Desulfurization equipment for waste gas of pulverized coal fired boiler

Abstract

The invention relates to the technical field of boiler waste gas desulfurization, in particular to pulverized coal boiler waste gas desulfurization equipment which comprises a shell, a lime seat is fixedly connected to the shell, a material receiving plate is rotatably connected in the shell, a mounting seat is fixedly connected to the material receiving plate, and a plurality of desulfurization pipes are fixedly connected to the mounting seat. A plurality of desulfurization pipes are arranged in the shell, stirring mechanisms are rotatably connected in the desulfurization pipes, sealing plugs are movably inserted into the bottom ends of the desulfurization pipes, a driving mechanism is fixedly connected to the inner wall of the bottom end of the shell, and a transmission ring is arranged on the inner wall of the bottom end of the shell. The pulverized coal boiler waste gas desulfurization device can significantly improve the efficiency of pulverized coal boiler waste gas desulfurization, can ensure sufficient reaction time of waste gas and lime, can ensure uniform distribution of lime, avoids accumulation or non-uniform use of lime powder, can optimize the overall desulfurization effect, improves the equipment stability, reduces the cost, and achieves a better desulfurization effect.

Description

Technical Field

[0001] The invention relates to the technical field of boiler exhaust gas desulfurization, in particular to a desulfurization device for exhaust gas from a pulverized coal boiler. Background Art

[0002] Pulverized coal boiler exhaust gas refers to the exhaust gas generated by pulverized coal boilers when burning pulverized coal. Pulverized coal boilers are widely used in energy production fields such as power plants and industrial boilers to convert the heat energy generated by the combustion of pulverized coal into steam or hot water for use. However, a large amount of exhaust gas is released during the combustion process of pulverized coal boilers, which contains harmful substances and needs to be treated before discharge to meet environmental protection requirements.

[0003] Pulverized coal boiler exhaust gas desulfurization refers to the removal of sulfur dioxide (SO 2 ) to reduce environmental pollution. Sulfur dioxide is one of the main pollutants of coal combustion. If it is not treated, it will seriously affect the air quality and even cause environmental problems such as acid rain when it is discharged into the atmosphere. Common methods for desulfurization of exhaust gas from pulverized coal boilers include wet desulfurization, dry desulfurization and semi-dry desulfurization.

[0004] In the existing dry desulfurization equipment, the continuous intake desulfurization process can effectively remove sulfur dioxide (SO 2 ), but there are also some disadvantages. The reaction efficiency of dry desulfurization is affected by many factors. For example, when the lime does not contact the sulfur dioxide in the exhaust gas sufficiently, the exhaust gas will be discharged without fully reacting, resulting in poor desulfurization effect.

[0005] In summary, the prior art lacks a technology for zoned desulfurization of pulverized coal boiler exhaust gas. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a desulfurization device for exhaust gas from a pulverized coal boiler.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: the desulfurization equipment of coal powder boiler exhaust gas includes an outer shell, a lime seat is fixedly connected to the outer shell, a material receiving plate is rotatably connected to the inner shell, a mounting seat is fixedly connected to the material receiving plate, a plurality of desulfurization pipes are fixedly connected to the mounting seat, a stirring mechanism is rotatably connected to the inner shell of the desulfurization pipe, a sealing plug is movably inserted at the bottom end of the desulfurization pipe, a driving mechanism is fixedly connected to the inner wall of the bottom end of the outer shell, and a transmission ring is provided on the inner wall of the bottom end of the outer shell.

[0008] Preferably, a guide groove is provided on the inner wall of the shell located at the receiving plate.

[0009] Preferably, an exhaust pipe is connected through the lime seat, a part of the exhaust pipe located in the lime seat is arranged in a spiral structure, one end of the exhaust pipe is fixedly connected to the inner wall of the outer shell, a lime feeding seat is rotatably connected to the inner wall of the bottom end of the lime seat, a quantitative groove is provided on the lime feeding seat, one end of the lime feeding seat extends through the inner wall of the lime seat to the outside and is fixedly connected to an adjusting wheel.

[0010] Preferably, a gear is fixedly connected to the bottom end of the receiving plate, and a plurality of fixed racks are fixedly connected to the receiving plate.

[0011] Preferably, one end of the mounting seat extends through the inner wall of the housing to the outside and is fixedly connected with a plurality of arc-shaped racks, and the arc-shaped racks are meshed and transmission-arranged with the adjusting wheel.

[0012] Preferably, the stirring mechanism includes a universal joint A, which is rotatably connected to the inner wall of the desulfurization pipe, and the end of the universal joint A located inside the desulfurization pipe is fixedly connected to an air duct, and the end of the universal joint A located outside the desulfurization pipe is fixedly connected to a transmission wheel A, a fan blade is rotatably connected inside the air duct, and one end of the fan blade is fixedly connected to a transmission wheel B, an annular rack is fixedly connected to the inner wall of the desulfurization pipe, and the annular rack is meshed with the transmission wheel B for transmission, and the top of the desulfurization pipe is in sliding contact with the inner wall of the top end of the outer shell.

[0013] Preferably, a guide frame is rotatably connected to the bottom end of the sealing plug, one end of the guide frame is slidably matched with the mounting seat, the end of the guide frame close to the outer shell is fixedly connected with a guide head, the outer wall of the guide head is slidably matched with the inner wall of the guide groove, the bottom end of the guide frame is rotatably connected with a universal joint B, one end of the universal joint B is fixedly connected to the sealing plug, the other end of the universal joint B is fixedly connected with a transmission wheel C, and the transmission wheel C is meshed with a fixed rack for transmission.

[0014] Preferably, the driving mechanism includes a motor, the motor is fixedly connected to the inner wall of the bottom end of the shell, a worm is fixedly connected to the output end of the motor, a worm wheel is meshingly provided on one side of the worm, the worm wheel is rotatably connected to the inner wall of the bottom end of the shell, a sector gear is fixedly connected to the worm wheel, the sector gear is meshingly provided with a gear, and a driving wheel is fixedly connected to one end of the worm.

[0015] Preferably, a slotted block is fixedly connected to the inner circle of the transmission ring, an L-shaped rod is slidably provided on the inner wall of the slotted block, the L-shaped rod is rotatably connected to the inner wall of the bottom end of the shell, a driven wheel is fixedly connected to one end of the L-shaped rod, the driven wheel is meshed with the driving wheel for transmission, a plurality of sliding rods are slidably provided on the outer wall of the transmission ring, the sliding rods are slidably provided with the receiving plate and the mounting seat, a movable rack is fixedly connected to the top of the sliding rod, and the movable rack is meshed with the transmission wheel A for transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting up multiple desulfurization pipes for batch and zone desulfurization, and setting up a stirring mechanism in the desulfurization pipe, the efficiency of coal-fired boiler exhaust gas desulfurization can be significantly improved, which can not only ensure that the exhaust gas and lime have sufficient reaction time, but also ensure that the lime is evenly distributed, avoid the accumulation of lime powder or uneven use, optimize the overall desulfurization effect, improve equipment stability, reduce costs, and achieve better desulfurization effect; 2. The combined design of the transmission ring, drive mechanism, stirring mechanism, exhaust pipe and lime holder can significantly improve the desulfurization effect of the exhaust gas of the pulverized coal boiler. The linkage of the equipment not only optimizes the contact efficiency between the exhaust gas and the lime, but also uses the waste heat of the exhaust gas to heat and dehumidify the lime, further improving the desulfurization efficiency, reducing the operating cost, and improving the stability of the system; 3. By setting up the automatic opening and closing mechanism of the guide groove and the sealing plug, the automatic discharge of the reactants and the quantitative feeding design of the lime feeding seat, the pulverized coal boiler exhaust gas desulfurization process has achieved a high degree of automation, which not only improves the efficiency and stability of the desulfurization process, but also effectively reduces manual intervention, optimizes resource utilization, and reduces energy consumption and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the desulfurization equipment for pulverized coal boiler exhaust gas of the present invention; Figure 2 It is a partial cross-sectional schematic diagram of the overall structure of the desulfurization equipment for exhaust gas from a pulverized coal boiler according to the present invention; Figure 3 It is a schematic cross-sectional view of the shell structure of the desulfurization equipment for exhaust gas from a pulverized coal boiler according to the present invention; Figure 4 It is a schematic cross-sectional view of the lime holder structure of the desulfurization equipment for the exhaust gas of a pulverized coal boiler according to the present invention; Figure 5 It is a schematic cross-sectional view of the structure of the receiving plate and other parts of the desulfurization equipment for the exhaust gas of the pulverized coal boiler of the present invention; Figure 6 It is a partial cross-sectional schematic diagram of the structure of the stirring mechanism and other parts of the desulfurization equipment for the exhaust gas of the pulverized coal boiler of the present invention; Figure 7This is a schematic diagram of the sealing plug structure of the desulfurization equipment for exhaust gas from a pulverized coal boiler according to the present invention; Figure 8 The present invention is a schematic diagram of the driving mechanism and transmission ring structure of the desulfurization equipment for exhaust gas from a pulverized coal boiler.

[0018] The following are marked in the figure: 1, shell; 2, lime seat; 3, receiving plate; 4, mounting seat; 5, desulfurization pipe; 6, stirring mechanism; 7, sealing plug; 8, driving mechanism; 9, transmission ring; 101, guide groove; 201, exhaust pipe; 202, lime feeding seat; 203, quantitative groove; 204, regulating wheel; 301, gear; 302, fixed rack; 401, arc rack; 601, universal joint A; 602, air guide pipe; 603, air guide pipe; 604, air guide pipe; 605, air guide pipe; 606, air guide pipe; 607, air guide pipe; 608, air guide pipe; 609, air guide pipe; 610, air guide pipe; 611, air guide pipe; 612, air guide pipe; 613, air guide pipe; 614, air guide pipe; 615, air guide pipe; 616, air guide pipe; 617, air guide pipe; 618, air guide pipe; 619, air guide pipe; 620, air guide pipe; 621, air guide pipe; 622, air guide pipe; 623, air guide pipe; 624, air guide pipe; 625, air guide pipe; 626, air guide pipe; 627, air guide pipe; 628, air guide pipe; 629, air guide pipe; 630, air guide pipe; 631, air guide pipe; 632, air guide pipe; 633, air guide pipe; 634, air guide pipe; 635, air guide pipe; 636, air guide pipe; 637, air guide pipe; 638, air guide pipe; 639, air guide pipe; 640, air guide pipe; 641, air guide pipe; 642, air guide pipe; 643, 03, transmission wheel A; 604, fan blade; 605, transmission wheel B; 501, ring rack; 701, guide frame; 702, guide head; 703, universal joint B; 704, transmission wheel C; 801, motor; 802, worm; 803, worm wheel; 804, sector gear; 805, driving wheel; 901, slotted block; 902, L-shaped rod; 903, driven wheel; 904, sliding rod; 905, movable rack. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] like Figure 1-Figure 8 The desulfurization equipment for pulverized coal boiler exhaust gas shown includes an outer shell 1, a lime seat 2 is fixedly connected to the outer shell 1, a receiving plate 3 is rotatably connected to the inner shell 1, a mounting seat 4 is fixedly connected to the receiving plate 3, a plurality of desulfurization pipes 5 are fixedly connected to the mounting seat 4, a stirring mechanism 6 is rotatably connected to the inner surface of the desulfurization pipe 5, a sealing plug 7 is movably inserted at the bottom end of the desulfurization pipe 5, a driving mechanism 8 is fixedly connected to the inner wall of the bottom end of the outer shell 1, and a transmission ring 9 is provided on the inner wall of the bottom end of the outer shell 1.

[0021] By providing a plurality of desulfurization tubes 5 for desulfurization in batches and zones, and providing a stirring mechanism 6 in the desulfurization tube 5, the efficiency of desulfurization of exhaust gas from pulverized coal boiler can be significantly improved. This can not only ensure that the exhaust gas and lime have sufficient reaction time, but also ensure that the lime is evenly distributed, avoiding the accumulation or uneven use of lime powder, thereby optimizing the overall desulfurization effect, improving equipment stability, reducing costs, and achieving better desulfurization effects.

[0022] like Figure 3 As shown, the inner wall of the housing 1 at the receiving plate 3 is provided with a guide groove 101. One end of the guide groove 101 is provided with a downwardly bent structure. A discharge port is provided on one side of the housing 1.

[0023] like Figure 4 As shown, the lime seat 2 is provided with an exhaust pipe 201 which is connected through and through, and a part of the exhaust pipe 201 located in the lime seat 2 is provided in a spiral structure, one end of the exhaust pipe 201 is fixedly connected to the inner wall of the housing 1, and a lime feeding seat 202 is rotatably connected to the inner wall of the bottom end of the lime seat 2, and a quantitative groove 203 is provided on the lime feeding seat 202, and one end of the lime feeding seat 202 extends through the inner wall of the lime seat 2 to the outside and is fixedly connected to an adjusting wheel 204. The arc-shaped rack 401 connected to the mounting seat 4 drives the adjusting wheel 204 to rotate, so that the adjusting wheel 204 can drive the connected lime feeding seat 202 to rotate, and at this time, the lime in the quantitative groove 203 can fall into the desulfurization pipe 5.

[0024] like Figure 5 As shown, a gear 301 is fixedly connected to the bottom end of the receiving plate 3 , and a plurality of fixed racks 302 are fixedly connected to the receiving plate 3 .

[0025] like Figure 5 As shown, one end of the mounting seat 4 passes through the inner wall of the housing 1 and extends to the outside and is fixedly connected with a plurality of arc-shaped racks 401 , which are meshed and transmitted with the adjusting wheel 204 .

[0026] like Figure 6 As shown, the stirring mechanism 6 includes a universal joint A601, which is rotatably connected to the inner wall of the desulfurization pipe 5, and an end of the universal joint A601 located inside the desulfurization pipe 5 is fixedly connected to an air guide pipe 602, and an end of the universal joint A601 located outside the desulfurization pipe 5 is fixedly connected to a transmission wheel A603, a fan blade 604 is rotatably connected inside the air guide pipe 602, and one end of the fan blade 604 is fixedly connected to a transmission wheel B605, and an annular rack 501 is fixedly connected to the inner wall of the desulfurization pipe 5, and the annular rack 501 is meshed with the transmission wheel B605 for transmission, and the top of the desulfurization pipe 5 is in sliding contact with the inner wall of the top of the outer shell 1. The movable rack 905 will drive the transmission wheel A603 to rotate, so that the transmission wheel A603 drives the connected universal joint A601 to rotate, so that the universal joint A601 can drive the connected air guide pipe 602 to rotate. At this time, under the action of the annular rack 501, the fan blade 604 connected to the transmission wheel B605 will rotate, thereby blowing air to the lime in the desulfurization pipe 5.

[0027] like Figure 7As shown, the bottom end of the sealing plug 7 is rotatably connected with a guide frame 701, one end of the guide frame 701 is slidably matched with the mounting seat 4, one end of the guide frame 701 near the housing 1 is fixedly connected with a guide head 702, the outer wall of the guide head 702 is slidably matched with the inner wall of the guide groove 101, the bottom end of the guide frame 701 is rotatably connected with a universal joint B703, one end of the universal joint B703 is fixedly connected with the sealing plug 7, and the other end of the universal joint B703 is fixedly connected with a transmission wheel C704, and the transmission wheel C704 is meshed with the fixed rack 302. Under the action of the guide groove 101, the guide head 702 will drive the sealing plug 7 connected to the guide frame 701 to move downward, and then under the action of the fixed rack 302, the transmission wheel C704 will rotate, so that the transmission wheel C704 drives the sealing plug 7 connected to the universal joint B703 to rotate, so that the reactant on the sealing plug 7 can fall under the action of the centrifugal force.

[0028] like Figure 8 As shown, the driving mechanism 8 includes a motor 801, which is fixedly connected to the inner wall of the bottom end of the housing 1, and a worm 802 is fixedly connected to the output end of the motor 801, and a worm wheel 803 is meshingly provided on one side of the worm 802, and the worm wheel 803 is rotatably connected to the inner wall of the bottom end of the housing 1, and a sector gear 804 is fixedly connected to the worm wheel 803, and the sector gear 804 is meshingly provided with the gear 301, and a driving wheel 805 is fixedly connected to one end of the worm 802. The motor 801 drives the connected worm 802 to rotate, so that the worm 802 drives the worm wheel 803 to rotate, and the worm wheel 803 drives the connected sector gear 804 to rotate, and at this time, the sector gear 804 drives the material receiving plate 3 connected to the gear 301 to rotate.

[0029] like Figure 8 As shown, a slotted block 901 is fixedly connected to the inner circle of the transmission ring 9, and an L-shaped rod 902 is slidably provided on the inner wall of the slotted block 901. The L-shaped rod 902 is rotatably connected to the inner wall of the bottom end of the shell 1, and a driven wheel 903 is fixedly connected to one end of the L-shaped rod 902. The driven wheel 903 is meshed with the driving wheel 805 for transmission. A plurality of sliding rods 904 are slidably provided on the outer wall of the transmission ring 9. The sliding rods 904 are slidably provided with the receiving plate 3 and the mounting seat 4. A movable rack 905 is fixedly connected to the top of the sliding rod 904, and the movable rack 905 is meshed with the transmission wheel A603 for transmission. The worm 802 will drive the connected driving wheel 805 to rotate, and the driving wheel 805 will drive the driven wheel 903 to rotate, so that the driven wheel 903 drives the connected L-shaped rod 902 to rotate, so that the other end of the L-shaped rod 902 slides in the slotted block 901, so that the transmission ring 9 connected to the slotted block 901 moves up and down, and then the transmission ring 9 drives the movable rack 905 on the sliding rod 904 to move up and down.

[0030] Working principle: When it is necessary to desulfurize the exhaust gas from the pulverized coal boiler, when the mounting seat 4 drives the desulfurization pipe 5 to rotate to the bottom of the lime seat 2, the exhaust gas from the pulverized coal boiler is injected into the desulfurization pipe 5 through the exhaust pipe 201. When the exhaust gas from the pulverized coal boiler passes through the exhaust pipe 201, the waste heat in the exhaust gas will heat and dehumidify the lime in the lime seat 2 through the exhaust pipe 201. Then the arc-shaped rack 401 connected to the mounting seat 4 will drive the adjusting wheel 204 to rotate, so that the adjusting wheel 204 can drive the connected lime feeding seat 202 to rotate. At this time, the lime in the quantitative tank 203 can fall into the desulfurization pipe 5 for desulfurization. Then, the motor 801 is used to drive the connected worm 802 to rotate, so that the worm 802 drives the worm wheel 803 to rotate, so that the worm wheel 803 drives the connected sector gear 804 to rotate, and at this time, the sector gear 804 drives the receiving plate 3 connected to the gear 301 to rotate; At this time, the worm 802 will drive the connected driving wheel 805 to rotate, and the driving wheel 805 will drive the driven wheel 903 to rotate, so that the driven wheel 903 drives the connected L-shaped rod 902 to rotate, so that the other end of the L-shaped rod 902 slides in the slotted block 901, so that the transmission ring 9 connected to the slotted block 901 moves up and down, and then the transmission ring 9 drives the movable rack 905 on the sliding rod 904 to move up and down; Then the movable rack 905 drives the transmission wheel A603 to rotate, so that the transmission wheel A603 drives the connected universal joint A601 to rotate, so that the universal joint A601 can drive the connected air guide pipe 602 to rotate. At this time, under the action of the annular rack 501, the fan blade 604 connected to the transmission wheel B605 will rotate, so as to blow air to the lime in the desulfurization pipe 5, so that the lime can be evenly distributed in the exhaust gas in the desulfurization pipe 5; When the desulfurization pipe 5 rotates to the side where the guide groove 101 bends downward, the guide head 702 will drive the sealing plug 7 connected to the guide frame 701 to move downward under the action of the guide groove 101, and then the transmission wheel C704 will rotate under the action of the fixed rack 302, so that the transmission wheel C704 drives the sealing plug 7 connected to the universal joint B703 to rotate, so that the reactants on the sealing plug 7 can fall under the action of centrifugal force to complete the cleaning, and then the reactants will fall to the receiving plate 3 and be cleaned through the opening on the side of the outer shell 1.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A desulfurization device for exhaust gas from a pulverized coal boiler, comprising a housing (1), characterized in that: A lime holder (2) is fixedly connected to the outer shell (1), a material receiving plate (3) is rotatably connected to the inner shell (1), a mounting seat (4) is fixedly connected to the material receiving plate (3), a plurality of desulfurization pipes (5) are fixedly connected to the mounting seat (4), a stirring mechanism (6) is rotatably connected to the inner shell (5), a sealing plug (7) is movably inserted at the bottom end of the desulfurization pipe (5), a driving mechanism (8) is fixedly connected to the inner wall of the bottom end of the outer shell (1), and a transmission ring (9) is provided on the inner wall of the bottom end of the outer shell (1).

2. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 1 is characterized in that: A guide groove (101) is provided on the inner wall of the housing (1) located at the material receiving plate (3).

3. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 2 is characterized in that: An exhaust pipe (201) is provided in the lime seat (2) and is connected thereto. A portion of the exhaust pipe (201) located in the lime seat (2) is provided in a spiral structure. One end of the exhaust pipe (201) is fixedly connected to the inner wall of the outer shell (1). A lime feeding seat (202) is rotatably connected to the inner wall of the bottom end of the lime seat (2). A quantitative groove (203) is provided on the lime feeding seat (202). One end of the lime feeding seat (202) passes through the inner wall of the lime seat (2) and extends to the outside and is fixedly connected thereto with an adjusting wheel (204).

4. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 3 is characterized in that: A gear (301) is fixedly connected to the bottom end of the material receiving plate (3), and a plurality of fixed racks (302) are fixedly connected to the material receiving plate (3).

5. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 4, characterized in that: One end of the mounting seat (4) passes through the inner wall of the housing (1) and extends to the outside and is fixedly connected with a plurality of arc-shaped racks (401), and the arc-shaped racks (401) are meshed and transmitted with the adjusting wheel (204).

6. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 5, characterized in that: The stirring mechanism (6) comprises a universal joint A (601), the universal joint A (601) being rotatably connected to the inner wall of the desulfurization pipe (5), one end of the universal joint A (601) located inside the desulfurization pipe (5) being fixedly connected to an air guide pipe (602), one end of the universal joint A (601) located outside the desulfurization pipe (5) being fixedly connected to a transmission wheel A (603), a fan blade (604) being rotatably connected inside the air guide pipe (602), one end of the fan blade (604) being fixedly connected to a transmission wheel B (605), an annular rack (501) being fixedly connected to the inner wall of the desulfurization pipe (5), the annular rack (501) being meshed with the transmission wheel B (605) for transmission, and the top end of the desulfurization pipe (5) being in sliding contact with the inner wall of the top end of the housing (1).

7. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 6, characterized in that: The bottom end of the sealing plug (7) is rotatably connected to a guide frame (701), one end of the guide frame (701) is slidably matched with the mounting seat (4), one end of the guide frame (701) close to the housing (1) is fixedly connected to a guide head (702), the outer wall of the guide head (702) is slidably matched with the inner wall of the guide groove (101), the bottom end of the guide frame (701) is rotatably connected to a universal joint B (703), one end of the universal joint B (703) is fixedly connected to the sealing plug (7), and the other end of the universal joint B (703) is fixedly connected to a transmission wheel C (704), and the transmission wheel C (704) is meshed with a fixed rack (302) for transmission.

8. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 7, characterized in that: The driving mechanism (8) comprises a motor (801), the motor (801) being fixedly connected to the inner wall of the bottom end of the housing (1), a worm (802) being fixedly connected to the output end of the motor (801), a worm wheel (803) being meshingly connected to one side of the worm (802), the worm wheel (803) being rotatably connected to the inner wall of the bottom end of the housing (1), a sector gear (804) being fixedly connected to the worm wheel (803), the sector gear (804) being meshingly connected to the gear (301), and a driving wheel (805) being fixedly connected to one end of the worm (802).

9. The desulfurization equipment for pulverized coal boiler exhaust gas according to claim 8, characterized in that: A slotted block (901) is fixedly connected to the inner circumference of the transmission ring (9), an L-shaped rod (902) is slidably arranged on the inner wall of the slotted block (901), the L-shaped rod (902) is rotatably connected to the inner wall of the bottom end of the housing (1), a driven wheel (903) is fixedly connected to one end of the L-shaped rod (902), the driven wheel (903) is meshed with the driving wheel (805) for transmission, a plurality of sliding rods (904) are slidably arranged on the outer wall of the transmission ring (9), the sliding rods (904) are slidably arranged with the receiving plate (3) and the mounting seat (4), a movable rack (905) is fixedly connected to the top of the sliding rod (904), the movable rack (905) is meshed with the transmission wheel A (603) for transmission.

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