Semi-dry desulfurization nozzle mechanism

Abstract

The utility model relates to a semi-dry desulphurization nozzle mechanism, including intake pipe and exhaust pipe, intake pipe is fixedly communicated with the left side of tower body inner wall and is used for flue gas input, the exhaust pipe is fixedly communicated with tower body upper end face and is used for flue gas output, the inside of tower body is provided with the spraying mechanism for flue gas desulphurization, and the spraying mechanism is used for spraying flue gas desulphurization. A cleaning assembly used for cleaning the spraying mechanism is arranged in the tower body, and the spraying mechanism comprises a motor. According to the semi-dry desulfurization nozzle mechanism, the worm gear and the worm are driven to rotate by the motor, namely the worm drives the worm gear and the drain pipe to rotate when the worm rotates, and at the moment, the three water spraying strips on the outer side of the drain pipe rotate along with the worm gear, so that an absorbent pumped by the water pump can be sprayed into the tower body through the atomizing nozzle and is in effective contact with flue gas in the tower body; the problem that the sprayed absorbent solution cannot effectively and completely cover the tower body due to the fact that the position of the atomizing nozzle is kept unchanged is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to a semi-dry desulfurization nozzle mechanism. Background Art

[0002] Desulfurization refers to fixing the sulfur element in coal into a solid by calcium-based methods to prevent the formation of SO2 during combustion. At present, there are generally three types of desulfurization methods. According to the dry and wet states of the absorbent and the desulfurization product during the desulfurization process, the desulfurization technology can be divided into wet method, dry method and semi-dry (semi-wet) method.

[0003] Chinese Patent Publication No.: (CN215233270U) A semi-dry desulfurization device comprises a tower body, wherein a cleaning assembly is arranged in the tower body, wherein the cleaning assembly comprises a screening hood, wherein the screening hood is arranged in an inverted quadrangular pyramid shape, wherein the screening hood is connected to the inner wall of the tower body, wherein a desulfurization chamber is arranged above the screening hood, wherein a recovery chamber is arranged below the screening hood, wherein a sewage pipe is connected to the bottom of the screening hood, wherein the sewage pipe runs through the bottom of the tower body, and wherein a control valve is connected to the sewage pipe, wherein an exhaust pipe is arranged in the desulfurization chamber, wherein an air inlet pipe is connected to one side of the exhaust pipe, wherein the flue gas is transported by a plurality of air inlet pipes to the exhaust pipe arranged in a roundabout shape, and then discharged from the air outlet hole, wherein the flue gas can be uniformly filled in the desulfurization chamber, and wherein the absorbent solution injected by the absorbent solution inlet pipe is atomized by the atomizing nozzle, so that the solution can be fully mixed with the sulfide in the flue gas, thereby facilitating the desulfurization operation of the flue gas and improving the practical effect.

[0004] The applicant has found through searching that the above patent still has certain defects. For example, the above patent atomizes the absorbent solution through a spray pipe and an atomizing nozzle and discharges it, and then mixes it with the sulfide in the flue gas inside the tower body to achieve the desulfurization effect. Since the position of the atomizing nozzle in the above patent remains unchanged, it is easy for the sprayed absorbent solution to fail to effectively cover the tower body completely during the spraying process, and thus fail to effectively contact the flue gas inside the tower body. In addition, impurities in the flue gas can easily block the atomizing nozzle and affect the normal water output of the atomizing nozzle. Therefore, a semi-dry desulfurization nozzle mechanism is proposed to solve the above technical problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a semi-dry desulfurization nozzle mechanism, which has the advantages of uniform coverage, etc., and solves the problem that the position of the atomizing nozzle remains unchanged and the sprayed absorbent solution cannot effectively cover the tower body completely.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-dry desulfurization nozzle mechanism, comprising an air inlet pipe and an exhaust pipe, wherein the air inlet pipe is fixedly connected to the left side of the inner wall of the tower body and is used for the input of flue gas, and the exhaust pipe is fixedly connected to the upper end surface of the tower body and is used for the output of flue gas, a spraying mechanism for flue gas desulfurization is arranged inside the tower body, and a cleaning component for cleaning the spraying mechanism is arranged inside the tower body;

[0007] Among them, the spraying mechanism includes a motor, which is fixed to the upper end face of the tower body by bolts, and bearing seats are fixed on the front and rear sides of the upper end face of the tower body. A worm gear with one end fixedly connected to the output end of the motor is rotatably connected between the opposite sides of the two bearing seats. A drain pipe is rotatably connected to the center of the top wall of the tower body through a bearing, and a worm wheel meshing with the worm gear is fixed on the outside of the drain pipe. Three water spray strips are fixedly connected to the outside of the drain pipe, and a number of atomizing nozzles are fixedly connected to the lower end face of the water spray strip.

[0008] Furthermore, a water pump is fixed on the left side of the upper end surface of the tower body, the input end of the water pump is fixedly connected to the absorbent storage tank in the outside world, and the output end of the water pump is fixedly connected to an outlet pipe with one end extending to the inside of the drain pipe, and the drain pipe is rotatably connected to the outlet pipe through a sealed bearing.

[0009] Furthermore, a rotating through hole for rotating the output end of the power supply machine is opened inside the bearing seat at the rear side, and the three water spray bars are distributed in a circular array on the outside of the drain pipe.

[0010] Furthermore, the cleaning assembly includes a mounting plate, which is welded to the left side of the inner wall of the tower body, and support rods with one end fixedly connected to the inner wall of the tower body are fixed on both the front and rear sides of the mounting plate, and a plurality of rotating rods are rotatably connected to the interior of the mounting plate through bearings, and a brush is fixed to the upper end surface of the rotating rod, one side of which is attached to the lower end surface of the atomizing nozzle, and a driven gear is fixed to the outer side of the rotating rod and below the mounting plate, and a shaft is fixed to the lower end surface of the drain pipe, and a driving gear is fixed to the outer side of the shaft.

[0011] Furthermore, two adjacent driven gears are meshed with each other, and the driving gear is meshed with the driven gear on the right side.

[0012] Furthermore, a plurality of the brushes are distributed at equal intervals, and the outer diameter of the driving gear is greater than the outer diameter of the driven gear.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The semi-dry desulfurization nozzle mechanism drives the worm wheel and the worm to rotate through a motor, that is, the worm wheel and the drain pipe are driven to rotate when the worm rotates. At this time, the three water spray strips on the outside of the drain pipe rotate accordingly, and the absorbent extracted by the water pump can be sprayed into the interior of the tower body through the atomizing nozzle, and effectively contact with the flue gas inside the tower body, which effectively solves the problem that the position of the atomizing nozzle remains unchanged and the sprayed absorbent solution cannot effectively cover the tower body completely.

[0015] 2. The semi-dry desulfurization nozzle mechanism drives the driving gear and several driven gears to rotate when the drain pipe rotates, and then drives the brush to rotate. When the atomizing nozzle rotates to the top of the mounting plate and contacts the brush, the brush rotates rapidly to clean the lower end surface of the atomizing nozzle, effectively avoiding clogging of the atomizing nozzle, and effectively solving the problem that impurities in the flue gas easily block the atomizing nozzle and affect the normal water output of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the tower body of the utility model;

[0018] Figure 3 This is a schematic diagram of the spraying mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the spraying mechanism of the utility model when viewed from above;

[0020] Figure 5 This is a schematic diagram of the cleaning component of the utility model;

[0021] Figure 6 For this utility model Figure 5 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 7 This is a schematic diagram of the connection structure between the brush and the mounting plate of the utility model.

[0023] In the figure: 1. tower body; 2. air inlet pipe; 3. exhaust pipe; 4. spraying mechanism; 401. motor; 402. bearing seat; 403. worm; 404. drain pipe; 405. worm gear; 406. water spray bar; 407. atomizing nozzle; 5. cleaning assembly; 501. mounting plate; 502. support rod; 503. rotating rod; 504. brush; 505. driven gear; 506. shaft rod; 507. driving gear. DETAILED DESCRIPTION

[0024] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-2 A semi-dry desulfurization nozzle mechanism in this embodiment includes an air inlet pipe 2 and an exhaust pipe 3. The air inlet pipe 2 is fixedly connected to the left side of the inner wall of the tower body 1 and is used for the input of flue gas. When the flue gas needs to be desulfurized, the flue gas is first transported to the inside of the tower body 1 through the air inlet pipe 2. The lower end face of the tower body 1 is fixedly connected with a drain pipe and is controlled by a valve. The exhaust pipe 3 is fixedly connected to the upper end face of the tower body 1 and is used for the output of the flue gas. The exhaust pipe 3 is connected to the chimney in the outside world, and the flue gas after desulfurization is discharged into the chimney. A spraying mechanism 4 for flue gas desulfurization is provided inside the tower body 1, and a cleaning component 5 for cleaning the spraying mechanism 4 is provided inside the tower body 1.

[0026] See also Figure 3-4 In order to achieve the effect of rotary spraying, the spraying mechanism 4 in this embodiment includes a motor 401, which is fixed to the upper end surface of the tower body 1 by bolts. Bearing seats 402 are fixed on both the front and rear sides of the upper end surface of the tower body 1. A worm 403 having one end fixedly connected to the output end of the motor 401 is rotatably connected between the two opposite sides of the bearing seats 402. When the electric control switch of the motor 401 is turned on, the output end of the motor 401 rotates to drive the worm 403 connected thereto to rotate. A drain pipe 404 is rotatably connected to the center of the inner top wall of the tower body 1 through a bearing. The outer side of the drain pipe 404 A worm wheel 405 meshing with the worm 403 is fixedly provided, and three water spray strips 406 are fixedly connected to the outside of the drain pipe 404. The meshing effect means that when the worm 403 rotates, the worm wheel 405 and the drain pipe 404 are driven to rotate. At this time, the three water spray strips 406 on the outside of the drain pipe 404 rotate accordingly. The lower end surface of the water spray strip 406 is fixedly connected to a plurality of atomizing nozzles 407. The absorbent transported to the inside of the drain pipe 404 is transported to the inside of the three water spray strips 406 through the drain pipe 404, and finally sprayed out through the atomizing nozzles 407 below the water spray strip 406 to contact the flue gas.

[0027] A water pump is fixed on the left side of the upper end surface of the tower body 1. The input end of the water pump is fixedly connected to the absorbent storage tank in the outside world, and the output end of the water pump is fixedly connected to a water outlet pipe with one end extending to the inside of the drain pipe 404. When the control switch of the water pump is turned on, the water pump extracts the absorbent inside the external absorbent storage tank and transports it to the inside of the drain pipe 404. The drain pipe 404 is rotatably connected to the water outlet pipe through a sealed bearing. When the drain pipe 404 rotates, the drain pipe 404 rotates on the outside of the water outlet pipe through the action of the sealed bearing. The drain pipe 404 and the water outlet pipe are preferably made of stainless steel pipes. A rotating through hole for rotating the output end of the power supply machine 401 is provided inside the rear bearing seat 402, and three water spray strips 406 are distributed in a circular array on the outside of the drain pipe 404.

[0028] The spraying mechanism 4 in this embodiment drives the worm wheel 405 and the worm 403 to rotate through the motor 401, that is, when the worm 403 rotates, it drives the worm wheel 405 and the drain pipe 404 to rotate. At this time, the three water spray strips 406 on the outside of the drain pipe 404 rotate accordingly, and the absorbent extracted by the water pump can be sprayed into the interior of the tower body 1 through the atomizing nozzle 407, and effectively contact with the flue gas inside the tower body 1.

[0029] See also Figure 5-7 In order to avoid clogging of the atomizing nozzle 407, the cleaning assembly 5 in this embodiment includes a mounting plate 501, which is welded to the left side of the inner wall of the tower body 1. A support rod 502 is fixed at one end to the inner wall of the tower body 1 on both the front and rear sides of the mounting plate 501. A plurality of rotating rods 503 are rotatably connected to the interior of the mounting plate 501 through bearings. A brush 504 is fixed on the upper end surface of the rotating rod 503, one side of which is attached to the lower end surface of the atomizing nozzle 407. When the atomizing nozzle 407 rotates to the top of the mounting plate 501 and contacts the brush 504, the brush 504 rotates rapidly to clean the atomizing nozzle 407. 07 is cleaned, and a driven gear 505 is fixed on the outer side of the rotating rod 503 and below the mounting plate 501. The driving gear 507 rotates through the meshing effect, driving the driven gear 505 on the right to rotate. Since the two adjacent driven gears 505 are meshed with each other, that is, when the last driven gear 505 rotates, the other driven gears 505 also rotate accordingly. A shaft rod 506 is fixed on the lower end surface of the drain pipe 404, and a driving gear 507 is fixed on the outer side of the shaft rod 506. When the drain pipe 404 rotates, the shaft rod 506 and the driving gear 507 on its lower end surface are also driven to rotate.

[0030] Two adjacent driven gears 505 are meshed with each other, and the driven gear 505 drives the rotating rod 503 inside thereof to rotate, thereby driving the brush 504 to rotate. The driving gear 507 is meshed with the driven gear 505 on the right side, and a plurality of brushes 504 are equidistantly distributed. The outer diameter of the driving gear 507 is greater than the outer diameter of the driven gear 505. Since the outer diameter of the driving gear 507 is greater than that of the driven gear 505, that is, when the rotation speed of the brush 504 is greater than the rotation speed of the water spray bar 406, the atomizing nozzle 407 is effectively cleaned.

[0031] The cleaning component 5 in this embodiment drives the driving gear 507 and a plurality of driven gears 505 to rotate when the drain pipe 404 rotates, thereby driving the brush 504 to rotate. When the atomizing nozzle 407 rotates to the top of the mounting plate 501 and contacts the brush 504, the brush 504 rotates rapidly to clean the lower end surface of the atomizing nozzle 407, thereby effectively preventing the atomizing nozzle 407 from being blocked.

[0032] The working principle of the above embodiment is:

[0033] (1) When flue gas desulfurization is required, the flue gas is first transported to the inside of the tower body 1 through the air inlet pipe 2, and the control switch of the water pump is turned on. The water pump extracts the absorbent inside the external absorbent storage box and transports it to the inside of the drain pipe 404, and then transports it to the inside of the three water spray strips 406 through the drain pipe 404, and finally sprays it out through the atomizing nozzle 407 under the water spray strip 406 to contact the flue gas. The electric control switch of the motor 401 is turned on, and the output end of the motor 401 rotates to drive the worm 403 connected to it to rotate. Through the meshing effect, the rotation of the worm 403 drives the worm wheel 405 and the drain pipe 404 to rotate. At this time, the three water spray strips 406 outside the drain pipe 404 rotate accordingly, so that the atomizing nozzle 407 sprays the absorbent evenly to the inside of the tower body 1 and effectively contacts the flue gas inside the tower body 1.

[0034] (2) When the drain pipe 404 rotates, it also drives the shaft rod 506 and the driving gear 507 on its lower end surface to rotate. Through the meshing effect, the driving gear 507 rotates, driving the driven gear 505 on the right side to rotate. Since the two adjacent driven gears 505 are meshed with each other, that is, when the last driven gear 505 rotates, the other driven gears 505 also rotate accordingly. The driven gear 505 drives the rotating rod 503 inside to rotate, thereby driving the brush 504 to rotate. When the atomizing nozzle 407 rotates to the top of the mounting plate 501 and contacts the brush 504, the brush 504 rotates rapidly to clean the lower end surface of the atomizing nozzle 407, effectively avoiding clogging of the atomizing nozzle 407. Since the outer diameter of the driving gear 507 is larger than that of the driven gear 505, that is, when the rotation speed of the brush 504 is greater than the rotation speed of the water spray bar 406, the atomizing nozzle 407 is effectively cleaned.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-dry desulfurization nozzle mechanism, comprising an air inlet pipe (2) and an exhaust pipe (3), characterized in that: The air inlet pipe (2) is fixedly connected to the left side of the inner wall of the tower body (1) and is used for the input of flue gas; the exhaust pipe (3) is fixedly connected to the upper end surface of the tower body (1) and is used for the output of flue gas; a spraying mechanism (4) for flue gas desulfurization is provided inside the tower body (1); and a cleaning component (5) for cleaning the spraying mechanism (4) is provided inside the tower body (1); The spraying mechanism (4) comprises a motor (401), the motor (401) being fixed to the upper end face of the tower body (1) by means of bolts, bearing seats (402) being fixed to both the front and rear sides of the upper end face of the tower body (1), a worm (403) having one end fixedly connected to the output end of the motor (401) being rotatably connected between the two opposite sides of the bearing seats (402), a drainage pipe (404) being rotatably connected to the center of the inner top wall of the tower body (1) by means of a bearing, a worm wheel (405) meshing with the worm (403) being fixed to the outer side of the drainage pipe (404), three water spray strips (406) being fixedly connected to the outer side of the drainage pipe (404), and a plurality of atomizing nozzles (407) being fixedly connected to the lower end face of the water spray strip (406).

2. A semi-dry desulfurization nozzle mechanism according to claim 1, characterized in that: A water pump is fixed on the left side of the upper end surface of the tower body (1); the input end of the water pump is fixedly connected to an absorbent storage tank in the outside world; the output end of the water pump is fixedly connected to a water outlet pipe having one end extending to the inside of a drain pipe (404); the drain pipe (404) is rotatably connected to the water outlet pipe via a sealed bearing.

3. A semi-dry desulfurization nozzle mechanism according to claim 1, characterized in that: A rotating through hole for rotating the output end of the power supply machine (401) is provided inside the rear side bearing seat (402), and the three water spray bars (406) are distributed in a circular array on the outside of the drainage pipe (404).

4. A semi-dry desulfurization nozzle mechanism according to claim 1, characterized in that: The cleaning assembly (5) comprises a mounting plate (501), the mounting plate (501) being welded to the left side of the inner wall of the tower body (1), a support rod (502) having one end fixedly connected to the inner wall of the tower body (1) being fixed on both the front and rear sides of the mounting plate (501), a plurality of rotating rods (503) being rotatably connected to the interior of the mounting plate (501) via bearings, a brush (504) having one side attached to the lower end surface of the atomizing nozzle (407) being fixed to the upper end surface of the rotating rod (503), a driven gear (505) being fixed to the outer side of the rotating rod (503) and located below the mounting plate (501), a shaft rod (506) being fixed to the lower end surface of the drain pipe (404), and a driving gear (507) being fixed to the outer side of the shaft rod (506).

5. A semi-dry desulfurization nozzle mechanism according to claim 4, characterized in that: Two adjacent driven gears (505) mesh with each other, and the driving gear (507) meshes with the driven gear (505) on the right side.

6. A semi-dry desulfurization nozzle mechanism according to claim 4, characterized in that: The plurality of brushes (504) are distributed at equal intervals, and the outer diameter of the driving gear (507) is greater than the outer diameter of the driven gear (505).

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