An electrostatic precipitator for thermal power plants

Abstract

The present invention relates to the technical field of flue gas dust removal, specifically to an electrostatic precipitator for a thermal power plant, comprising a dust removal box, a dust removal component and an ash shaking component, wherein a dust removal component is rotatably arranged inside the dust removal box, and a corona electrode is fixedly installed inside the dust removal box. The centrifugal cylinder of the dust removal component rotates to drive multiple throwing bins to rotate, and further the closing shaft drives the closing flap, the rocker arm and the roller to rotate together, and when the roller rotates until its outer wall contacts the front arc guide rail or the inner wall of the rear arc guide rail, the arc guide rail pushes the rocker arm and the closing shaft to rotate along the connection with the throwing bin, so that the closing flap rotates, the mouth of the throwing bin is opened, and the flue gas and charged dust particles inside the centrifugal cylinder are thrown out from the inside of the opened throwing bin, and the negatively charged dust particles are thrown onto the surface of the dust collecting electrode plate, and are adsorbed by the dust collecting electrode plate with positive charge, so as to prevent some large dust particles from being adsorbed onto the dust collecting electrode plate due to gravity, thereby improving the dust removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas dust removal, in particular to an electrostatic dust collector for a thermal power plant. Background Art

[0002] The working principle of a thermal power generator is to generate electricity using fuels such as coal, oil or natural gas. In the generator, fresh air filtered by the air filter is mixed with high-pressure atomized diesel, which is compressed by the piston in the cylinder to form a high-temperature and high-pressure mixed gas. When the temperature rises to a certain level, the mixed gas is ignited, and the high-temperature and high-pressure gas produced by the combustion pushes the piston downward, thereby driving the generator to rotate and convert the chemical energy of the fuel into electrical energy. In the process of thermal power generation, a large amount of flue gas particles will be generated. In order to prevent these flue gas particles from being directly discharged into the atmosphere, it is usually necessary to remove dust from the flue gas. At present, electrostatic precipitators are usually used in industry to treat dust particles in the flue gas of thermal power generation.

[0003] According to a Chinese patent application with the publication number CN109647623A, a Coulomb electrostatic precipitator is disclosed, wherein the beam can provide certain support to the shell, the connecting rod connects all the ring beams into a whole, the keel frame connected to the ring beam can further increase the overall strength of the shell, and the keel frame can provide secondary support to the ring beam, thereby reducing the possibility of thermal deformation of the shell when treating high-temperature flue gas and improving the service life of the equipment. After using the above-mentioned Coulomb electrostatic precipitator, it was found that some larger dust particles were negatively charged by the corona under the action of their own gravity, but the adsorption force of the anode plate on the negative charge alone was not enough to have a strong adsorption effect on the large dust particles far away from the anode plate. In other words, the large dust particles far away from the anode plate are easy to settle under the action of gravity and cannot be well captured and adsorbed by the anode plate. For this reason, we propose an electrostatic precipitator for thermal power plants to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: an electrostatic precipitator for a thermal power plant, comprising a dust removal box, a dust removal component and an ash shaking component, wherein the dust removal component is rotatably arranged inside the dust removal box, a corona electrode piece is fixedly installed at the left end inside the dust removal box, the number of the corona electrode pieces is multiple, and the multiple corona electrode pieces are distributed at equal intervals up and down, and two dust collecting electrode plates distributed front and back are arranged inside the dust removal box;

[0005] The dust removal component includes a centrifugal cylinder rotatably located inside the dust removal box, a plurality of partitions distributed at equal angles are fixedly installed on the inner wall of the centrifugal cylinder, a plurality of centrifugal throwing ports distributed at equal angles are opened on the outer wall of the centrifugal cylinder, a plurality of throwing bins distributed at equal angles are fixedly installed on the outer wall of the centrifugal cylinder, a closing shaft rod is rotatably installed inside the throwing bin, the closing shaft rod movably passes through the left end of the throwing bin, and a closing flap is fixedly installed on the outer wall of the closing shaft rod, a rocker arm is fixedly installed on the left part of the outer wall of the closing shaft rod, and a roller is rotatably installed on the end of the rocker arm away from the closing shaft rod through an axle pin;

[0006] The dust removal component also includes a fixing ring fixedly mounted inside the dust removal box, and the inner wall of the fixing ring is fixedly mounted with two arc-shaped guide rails symmetrically distributed front and back.

[0007] As a preferred solution of the present invention, the partition is located between two adjacent centrifugal throwing ports, the position of the throwing bin corresponds to the position of the centrifugal throwing ports one by one, and the throwing bin is located outside the opening of the centrifugal throwing ports.

[0008] As a preferred solution of the present invention, the closing flap is located inside the throwing bin, and the specifications of the closing flap are compatible with the specifications of the throwing bin. The outer sleeve of the closing shaft is provided with a torsion spring, and the torsion spring is fixedly installed between the throwing bin and the rocker arm.

[0009] As a preferred solution of the present invention, the fixing ring is fixedly installed between the top wall and the bottom wall of the dust removal box through a fixing bracket, the diameter of the fixing ring is larger than the diameter of the centrifugal cylinder, and the center of the fixing ring is concentric with the center of the centrifugal cylinder, and the position of the arc guide rail corresponds to the position of the roller.

[0010] As a preferred solution of the present invention, an air intake pipe is fixedly installed on the left end of the centrifugal cylinder, a power motor is fixedly installed on the bottom of the dust removal box, a driving sprocket is fixedly installed on the output shaft of the power motor, a driven sprocket is fixedly installed on the outer wall of the air intake pipe, a chain is commonly connected between the driving sprocket and the driven sprocket, a through opening is opened at the bottom of the dust removal box, and the chain passes through the through opening at the bottom of the dust removal box.

[0011] As a preferred solution of the present invention, the two dust collecting electrode plates are respectively located at the front and rear of the cam, and a plurality of oscillation springs are fixedly installed between the dust collecting electrode plates and the inner wall of the dust removal box.

[0012] As a preferred solution of the present invention, the ash-shaking component includes a cam fixedly mounted on the outer wall of the air intake pipe and two front and rear "X"-shaped bent rods, the two "X"-shaped bent rods are symmetrically distributed front and back about the central axis of the dust collector box, and the two "X"-shaped bent rods respectively penetrate the front and back of the dust collector box and are slidably connected to the through holes of the dust collector box, a U-shaped wheel frame is fixedly mounted on one end of the "X"-shaped bent rod close to the cam, a guide wheel is rotatably mounted inside the U-shaped wheel frame, the outer wall of the guide wheel abuts against the outer wall of the cam, and the end of the "X"-shaped bent rod away from the U-shaped wheel frame is fixedly connected to the surface of the dust collecting electrode plate.

[0013] As a preferred solution of the present invention, an air inlet hood is fixedly installed on the left end of the dust removal box, and an air outlet hood is fixedly installed on the right end of the dust removal box. The bottom of the dust removal box is penetrated by two leakage grooves distributed front and back, and the two leakage grooves are located at the bottom of two dust collecting electrode plates. The bottom of the dust removal box is detachably installed with two ash collecting boxes distributed front and back, and the two ash collecting boxes are located at the bottom of the leakage grooves.

[0014] As a preferred solution of the present invention, a positioning shaft is fixedly installed on the right end of the centrifugal cylinder, a shaft frame is fixedly installed on the right end of the bottom wall of the dust removal box, and the positioning shaft is rotatably installed inside the shaft frame through a bearing.

[0015] As a preferred solution of the present invention, a standing plate and a guide cover are fixedly installed inside the dust removal box, the guide cover is located on the left side of the standing plate, the air intake pipe is rotatably installed inside the standing plate and the guide cover, the driven sprocket is located between the standing plate and the guide cover, the guide cover is located on the right side of multiple corona electrodes, and the guide cover is funnel-shaped and gradually shrinks to the right.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the rotation of the centrifugal drum of the dust removal component drives multiple throwing bins to rotate, and further the closing shaft drives the closing flap, the rocker arm and the roller to rotate together. When the roller rotates until its outer wall contacts the front arc guide rail or the inner wall of the rear arc guide rail, the arc guide rail pushes the rocker arm and the closing shaft to rotate along the connection with the throwing bin, so that the closing flap rotates, the mouth of the throwing bin is opened, and the smoke and charged dust particles inside the centrifugal drum are thrown out from the open throwing bin, and the negatively charged dust particles are thrown onto the surface of the dust collecting electrode plate and adsorbed by the positively charged dust collecting electrode plate, so that some large dust particles cannot be adsorbed onto the dust collecting electrode plate due to gravity, thereby improving the dust removal effect.

[0018] 2. In the present invention, since the two dust collecting electrode plates are arranged front and back, and the two arc guide rails are also arranged front and back, the arc guide rails can only exert a thrust on the roller when the throwing bin rotates to the forward or backward position with the centrifugal cylinder, that is, it will cause the rocker arm to drive the closing shaft rod and the closing flap to rotate, so that the throwing bin is opened, thereby throwing the negatively charged dust particles forward and backward respectively, so that they are received and adsorbed by the front and rear dust collecting electrode plates, avoiding the problem of large particle sedimentation.

[0019] 3. In the present invention, when the throwing bin turns away from the dust collecting electrode plate, due to the sealing effect of the closing flap on the closing shaft rod, the smoke and dust particles can no longer be thrown out through the throwing bin, ensuring that the dust particles will not be thrown upward or downward, but always thrown forward or backward, so as to be adsorbed by the two positively charged dust collecting electrode plates in front and behind.

[0020] 4. In the present invention, the cam rotates to generate thrust on the guide wheel, and is transmitted to the dust collecting electrode plate through the U-shaped wheel frame and the I-shaped bent rod, causing the oscillation spring to compress and accumulate force, so that under the continuous rotation of the cam and the rebound force of the compressed oscillation spring, the two oscillation springs oscillate back and forth to shake off the adsorbed particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the dust removal box in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the dust removal component in the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the centrifugal cylinder in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the axle frame of the present invention;

[0027] Figure 7 It is a detailed structural schematic diagram of the centrifugal cylinder in the present invention;

[0028] Figure 8 It is a partial structural schematic diagram of the throwing bin in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the ash shaking component in the present invention;

[0030] Fig.10 It is a detailed structural schematic diagram of the dust-shaking component in the present invention.

[0031] In the figure: 100, dust box; 101, air inlet cover; 102, air outlet cover; 104, drain trough; 105, dust box; 106, stand plate; 107, guide cover; 200, dust removal components; 201, centrifugal cylinder; 202, partition; 203, centrifugal throwing port; 204, air inlet pipe; 205, throwing bin; 206, closing shaft; 207, closing flap; 208, rocker arm; 209, roller; 2010 , torsion spring; 2011, fixing ring; 2012, arc guide rail; 2013, positioning shaft; 2014, shaft frame; 300, ash shock component; 301, cam; 302, I-shaped curved rod; 303, U-shaped wheel frame; 304, guide wheel; 400, corona electrode; 501, power motor; 502, driving sprocket; 503, driven sprocket; 504, chain; 600, dust collecting electrode plate; 601, oscillation spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 10 The technical solution provided by the present invention specifically includes the following embodiments:

[0034] Embodiment 1: An electrostatic precipitator for a thermal power plant, comprising a dust removal box 100, a dust removal component 200 and an ash shock component 300, the dust removal box 100 is rotatably provided with a dust removal component 200, a corona electrode piece 400 is fixedly installed at the left end of the interior of the dust removal box 100, a plurality of corona electrode pieces 400 are arranged at equal intervals up and down, two dust collecting electrode plates 600 are arranged front and back inside the dust removal box 100, an air inlet hood 101 is fixedly installed at the left end of the dust removal box 100, and an air outlet hood 102 is fixedly installed at the right end of the dust removal box 100;

[0035] The dust removal component 200 includes a centrifugal cylinder 201 which is rotatably located inside the dust removal box 100, and a plurality of partitions 202 which are distributed at equal angles are fixedly installed on the inner wall of the centrifugal cylinder 201, and a plurality of centrifugal throwing ports 203 which are distributed at equal angles are opened on the outer wall of the centrifugal cylinder 201, and the partitions 202 are located between two adjacent centrifugal throwing ports 203, and a plurality of throwing bins 205 which are distributed at equal angles are fixedly installed on the outer wall of the centrifugal cylinder 201, and the positions of the throwing bins 205 correspond to the positions of the centrifugal throwing ports 203 one by one, and the throwing bins 205 are located at the periphery of the openings of the centrifugal throwing ports 203, and a closing shaft 206 is rotatably installed inside the throwing bin 205, and the closing shaft 206 movably passes through the left end of the throwing bin 205, and a closing flap 207 is fixedly installed on the outer wall of the closing shaft 206, and the closing flap 207 is fixedly installed on the outer wall of the closing shaft 206. 07 is located inside the throwing bin 205, and the specifications of the closing flap 207 are compatible with those of the throwing bin 205. A rocker arm 208 is fixedly installed on the left part of the outer wall of the closing shaft 206. A roller 209 is rotatably installed on the end of the rocker arm 208 away from the closing shaft 206 through an axle pin. The dust removal component 200 also includes a fixed ring 2011 fixedly installed inside the dust removal box 100. Two arc guide rails 2012 symmetrically distributed front and back are fixedly installed on the inner wall of the fixed ring 2011. The fixed ring 2011 is fixedly installed between the top wall and the bottom wall of the dust removal box 100 through a fixed bracket. The diameter of the fixed ring 2011 is larger than the diameter of the centrifugal cylinder 201, and the center of the fixed ring 2011 is concentric with the center of the centrifugal cylinder 201. The position of the arc guide rail 2012 corresponds to the position of the roller 209.

[0036] An air inlet pipe 204 is fixedly installed at the left end of the centrifugal cylinder 201, a power motor 501 is fixedly installed at the bottom of the dust removal box 100, a driving sprocket 502 is fixedly installed on the output shaft of the power motor 501, a driven sprocket 503 is fixedly installed on the outer wall of the air inlet pipe 204, a chain 504 is sleeved between the driving sprocket 502 and the driven sprocket 503, a through opening is opened at the bottom of the dust removal box 100, and the chain 504 passes through the through opening at the bottom of the dust removal box 100;

[0037] Specifically, the present embodiment is as follows: by connecting the air intake hood 101 to the flue gas discharge end of the power plant, the flue gas enters the interior of the dust removal box 100 through the air intake hood 101, and first contacts with a plurality of corona electrodes 400. Under the action of the high-voltage electric field generated by the plurality of corona electrodes 400, the flue gas is electrically charged under the action of the high-voltage electric field to generate cations and anions. The dust particles adsorb the anions and become negatively charged. The negatively charged dust particles and the flue gas enter the interior of the centrifugal cylinder 201 together through the air intake pipe 204, and are separated by a plurality of centrifugal throwing ports 203. At the same time, the output shaft of the power motor 501 drives the driving sprocket 502 to rotate, and further on the chain 504, The driven sprocket 503 is driven to rotate together with the air inlet pipe 204 and the centrifugal cylinder 201 under the connection effect. The rotation of the centrifugal cylinder 201 drives the multiple partitions 202 to rotate together, stirring the smoke and charged dust particles inside the centrifugal cylinder 201, so that the smoke and the charged dust particles generate a rotating centrifugal force and move toward the direction close to the centrifugal throwing port 203. During the rotation of the centrifugal cylinder 201, the multiple throwing bins 205 are also driven to rotate. The rotation of the multiple throwing bins 205 drives the closing flap 207, the rocker arm 208 and the roller 209 to rotate together through the closing shaft rod 206. When the roller 209 rotates to the point where its outer wall and the front arc guide rail 2012 or When the inner wall of the rear arc guide rail 2012 is in contact, the roller 209 is acted upon by the thrust of the arc guide rail 2012, pushing the rocker arm 208 and the closing shaft rod 206 to rotate along the connection with the throwing bin 205, and the rotation of the closing shaft rod 206 further drives the closing flap 207 to rotate, so that the mouth of the throwing bin 205 is opened, so that the smoke and charged dust particles inside the centrifugal cylinder 201 are thrown out from the open throwing bin 205, and the negatively charged dust particles are thrown onto the surface of the dust collecting electrode plate 600, and are just adsorbed by the dust collecting electrode plate 600 with a positive charge, so that some large dust particles cannot be adsorbed to the dust collecting electrode due to gravity. Plate 600 improves the dust removal effect. It should be noted that since the two dust collecting electrode plates 600 are arranged front and back, and the two arc guide rails 2012 are also arranged front and back, the throwing bin 205 has a thrust effect on the roller 209 only when it rotates to the forward or backward position with the centrifugal cylinder 201. That is, it will cause the rocker arm 208 to drive the closing shaft 206 and the closing flap 207 to rotate, so that the throwing bin 205 is opened, thereby throwing the negatively charged dust particles forward and backward respectively, so that they are received and adsorbed by the front and rear dust collecting electrode plates 600, avoiding the problem of large particle sedimentation.

[0038] Furthermore, a torsion spring 2010 is provided on the outer sleeve of the closing shaft 206, and the torsion spring 2010 is fixedly installed between the ejection bin 205 and the rocker arm 208; the roller 209 is driven by the thrust of the arc guide rail 2012 to drive the rocker arm 208 and the closing shaft 206 to rotate, causing the torsion spring 2010 to undergo elastic deformation, thereby causing the torsion spring 2010 to generate a rebound force. As the cam 301 continues to drive the ejection bin 205 to rotate, the ejection bin 205 drives the roller 209 to rotate together with the arc guide rail 2012 through the closing shaft 206 and the rocker arm 208, and after the rocker arm 208 is separated from the arc guide rail 2012, the rocker arm 208 can no longer receive the arc guide rail 2012. The thrust of 12 causes the torsion spring 2010 to be elastically released, pushing the closing shaft 206 to reverse and reset. The reverse reset of the closing shaft 206 drives the closing flap 207 to rotate together, closing the open throwing bin 205. That is to say, when the throwing bin 205 rotates away from the dust collecting electrode plate 600, due to the sealing effect of the closing flap 207 on the closing shaft 206, the smoke and dust particles can no longer be thrown out through the throwing bin 205, ensuring that the dust particles will not be thrown upward or downward, but always thrown forward or backward, so as to be adsorbed by the two front and rear dust collecting electrode plates 600 with positive charge.

[0039] Furthermore, a positioning shaft 2013 is fixedly installed on the right end of the centrifugal barrel 201, and an axis frame 2014 is fixedly installed on the right end of the bottom wall of the dust removal box 100. The positioning shaft 2013 is rotatably installed inside the axis frame 2014 through a bearing; the axis frame 2014 is rotatably connected to the positioning shaft 2013, thereby supporting the right end of the centrifugal barrel 201 and ensuring the stability and smoothness of the rotation of the centrifugal barrel 201.

[0040] Embodiment 2: Two dust collecting electrode plates 600 are respectively located at the front and rear of the cam 301, and a plurality of oscillation springs 601 are fixedly installed between the dust collecting electrode plates 600 and the inner wall of the dust removal box 100;

[0041] The ash-shaking component 300 includes a cam 301 fixedly mounted on the outer wall of the air inlet pipe 204 and two front and rear "J"-shaped bent rods 302, the two "J"-shaped bent rods 302 are symmetrically distributed front and back about the central axis of the dust removal box 100, and the two "J"-shaped bent rods 302 respectively penetrate the front and back of the dust removal box 100, and are slidably connected with the through holes of the dust removal box 100, and one end of the "J"-shaped bent rod 302 close to the cam 301 is fixedly mounted with a U-shaped wheel frame 303, and a guide wheel 304 is rotatably mounted inside the U-shaped wheel frame 303, and the outer wall of the guide wheel 304 abuts against the outer wall of the cam 301, and one end of the "J"-shaped bent rod 302 away from the U-shaped wheel frame 303 is fixedly connected to the surface of the dust collecting electrode plate 600;

[0042] The bottom of the dust removal box 100 is provided with two leakage grooves 104 distributed front and back, and the two leakage grooves 104 are located at the bottom of the two dust collecting electrode plates 600. The bottom of the dust removal box 100 is detachably installed with two ash collecting boxes 105 distributed front and back, and the two ash collecting boxes 105 are located at the bottom of the leakage grooves 104;

[0043] Specifically, the present embodiment drives the cam 301 to rotate by rotating the air intake pipe 204. The rotation of the cam 301 generates a thrust on the guide wheel 304, and transmits it to the dust collecting electrode plate 600 through the U-shaped wheel frame 303 and the I-shaped bent rod 302, causing the oscillation spring 601 to compress and accumulate force. Under the continuous rotation of the cam 301 and the rebound force of the compressed oscillation spring 601, the two oscillation springs 601 oscillate back and forth to shake off the adsorbed particles. The shaken particles fall into the interior of the ash collecting box 105 through the opened leakage groove 104 for collection. It should be noted that the ash collecting box 105 in the present device can be installed at the bottom of the dust removal box 100 by a snap-fit ​​fixing method or a magnetic fixing method. The advantage of this is that the ash collecting box 105 can be cleaned conveniently, thereby improving practicality.

[0044] Embodiment 3: A station plate 106 and a guide cover 107 are fixedly installed inside the dust removal box 100, the guide cover 107 is located on the left side of the station plate 106, the air inlet pipe 204 is rotatably installed inside the station plate 106 and the guide cover 107, the driven sprocket 503 is located between the station plate 106 and the guide cover 107, the guide cover 107 is located on the right side of the plurality of corona electrode pieces 400, and the guide cover 107 is arranged in a funnel shape that gradually shrinks to the right;

[0045] Specifically, in this embodiment, after the smoke enters the dust removal box 100 through the air intake hood 101, it is guided by the air guide hood 107 which gradually shrinks to the right, so that the smoke can enter the interior of the air intake pipe 204 more smoothly. The driven sprocket 503 is arranged between the standing plate 106 and the air guide hood 107. Through the blocking effect of the standing plate 106 and the air guide hood 107, it is ensured that the smoke inside the dust removal box 100 will not overflow through the through-hole opened at the bottom of the dust removal box 100, thereby avoiding air leakage of the device.

[0046] In the present invention, an electrostatic precipitator for a thermal power plant is connected with an air intake hood 101 to a flue gas discharge end of the power plant when it is working. The flue gas enters the interior of the dust removal box 100 through the air intake hood 101, and first contacts with a plurality of corona electrodes 400. Under the action of a high-voltage electric field generated by the plurality of corona electrodes 400, the flue gas is electrically charged under the action of the high-voltage electric field to generate cations and anions. The dust particles adsorb the anions and become negatively charged. The negatively charged dust particles and the flue gas enter the interior of the centrifugal cylinder 201 through an air intake pipe 204, and are separated by a plurality of centrifugal throwing ports 203. At the same time, the output shaft of the power motor 501 drives the driving sprocket 502 to rotate, and further on the chain 50 4, the driven sprocket 503, the air inlet pipe 204 and the centrifugal cylinder 201 are driven to rotate. The rotation of the centrifugal cylinder 201 drives the multiple partitions 202 to rotate together, stirring the smoke and charged dust particles inside the centrifugal cylinder 201, so that the smoke and the charged dust particles generate a rotating centrifugal force and move toward the centrifugal throwing port 203. During the rotation of the centrifugal cylinder 201, the multiple throwing bins 205 are also driven to rotate. The rotation of the multiple throwing bins 205 drives the closing flap 207, the rocker arm 208, the roller 209 and the torsion spring 2010 to rotate together through the closing shaft 206. When the roller 209 rotates to the point where its outer wall and the front arc guide rail 2012 are connected, the roller 209 rotates to the point where the outer wall and the front arc guide rail 2012 are connected. When the roller 209 contacts the inner wall of the arc guide rail 2012 at the rear, the roller 209 is acted upon by the thrust of the arc guide rail 2012, pushing the rocker arm 208 and the closing shaft rod 206 to rotate along the connection with the throwing bin 205, causing the torsion spring 2010 to compress and store force, and the rotation of the closing shaft rod 206 further drives the closing flap 207 to rotate, so that the mouth of the throwing bin 205 is opened, so that the smoke and charged dust particles inside the centrifugal cylinder 201 are thrown out from the open throwing bin 205, and the negatively charged dust particles are thrown onto the surface of the dust collecting electrode plate 600, where they are just adsorbed by the positively charged dust collecting electrode plate 600, so as to prevent some large dust particles from being unable to be adsorbed due to gravity. It is adsorbed onto the dust collecting electrode plate 600, which improves the dust removal effect. It should be noted that since the two dust collecting electrode plates 600 are arranged front and back, and the two arc guide rails 2012 are also arranged front and back, the throwing bin 205 has a thrust effect on the roller 209 only when it rotates to the forward or backward position with the centrifugal cylinder 201, that is, it will cause the rocker arm 208 to drive the closing shaft rod 206 and the closing flap 207 to rotate, so that the throwing bin 205 is opened, thereby throwing the negatively charged dust particles forward and backward respectively, so that they are accepted and adsorbed by the front and rear dust collecting electrode plates 600, avoiding the problem of large particle sedimentation.

[0047] During the rotation, the air intake pipe 204 also drives the cam 301 to rotate. The rotation of the cam 301 generates a thrust on the guide wheel 304, which is transmitted to the dust collecting electrode plate 600 through the U-shaped wheel frame 303 and the I-shaped bent rod 302, causing the oscillation spring 601 to compress and accumulate force. Under the continuous rotation of the cam 301 and the rebound force of the compressed oscillation spring 601, the two oscillation springs 601 oscillate back and forth to shake off the adsorbed particles. The shaken particles fall into the interior of the ash collecting box 105 through the opened leakage groove 104 for collection. It should be noted that the ash collecting box 105 in the present device can be installed at the bottom of the dust removal box 100 by a snap-on fixing method or a magnetic fixing method. The advantage of this is that the ash collecting box 105 can be cleaned conveniently, thereby improving practicality.

[0048] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An electrostatic precipitator for a thermal power plant, comprising a dust removal box (100), a dust removal component (200) and an ash shaking component (300), characterized in that: A dust removal component (200) is rotatably provided inside the dust removal box (100), a corona electrode piece (400) is fixedly installed at the left end inside the dust removal box (100), a plurality of corona electrode pieces (400) are provided, and the plurality of corona electrode pieces (400) are distributed at equal intervals up and down, and two dust collecting electrode plates (600) are provided inside the dust removal box (100) and are distributed front and back; The dust removal component (200) comprises a centrifugal cylinder (201) rotatably located inside the dust removal box (100); a plurality of partitions (202) distributed at equal angles are fixedly mounted on the inner wall of the centrifugal cylinder (201); a plurality of centrifugal throwing ports (203) distributed at equal angles are opened on the outer wall of the centrifugal cylinder (201); a plurality of throwing bins (205) distributed at equal angles are fixedly mounted on the outer wall of the centrifugal cylinder (201); a closing shaft (206) is rotatably mounted inside each of the throwing bins (205); the closing shaft (206) movably penetrates the left end of the throwing bin (205); a closing flap (207) is fixedly mounted on the outer wall of the closing shaft (206); a rocker arm (208) is fixedly mounted on the left portion of the outer wall of the closing shaft (206); and a roller (209) is rotatably mounted on the end of the rocker arm (208) away from the closing shaft (206) via an axle pin; The dust removal component (200) further comprises a fixing ring (2011) fixedly mounted inside the dust removal box (100), and two arc-shaped guide rails (2012) symmetrically distributed front and rear are fixedly mounted on the inner wall of the fixing ring (2011).

2. The electrostatic precipitator for a thermal power plant according to claim 1, characterized in that: The partition plate (202) is located between two adjacent centrifugal throwing ports (203), the position of the throwing bin (205) corresponds to the position of the centrifugal throwing ports (203) one by one, and the throwing bin (205) is located outside the opening of the centrifugal throwing ports (203).

3. An electrostatic precipitator for a thermal power plant according to claim 2, characterized in that: The closing flap (207) is located inside the ejection bin (205), and the specifications of the closing flap (207) are compatible with the specifications of the ejection bin (205). The outer periphery of the closing shaft (206) is provided with a torsion spring (2010), and the torsion spring (2010) is fixedly installed between the ejection bin (205) and the rocker arm (208).

4. The electrostatic precipitator for a thermal power plant according to claim 3, characterized in that: The fixing ring (2011) is fixedly mounted between the top wall and the bottom wall of the dust removal box (100) via a fixing bracket; the diameter of the fixing ring (2011) is greater than the diameter of the centrifugal cylinder (201), and the center of the fixing ring (2011) is concentric with the center of the centrifugal cylinder (201); the position of the arc guide rail (2012) corresponds to the position of the roller (209).

5. The electrostatic precipitator for a thermal power plant according to claim 4, characterized in that: An air intake pipe (204) is fixedly mounted on the left end of the centrifugal cylinder (201); a power motor (501) is fixedly mounted on the bottom of the dust removal box (100); a driving sprocket (502) is fixedly mounted on the output shaft of the power motor (501); a driven sprocket (503) is fixedly mounted on the outer wall of the air intake pipe (204); a chain (504) is sleeved between the driving sprocket (502) and the driven sprocket (503); a through opening is provided at the bottom of the dust removal box (100); and the chain (504) passes through the through opening at the bottom of the dust removal box (100).

6. An electrostatic precipitator for a thermal power plant according to claim 5, characterized in that: The two dust collecting electrode plates (600) are respectively located at the front and rear of the cam (301), and a plurality of oscillation springs (601) are fixedly installed between the dust collecting electrode plates (600) and the inner wall of the dust removal box (100).

7. An electrostatic precipitator for a thermal power plant according to claim 6, characterized in that: The ash-shaking component (300) comprises a cam (301) fixedly mounted on the outer wall of the air inlet pipe (204) and two front and rear "X"-shaped bent rods (302); the two "X"-shaped bent rods (302) are symmetrically distributed front and back about the central axis of the dust removal box (100); the two "X"-shaped bent rods (302) respectively penetrate the front and back sides of the dust removal box (100) and are slidably connected to the through holes of the dust removal box (100); a U-shaped wheel frame (303) is fixedly mounted on one end of the "X"-shaped bent rod (302) close to the cam (301); a guide wheel (304) is rotatably mounted inside the U-shaped wheel frame (303); the outer wall of the guide wheel (304) abuts against the outer wall of the cam (301); and an end of the "X"-shaped bent rod (302) away from the U-shaped wheel frame (303) is fixedly connected to the surface of the dust collecting electrode plate (600).

8. An electrostatic precipitator for a thermal power plant according to claim 7, characterized in that: An air inlet hood (101) is fixedly mounted on the left end of the dust removal box (100), and an air outlet hood (102) is fixedly mounted on the right end of the dust removal box (100). Two leakage grooves (104) distributed front and back are provided through the bottom of the dust removal box (100), and the two leakage grooves (104) are located at the bottom of two dust collecting electrode plates (600). Two ash collecting boxes (105) distributed front and back are detachably mounted on the bottom of the dust removal box (100), and the two ash collecting boxes (105) are located at the bottom of the leakage grooves (104).

9. An electrostatic precipitator for a thermal power plant according to claim 8, characterized in that: A positioning shaft (2013) is fixedly mounted on the right end of the centrifugal cylinder (201), a shaft frame (2014) is fixedly mounted on the right end of the bottom wall of the dust removal box (100), and the positioning shaft (2013) is rotatably mounted inside the shaft frame (2014) via a bearing.

10. The electrostatic precipitator for a thermal power plant according to claim 5, characterized in that: A station plate (106) and a flow guide cover (107) are fixedly installed inside the dust removal box (100), the flow guide cover (107) is located on the left side of the station plate (106), the air inlet pipe (204) is rotatably installed inside the station plate (106) and the flow guide cover (107), the driven sprocket (503) is located between the station plate (106) and the flow guide cover (107), the flow guide cover (107) is located on the right side of the plurality of corona electrode plates (400), and the flow guide cover (107) is arranged in a funnel shape that gradually shrinks toward the right.

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