Semi-dry desulfurization and dust removal equipment for boiler

Abstract

The utility model provides semi-dry desulfurization and dust removal equipment for a boiler. The semi-dry desulfurization and dust removal equipment comprises a main body, ring teeth are fixedly arranged on the inner wall of the main body, a rotating shaft is rotationally arranged in the main body in the vertical direction, a spraying frame is fixedly arranged at the top of the rotating shaft, and a reciprocating lead screw is rotationally arranged on the spraying frame; a gear is fixedly arranged at the top of the reciprocating screw rod and meshed with the ring gear, and the bottom of the reciprocating screw rod is movably connected with the inner wall of the bottom of the main body; a moving plate is mounted between the rotating shaft and the reciprocating screw rod, one end of the moving plate is movably connected with the rotating shaft, the other end of the moving plate is in threaded connection with the reciprocating screw rod, and the moving plate, the reciprocating screw rod and the ball form a ball screw nut pair; the side, away from the movable plate, of the brush is attached to the inner side wall of the main body. By means of meshing of the gear and the ring teeth, in the process that the rotating shaft drives the brush to rotate, the brush can slide up and down in a reciprocating mode along the axis of the reciprocating lead screw. Therefore, the contact position of the brush and the inner wall of the main body is greatly changed, and impurity residues are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler dust removal, and in particular relates to boiler semi-dry desulfurization and dust removal equipment. Background Art

[0002] Semi-dry desulfurization is a flue gas desulfurization technology, which mainly includes rotary spray, circulating fluidized bed flue gas desulfurization, and moistened ash circulation desulfurization. The advantage of semi-dry desulfurization is that the by-products produced are solid and no wastewater is generated. After the boiler is desulfurized, calcium sulfate will remain inside the boiler. In order to remove the calcium sulfate residue, a dust removal device is generally used for cleaning.

[0003] The existing patent with announcement number CN219464273U discloses a semi-dry desulfurization and dust removal equipment for a boiler, including a boiler, wherein a motor is fixedly arranged on the top of the boiler, the output shaft of the motor passes through the top of the boiler, and the output shaft of the motor is fixedly sleeved with a driving wheel; a rotating drum is arranged in the boiler to rotate in a vertical direction, and a driven wheel is fixedly sleeved on the outer surface of the rotating drum, and the driven wheel is meshed with the driving wheel; a cleaning tube is fixedly arranged on the outer surface of the rotating drum, and a cleaning brush is fixedly arranged on the other side of the cleaning tube, and the cleaning brush is slidably matched with the inner wall of the boiler.

[0004] The motor of the above equipment drives the driving wheel to rotate, and the driving wheel drives the rotating drum to rotate through the driven wheel, so that the cleaning brush on the rotating drum is used to scrub the four sides of the boiler during the rotation of the rotating drum. Since the movement trajectory of the cleaning brush is single, the cleaning brush will only scrub a fixed position during the cleaning process, which is easy to cause impurities to remain and affect the overall cleaning effect. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a boiler semi-dry desulfurization and dust removal equipment.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A boiler semi-dry desulfurization and dust removal equipment comprises a main body, an inner wall of which is fixedly provided with a ring tooth, a rotating shaft is rotatably provided in the main body along the vertical direction, a spray rack is fixedly provided on the top of the rotating shaft, and a reciprocating screw is rotatably provided on the spray rack; a gear is fixedly provided on the top of the reciprocating screw, the gear is meshed with the ring tooth, and the bottom of the reciprocating screw is movably connected to the bottom inner wall of the main body; a movable plate is installed between the rotating shaft and the reciprocating screw, one end of the movable plate is movably connected to the rotating shaft, and the other end of the movable plate is threadedly connected to the reciprocating screw, and the movable plate, the reciprocating screw and the ball form a ball screw nut pair; a brush is fixedly provided on the end of the movable plate away from the rotating shaft, and the side of the brush away from the movable plate is in contact with the inner wall of the main body.

[0008] Furthermore, a motor is fixedly installed on the top of the main body, an output shaft of the motor passes through the top of the main body and is fixedly connected to the top of the rotating shaft, and the bottom of the rotating shaft is rotatably connected to the bottom inner wall of the main body.

[0009] Furthermore, an annular groove is provided inside the spray rack, a rotating ring is sealed and installed on the notch of the annular groove, the rotating ring is rotatably connected to the spray rack, a liquid inlet pipe is fixedly provided on the top of the rotating ring, the top of the liquid inlet pipe passes through the top of the main body and extends to the outside of the main body, a plurality of nozzles are provided at the bottom of the spray rack; a liquid outlet pipe is provided at the bottom of the side wall of the main body.

[0010] Furthermore, the brush is arranged in an arc shape.

[0011] This application has the following beneficial effects:

[0012] By meshing the gear and the ring teeth, the brush will slide up and down along the axis of the reciprocating screw when the shaft drives the brush to rotate, thereby greatly changing the contact position between the brush and the inner wall of the main body, reducing the residual impurities and improving the cleaning effect of the brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

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

[0015] Figure 2 It is a cross-sectional view of the interior of the main body of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the rotating ring of the utility model.

[0017] Description of reference numerals:

[0018] 1. Main body; 2. Liquid outlet pipe; 3. Motor; 4. Liquid inlet pipe; 5. Ring gear; 6. Spray rack; 7. Gear; 8. Reciprocating screw; 9. Rotating shaft; 10. Moving plate; 11. Brush; 12. Rotating ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-Figure 3 As shown, the technical solution adopted by the utility model is as follows: a boiler semi-dry desulfurization and dust removal device, including a main body 1, a motor 3 is fixedly arranged on the top of the main body 1, the output shaft of the motor 3 movably passes through the top of the main body 1, and a rotating shaft 9 is fixedly arranged on the output shaft of the motor 3. The bottom of the rotating shaft 9 is rotatably connected to the bottom inner wall of the main body 1.

[0021] The circumferential surface of the rotating shaft 9 is fixedly provided with a spray rack 6. An annular groove for storing water is provided at the top center of the spray rack 6, and a rotating ring 12 is rotatably provided at the top of the annular groove, and the rotating ring 12 blocks the annular groove. A limiting ring is coaxially fixedly provided on the inner side of the rotating ring 12, and an annular limiting groove is provided on the spray rack 6, and the limiting ring is coaxially rotatably fitted in the limiting groove. A liquid inlet pipe 4 is fixedly provided at the top of the rotating ring 12, and the top of the liquid inlet pipe 4 passes through the top of the main body 1 and is fixedly connected to the main body 1, and a plurality of spray heads are provided at the bottom of the spray rack 6.

[0022] A liquid outlet pipe 2 is fixedly arranged at the bottom of the side wall of the main body 1 .

[0023] The external solution can be transported into the spray rack 6 through the liquid inlet pipe 4. The nozzle at the bottom of the spray rack 6 is used to transport the solution in the spray rack 6 into the main body 1. The liquid outlet pipe 2 is used to discharge the liquid in the main body 1.

[0024] A reciprocating screw rod 8 is rotatably arranged on the spray rack 6. The top of the reciprocating screw rod 8 rotates and penetrates the spray rack 6. A gear 7 is fixedly sleeved on the top of the reciprocating screw rod 8. The bottom of the gear 7 is rotatably connected to the top of the spray rack 6. The gear 7 is meshed with the ring gear 5 fixedly arranged on the inner wall of the main body 1. The bottom of the reciprocating screw rod 8 is movably connected to the bottom inner wall of the main body 1.

[0025] The axis direction of the rotating shaft 9 is the same as that of the reciprocating screw 8, and a moving plate 10 is installed between the rotating shaft 9 and the reciprocating screw 8. One end of the moving plate 10 is movably connected to the rotating shaft 9, and the other end of the moving plate 10 is threadedly connected to the reciprocating screw 8, and the moving plate 10, the reciprocating screw 8 and the ball form a ball screw nut pair. A brush 11 is fixedly arranged at one end of the moving plate 10 away from the rotating shaft 9, and the brush 11 is arranged in an arc shape, and the side of the brush 11 away from the rotating shaft 9 is slidably matched with the inner wall of the main body 1.

[0026] Start the motor 3, the motor 3 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the spray rack 6 to rotate synchronously. The rotation of the spray rack 6 drives the gear 7 and the reciprocating screw 8 to rotate synchronously. Since the gear 7 is meshed with the ring gear 5, the gear 7 will rotate itself when the spray rack 6 rotates, and the self-rotation of the gear 7 will drive the reciprocating screw 8 to rotate. The self-rotation of the reciprocating screw 8 will drive the moving plate 10 to make reciprocating linear motion along the direction of the axis of the reciprocating screw 8, and when the moving plate 10 makes reciprocating motion, the end of the moving plate 10 connected to the rotating shaft 9 will also slide on the rotating shaft 9. The stability of the moving plate 10 during reciprocating sliding is increased, and at the same time, it is convenient for the brush 11 to better clean the inner wall of the main body 1.

[0027] How it works

[0028] When it is necessary to clean the calcium sulfate remaining on the inner wall of the main body 1 , an external liquid supply device supplies the calcium sulfate cleaning solvent to the spray rack 6 through the liquid inlet pipe 4 and sprays it into the main body 1 through the nozzle.

[0029] Start the motor 3, the motor 3 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the spray rack 6 to rotate synchronously. The rotation of the spray rack 6 drives the gear 7 and the reciprocating screw 8 to rotate synchronously. Since the gear 7 is meshed with the ring gear 5, the gear 7 will rotate itself when the spray rack 6 rotates, and the self-rotation of the gear 7 will drive the reciprocating screw 8 to rotate. The self-rotation of the reciprocating screw 8 will drive the moving plate 10 to make reciprocating linear motion along the direction of the axis of the reciprocating screw 8, and when the moving plate 10 makes reciprocating motion, the end of the moving plate 10 connected to the rotating shaft 9 will slide on the rotating shaft 9 again. The stability of the moving plate 10 during reciprocating sliding is increased, and at the same time, it is convenient for the brush 11 to better clean the inner wall of the main body 1.

Claims

1. A boiler semi-dry desulfurization and dust removal equipment, characterized in that: The invention comprises a main body (1), wherein a ring gear (5) is fixedly arranged on the inner wall of the main body (1), a rotating shaft (9) is rotatably arranged in the main body (1), a spray rack (6) is fixedly arranged on the top of the rotating shaft (9), and a reciprocating screw rod (8) is rotatably arranged on the spray rack (6); a gear (7) is fixedly arranged on the top of the reciprocating screw rod (8), the gear (7) is meshed with the ring gear (5), and the bottom of the reciprocating screw rod (8) is movably connected to the bottom inner wall of the main body (1); the rotating shaft (9) A movable plate (10) is installed between the movable plate (10) and the reciprocating screw (8); one end of the movable plate (10) is movably connected to the rotating shaft (9); the other end of the movable plate (10) is threadedly connected to the reciprocating screw (8); and the movable plate (10), the reciprocating screw (8) and the ball bearing form a ball screw nut pair; a brush (11) is fixedly arranged at one end of the movable plate (10) away from the rotating shaft (9); and a side of the brush (11) away from the movable plate (10) is in contact with the inner wall of the main body (1).

2. The boiler semi-dry desulfurization and dust removal equipment according to claim 1 is characterized in that: The motor (3) is fixedly mounted on the top of the main body (1); the output shaft of the motor (3) passes through the top of the main body (1) and is fixedly connected to the top of the rotating shaft (9); the bottom of the rotating shaft (9) is rotatably connected to the bottom inner wall of the main body (1).

3. The boiler semi-dry desulfurization and dust removal equipment according to claim 1 is characterized in that: An annular groove is provided inside the spray rack (6), a rotating ring (12) is sealed on the notch of the annular groove, the rotating ring (12) is rotatably connected to the spray rack (6), a liquid inlet pipe (4) is fixedly provided on the top of the rotating ring (12), the top of the liquid inlet pipe (4) passes through the top of the main body (1) and extends to the outside of the main body (1), and a plurality of spray heads are provided at the bottom of the spray rack (6); a liquid outlet pipe (2) is provided at the bottom of the side wall of the main body (1).

4. The boiler semi-dry desulfurization and dust removal equipment according to claim 1 is characterized in that: The brush (11) is arranged in an arc shape.

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