Desulfurization device for alkali furnace

Abstract

The invention discloses a desulfurization device for an alkali furnace, and belongs to the technical field of alkali furnace desulfurization, the desulfurization device comprises a main body mechanism used for carrying out desulfurization treatment on alkali furnace waste gas, and the main body mechanism is provided with a closing mechanism used for stopping gas inlet during liquid discharge and a discharge mechanism used for discharging waste liquid and residues; the centrifugal spray head rotates to spray dilute white liquid, and the gas driving blade is combined to drive the centrifugal turntable to rotate, so that the dilute white liquid and waste gas are fully mixed, secondary desulfurization treatment is realized, the desulfurization effect is remarkably improved, and emission of harmful gas is reduced; the floating plate linkage mechanism is adopted, when the liquid level in the desulfurization box reaches the set height, the liquid inlet pipe is automatically closed, the gas inlet pipe is opened, and it is ensured that the desulfurization process is stably carried out; during liquid discharging, gas inlet is automatically cut off, waste gas leakage is avoided, and the system safety and operation convenience are improved; the scraping rod is matched with the hole hopper, reaction residues are cleaned in real time, timing residue discharging is achieved through a linkage mechanism of the stirring piece and the liquid discharging plate, and residues are prevented from being accumulated and blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alkali furnace desulfurization, in particular to a desulfurization device for alkali furnace. BACKGROUND

[0002] In the operation process of alkali furnace, a large amount of waste gas containing harmful substances such as sulfur dioxide will be generated, and direct emission will cause serious pollution to the environment. Therefore, it is necessary to carry out desulfurization treatment on the waste gas of alkali furnace to reduce the emission of harmful gas. At present, common desulfurization technologies include wet desulfurization, dry desulfurization and the like. Among them, wet desulfurization is widely used due to its high desulfurization efficiency. The traditional wet desulfurization device usually adopts a spray tower or a packed tower structure. The waste gas and the dilute white liquor (such as dilute white liquor) are contacted and reacted in the tower to achieve the desulfurization effect. However, the existing desulfurization device has the following problems. The traditional device only relies on single spraying or static contact mode, the mixing of waste gas and dilute white liquor is not sufficient enough, resulting in low desulfurization efficiency. The residues generated in the desulfurization process are easy to deposit at the bottom of the equipment. If not cleaned in time, it may block the pipeline or affect the recycling of dilute white liquor. The liquid inlet, gas inlet and residue discharge process of the traditional device are mostly dependent on manual operation or simple mechanical control, which is difficult to realize precise adjustment, affecting the stability of desulfurization. Some desulfurization devices need continuous power input to maintain spraying or stirring, increasing the operation cost. In view of the above problems, it is urgent to design a new desulfurization device for alkali furnace to improve the desulfurization efficiency, optimize the residue cleaning mechanism and realize automatic control, so as to reduce the energy consumption and improve the stability of the desulfurization process. SUMMARY

[0003] In view of the above technical problems, the technical scheme adopted by the present application is as follows: a desulfurization device for alkali furnace, comprising a main mechanism for desulfurization treatment of alkali furnace waste gas, the main mechanism comprising a desulfurization tank, a closing mechanism for stopping gas inlet when liquid is discharged and a discharge mechanism for discharging waste liquid and residues are arranged on the main mechanism. The main mechanism comprises an air inlet pipe and a liquid inlet pipe fixedly installed on the desulfurization tank, and an output gear is rotatably installed on the desulfurization tank. The closing mechanism comprises a liquid closing plate slidably installed in the liquid inlet pipe, and a liquid hole is arranged on the liquid closing plate.

[0004] Further, the main mechanism further comprises a motor, a motor gear is fixedly installed on the motor shaft of the motor, an output belt is wound outside the motor gear and the output gear, an air outlet pipe is fixedly installed on the desulfurization tank, and a cooling pipe is wound outside the air inlet pipe.

[0005] Furthermore, an upper pipe is rotatably installed inside the desulfurization box, and a top liquid inlet pipe is rotatably installed on the upper pipe. The upper pipe is connected to the top liquid inlet pipe, and the top liquid inlet pipe and the liquid inlet pipe are connected to an external pipeline for conveying dilute white liquid. An upper gear is fixedly installed on the upper pipe. When the motor is not started, the upper gear drives the output gear to rotate through gear transmission. When the motor is started, the output gear drives the upper gear to rotate through gear transmission. A central rotating shaft is fixedly installed on the upper pipe. The central rotating shaft is located inside the air inlet pipe. A perforated hopper is provided inside the desulfurization box. The perforated hopper has several holes. A scraper is fixedly installed below the central rotating shaft. The scraper slides along the upper surface of the perforated hopper.

[0006] Furthermore, blades and a centrifugal disc are fixedly mounted on the central rotating shaft, and multiple centrifugal nozzles are slidably mounted inside the centrifugal disc. The centrifugal nozzles are connected to the upper pipe, and a spring is provided between the centrifugal nozzles and the centrifugal disc.

[0007] The gas to be treated enters through the inlet pipe and is cooled by the cooling pipe to facilitate subsequent desulfurization. Diluted white liquid is introduced through the liquid inlet pipe. As the amount of diluted white liquid in the desulfurization tank increases, it will drive the float plate to rise to the highest point. At this time, the liquid shut-off plate closes the liquid inlet pipe and stops the liquid inlet. The gas is then desulfurized by the diluted white liquid in the desulfurization tank. When the gas enters the desulfurization tank through the inlet pipe, it will drive the central shaft, centrifugal disc, upper pipe and upper gear to rotate through the blades. When the centrifugal disc rotates, the centrifugal nozzle will slide outward through the centrifugal force. A small amount of diluted white liquid will be sprayed through the rotating centrifugal nozzle to supplement the desulfurized gas for secondary treatment and improve the desulfurization effect. At the same time, the rotation of the central shaft will drive the scraper to rotate. The scraper will push the reaction residue remaining on the orifice to the central plug. Meanwhile, the upper gear drives the output gear and the actuating plate to rotate through the gear transmission.

[0008] Furthermore, the shut-off mechanism also includes a float plate slidably installed inside the desulfurization tank, a rising rod fixedly installed on the float plate, a rotating rod rotatably installed on the rising rod, the rotating rod being rotatably installed with a liquid shut-off plate, a top rod fixedly installed on the desulfurization tank, a lifting rod slidably installed on the top rod, a gas shut-off plate fixedly installed on the lifting rod, and the gas shut-off plate being slidably installed with the air inlet pipe.

[0009] When liquid is introduced into the inlet pipe, the rise in the liquid level in the desulfurization tank will cause the float plate and the rising rod to rise. The rising rod drives the liquid shut-off plate to slide inside the inlet pipe through the rotating rod, so that the liquid shut-off hole leaves the inlet pipe and the inlet pipe is closed by the liquid shut-off plate. At the same time, the rising rod drives the lifting rod and the air shut-off plate to rise, so that the air shut-off plate no longer closes the air inlet pipe, and the gas to be treated enters from the air inlet pipe. That is, when the amount of dilute white liquid in the desulfurization tank reaches a certain level, the gas to be treated begins to enter, and the dilute white liquid no longer enters.

[0010] Furthermore, the discharge mechanism includes a discharge frame fixedly installed on the desulfurization box, a toggle plate fixedly installed on the output gear, a discharge plate slidably installed inside the discharge frame, an external push spring provided between the discharge plate and the discharge frame, an external push frame fixedly installed on the discharge plate, a groove rotating rod rotatably installed on the external push frame, a long groove provided on the groove rotating rod, a fixed column fixedly installed on the desulfurization box, the fixed column sliding in the long groove of the groove rotating rod, an upper rotating rod rotatably installed on the groove rotating rod, a blocking rod rotatably installed on the upper rotating rod, the blocking rod slidably installed with the desulfurization box, and the diameter of the blocking rod is smaller than the diameter of the liquid shut-off hole.

[0011] Furthermore, a central plug is slidably installed at the bottom of the desulfurization box, and a sliding ramp is fixedly installed on the central plug. The sliding ramp is slidably installed with the discharge frame, and a lower spring is provided between the sliding ramp and the discharge frame.

[0012] Furthermore, a sensor is fixedly installed on the desulfurization box, and a sensing plate is fixedly installed on the liquid discharge plate.

[0013] During desulfurization, the discharge plate seals the area below the orifice, and the central plug seals the bottom of the desulfurization tank. The upper gear drives the output gear and the actuating plate to rotate slowly through multi-stage gear transmission. When the actuating plate contacts the outer push frame, it pushes the outer push frame and the discharge plate to slide outward along the discharge frame. The outer push spring is compressed, and the outer push frame drives the tank rotating rod to rotate. The tank rotating rod drives the upper rotating rod to rotate, causing the blocking rod to insert into the liquid shut-off hole. After the discharge plate moves outward a certain distance, the liquid in the desulfurization tank begins to drain. As the liquid in the desulfurization tank decreases, the float plate drives the rising rod to descend, which in turn drives the liquid shut-off plate to slide through the rotating rod. Because the blocking rod is located in the liquid shut-off hole, and the diameter of the liquid shut-off hole is larger than the diameter of the blocking rod, the liquid shut-off plate can only move a small distance. The liquid shut-off plate still closes the inlet pipe. At this time, the lifting rod and the air shut-off plate descend, and the air shut-off plate closes the air inlet pipe, stopping the air intake. At this point, the sensing element reaches below the sensor. When the sensor can detect the sensing element, the motor starts and drives the output gear to rotate via the output belt. Since there is no gas pushing the blades at this time, the motor provides power. When the discharge plate moves to contact the sliding ramp, the sliding ramp and the center plug are driven to descend along the discharge frame by the slope surface of the sliding ramp. The lower spring is compressed, causing the residue on the center plug to fall out. When the actuating plate passes the outer push frame, the lower spring and the outer push spring rebound, causing the center plug, discharge plate and blocking rod to reset. After the blocking rod leaves the liquid shut-off hole, the float and rising rod descend, opening the liquid inlet pipe and starting liquid inlet. At this time, the sensor cannot detect the sensing element, the motor stops, and the slag discharge is completed. When the liquid level in the desulfurization tank rises, it drives the float and rising rod to rise. The air shut-off plate rises, opening the air inlet pipe and resuming the desulfurization operation.

[0014] The beneficial effects of this invention compared with the prior art are: (1) This invention sprays dilute white liquid by rotating centrifugal nozzles and drives centrifugal discs to rotate by gas-driven blades, so that dilute white liquid and waste gas are fully mixed, thereby achieving secondary desulfurization treatment, significantly improving the desulfurization effect and reducing harmful gas emissions; (2) This invention adopts a floating plate linkage mechanism. When the liquid level in the desulfurization tank reaches the set height, the liquid inlet pipe is automatically closed and the gas inlet pipe is opened to ensure the stable operation of the desulfurization process; the gas inlet is automatically cut off during liquid discharge to avoid waste gas leakage, thereby improving system safety and ease of operation; (3) This invention uses a scraper and a hole bucket to clean the reaction residue in real time, and uses the linkage mechanism of the actuating plate and the liquid discharge plate to achieve timed slag discharge, preventing residue accumulation and blockage, and ensuring long-term stable operation of the equipment; (4) This invention uses the kinetic energy of waste gas to drive the blades and centrifugal discs, reducing motor energy consumption; the motor is only started to assist operation during the slag discharge stage, reducing overall energy consumption and improving energy utilization efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the main structure of the present invention. Figure One .

[0017] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure Two .

[0018] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure Three .

[0019] Figure 5 This is a schematic diagram of the main structure of the present invention. Figure Four .

[0020] Figure 6 This is a schematic diagram of the closing mechanism of the present invention.

[0021] Figure 7 This is a schematic diagram of the discharge mechanism of the present invention. Figure One .

[0022] Figure 8 This is a schematic diagram of the discharge mechanism of the present invention. Figure Two .

[0023] Figure 9 This is a schematic diagram of the discharge mechanism of the present invention. Figure Three .

[0024] Reference numerals: 101-Desulfurization box; 102-Motor; 103-Motor gear; 104-Output belt; 105-Output gear; 106-Inlet pipe; 107-Outlet pipe; 108-Liquid inlet pipe; 109-Top liquid inlet pipe; 110-Upper gear; 111-Cooling pipe; 112-Central shaft; 113-Centrifugal disc; 114-Upper pipe; 115-Orifice hopper; 116-Scraper; 117-Centrifugal nozzle; 118-Blade; 201-Float plate; 202-Rising plate 203-Rotating rod; 204-Closing plate; 205-Closing hole; 206-Top rod; 207-Lifting rod; 208-Air shut-off plate; 301-Discharge frame; 302-Sliding ramp; 303-Lower spring; 304-Actuating piece; 305-Outer push frame; 306-Outer push spring; 307-Slot rotating rod; 308-Fixing column; 309-Upper rotating rod; 310-Blocking rod; 311-Center plug; 312-Sensor; 313-Discharge plate; 314-Sensing plate. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0026] Example: Reference Figures 1-9 A desulfurization device for an alkali furnace includes a main body for desulfurizing alkali furnace exhaust gas. The main body includes a desulfurization box 101. The main body is equipped with a shut-off mechanism for stopping the gas intake during liquid discharge and a discharge mechanism for discharging waste liquid and residue. The main structure includes an air inlet pipe 106 and a liquid inlet pipe 108 fixedly installed on the desulfurization box 101, and an output gear 105 is rotatably installed on the desulfurization box 101; The closing mechanism includes a liquid shut-off plate 204 that is slidably installed in the liquid inlet pipe 108, and a liquid shut-off hole 205 is provided on the liquid shut-off plate 204.

[0027] like Figures 2-5 As shown, the main structure also includes a motor 102, a motor gear 103 is fixedly mounted on the motor shaft of the motor 102, an output belt 104 is wound around the motor gear 103 and the output gear 105, an exhaust pipe 107 is fixedly mounted on the desulfurization box 101, and a cooling pipe 111 is wound around the exhaust pipe 106.

[0028] like Figures 2-5As shown, an upper pipe 114 is rotatably installed inside the desulfurization box 101, and a top liquid inlet pipe 109 is rotatably installed on the upper pipe 114. The upper pipe 114 is connected to the top liquid inlet pipe 109. The top liquid inlet pipe 109 and the liquid inlet pipe 108 are connected to the external pipeline for conveying dilute white liquid. An upper gear 110 is fixedly installed on the upper pipe 114. When the motor 102 is not started, the upper gear 110 drives the output gear 105 to rotate through gear transmission. When the motor 102 is started, the output gear 105 drives the upper gear 110 to rotate through gear transmission. A central rotating shaft 112 is fixedly installed on the upper pipe 114. The central rotating shaft 112 is located inside the air inlet pipe 106. A perforated bucket 115 is provided inside the desulfurization box 101. The perforated bucket 115 is provided with several holes. A scraper 116 is fixedly installed below the central rotating shaft 112. The scraper 116 slides along the upper surface of the perforated bucket 115.

[0029] like Figures 2-5 As shown, blades 118 and centrifugal disc 113 are fixedly installed on the central rotating shaft 112. Multiple centrifugal nozzles 117 are slidably installed inside the centrifugal disc 113. The centrifugal nozzles 117 are connected to the upper pipe 114. A spring is provided between the centrifugal nozzles 117 and the centrifugal disc 113.

[0030] The gas to be treated enters through the inlet pipe 106 and is cooled by the cooling pipe 111 to facilitate subsequent desulfurization. Diluted white liquid is introduced through the liquid inlet pipe 108. As the amount of diluted white liquid in the desulfurization tank 101 increases, it causes the float 201 to rise to its highest point. At this point, the liquid shut-off plate 204 closes the liquid inlet pipe 108, stopping the liquid intake. The gas is then desulfurized by the dilute white liquid in the desulfurization tank 101. When the gas enters the desulfurization tank 101 through the inlet pipe 106, it drives the central rotating shaft 112 and the centrifugal disc 113 via the blades 118. When the upper tube 114 and the upper gear 110 rotate, the centrifugal turntable 113 rotates, and the centrifugal nozzle 117 is driven to slide outward by the centrifugal force. A small amount of dilute white liquid is sprayed by the centrifugal nozzle 117 to supplement the desulfurized gas for secondary treatment and improve the desulfurization effect. At the same time, the rotation of the central shaft 112 will drive the scraper 116 to rotate. The scraper 116 will push the reaction residue remaining on the orifice hopper 115 to the central plug 311. Meanwhile, the upper gear 110 drives the output gear 105 and the actuating plate 304 to rotate through gear transmission.

[0031] like Figure 6 As shown, the closing mechanism also includes a float plate 201 slidably installed inside the desulfurization tank 101. A rising rod 202 is fixedly installed on the float plate 201. A rotating rod 203 is rotatably installed on the rising rod 202. The rotating rod 203 is rotatably installed with the liquid shut-off plate 204. A top rod 206 is fixedly installed on the desulfurization tank 101. A lifting rod 207 is slidably installed on the top rod 206. A gas shut-off plate 208 is fixedly installed on the lifting rod 207. The gas shut-off plate 208 is slidably installed with the air inlet pipe 106.

[0032] When liquid enters through the inlet pipe 108, the rising liquid level in the desulfurization tank 101 will cause the float plate 201 and the rising rod 202 to rise. The rising rod 202 drives the liquid shut-off plate 204 to slide inside the inlet pipe 108 through the rotating rod 203, so that the liquid shut-off hole 205 leaves the inlet pipe 108 and the inlet pipe 108 is closed by the liquid shut-off plate 204. At the same time, the rising rod 202 drives the lifting rod 207 and the air shut-off plate 208 to rise, so that the air shut-off plate 208 no longer closes the air inlet pipe 106, and the gas to be treated enters from the air inlet pipe 106. That is, when the amount of dilute white liquid in the desulfurization tank 101 reaches a certain level, the gas to be treated begins to enter, and the dilute white liquid no longer enters.

[0033] like Figures 7-9 As shown, the discharge mechanism includes a discharge frame 301 fixedly installed on the desulfurization box 101, a toggle plate 304 fixedly installed on the output gear 105, a discharge plate 313 slidably installed inside the discharge frame 301, an external push spring 306 between the discharge plate 313 and the discharge frame 301, an external push frame 305 fixedly installed on the discharge plate 313, a groove rotating rod 307 rotatably installed on the external push frame 305, a long groove provided on the groove rotating rod 307, a fixing column 308 fixedly installed on the desulfurization box 101, the fixing column 308 sliding in the long groove of the groove rotating rod 307, an upper rotating rod 309 rotatably installed on the groove rotating rod 307, a blocking rod 310 rotatably installed on the upper rotating rod 309, the blocking rod 310 slidably installed with the desulfurization box 101, and the diameter of the blocking rod 310 is smaller than the diameter of the liquid shut-off hole 205.

[0034] like Figures 7-9 As shown, a central plug 311 is slidably installed at the bottom of the desulfurization box 101, and a sliding ramp 302 is fixedly installed on the central plug 311. The sliding ramp 302 is slidably installed with the discharge frame 301, and a lower spring 303 is provided between the sliding ramp 302 and the discharge frame 301.

[0035] like Figures 7-9 As shown, a sensor 312 is fixedly installed on the desulfurization box 101, and a sensing plate 314 is fixedly installed on the liquid discharge plate 313.

[0036] During desulfurization, the discharge plate 313 seals the area below the orifice 115, and the central plug 311 seals the bottom of the desulfurization box 101. The upper gear 110 drives the output gear 105 and the actuating plate 304 to rotate slowly through multi-stage gear transmission. When the actuating plate 304 contacts the outer push frame 305, it pushes the outer push frame 305 and the discharge plate 313 to slide outward along the discharge frame 301, compressing the outer push spring 306. The outer push frame 305 drives the tank rotating rod 307 to rotate, and the tank rotating rod 307 drives the upper rotating rod 309 to rotate, causing the blocking rod 310 to insert into the liquid shut-off hole 205. When the liquid is discharged... After plate 313 moves outward a certain distance, the liquid in desulfurization tank 101 begins to drain. As the liquid in desulfurization tank 101 decreases, float plate 201 drives rising rod 202 to descend, which in turn drives liquid shut-off plate 204 to slide via rotating rod 203. Since blocking rod 310 is located in liquid shut-off hole 205, and the diameter of liquid shut-off hole 205 is larger than the diameter of blocking rod 310, liquid shut-off plate 204 can only move a small distance. Liquid shut-off plate 204 still closes liquid inlet pipe 108. At this time, lifting rod 207 and air shut-off plate 208 descend, and air shut-off plate 208 closes air inlet pipe 106, stopping air intake. At this time, when the sensing plate 314 reaches below the sensor 312 and the sensor 312 can sense the sensing plate 314, the motor 102 starts and drives the output gear 105 to rotate through the output belt 104. Since there is no gas pushing the blade 118 at this time, the motor 102 provides power. When the discharge plate 313 moves to contact the sliding ramp 302, the slope surface of the sliding ramp 302 drives the sliding ramp 302 and the center plug 311 to descend along the discharge frame 301. The lower spring 303 is compressed, causing the residue on the center plug 311 to fall out. When the actuating plate 304 passes through... After the outer push frame 305 is pushed out, the lower spring 303 and the outer push spring 306 rebound, causing the center plug 311, the liquid discharge plate 313 and the blocking rod 310 to reset. After the blocking rod 310 leaves the liquid shut-off hole 205, the float 201 and the rising rod 202 descend, causing the liquid inlet pipe 108 to open and start liquid inlet. At this time, the sensor 312 cannot detect the sensing plate 314, the motor 102 stops, and the slag discharge is completed. When the liquid level in the desulfurization tank 101 rises, it drives the float 201 and the rising rod 202 to rise. The air shut-off plate 208 rises, causing the air inlet pipe 106 to open and the desulfurization operation to resume.

[0037] The working principle of the desulfurization device for an alkali furnace disclosed in this invention is as follows: When liquid is introduced into the inlet pipe 108, the rise in the liquid level in the desulfurization tank 101 will drive the float plate 201 and the rising rod 202 to rise. The rising rod 202 drives the liquid shut-off plate 204 to slide in the inlet pipe 108 through the rotating rod 203, so that the liquid shut-off hole 205 leaves the inlet pipe 108 and the inlet pipe 108 is closed by the liquid shut-off plate 204. At the same time, the rising rod 202 drives the lifting rod 207 and the gas shut-off plate 208 to rise, so that the gas shut-off plate 208 no longer closes the gas inlet pipe 106, and the gas to be treated enters from the gas inlet pipe 106. That is, when the amount of dilute white liquid in the desulfurization tank 101 reaches a certain level, the gas to be treated begins to enter, and the dilute white liquid no longer enters. The gas to be treated enters through the inlet pipe 106 and is cooled by the cooling pipe 111 to facilitate subsequent desulfurization. Diluted white liquid is introduced through the liquid inlet pipe 108. As the amount of diluted white liquid in the desulfurization tank 101 increases, it causes the float 201 to rise to its highest point. At this point, the liquid shut-off plate 204 closes the liquid inlet pipe 108, stopping the liquid intake. The gas is then desulfurized by the dilute white liquid in the desulfurization tank 101. When the gas enters the desulfurization tank 101 through the inlet pipe 106, it drives the central rotating shaft 112 and the centrifugal disc 113 via the blades 118. When the upper tube 114 and the upper gear 110 rotate, the centrifugal turntable 113 rotates, and the centrifugal nozzle 117 is driven to slide outward by the centrifugal force. A small amount of dilute white liquid is sprayed by the centrifugal nozzle 117 to supplement the desulfurized gas for secondary treatment and improve the desulfurization effect. At the same time, the rotation of the central shaft 112 will drive the scraper 116 to rotate. The scraper 116 will push the reaction residue remaining on the orifice hopper 115 to the central plug 311. Meanwhile, the upper gear 110 drives the output gear 105 and the actuating plate 304 to rotate through gear transmission.During desulfurization, the discharge plate 313 seals the area below the orifice 115, and the central plug 311 seals the bottom of the desulfurization box 101. The upper gear 110 drives the output gear 105 and the actuating plate 304 to rotate slowly through multi-stage gear transmission. When the actuating plate 304 contacts the outer push frame 305, it pushes the outer push frame 305 and the discharge plate 313 to slide outward along the discharge frame 301, compressing the outer push spring 306. The outer push frame 305 drives the tank rotating rod 307 to rotate, and the tank rotating rod 307 drives the upper rotating rod 309 to rotate, causing the blocking rod 310 to insert into the liquid shut-off hole 205. When the liquid is discharged... After plate 313 moves outward a certain distance, the liquid in desulfurization tank 101 begins to drain. As the liquid in desulfurization tank 101 decreases, float plate 201 drives rising rod 202 to descend, which in turn drives liquid shut-off plate 204 to slide via rotating rod 203. Since blocking rod 310 is located in liquid shut-off hole 205, and the diameter of liquid shut-off hole 205 is larger than the diameter of blocking rod 310, liquid shut-off plate 204 can only move a small distance. Liquid shut-off plate 204 still closes liquid inlet pipe 108. At this time, lifting rod 207 and air shut-off plate 208 descend, and air shut-off plate 208 closes air inlet pipe 106, stopping air intake. At this time, when the sensing plate 314 reaches below the sensor 312 and the sensor 312 can sense the sensing plate 314, the motor 102 starts and drives the output gear 105 to rotate through the output belt 104. Since there is no gas pushing the blade 118 at this time, the motor 102 provides power. When the discharge plate 313 moves to contact the sliding ramp 302, the slope surface of the sliding ramp 302 drives the sliding ramp 302 and the center plug 311 to descend along the discharge frame 301. The lower spring 303 is compressed, causing the residue on the center plug 311 to fall out. When the actuating plate 304 passes through... After the outer push frame 305 is pushed out, the lower spring 303 and the outer push spring 306 rebound, causing the center plug 311, the liquid discharge plate 313 and the blocking rod 310 to reset. After the blocking rod 310 leaves the liquid shut-off hole 205, the float 201 and the rising rod 202 descend, causing the liquid inlet pipe 108 to open and start liquid inlet. At this time, the sensor 312 cannot detect the sensing plate 314, the motor 102 stops, and the slag discharge is completed. When the liquid level in the desulfurization tank 101 rises, it drives the float 201 and the rising rod 202 to rise. The air shut-off plate 208 rises, causing the air inlet pipe 106 to open and the desulfurization operation to resume.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A desulfurization device for an alkali furnace, comprising a main body for desulfurizing alkali furnace exhaust gas, characterized in that: The main structure includes a desulfurization box (101), which is equipped with a shut-off mechanism for stopping air intake during liquid discharge and a discharge mechanism for discharging waste liquid and residue. The main structure includes an air inlet pipe (106) and a liquid inlet pipe (108) fixedly installed on the desulfurization box (101), and an output gear (105) is rotatably installed on the desulfurization box (101). The closing mechanism includes a liquid shut-off plate (204) that is slidably installed in the liquid inlet pipe (108), and a liquid shut-off hole (205) is provided on the liquid shut-off plate (204).

2. The desulfurization device for an alkali furnace according to claim 1, characterized in that: The main structure also includes a motor (102), a motor gear (103) is fixedly installed on the motor shaft of the motor (102), an output belt (104) is wrapped around the motor gear (103) and the output gear (105), an exhaust pipe (107) is fixedly installed on the desulfurization box (101), and a cooling pipe (111) is wrapped around the intake pipe (106).

3. The desulfurization device for an alkali furnace according to claim 2, characterized in that: An upper pipe (114) is rotatably installed inside the desulfurization box (101). A top inlet pipe (109) is rotatably installed on the upper pipe (114). The upper pipe (114) is connected to the top inlet pipe (109). The top inlet pipe (109) and the inlet pipe (108) are connected to an external pipeline for conveying dilute white liquid. An upper gear (110) is fixedly installed on the upper pipe (114). When the motor (102) is not started, the upper gear (110) drives the output gear (105) to rotate through gear transmission. When the motor (102) is not started, the output gear (105) rotates. When the machine (102) is started, the output gear (105) drives the upper gear (110) to rotate through the gear transmission. A central rotating shaft (112) is fixedly installed on the upper pipe (114). The central rotating shaft (112) is located inside the air inlet pipe (106). A perforated bucket (115) is provided inside the desulfurization box (101). Several holes are provided on the perforated bucket (115). A scraper (116) is fixedly installed below the central rotating shaft (112). The scraper (116) slides along the upper surface of the perforated bucket (115).

4. The desulfurization device for an alkali furnace according to claim 3, characterized in that: The central rotating shaft (112) is fixedly mounted with blades (118) and centrifugal turntable (113). Multiple centrifugal nozzles (117) are slidably mounted inside the centrifugal turntable (113). The centrifugal nozzles (117) are connected to the upper pipe (114). A spring is provided between the centrifugal nozzles (117) and the centrifugal turntable (113).

5. A desulfurization device for an alkali furnace according to claim 1, characterized in that: The closing mechanism also includes a float plate (201) slidably installed in the desulfurization tank (101), a rising rod (202) fixedly installed on the float plate (201), a rotating rod (203) rotatably installed on the rising rod (202), the rotating rod (203) rotatably installed with the liquid shut-off plate (204), a top rod (206) fixedly installed on the desulfurization tank (101), a lifting rod (207) slidably installed on the top rod (206), a gas shut-off plate (208) fixedly installed on the lifting rod (207), and the gas shut-off plate (208) slidably installed with the air inlet pipe (106).

6. The desulfurization device for an alkali furnace according to claim 1, characterized in that: The discharge mechanism includes a discharge rack (301) fixedly installed on the desulfurization box (101), a toggle plate (304) fixedly installed on the output gear (105), a discharge plate (313) slidably installed inside the discharge rack (301), an external push spring (306) provided between the discharge plate (313) and the discharge rack (301), an external push frame (305) fixedly installed on the discharge plate (313), and a groove rotating rod (307) rotatably installed on the external push frame (305). A long groove is provided on the rotating rod (307), and a fixed column (308) is fixedly installed on the desulfurization box (101). The fixed column (308) slides in the long groove of the rotating rod (307). An upper rotating rod (309) is rotatably installed on the rotating rod (307), and a blocking rod (310) is rotatably installed on the upper rotating rod (309). The blocking rod (310) is slidably installed with the desulfurization box (101), and the diameter of the blocking rod (310) is smaller than the diameter of the liquid shut-off hole (205).

7. A desulfurization device for an alkali furnace according to claim 6, characterized in that: The desulfurization box (101) is slidably installed with a center plug (311) at the bottom. A sliding ramp (302) is fixedly installed on the center plug (311). The sliding ramp (302) is slidably installed with the discharge frame (301). A lower spring (303) is provided between the sliding ramp (302) and the discharge frame (301).

8. A desulfurization device for an alkali furnace according to claim 7, characterized in that: A sensor (312) is fixedly installed on the desulfurization box (101), and a sensor plate (314) is fixedly installed on the liquid discharge plate (313).

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