A power plant flue gas dust removal device

Abstract

This invention relates to the technical field of power plant flue gas treatment, and particularly to a power plant flue gas dust removal device, comprising a dust collection tank. The dust collection tank has an exhaust chamber and an intake chamber on its upper and lower sides, respectively. An exhaust pipe connected to the exhaust chamber and an intake pipe connected to the intake chamber are fixedly installed on the outer wall of the dust collection tank. Multiple air guide holes are evenly spaced at the lower end of the exhaust chamber. A filter screen is installed inside the exhaust chamber, with the lower end of the filter screen fitting snugly against the upper end of the air guide holes. An adjustment chamber is located on the lower side of the intake chamber, and a drive motor is fixedly installed inside the adjustment chamber. A driven gear is fixedly installed on the lower side of a rotating disk, and a driving gear, meshing with the driven gear, is fixedly installed on the outer end of the drive motor via its output shaft. This invention provides a power plant flue gas dust removal device that can clean the dust inside the filter screen, preventing dust from clogging the filter screen and ensuring the filter screen's effectiveness in treating flue gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power plant flue gas treatment, in particular to a power plant flue gas dust removal equipment. BACKGROUND

[0002] Coal-fired power plants produce a large amount of flue gas during the combustion of coal, which contains a large amount of dust and other harmful substances. If these substances are directly discharged into the atmosphere, they will cause serious pollution to the environment, affect air quality, and harm human health. Therefore, in order to avoid pollution caused by these harmful impurities to the environment, during the flue gas emission process, dust removal equipment is needed to filter and collect dust and other impurities;

[0003] At present, the flue gas emission speed of power plants is fast, which causes the dust in the flue gas to quickly block the surface of the filter screen, so that most of the existing dust removal equipment adopts a self-cleaning filter mechanism, that is, by rotating the dust removal pipe, the dust removal pipe is respectively aligned with each filter screen, and the pressure difference on both sides of the filter screen is changed to push the dust on the surface of the filter screen outward and discharge, achieving the effect of cleaning the filter screen. The surface dust forms a blockage on the surface of the filter screen;

[0004] However, when the existing motor drives the dust removal pipe to rotate, the output shaft drives the dust removal pipe to rotate at a constant speed, and in order to ensure that a pressure difference change can be formed on both sides of the filter screen, the dust removal pipe needs to be completely aligned with the filter screen, which causes the motor to need to strictly control the rotation angle of the output shaft through precise sensors and other control equipment. This obviously increases the cost of equipment, improves the operation difficulty, and is inconvenient, therefore, we propose a power plant flue gas dust removal equipment. SUMMARY

[0005] In order to solve the above problems, the present application provides a power plant flue gas dust removal equipment.

[0006] The utility model discloses adopt following technical scheme, a kind of power plant flue gas dust removal equipment, including dust removal tank, the upper and lower sides of the inner chamber of dust removal tank are respectively provided with exhaust cavity and air inlet cavity, the outer wall of dust removal tank is fixedly installed with the exhaust pipe being connected with exhaust cavity and the air inlet pipe being connected with air inlet cavity, the lower end of exhaust cavity is provided with multiple air guide holes at equal intervals, the filter screen is equipped in exhaust cavity, the lower end of filter screen and the upper end of air guide hole are mutually attached, the lower side of air inlet cavity is provided with adjusting cavity, the dust guide pipe is rotatably installed in adjusting cavity, the dust guide pipe is arranged in S shape, the upper end of dust guide pipe is fixedly installed with dust guide hopper, dust guide hopper and air guide hole lower end position correspond, dust guide pipe periphery is provided with dust guide cavity, adjusting cavity is passed by dust removal pipe, the inner end of dust removal pipe is fixedly installed with dust guide frame, dust guide cavity is rotatably installed in dust guide frame, dust guide pipe periphery is fixedly installed with grooved wheel, the periphery of grooved wheel is provided with corresponding radial slot with the number of air guide hole, rotating disc is rotatably installed in adjusting cavity, the periphery of the upper end of rotating disc is fixedly installed with round pin being insertedly connected with radial slot, driving motor is fixedly installed in adjusting cavity, the lower side of rotating disc is fixedly installed with driven gear, the outer end of driving motor is fixedly installed with driving gear being meshedly connected with driven gear.

[0007] As further description of the above technical solution: the upper end of the air guide hole is fixedly installed with an inner positioning support, the upper end of the exhaust cavity is provided with an installation cavity corresponding to the position of each air guide hole, the installation cavity is insertedly installed with a positioning block, and the lower end of the positioning block is fixedly installed with an outer positioning support.

[0008] As further description of the above technical solution: the lower end of the filter screen is fixedly installed with a counterweight ring, and the lower end of the outer positioning support is fixedly installed with a positioning ring attached to the upper end of the counterweight ring.

[0009] As further description of the above technical solution: the upper end of the positioning block is provided with a recess, the periphery of the recess is provided with a first positioning hole, the inner wall of the installation cavity is provided with a second positioning hole, and the first positioning hole and the second positioning hole are insertedly installed with a positioning plug rod.

[0010] As further description of the above technical solution: a rotating rod is rotatably installed in the recess, the upper and lower sides of the periphery of the rotating rod are respectively fixedly installed with a first rotating plate and a second rotating plate, the upper end of the first rotating plate is attached to the upper end of the recess, the lower end of the positioning plug rod is fixedly installed with a sliding rod, and the upper end of the second rotating plate is provided with an arc-shaped sliding groove in sliding connection with the sliding rod.

[0011] As further description of the above technical solution: the lower end of the positioning plug rod is inwardly arranged obliquely, the rotating rod is provided with a positioning plug hole in the inside, a disc spring is sleeved on the periphery of the rotating rod and insertedly connected with the positioning plug hole, a positioning clamping plate is fixedly installed in the inner wall of the recess, and the outer end of the disc spring is clamped with the positioning clamping plate.

[0012] As the further description of the above technical scheme: the movable plate is slidably installed in the exhaust cavity, a through cavity is formed in the periphery of the movable plate, a cleaning brush is fixedly installed on the inner wall of the through cavity, and the cleaning brush is in close contact with the periphery of the filter screen.

[0013] As the further description of the above technical scheme: a limiting sliding rail is fixedly installed inside, and a limiting sliding block in sliding connection with the limiting sliding rail is fixedly installed on the periphery of the movable plate.

[0014] As the further description of the above technical scheme: a second gear is rotatably installed at the bottom of the adjusting cavity, the dust guide pipe is rotatably installed on the upper end of the second gear, a reciprocating lead screw is fixedly installed on the upper end of the second gear, a protrusion in sliding connection with the periphery of the reciprocating lead screw is fixedly installed on the middle part of the movable plate, and a first gear in meshing connection with the second gear is fixedly installed on the lower end of the rotating disc.

[0015] The power plant flue gas dust removal equipment provided by the application has the following improvements and advantages compared with the prior art:

[0016] Firstly, the rotating rotating disc can drive the intermittent rotation of the groove wheel through the plug-in connection between the round pin and the radial groove, so that the dust guide pipe is aligned with each air guide hole, the pressure difference between the inner and outer sides of each filter screen is ensured to change, the dust on the filter screen can be discharged outward in cooperation with the dust guide frame, the dust guide cavity and the dust discharge pipe, the cleaning effect of the filter screen is achieved, the surface of the filter screen is prevented from being blocked, and the filtering effect of the filter screen on dust is improved.

[0017] Secondly, the installation cavity is provided, the filter screen can be installed and dismounted in cooperation with the outer positioning support and the inner positioning support, and the filter screen can be positioned, the positioning block and the outer positioning support can be positioned through the plug-in connection between the positioning plug and the first positioning hole and the second positioning hole, the positioning effect of the filter screen is achieved, and the filtering effect of the filter screen on dust is ensured.

[0018] Thirdly, the reciprocating lead screw is in sliding connection with the movable plate, and the cleaning brush is arranged in the through cavity, so that the rotating reciprocating lead screw can drive the cleaning brush to reciprocate up and down on the periphery of the filter screen, the dust adhered to the inner wall of the filter screen can be pushed inward to the middle part of the inner cavity of the filter screen, and the recycling effect of the dust guide pipe on dust is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further explained in combination with the drawings and embodiments:

[0020] Figure 1 The dust removal tank external structure schematic view provided for the embodiments of the application is shown in the figure.

[0021] Figure 2The dust removal tank internal structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0022] Figure 3 The air inlet cavity and exhaust pipe internal structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0023] Figure 4 The filter screen and two-side positioning support internal split structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0024] Figure 5 The positioning block internal split structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0025] Figure 6 The movable plate and dust guide pipe internal structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0026] Figure 7 The dust guide pipe internal structure schematic diagram provided for the embodiment of the present application is shown in the figure.

[0027] In the figure:

[0028] 1, dust removal tank;

[0029] 11, air inlet cavity; 111, air inlet pipe;

[0030] 12, exhaust cavity; 121, exhaust pipe;

[0031] 13, filter screen; 131, air guide hole;

[0032] 14, adjusting cavity; 140, dust guide pipe; 141, dust guide funnel; 142, dust guide cavity; 143, dust guide frame; 144, dust discharge pipe;

[0033] 15, driving motor; 151, driving gear; 152, rotating disc; 153, round pin; 154, driven gear; 155, groove wheel; 156, radial groove;

[0034] 2, mounting cavity; 21, inner positioning support; 22, counterweight ring; 23, positioning block; 24, outer positioning support; 25, positioning ring;

[0035] 26, concave cavity; 261, first positioning hole; 262, second positioning hole; 263, positioning plug rod;

[0036] 27, rotating rod; 271, second rotating plate; 272, first rotating plate; 273, sliding rod; 274, arc-shaped sliding groove;

[0037] 28, disc spring; 281, positioning insertion hole; 282, positioning clamping plate;

[0038] 3, movable plate; 30, through cavity; 31, limiting slide rail; 32, limiting slide block; 33, cleaning brush; 34, reciprocating screw; 35, first gear; 36, second gear; 37, protrusion. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0040] Please refer to Figure 1 - Figure 7 The embodiment of the present application provides a technical scheme: a power plant flue gas dust removal equipment, including dust removal tank 1, the upper and lower sides of the inner cavity of dust removal tank 1 are respectively provided with exhaust cavity 12 and air inlet cavity 11, the outer wall of dust removal tank 1 is fixedly installed with exhaust pipe 121 connected with exhaust cavity 12 and air inlet pipe 111 connected with air inlet cavity 11, a plurality of air guide holes 131 are equally spaced at the lower end of exhaust cavity 12, a filter screen 13 is arranged in exhaust cavity 12, the lower end of filter screen 13 is matched with the upper end of air guide hole 131, an adjusting cavity 14 is arranged at the lower side of air inlet cavity 11, a dust guide pipe 140 is rotatably installed in adjusting cavity 14, the dust guide pipe 140 is arranged in an S shape, a dust guide funnel 141 is fixedly installed at the upper end of dust guide pipe 140, the dust guide funnel 141 corresponds to the position of the lower end of air guide hole 131, a dust guide cavity 142 is arranged around the dust guide pipe 140, a dust removal pipe 144 is arranged in adjusting cavity 14, a dust guide frame 143 is fixedly installed at the inner end of dust removal pipe 144, the dust guide cavity 142 is rotatably installed in the dust guide frame 143, a grooved wheel 155 is fixedly installed around the dust guide pipe 140, a plurality of radial grooves 156 corresponding to the number of air guide holes 131 are arranged around the grooved wheel 155, a rotating disc 152 is rotatably installed in adjusting cavity 14, a round pin 153 is fixedly installed around the upper end of rotating disc 152 and is connected with radial grooves 156, a driving motor 15 is fixedly installed in adjusting cavity 14, a driven gear 154 is fixedly installed at the lower side of rotating disc 152, and a driving gear 151 is fixedly installed at the outer end of driving motor 15 and is meshed with driven gear 154.

[0041] Working principle: in use, the driving motor 15 is started, the meshing connection between the driving gear 151 and the driven gear 154 enables the driving motor 15 to drive the rotating disc 152 to rotate through the output shaft of the driving motor 15, and the rotating rotating disc 152 drives the intermittent rotation of the grooved wheel 155 through the plug-in connection between the round pin 153 and the radial groove 156, so that the dust guide funnel 141 at the upper end of the dust guide pipe 140 can be aligned with the lower end of each air guide hole 131 in turn.

[0042] Through the air inlet pipe 111, cooperating with the external fan, the flue gas containing dust can be injected into the air inlet cavity 11 and enter the air outlet cavity 12 upwardly, cooperating with the air outlet pipe 121, the flue gas can be discharged outwardly, and when the flue gas passes through the filter screen 13, the dust in the flue gas can be filtered through the filter screen 13;

[0043] When the dust guide funnel 141 is aligned with the air guide hole 131, the air guide hole 131 is sealed, so that the flue gas cannot enter the air guide hole 131, but the outer periphery of the upper end of the filter screen 13 is not sealed, which causes the flue gas in the air outlet pipe 121 to enter the filter screen 13 from the outside to the inside, thereby forming a pressure difference change between the inside and outside of the filter screen 13, the dust inside the filter screen 13 can be pushed inwardly, and the dust can be discharged outwardly through the dust guide pipe 140, the dust guide cavity 142, the dust guide frame 143 and the dust discharge pipe 144, so that the dust on the inner wall of the filter screen 13 can be cleaned, avoiding the dust from blocking the inner wall of the filter screen 13, and ensuring the filtering effect of the filter screen 13 on the dust.

[0044] In still another embodiment of the application, an inner positioning bracket 21 is fixedly installed on the upper end of the air guide hole 131, and an installation cavity 2 corresponding to the position of each air guide hole 131 is formed in the upper end of the air outlet cavity 12, a positioning block 23 is inserted and installed in the installation cavity 2, an outer positioning bracket 24 is fixedly installed at the lower end of the positioning block 23, the filter screen 13 is arranged between the inner positioning bracket 21 and the outer positioning bracket 24, a counterweight ring 22 is fixedly installed at the lower end of the filter screen 13, and a positioning ring 25 abutting the upper end of the counterweight ring 22 is fixedly installed at the lower end of the outer positioning bracket 24.

[0045] Specifically, when the filter screen 13 needs to be installed, the filter screen 13 is placed on the upper end of the inner positioning bracket 21 through the installation cavity 2, and the lower end of the filter screen 13 is driven to move downwardly through the counterweight ring 22 at the lower end of the filter screen 13, so that the filter screen 13 can be installed on the outer periphery of the inner positioning bracket 21.

[0046] Then, the outer positioning support 24 is installed on the periphery of the filter screen 13 through the installation cavity 2, when the outer end of the positioning plug rod 263 contacts with the inner wall of the installation cavity 2, the positioning plug rod 263 can be pushed into the first positioning hole 261 due to the inclined inward setting of the lower end of the positioning plug rod 263, and the inwardly retracting positioning plug rod 263 can drive the second rotating plate 271 to rotate through the sliding connection between the slide rod 273 and the arc-shaped sliding groove 274;

[0047] When the outer positioning support 24 moves downward to the position where the first positioning hole 261 and the second positioning hole 262 are opposite to each other, the inner wall of the installation cavity 2 loses the pressing effect on the positioning plug rod 263, and the second rotating plate 271 can be reversely rotated under the action of the restoring deformation of the disc spring 28, so as to drive the positioning plug rod 263 to move outward to be inserted into the first positioning hole 261 and the second positioning hole 262, and the positioning block 23 can be positioned in the installation cavity 2, at this time, the lower end of the positioning ring 25 contacts with the upper end of the counterweight ring 22, and the filter screen 13 can be positioned between the inner positioning support 21 and the outer positioning support 24;

[0048] When the filter screen 13 needs to be disassembled, the first rotating plate 272 is rotated to drive the positioning plug rod 263 to retract inwardly to be separated from the second positioning hole 262 through the sliding connection between the arc-shaped sliding groove 274 and the slide rod 273, the positioning block 23 and the outer positioning support 24 can be taken out in the installation cavity 2, and then the filter screen 13 can be disassembled.

[0049] In another embodiment of the present application, the movable plate 3 is slidably installed in the exhaust cavity 12, the movable plate 3 is provided with a through cavity 30 on the periphery, the cleaning brush 33 is fixedly installed on the inner wall of the through cavity 30, and the cleaning brush 33 is in contact with the periphery of the filter screen 13; the limiting slide rail 31 is fixedly installed in the recessed cavity 26, and the limiting slide block 32 which is in sliding connection with the limiting slide rail 31 is fixedly installed on the periphery of the movable plate 3; the second gear 36 is rotatably installed on the bottom of the adjusting cavity 14, the dust guide pipe 140 is rotatably installed on the upper end of the second gear 36, the reciprocating lead screw 34 is fixedly installed on the upper end of the second gear 36, the protrusion 37 which is in sliding connection with the periphery of the reciprocating lead screw 34 is fixedly installed in the middle of the movable plate 3, and the first gear 35 which is in meshing connection with the second gear 36 is fixedly installed on the lower end of the rotating disc 152.

[0050] Specifically, when the drive motor 15 is started, the dust guide pipe 140 is driven to rotate intermittently through the meshing connection between the drive gear 151 and the driven gear 154 and the insertion connection between the round pin 153 and the radial groove 156. The rotating disk 152 can drive the reciprocating screw 34 to rotate uniformly in one direction through the meshing connection between the first gear 35 and the first gear 35. Under the restriction of the movement direction of the movable plate 3 by the sliding connection between the limiting slide rail 31 and the limiting slider 32, the rotating reciprocating screw 34 can drive the movable plate 3 to move up and down reciprocally through the sliding connection between the sliding rail 31 and the protrusion 37. This allows the cleaning brush 33, which moves up and down reciprocally around the filter screen 13, to push the dust adhering to the inner wall of the filter screen 13 inward, further improving the cleaning effect on the inner wall of the filter screen 13.

[0051] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An electric plant flue gas dedusting device comprising a dedusting tank (1), characterized in that: The dust removal tank (1) is provided with an exhaust cavity (12) and an air inlet cavity (11) on the upper and lower sides of the inner cavity, respectively, and is fixedly provided with an exhaust pipe (121) connected with the exhaust cavity (12) and an air inlet pipe (111) connected with the air inlet cavity (11) on the outer wall, a plurality of air guide holes (131) are arranged at equal intervals at the lower end of the exhaust cavity (12), a filter screen (13) is arranged in the exhaust cavity (12), the lower end of the filter screen (13) is matched with the upper end of the air guide hole (131), an adjusting cavity (14) is arranged on the lower side of the air inlet cavity (11), a dust guide pipe (140) is rotatably arranged in the adjusting cavity (14), the dust guide pipe (140) is arranged in an S shape, a dust guide funnel (141) is fixedly arranged at the upper end of the dust guide pipe (140), the dust guide funnel (141) corresponds to the position of the lower end of the air guide hole (131), a dust guide cavity (142) is arranged on the periphery of the dust guide pipe (140), a dust removal pipe (144) is arranged in the adjusting cavity (14), a dust guide frame (143) is fixedly arranged at the inner end of the dust removal pipe (144), the dust guide cavity (142) is rotatably arranged in the dust guide frame (143), a groove wheel (155) is fixedly arranged on the periphery of the dust guide pipe (140), a plurality of radial grooves (156) corresponding to the number of the air guide holes (131) are arranged on the periphery of the groove wheel (155), a rotating disc (152) is rotatably arranged in the adjusting cavity (14), a circular pin (153) is fixedly arranged on the periphery of the upper end of the rotating disc (152) and is connected with the radial grooves (156), a driving motor (15) is fixedly arranged in the adjusting cavity (14), a driven gear (154) is fixedly arranged on the lower side of the rotating disc (152), and a driving gear (151) meshingly connected with the driven gear (154) is fixedly arranged on the output shaft of the driving motor (15); The movable plate (3) is slidably arranged in the exhaust cavity (12), the periphery of the movable plate (3) is provided with a through cavity (30), and the inner wall of the through cavity (30) is fixedly provided with a cleaning brush (33), and the cleaning brush (33) is matched with the periphery of the filter screen (13); The second gear (36) is rotatably arranged at the bottom of the adjusting cavity (14), the dust guide pipe (140) is rotatably arranged at the upper end of the second gear (36), the reciprocating lead screw (34) is fixedly arranged at the upper end of the second gear (36), the convex block (37) is fixedly arranged on the middle part of the movable plate (3) and is slidably connected with the periphery of the reciprocating lead screw (34), and the first gear (35) is fixedly arranged at the lower end of the rotating disc (152) and is meshingly connected with the second gear (36).

2. A plant flue gas dedusting device according to claim 1, characterized in that: The upper end of the air guide hole (131) is fixedly provided with an inner positioning support (21), the upper end of the exhaust cavity (12) is provided with an installation cavity (2) corresponding to each air guide hole (131), the installation cavity (2) is insertedly provided with a positioning block (23), the lower end of the positioning block (23) is fixedly provided with an outer positioning support (24), the filter screen (13) is arranged between the inner positioning support (21) and the outer positioning support (24), the lower end of the filter screen (13) is fixedly provided with a counterweight ring (22), and the lower end of the outer positioning support (24) is fixedly provided with a positioning ring (25) abutting the upper end of the counterweight ring (22).

3. A plant flue gas dedusting device according to claim 2, characterized in that: The upper end of the positioning block (23) is provided with a concave cavity (26), the concave cavity (26) is provided with a first positioning hole (261) in the periphery, the inner wall of the installation cavity (2) is provided with a second positioning hole (262), and the first positioning hole (261) and the second positioning hole (262) are insertedly provided with a positioning plug rod (263).

4. A plant flue gas dedusting device according to claim 3, characterized in that: The concave cavity (26) is rotatably provided with a rotating rod (27), the rotating rod (27) is fixedly provided with a first rotating plate (272) and a second rotating plate (271) on the upper and lower sides of the periphery, respectively, the upper end of the first rotating plate (272) abuts the upper end of the concave cavity (26), the lower end of the positioning plug rod (263) is fixedly provided with a sliding rod (273), and the upper end of the second rotating plate (271) is provided with an arc-shaped sliding groove (274) in sliding connection with the sliding rod (273).

5. A plant flue gas dedusting device according to claim 4, characterized in that: The lower end of the positioning plug rod (263) is inwardly arranged in an inclined manner, the rotating rod (27) is provided with a positioning plug hole (281) in the inside, the rotating rod (27) is provided on the periphery with a disc spring (28) inserted into the positioning plug hole (281), the concave cavity (26) is fixedly provided with a positioning clamping plate (282) on the inner wall, and the outer end of the disc spring (28) is clamped with the positioning clamping plate (282).

6. A power plant flue gas dedusting device according to claim 4, characterized in that: The concave cavity (26) is fixedly provided with a limiting sliding rail (31), and the movable plate (3) is fixedly provided with a limiting sliding block (32) in sliding connection with the limiting sliding rail (31).

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