Atomizer

Abstract

The utility model relates to an atomizer which is applied to the field of environment-friendly desulfurization equipment and comprises a shell, a shaft sleeve is arranged in the shell, a main shaft is arranged in the shaft sleeve in a penetrating and rotating mode, an atomizing disc is arranged on the main shaft, and a conveying unit used for conveying slurry to the atomizing disc is arranged on the shell. A driving unit used for driving the main shaft to rotate is arranged on the shell, a lower oil tank is arranged on the shaft sleeve, and a sealing unit used for preventing slurry from flowing to the lower oil tank from the atomizing disc is arranged on the lower oil tank. The slurry atomizing device has the technical effects that the driving unit is started to drive the main shaft and the atomizing disc to rotate at a high speed, so that slurry is atomized. When the slurry cannot be completely released through the atomizing disc, the slurry returned by the atomizer along the gap is blocked by the sealing unit, and the sealing unit plays a sealing role, so that the possibility that the slurry flows into the lower oil tank is reduced, and the use stability of the atomizer rotating at a high speed is improved.

Description

Technical Field

[0001] This application relates to the field of environmental desulfurization equipment technology, and in particular to an atomizer. Background Technology

[0002] Rotary atomizers generate strong centrifugal force through high-speed rotation, atomizing the liquid feed into fine droplets to increase the contact area with flue gas, promote chemical reactions, and are widely used in desulfurization treatment in power plants.

[0003] The high-speed rotating atomizer in related technologies includes a housing, within which a bushing is installed. A lower oil tank is connected to the bushing. A main shaft passes through the bushing and the lower oil tank. A bearing is installed between the main shaft and the bushing, and there are slight clearances between the main shaft and other components. An atomizing disc is installed at one end of the main shaft. Lubricating oil is contained in the lower oil tank, which lubricates the bearings inside the atomizer. During use, the liquid is injected into a distributor through a pipe, and then flows from the distributor into the atomizing disc. Subsequently, the drive mechanism is activated, causing the main shaft to rotate, which in turn drives the atomizing disc to rotate at high speed, thus atomizing the liquid.

[0004] During use, if the slurry cannot be completely released through the atomizing disc, it will flow upward along the gap in the main shaft, causing backflow. Subsequently, the slurry flows into the lower oil tank through the gap, where it neutralizes with the lubricating oil. This neutralized slurry will damage the bearings during use, making it difficult for the high-speed rotating atomizer to function properly, and in severe cases, rendering the atomizer unusable. Summary of the Invention

[0005] To help solve the problem in related technologies where slurry backflow during use easily damages the bearings, making it difficult for high-speed rotating atomizers to operate normally, this application provides an atomizer with the following technical solution: It includes a housing, a bushing inside the housing, a main shaft passing through and rotatably connected to the bushing, an atomizing disc on the main shaft, a conveying unit on the housing for conveying slurry to the atomizing disc, a drive unit on the housing for driving the main shaft to rotate, a lower oil tank on the bushing, and a sealing unit on the lower oil tank for preventing slurry from flowing from the atomizing disc to the lower oil tank.

[0006] In one specific implementation, the sealing unit includes a sealing block disposed on the lower oil tank, the sealing block having an installation hole on its surface facing the lower oil tank, the main shaft passing through the lower oil tank and the installation hole in sequence, a placement groove being provided on the wall of the installation hole, a sealing element matching the placement groove being disposed in the placement groove, and the main shaft being rotatably connected to the inner edge of the sealing element.

[0007] In one specific implementation, the seal includes a sealing ring that matches the placement groove, the inner edge of the sealing ring having an arc-shaped retaining ring, the main shaft abutting against the inner edge of the arc-shaped retaining ring, and the main shaft rotating relative to the arc-shaped retaining ring at the inner edge of the arc-shaped retaining ring.

[0008] In one specific implementation, the number of the arc-shaped retaining rings is set to two, and the two arc-shaped retaining rings are arranged along the main shaft axis.

[0009] In one specific implementation, the sealing ring is made of stainless steel and the arc-shaped retaining ring is made of polytetrafluoroethylene.

[0010] In one specific implementation, the lower oil tank is provided with a mounting block, and the mounting block is provided with a liquid sensor; when the liquid sensor detects slurry, the drive unit stops.

[0011] In one specific implementation, the outer edge of the sealing block is provided with a mounting ring, the outer edge of the mounting ring is provided with an annular groove, a sealing ring matching the annular groove is provided in the annular groove, and the sealing ring is pressed against the housing and the annular groove.

[0012] In one specific implementation, a fan is provided inside the housing, and several air holes are provided on the mounting ring.

[0013] In one specific implementation, the delivery unit includes a liquid inlet pipe disposed on the housing, a liquid inlet hole corresponding to the liquid inlet pipe is provided on the mounting ring, a distributor is provided on the mounting ring, and the distributor is provided with a flow channel communicating with the liquid inlet hole and the atomizing disc.

[0014] In one specific implementation, the drive unit includes a drive motor mounted on the housing, the output end of the drive motor is provided with a first gear, one end of the main shaft is fixedly fitted with a second gear, and the first gear and the second gear are connected by a gear set transmission.

[0015] In summary, this application has the following beneficial technical effects: The start-up drive unit drives the main shaft and atomizing disc to rotate at high speed, thereby atomizing the slurry. When the slurry cannot be completely released through the atomizing disc, the slurry returning from the atomizer along the gap is blocked by the sealing unit. The sealing unit plays a sealing role, reducing the possibility of slurry flowing into the lower oil tank and improving the operational stability of the high-speed rotating atomizer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 2 This is a cross-sectional schematic diagram used in the embodiments of this application to illustrate the lower fuel tank.

[0018] Figure 3 This is a schematic diagram illustrating the structure of the liquid sensor in the embodiments of this application.

[0019] Figure 4 This is a schematic diagram illustrating the structure of the placement slot in the embodiments of this application.

[0020] Figure 5 This is a schematic diagram illustrating the structure of the arc-shaped retaining ring in the embodiments of this application.

[0021] Reference numerals: 1. Housing; 2. Bushing; 3. Main shaft; 4. Lower oil tank; 5. Sealing block; 6. Mounting hole; 7. Placement groove; 8. Sealing ring; 9. Arc-shaped retaining ring; 10. Liquid sensor; 11. Mounting ring; 12. Annular groove; 13. Air hole; 14. Liquid inlet pipe; 15. Distributor; 16. First gear; 17. Second gear; 18. Liquid inlet hole; 19. Bearing sleeve; 20. Process water distributor; 21. Baffle plate; 22. Lime slurry distributor. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses an atomizer.

[0024] Reference Figure 1 , Figure 2 and Figure 3 The atomizer includes a housing 1, a bushing 2 installed inside the housing 1, a main shaft 3 passing through and rotatably connected to the bushing 2, an atomizing disc fixedly fitted at one end of the main shaft 3, a conveying unit for conveying the slurry to the atomizing disc on the housing 1, a drive unit for driving the main shaft 3 to rotate on the housing 1, a lower oil tank 4 installed on the bushing 2, and a sealing unit for preventing the slurry from flowing from the atomizing disc to the lower oil tank 4 on the lower oil tank 4.

[0025] Therefore, the drive unit is activated, causing the main shaft 3 and the atomizing disc to rotate at high speed, thereby atomizing the slurry. When the slurry cannot be completely released through the atomizing disc, the slurry returning from the atomizer along the gap is blocked by the sealing unit. The sealing unit plays a sealing role, reducing the possibility of slurry flowing into the lower oil tank 4, and improving the operational stability of the high-speed rotating atomizer.

[0026] Reference Figure 4 and Figure 5The sealing unit includes a sealing block 5 installed on the lower oil tank 4. The sealing block 5 has a mounting hole 6 on its surface facing the lower oil tank 4. The main shaft 3 passes through the lower oil tank 4 and the mounting hole 6 in sequence. A placement groove 7 is provided on the wall of the mounting hole 6. A sealing element matching the size of the placement groove 7 is provided in the placement groove 7. The main shaft 3 is rotatably connected to the inner edge of the sealing element. The placement groove 7 limits the position of the sealing element and improves the stability of the sealing element position.

[0027] Reference Figure 4 and Figure 5 The sealing element includes a sealing ring 8 that matches the size of the placement groove 7. An arc-shaped retaining ring 9 is connected to the inner edge of the sealing ring 8. In this embodiment, the sealing ring 8 is made of high-temperature resistant stainless steel, and the arc-shaped retaining ring 9 is made of polytetrafluoroethylene (PTFE). PTFE is elastic, has a smooth surface, and an extremely low coefficient of friction, making it suitable for corrosive environments such as chemical equipment. In this embodiment, two arc-shaped retaining rings 9 are set along the axial direction of the main shaft 3, forming a double-layer sealing structure and a double barrier, further improving the sealing effect of the sealing element, reducing the possibility of slurry backflow, and significantly improving sealing reliability.

[0028] It should be noted that, in the embodiments of this application, during the assembly of the seal, the gap between the arc-shaped retaining ring 9 and the main shaft 3 should not be too large, as an excessively large gap makes it difficult to prevent backflow; conversely, the gap between the arc-shaped retaining ring 9 and the main shaft 3 should not be too small, as an excessively small gap will cause the high-speed rotation of the main shaft 3 to rub against the seal, resulting in damage to both the main shaft 3 and the seal. The main shaft 3 should be pressed tightly against the inner edge of the arc-shaped retaining ring 9, and the main shaft 3 should rotate relative to the arc-shaped retaining ring 9 within the inner edge of the arc-shaped retaining ring 9.

[0029] Reference Figure 3 The lower oil tank 4 has a mounting block bolted on it, and the outer edge of the sealing block 5 is fixedly connected to a mounting ring 11. A liquid sensor 10 is mounted on the mounting block. If the seal is damaged or worn, causing backflow, the drive unit will immediately stop when the liquid sensor 10 detects the backflow, thereby achieving automatic shutdown of the atomizer equipment.

[0030] Reference Figure 3 and Figure 4 A fan is installed inside the housing 1, and a plurality of air holes 13 are provided on the mounting ring 11. In this embodiment, the plurality of air holes 13 are evenly distributed along the circumference of the mounting ring 11. Since the atomizer of this application is used for desulfurization in power plants, the housing 1 is in a high-temperature environment of 220°C. The fan and air holes 13 are used to cool the inside of the housing 1, thereby further improving the stability of the atomizer when processing large flue gas.

[0031] Reference Figure 1 and Figure 2The conveying unit includes an inlet pipe 14 mounted on the housing 1. An inlet hole 18 corresponding to the position of the inlet pipe 14 is provided on the mounting ring 11. A distributor 15 is bolted to the mounting ring 11. The distributor 15 has a flow channel communicating with the inlet hole 18 and the atomizing disc. In this embodiment, the number of inlet pipes 14 is set to two, one for process water and the other for lime slurry. The number of inlet holes 18 and distributors 15 is also set to two, one for process water (20) and the other for lime slurry (22). A partition 21 can be provided between the two distributors 15 according to actual conditions, and the partition 21 has flow holes for the slurry to pass through. Therefore, the slurry flows from the inlet pipe 14 into the inlet hole 18. In this embodiment, the process water flows through the inlet hole 18 and through the flow channel of the process water distributor 20 before flowing into the center of the atomizer for further atomization. The lime slurry flows through the inlet hole 18 and through the through hole of the process water distributor 20 before flowing into the flow hole of the baffle 21, and then into the flow channel of the lime slurry distributor 22. Finally, the lime slurry flows into the center of the atomizer for further atomization.

[0032] Reference Figure 3 and Figure 4 An annular groove 12 is provided on the outer edge of the mounting ring 11. A sealing ring matching the size of the annular groove 12 is installed in the annular groove 12. The sealing ring is pressed between the housing 1 and the annular groove 12. In this embodiment, the sealing ring is made of rubber material and plays a sealing role, reducing the possibility of slurry overflow.

[0033] Reference Figure 1 and Figure 2 The drive unit includes a drive motor mounted on the housing 1. A first gear 16 is connected to the output end of the drive motor, and a second gear 17 is fixedly mounted on one end of the main shaft 3. The first gear 16 and the second gear 17 are connected via a gear set. Therefore, starting the drive motor rotates the first gear 16 at its output end. Since the first gear 16 and the second gear 17 are connected via a gear set, the first gear 16 drives the second gear 17 to rotate, which in turn drives the main shaft 3 and the atomizing disc to rotate at high speed. This atomizes the slurry in the atomizing disc into fine droplets, increasing the contact area with the flue gas, promoting chemical reactions, and treating the flue gas to meet emission standards. Simultaneously, when the liquid sensor 10 detects slurry, the drive unit immediately stops, i.e., the drive motor stops.

[0034] The implementation principle of this application embodiment is as follows: The drive motor is started, causing the first gear 16 at the output end of the drive motor to rotate. Since the first gear 16 and the second gear 17 are connected by a gear set, the first gear 16 drives the second gear 17 to rotate, and the second gear 17 drives the main shaft 3 and the atomizing disc to rotate at high speed, atomizing the slurry in the atomizing disc into fine droplets to increase the contact area with the flue gas, promote chemical reactions, and treat the flue gas to meet emission standards. When the slurry cannot be completely released through the atomizing disc, the slurry returning along the gaps in the atomizer is blocked by the sealing ring 8 and the arc-shaped baffle ring 9. The arc-shaped baffle ring 9 acts as a seal, and the double-layer sealing structure forms a double barrier, further improving the sealing effect of the seals, reducing the possibility of slurry flowing into the lower oil tank 4, and improving the stability of the high-speed rotating atomizer. Furthermore, this application has undergone multiple tests, taking a maximum flow rate of 10 cubic meters per hour as an example, and can also achieve good anti-return slurry effect, enabling the atomizer to meet the processing capacity of large flue gas volumes, reducing equipment failure frequency, and reducing maintenance costs.

[0035] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An atomiser characterised in that: The utility model provides a slurry atomizing device, including shell (1), be equipped with shaft sleeve (2) in shell (1), be equipped with main shaft (3) and rotate the connection in the shaft sleeve (2), be equipped with atomizing disc on main shaft (3), be equipped with the delivery unit for delivering slurry to atomizing disc on shell (1), be equipped with the drive unit for driving main shaft (3) rotation on shell (1), be equipped with lower oil tank (4) on shaft sleeve (2), be equipped with sealing unit for preventing slurry from atomizing disc flowing to lower oil tank (4) on lower oil tank (4).

2. The atomizer of claim 1, wherein: The sealing unit includes a sealing block (5) disposed on the lower oil tank (4), the sealing block (5) has a mounting hole (6) formed on the surface thereof facing the lower oil tank (4), the main shaft (3) sequentially passes through the lower oil tank (4) and the mounting hole (6), the mounting hole (6) has a placing groove (7) formed on the hole wall thereof, the placing groove (7) is provided with a sealing member matched with the placing groove (7), and the main shaft (3) is rotationally connected to the inner edge of the sealing member.

3. The atomizer of claim 2, wherein: The sealing member includes a sealing ring (8) matched with the placing groove (7), the inner edge of the sealing ring (8) is provided with an arc-shaped blocking ring (9), the main shaft (3) abuts against the inner edge of the arc-shaped blocking ring (9), and the main shaft (3) rotates relative to the arc-shaped blocking ring (9) at the inner edge of the arc-shaped blocking ring (9).

4. The atomizer of claim 3, wherein: The number of the arc-shaped blocking rings (9) is two, and the two arc-shaped blocking rings (9) are arranged along the axial direction of the main shaft (3).

5. The atomizer of claim 3, wherein: The sealing ring (8) is made of stainless steel, and the arc-shaped blocking ring (9) is made of polytetrafluoroethylene.

6. The atomizer of claim 2, wherein: The lower oil tank (4) is provided with a mounting block, the mounting block is provided with a liquid sensor (10), and the drive unit stops running when the liquid sensor (10) detects slurry.

7. The atomizer of claim 2, wherein: The outer edge of the sealing block (5) is provided with a mounting ring (11), the outer edge of the mounting ring (11) is provided with an annular groove (12), the annular groove (12) is provided with a sealing ring matched with the annular groove (12), and the sealing ring abuts between the housing (1) and the annular groove (12).

8. The atomizer of claim 7, wherein: The housing (1) is provided with a fan, and the mounting ring (11) is provided with a plurality of air holes (13).

9. The atomizer of claim 7, wherein: The delivery unit includes an inlet pipe (14) disposed on the housing (1), the mounting ring (11) is provided with an inlet hole (18) corresponding to the inlet pipe (14), the mounting ring (11) is provided with a distributor (15), and the distributor (15) is provided with a flow channel communicating with the inlet hole (18) and the atomizing disc.

10. The atomizer of claim 1, wherein: The drive unit includes a drive motor disposed on the housing (1), the output end of the drive motor is provided with a first gear (16), one end of the main shaft (3) is fixedly provided with a second gear (17), and the first gear (16) and the second gear (17) are drivingly connected through a gear set.

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