Environment-friendly desulfurization stirrer for thermal power plant

Abstract

The invention relates to the technical field of stirrers, and discloses an environment-friendly desulfurization stirrer for a thermal power plant, which comprises a motor, a belt pulley piston ring is arranged at the output end of the motor, a second belt pulley is arranged on the outer ring of the belt pulley piston ring, and a motor mounting plate is arranged at the bottom of the motor. An electromechanical supporting screw penetrates through and is in threaded connection with the bottom of the motor mounting plate, a rack penetrates through and is in threaded connection with the bottom of the electromechanical supporting screw, a flange is arranged on one side of the rack, a bolt penetrates through and is in threaded connection with one side of the rack and the flange, and a bearing seat flange is arranged on one side of the flange; and a bearing seat flange is arranged on the inner wall of the rack. The thickness of a rack steel plate is increased; the thickness of an upper steel plate and a lower steel plate of the support is changed from 10mm to 14mm, and the thickness of a flange of a middle bearing seat is changed from 17mm to 25mm, so that when a mechanical seal is replaced, two bolt ejection holes of the flange of the middle bearing seat thicken the whole rotor part, and deformation can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stirrers, in particular to an environment-friendly desulfurization stirrer for thermal power plants. BACKGROUND

[0002] Thermal power plant, referred to as thermal power plant, is a plant that uses fuel as fuel to produce electric energy. Its basic production process is: fuel heating water to generate steam when burning, converting the chemical energy of fuel into heat energy, steam pressure driving the steam turbine to rotate, converting heat energy into mechanical energy, and then the steam turbine drives the generator to rotate, converting mechanical energy into electric energy.

[0003] The existing stirrer is provided with three bearings including a mechanical seal, which requires high concentricity of the shaft. Because the bearing capacity of the shaft is relatively long, deformation occurs between the second bearing seat and the mechanical seal after the shaft is used for a period of time, and the support may also be deformed and sag. After replacing the new bearing seat and mechanical seal, the three bearings are not on the same axis, which increases the additional load during work, and phenomena such as increased current, shaft seizure, and bearing damage occur, which also accelerates the failure of the mechanical seal. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an environment-friendly desulfurization stirrer for thermal power plants, which solves the problems.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: an environment-friendly desulfurization stirrer for thermal power plants, comprising an electromechanical device, wherein the output end of the electromechanical device is provided with a belt pulley expansion ring, the outer ring of the belt pulley expansion ring is provided with a belt pulley two, the bottom of the electromechanical device is provided with a motor mounting plate, the bottom of the motor mounting plate is penetrated and threadedly connected with an electromechanical support screw rod, the bottom of the electromechanical support screw rod is penetrated and threadedly connected with a rack, one side of the rack is provided with a flange, the rack and the flange on one side are penetrated and threadedly connected with a bolt, one side of the flange is provided with a bearing seat flange, the inner wall of the rack is provided with a bearing seat flange, the bearing seat flange is fixedly connected with a bearing seat, the inner ring of the bearing seat is provided with a shaft, the outer ring of the shaft is provided with a key, the outer ring of the key is provided with an impeller, one side of the impeller is provided with an impeller pressing plate, one end of the shaft is provided with a belt pulley expansion ring, and the outer ring of the belt pulley expansion ring is provided with a belt pulley one.

[0006] Preferably, the outer ring of the shaft is slidingly connected with the impeller pressing plate, and one side of the shaft is penetrated and threadedly connected with an impeller pressing nut.

[0007] Preferably, the outer ring of the shaft is provided with a static sealing assembly.

[0008] Preferably, a mechanical seal is provided on the inner wall of the frame, and a bolt is threadedly connected to one side of the frame and the mechanical seal, and a shaft is provided on the inner ring of the mechanical seal.

[0009] Preferably, the frame is threadedly connected to the bearing seat flange on one side by bolts.

[0010] Preferably, a belt is provided between the first pulley and the second pulley.

[0011] Preferably, the bearing housing flange is threadedly connected to one side of the flange with bolts.

[0012] Working principle: When the electromechanical system is in use, it drives pulley two, belt, and pulley one to run, thereby driving the shaft to rotate and causing the impeller to perform agitation. The electromechanical system uses an 8-pole motor, increases the outer diameter of the impeller, and reduces the shaft speed, which can effectively reduce the vibration of the agitator. To improve the overall stability of the agitator without affecting mixing efficiency, the thickness of the frame steel plate was increased. The thickness of the upper and lower steel plates of the support was changed from 10mm to 14mm, and the thickness of the bearing seat flange in the middle was changed from 17mm to 25mm. This is because when replacing the mechanical seal, the entire rotor (including the shaft and impeller) needs to be pushed out through the two bolt holes of the middle bearing seat flange. The increased thickness effectively prevents deformation. The position of the bearing seat flange in the middle of the frame was moved towards the tower wall. Firstly, this extended the support point and better prevented the shaft from bending and deforming during operation. Secondly, it reduced the load on the second intermediate bearing, increasing the bearing's service life. The impeller support lever arm was shortened, increasing the bearing's service life. Finally, the bearing in the mechanical seal was removed. The mechanical seal only performs a sealing function and no longer provides support, preventing issues such as loose shaft sleeves or positional shifts, thus improving the mechanical seal's service life.

[0013] This invention provides an environmentally friendly desulfurization agitator for thermal power plants. It has the following beneficial effects: This invention increases the thickness of the frame steel plate by thickening the frame, bearing housing flange, and bearing housing. The thickness of the upper and lower steel plates of the support is changed from 10mm to 14mm, and the thickness of the flange for mounting the bearing housing in the middle is changed from 17mm to 25mm. This is because when replacing the mechanical seal, the two bolt protrusion holes of the middle bearing housing flange will block the entire rotor part (including the shaft and impeller). Thickening the plate effectively prevents deformation. The position of the bearing housing flange in the middle of the frame is moved towards the tower wall, shortening the impeller support lever arm and improving the bearing service life. By removing the bearing inside the mechanical seal, the mechanical seal only performs a sealing function and no longer provides support. This prevents phenomena such as loose shaft sleeve or positional displacement of the mechanical seal shaft, thus improving the service life of the mechanical seal. Attached Figure Description

[0014] Figure 1 This is a side view of the present invention; Figure 2This is a front view of the pulley structure of the present invention.

[0015] The components include: 1. Impeller clamping nut; 2. Impeller pressure plate; 3. Key; 4. Impeller; 5. Shaft; 6. Static sealing assembly; 7. Mechanical seal; 8. Electromechanical support screw; 9. Electromechanical components; 10. Motor mounting plate; 11. Bearing housing; 12. Bearing housing flange; 13. Pulley one; 14. Pulley expansion ring; 15. Pulley two; 16. Belt; 17. Frame; 18. Flange; 19. Bolt. Detailed Implementation

[0016] The technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example: Please see the appendix Figure 1 -Appendix Figure 2 This invention provides an environmentally friendly desulfurization agitator for thermal power plants, comprising an electromechanical unit 9. The output end of the electromechanical unit 9 is provided with a pulley expansion ring 14, and a second pulley 15 is provided on the outer ring of the pulley expansion ring 14. A motor mounting plate 10 is provided at the bottom of the electromechanical unit 9. An electromechanical support screw 8 is threaded through and connected to the bottom of the motor mounting plate 10. A frame 17 is threaded through and connected to the bottom of the electromechanical support screw 8. A flange 18 is provided on one side of the frame 17. A bolt 19 is threaded through and connected to one side of the frame 17 and the flange 18. A bearing seat flange 12 is provided on one side of the flange 18. A bearing seat flange 12 is provided on the inner wall of the frame 17. A bearing seat 11 is fixedly connected to the inner ring of the bearing seat flange 12. A shaft 5 is provided on the inner ring of the bearing seat 11. A key 3 is provided on the outer ring of the shaft 5. An impeller 4 is provided on the outer ring of the key 3. An impeller pressure plate 2 is provided on one side of the impeller 4. A pulley expansion ring 14 is provided at one end of the shaft 5, and a first pulley 13 is provided on the outer ring of the pulley expansion ring 14.

[0018] Utilizing advanced laser cutting technology, the concentricity and perpendicularity of the bearing housing 11 mounting flange 18 and bearing housing flange 12 are effectively guaranteed, ensuring a straight line between the three points and guaranteeing long-term stable operation of the agitator. The frame 17 is thickened overall, improving its strength; and specialized tooling and cutting tools are used during processing. This ensures that the two bearing positions and the mechanical seal position are machined in one go (commonly known as "one-cut"), reducing errors during processing and improving the concentricity and perpendicularity of these three positions.

[0019] The outer ring of shaft 5 is slidably connected to impeller pressure plate 2. One side of shaft 5 is threadedly connected to impeller clamping nut 1. The outer ring of shaft 5 is provided with static sealing component 6. The inner wall of frame 17 is provided with mechanical seal 7. One side of frame 17 and mechanical seal 7 is threadedly connected to bolt 19. The inner ring of mechanical seal 7 is provided with shaft 5. One side of frame 17 and bearing seat flange 12 is threadedly connected to bolt 19. A belt 16 is provided between pulley 13 and pulley 2 15. One side of bearing seat flange 12 and flange 18 is threadedly connected to bolt 19.

[0020] The bearing housing 11 inside the frame 17 is installed with the mechanical seal 7 using bolts 19. The motor mounting plate 10 is installed by using an electromechanical support screw 8 and a nut to install it onto the frame 17. Pulley 13 and Pulley 2 15 are both fixed by the pulley expansion ring 14, i.e., the tightening sleeve. Using the pulley expansion ring 14 to connect can eliminate the gap between the shaft and the hub, improve the alignment accuracy, and only the bolts need to be loosened during disassembly.

[0021] 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. An environmentally friendly desulfurization stirrer for thermal power plants, comprising an electromechanical device (9), characterized in that, The electromechanical (9) output end is provided with a belt pulley ring (14), the outer ring of the belt pulley ring (14) is provided with a belt pulley two (15), the bottom of the electromechanical (9) is provided with a motor mounting plate (10), the bottom of the motor mounting plate (10) is penetrated and threadedly connected with an electromechanical support screw (8), the bottom of the electromechanical support screw (8) is penetrated and threadedly connected with a rack (17), one side of the rack (17) is provided with a flange (18), the rack (17) and the flange (18) side are penetrated and threadedly connected with a bolt (19), one side of the flange (18) is provided with a bearing seat flange (12), the inner wall of the rack (17) is provided with a bearing seat flange (12), the inner ring of the bearing seat flange (12) is fixedly connected with a bearing seat (11), the inner ring of the bearing seat (11) is provided with a shaft (5), the outer ring of the shaft (5) is provided with a key (3), the outer ring of the key (3) is provided with an impeller (4), one side of the impeller (4) is provided with an impeller pressing plate (2), one end of the shaft (5) is provided with a belt pulley ring (14), and the outer ring of the belt pulley ring (14) is provided with a belt pulley one (13).

2. The environment-friendly desulfurization stirrer for thermal power plants according to claim 1, characterized in that, The outer ring of the shaft (5) is slidably connected with the impeller pressing plate (2), and one side of the shaft (5) is penetrated and threadedly connected with the impeller pressing nut (1).

3. The environment-friendly desulfurization stirrer for thermal power plants according to claim 2, characterized in that, The outer ring of the shaft (5) is provided with a static sealing assembly (6).

4. The environment-friendly desulfurization stirrer for thermal power plants according to claim 2, characterized in that, The inner wall of the rack (17) is provided with a mechanical sealing element (7), the rack (17) and the mechanical sealing element (7) side are penetrated and threadedly connected with a bolt (19), and the inner ring of the mechanical sealing element (7) is provided with a shaft (5).

5. The environment-friendly desulfurization stirrer for thermal power plants according to claim 1, characterized in that, The rack (17) and the bearing seat flange (12) side are penetrated and threadedly connected with a bolt (19).

6. The environment-friendly desulfurizing stirrer for thermal power plants according to claim 5, characterized in that, The belt pulley one (13) and the belt pulley two (15) are provided with a belt (16).

7. The environment-friendly desulfurization stirrer for thermal power plants according to claim 1, characterized in that, The bearing seat flange (12) and the flange (18) side are penetrated and threadedly connected with a bolt (19).

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