner cavity. A second bearing 53 is installed in the bearing seat 52 to support the shaft. One end of the rotating adjusting rod 54 extends into the end face of the bearing seat 52 and is rotatably connected to it. An external thread is formed on the outer peripheral surface of the rotating adjusting rod 54 near the bearing seat 52, and this external thread is adapted to the internal thread in the through hole.

[0036] A handwheel 55 is provided at the end of the rotary adjusting rod 54 for convenient manual operation. To prevent slurry leakage, an annular sealing groove is provided on the circumferential surface of the rotary adjusting rod 54 located inside the through hole and at the upper end of the external thread. A sealing ring is provided in the groove to ensure a sealed connection between the rotary adjusting rod 54 and the through hole.

[0037] During operation, the drive motor 4 drives the stirring shaft 3 to rotate at high speed through the reduction gearbox 14. The dual-point support structure of the first bearing 19 and the second bearing 53 effectively counteracts axial force. During adjustment, the operator can rotate the handwheel 55, utilizing the engagement of the external and internal threads, to fine-tune the rotation adjustment rod 54, thereby displacing the bearing seat 52 and precisely correcting the position of the second bearing 53. This ensures smooth operation of the stirring shaft 3, significantly reducing the risk of seal failure. Compared to existing fixed dual-point support structures, there is no need to calibrate the concentricity between the two bearings, reducing processing difficulty.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of the invention. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A side agitator for a desulfurization tower, characterized in that: The device includes an inclined tank, a stirring paddle, a stirring shaft, a drive motor, and a stabilizing assembly. The tank has an inner cavity, and the stirring shaft extends into the inner cavity from the middle of one end face of the tank. The stirring paddle is located at the bottom of the inner cavity where the stirring shaft is located. A first bearing is provided at the connection between the stirring shaft and the tank. The drive motor is used to drive the stirring shaft to agitate. An installation opening is formed on the outer peripheral surface of the tank. The stabilizing component includes a protrusion, a bearing seat, a second bearing, and a rotating adjustment rod. The protrusion has a through hole and is installed on the outer peripheral surface of the tank. The through hole corresponds to the installation opening, and an internal thread is formed on the inner peripheral surface of the through hole near the inner cavity. The second load-bearing bearing is installed in the bearing housing. One end of the rotating adjusting rod extends into the end face of the bearing housing and is rotatably connected. The rotating adjusting rod has an external thread near the outer circumferential surface of the bearing housing. The external thread is adapted to the internal thread. The rotating adjusting rod is sealed to the through hole.

2. The agitator for the side of a desulfurization tower according to claim 1, characterized in that: The tank includes a cylindrical body, an upper cover, and a bottom cover. A mounting frustum is formed on the end face of the cylindrical body, and a mounting opening is formed at the mounting frustum. The upper cover is connected to the mounting frustum by a connector. A mounting hole is formed in the middle of the upper surface of the upper cover. The first bearing is engaged in the mounting hole. The bottom surface of the cylindrical body is connected to the bottom cover by a connector.

3. The agitator for the side of a desulfurization tower according to claim 2, characterized in that: A feed pipe is formed at the upper end of the outer circumferential surface of the cylinder body, and a discharge pipe is formed at the lower end of the outer circumferential surface of the cylinder body. The discharge pipe is located on the circumferential surface of the cylinder body near the bottom surface of the cylinder body.

4. A side agitator for a desulfurization tower according to claim 2, characterized in that: The upper end of the cover is also provided with a columnar and hollow mounting bracket. A reduction gearbox is provided at the end of the mounting bracket. One end of the stirring shaft extends from the mounting bracket into the reduction gearbox and is connected to its output end. The drive motor is located on one side of the reduction gearbox and its output end is connected to the input end of the reduction gearbox.

5. A side agitator for a desulfurization tower according to claim 4, characterized in that: The mounting bracket has an outwardly extending side frame on its outer peripheral surface, and the base of the drive motor is mounted on the side frame.

6. A side agitator for a desulfurization tower according to claim 1, characterized in that: A handwheel is provided on the end face of the rotating adjustment rod.

7. A side agitator for a desulfurization tower according to claim 1, characterized in that: The rotating adjusting rod is located inside the through hole and has an annular sealing groove formed on its circumferential surface at the upper end of the external thread. A sealing ring is provided inside the annular sealing groove.

8. A side agitator for a desulfurization tower according to claim 2, characterized in that: A first mounting plate is formed at the lower end of the protruding post, and a thickened platform is formed on the outer peripheral surface of the cylindrical body. The through hole is located on the surface of the thickened platform, and the first mounting plate and the thickened platform are detachably connected.

9. A side agitator for a desulfurization tower according to claim 2, characterized in that: An oxidation vent pipe is provided on the cylinder body.

10. A side agitator for a desulfurization tower according to claim 1, characterized in that: The angle between the axis of the stirring shaft and the horizontal plane is 10-15°.

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