Power plant flue ash removal device

Abstract

The invention provides a power plant flue ash removal device, and relates to the field of flue ash removal, the power plant flue ash removal device comprises a flue body, and a reciprocating screw rod is arranged in the flue body; an ash removal assembly is arranged between the outer wall of the reciprocating screw rod and the inner wall of the flue body and comprises a magnetic sleeve installed on the outer wall of the reciprocating screw rod in a sliding mode, a plurality of connecting rods are installed on the outer wall of the magnetic sleeve in an array mode, and rotating rings are fixedly installed at the ends of the connecting rods. An assembling ring is rotationally installed on the outer wall of the rotating ring in a clamped mode, two L-shaped rods are symmetrically installed on the outer wall of the connecting rod, and the outer walls of the ends of the two L-shaped rods are attached to the upper outer wall and the lower outer wall of the assembling ring correspondingly. In order to solve the problems that dust and water in the flue are combined to form dust like cement, the dust is solidified in a pipeline and is difficult to remove, the dust cleaning assembly is arranged, after the dust cleaning assembly encounters the solidified dust, a crushing steel needle moves up and down in a reciprocating mode, the dust is impacted and crushed, and therefore the effect of removing the solidified dust in the flue is achieved.

Description

Technical Field

[0001] The invention relates to the field of flue dust cleaning, and in particular to a flue dust cleaning device for a power plant. Background Art

[0002] Due to long-term use, a large amount of dust accumulates inside the flue of the power plant. The dust in the flue often contains silicon dioxide, calcium oxide, aluminum oxide, iron oxide and other components. When combined with water, it forms cement-like dirt that solidifies in the pipe and is difficult to remove. It is difficult to remove with a simple brush and scraper. However, manual cleaning of the inner wall of the flue is not only labor-intensive, but also has a small internal space in the flue, and there is a large amount of dust and harmful substances inside, which is not conducive to the health of the operator.

[0003] For example: the “A flue dust cleaning device for a power plant” disclosed in the Chinese invention patent / Chinese utility model (application number: CN202110519825.4) discloses in its specification: At present, the flue gas after combustion in coal-fired power plants or biomass power plants contains a large amount of ash. The wear or blockage of the heat exchanger or the catalyst used for denitrification by the ash has a direct adverse effect on the safe operation and economic benefits of the power plant. Due to the long working hours of power plants (all work continuously for 24 hours) and large emissions, an SCR denitrification device is usually installed at the end of the flue. The solid particles contained in the smoke will wear the catalyst in the denitrification device, affecting the normal operation of the denitrification device, resulting in a decrease in the denitrification efficiency and poor overall effect. Accordingly, the present invention proposes a flue dust cleaning device for a power plant; the above patent can prove the defects of the prior art.

[0004] Therefore, we have made improvements to this and proposed a flue dust cleaning device for a power plant. Summary of the invention

[0005] The purpose of the present invention is to solve the current problem that dust and moisture in the flue combine to form cement-like dirt that solidifies in the pipe and is difficult to remove. This application arranges a cleaning component to cause a crushing steel needle to move up and down and back and forth when encountering solidified dust, thereby impacting and crushing the dust, thereby removing the solidified dust inside the flue.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a flue dust cleaning device for a power plant to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A flue dust cleaning device for a power plant comprises a flue body, wherein a reciprocating screw rod is arranged in the flue body; a dust cleaning assembly is arranged between the outer wall of the reciprocating screw rod and the inner wall of the flue body, the dust cleaning assembly comprises a magnetic sleeve slidably mounted on the outer wall of the reciprocating screw rod, a plurality of connecting rods are mounted in an array on the outer wall of the magnetic sleeve, a rotating ring is fixedly mounted on the ends of the plurality of connecting rods, an assembly ring is mounted on the outer wall of the rotating ring in a clamping and rotating manner, two L-shaped rods are symmetrically mounted on the outer wall of the connecting rod, the outer walls of the ends of the two L-shaped rods are respectively fitted with the upper and lower outer walls of the assembly ring, and the outer wall array of the assembly ring is symmetrically mounted There are multiple assembly blocks, and reset springs are fixedly installed between the outer walls of the multiple assembly blocks and the inside of the assembly ring. Multiple crushing steel needles are installed in an array on the outer wall of the assembly block. A pressure sensor is fixedly installed inside the assembly block, and compression springs are fixedly installed between the outer wall of the pressure sensor and the bottom of the crushing steel needle. The L-shaped rod and the outer wall of the assembly block are both provided with wedge surfaces, and the L-shaped rod and the wedge surface of the assembly block can form abutment; a switching component is provided between the magnetic sleeve and the reciprocating screw rod, and the switching component can switch the threaded clamping design of the magnetic sleeve and the reciprocating screw rod to a synchronous rotation design.

[0009] As the preferred technical solution of the present application, the switching assembly includes a strong magnetic block slidably installed inside the reciprocating screw, the strong magnetic block and the reciprocating screw are designed to rotate synchronously, and the strong magnetic block and the magnetic sleeve are designed to be magnetically attracted.

[0010] As a preferred technical solution of the present application, a two-phase electric cylinder is fixedly installed in the end of the connecting rod, a threaded block is rotatably installed on one output end of the two-phase electric cylinder, and a U-shaped rod is fixedly installed on the other output end of the two-phase electric cylinder.

[0011] As the preferred technical solution of the present application, the threaded block and the reciprocating screw are designed to mesh, docking blocks are fixedly installed at both ends of the U-shaped rod, and a plurality of docking grooves are symmetrically arrayed on the inner circle and outer wall of the assembly ring. The docking grooves can form a snap-on design with the docking blocks, and the pressure sensor and the two-phase electric cylinder are electrically connected.

[0012] As a preferred technical solution of the present application, a shaving assembly is provided on the outer wall of the assembly block. The shaving assembly includes a slide groove opened on the outer wall of the assembly block, a T-block slidably installed in the slide groove, and a scraper is fixedly installed on the end of the T-block.

[0013] As the preferred technical solution of the present application, the scraper is of inclined design, the blade surface of the scraper fits against the inner wall of the flue body, and a telescopic spring is fixedly installed between the outer wall of the T-block and the inner wall of the slide groove.

[0014] As the preferred technical solution of the present application, two piston rods are symmetrically installed on the outer wall of the scraper, a plurality of through grooves are arranged in an array on the outer wall of the assembly ring, the piston rods are located in the through grooves, and a rubber wedge block is fixedly installed on the end of the piston rod.

[0015] As a preferred technical solution of the present application, a plurality of grooves are provided in an array on the outer wall of the outer circle of the rotating ring, and the rubber wedge blocks and the grooves can form an abutment design.

[0016] As a preferred technical solution of the present application, an induced draft fan is fixedly installed on the top of the flue body, the end of the reciprocating screw is fixedly connected to the bottom of the induced draft fan, and the induced draft fan can synchronously drive the reciprocating screw to rotate.

[0017] As the preferred technical solution of the present application, multiple rubber rods are installed in an array on the upper and lower outer walls of the magnetic sleeve, rubber balls are fixedly installed on the ends of the rubber rods, the outer walls of the rubber balls are designed to fit the outer walls of the reciprocating screw rods, and a cover is fixedly installed on the top of the induced draft fan.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the scheme of this application:

[0020] 1. In order to solve the problem in the prior art that dust in the flue combines with moisture to form cement-like dirt that solidifies in the pipe and is difficult to remove, the present application uses the cleaning component to utilize the up and down displacement of the assembly ring. When dirt is generated, it will contact the crushing steel needle, so that the pressure sensor receives a pressure signal and triggers the two-phase electric cylinder, so that the assembly ring cannot be displaced up and down and the internal rotating ring rotates. The wedge-shaped surfaces respectively provided by the L-shaped rod and the assembly block can form abutment, so that the assembly block can be displaced up and down, driving the crushing steel to continuously impact the dirt until it is broken and falls off, thereby achieving the effect of crushing and cleaning the stubborn dirt generated inside the flue;

[0021] 2. In order to solve the problem of poor cleaning effect in the prior art, the present application uses a scraper to continuously scrape and clean the inner wall of the flue during the up and down displacement of the assembly ring through the shaving assembly. When the broken steel needle encounters dust, the scraper can be synchronously displaced up and down. The rubber wedge block provided at the end of the piston rod is engaged with the groove. Under the continuous rotation of the rotating ring, the scraper is vibrated while continuously displacing up and down, thereby improving the cleaning effect of the inside of the flue.

[0022] 3. A plurality of rubber rods are fixedly installed on the upper and lower sides of the magnetic sleeve, and a rubber ball is fixedly installed on the end of the rubber rod. The outer wall of the rubber ball fits with the outer wall of the reciprocating screw. When the magnetic sleeve is displaced up and down or rotated freely, the rubber ball can contact the threaded groove on the outer wall of the reciprocating screw, so that the reciprocating screw can generate a certain vibration, which solves the problem in the prior art that the dust in the flue is adsorbed on the outer wall of the reciprocating screw, affecting the operation of the cleaning component and the shaving component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic diagram of the structure of the flue dust cleaning device of a power plant provided for this application;

[0024] Figure 2 A schematic diagram of the structure of the ash cleaning components of the flue ash cleaning device of a power plant provided for this application;

[0025] Figure 3 The power plant flue dust cleaning device provided for this application Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 A schematic diagram of the internal structure of the ash cleaning component of the flue ash cleaning device of a power plant provided for this application;

[0027] Figure 5 The power plant flue dust cleaning device provided for this application Figure 4 The enlarged structural diagram at B in the middle;

[0028] Figure 6 The power plant flue dust cleaning device provided for this application Figure 4 The enlarged structural diagram at C in the middle;

[0029] Figure 7 A schematic diagram of the explosion structure of the cleaning component of the flue cleaning device of a power plant provided for this application;

[0030] Figure 8 The power plant flue dust cleaning device provided for this application Figure 7 Enlarged structural diagram at D in the middle.

[0031] Indicated in the figure:

[0032] 1. Flue body; 101. induced draft fan; 102. cover; 103. reciprocating screw rod;

[0033] 2. Dust removal assembly; 201. Magnetic sleeve; 202. Connecting rod; 203. Rotating ring; 204. Assembly ring; 205. L-shaped rod; 206. Assembly block; 207. Reset spring; 208. Crushing steel needle; 209. Compression spring; 210. Pressure sensor; 211. Rubber rod; 212. Rubber ball;

[0034] 3. Shaving assembly; 301. T-block; 302. scraper; 303. telescopic spring; 304. piston rod; 305. rubber wedge block; 306. groove; 307. through groove; 308. slide groove;

[0035] 4. Switching assembly; 401. Strong magnetic block; 402. Dual-phase electric cylinder; 403. Threaded block; 404. U-shaped rod; 405. Docking block; 406. Docking groove. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0037] As described in the background art, in order to solve the problem that dust in the flue combines with moisture to form cement-like dirt that solidifies in the pipe and is difficult to remove, it is difficult to remove it with a simple brush or scraper.

[0038] In order to solve this technical problem, the present invention provides a flue dust cleaning device for a power plant, which is applied to flue cleaning.

[0039] Specifically, please refer to Figure 1-8 , the flue dust cleaning device of the power plant specifically includes:

[0040] A flue body 1 is provided with a reciprocating screw rod 103 in the flue body 1; a cleaning assembly 2 is provided between the outer wall of the reciprocating screw rod 103 and the inner wall of the flue body 1, and the cleaning assembly 2 comprises a magnetic sleeve 201 which is slidably mounted on the outer wall of the reciprocating screw rod 103, a plurality of connecting rods 202 are mounted in an array on the outer wall of the magnetic sleeve 201, a rotating ring 203 is fixedly mounted on the ends of the plurality of connecting rods 202, an assembly ring 204 is rotatably mounted on the outer wall of the rotating ring 203, two L-shaped rods 205 are symmetrically mounted on the outer wall of the connecting rod 202, and the outer walls of the ends of the two L-shaped rods 205 are respectively connected to the upper and lower outer walls of the assembly ring 204. The outer wall array of the assembly ring 204 is symmetrically mounted with multiple assembly blocks 206, and a return spring 207 is fixedly mounted between the outer walls of the multiple assembly blocks 206 and the inside of the assembly ring 204. A plurality of crushing steel needles 208 are installed in the outer wall array of the assembly block 206, and a pressure sensor 210 is fixedly mounted inside the assembly block 206, and a compression spring 209 is fixedly mounted between the outer wall of the pressure sensor 210 and the bottom of the crushing steel needle 208. The L-shaped rod 205 and the outer wall of the assembly block 206 are both provided with a wedge-shaped surface, and the L-shaped rod 205 and the wedge-shaped surface of the assembly block 206 can form an abutment;

[0041] A switching assembly 4 is provided between the magnetic sleeve 201 and the reciprocating screw rod 103 , and the switching assembly 4 can switch the threaded clamping design of the magnetic sleeve 201 and the reciprocating screw rod 103 to a synchronous rotation design.

[0042] The power plant flue dust cleaning device provided by the present invention is to solve the problem that dust in the flue combines with moisture to form cement-like dirt that solidifies in the pipe and is difficult to remove by simple brushes and scrapers. The present application sets a cleaning component 2 to utilize the rotation of the reciprocating screw 103 to drive the magnetic sleeve 201 to move back and forth up and down when it is in a meshing state with the reciprocating screw 103, thereby driving the assembly ring 204 to move up and down, and then driving multiple assembly blocks 206 to move up and down. When solidified dirt is generated inside the flue body 1, the crushing steel needle 208 set on the assembly block 206 will contact the dirt, thereby causing the crushing steel needle 208 to press down, and the pressure generated by the compression spring 209 is transmitted to the pressure sensor 210, thereby triggering the switching component 4. Under the action of the switching component 4, the meshing of the magnetic sleeve 201 and the reciprocating screw 103 is switched to be able to rotate synchronously, thereby enabling the magnetic sleeve 201 to rotate, driving the connecting rod 202 to rotate, and then causing the L on the connecting rod 202 to rotate. The L-shaped rod 205 rotates on the outer wall of the assembly ring 204, and the beveled surfaces respectively arranged on the L-shaped rod 205 and the assembly block 206 can form abutment, so that the assembly block 206 can be displaced. After the L-shaped rod 205 is displaced, the assembly block 206 is reset under the action of the reset spring 207, thereby driving the crushing steel needle 208 to hit the dust. Through multiple reciprocating collisions, the dust formed inside the flue body 1 can be crushed and removed. Through the elastic action of the reset spring 207 and the compression spring 209, the damage to the flue body 1 caused by the crushing steel needle 208 when crushing the dust can be weakened. When the dust is crushed and removed, the pressure sensor 210 does not receive a pressure signal, thereby triggering the switching component 4 again, so that the synchronous rotation of the magnetic sleeve 201 and the reciprocating screw rod 103 is switched to a meshing design, and then the assembly ring 204 can be driven to move back and forth up and down again, thereby realizing a large-area dust cleaning process inside the flue body 1.

[0043] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] Example 1, please refer to Figure 1-6A flue dust cleaning device for a power plant comprises a flue body 1, in which a reciprocating screw rod 103 is arranged; a dust cleaning assembly 2 is arranged between the outer wall of the reciprocating screw rod 103 and the inner wall of the flue body 1, and the dust cleaning assembly 2 comprises a magnetic sleeve 201 which is slidably mounted on the outer wall of the reciprocating screw rod 103, a plurality of connecting rods 202 are arranged in an array on the outer wall of the magnetic sleeve 201, a rotating ring 203 is fixedly mounted on the ends of the plurality of connecting rods 202, an assembly ring 204 is rotatably mounted on the outer wall of the rotating ring 203, two L-shaped rods 205 are symmetrically mounted on the outer wall of the connecting rod 202, and the outer walls of the ends of the two L-shaped rods 205 are respectively engaged with the assembly ring 204. The upper and lower outer walls of the assembly ring 204 are fitted together, and a plurality of assembly blocks 206 are symmetrically installed in an outer wall array of the assembly ring 204. A return spring 207 is fixedly installed between the outer walls of the plurality of assembly blocks 206 and the inside of the assembly ring 204. A plurality of crushing steel needles 208 are installed in an outer wall array of the assembly block 206. A pressure sensor 210 is fixedly installed inside the assembly block 206. A compression spring 209 is fixedly installed between the outer wall of the pressure sensor 210 and the bottom of the crushing steel needle 208. The L-shaped rod 205 and the outer wall of the assembly block 206 are both provided with a wedge-shaped surface, and the L-shaped rod 205 and the wedge-shaped surface of the assembly block 206 can form an abutment;

[0047] A switching assembly 4 is provided between the magnetic sleeve 201 and the reciprocating screw rod 103, and the switching assembly 4 can switch the threaded clamping design of the magnetic sleeve 201 and the reciprocating screw rod 103 to a synchronous rotation design;

[0048] The switching assembly 4 includes a strong magnetic block 401 slidably installed inside the reciprocating screw rod 103. The strong magnetic block 401 and the reciprocating screw rod 103 are designed to rotate synchronously, and the strong magnetic block 401 and the magnetic sleeve 201 are designed to be magnetically attracted.

[0049] A two-phase electric cylinder 402 is fixedly installed in the end of the connecting rod 202, a threaded block 403 is rotatably installed at one output end of the two-phase electric cylinder 402, and a U-shaped rod 404 is fixedly installed at the other output end of the two-phase electric cylinder 402;

[0050] The threaded block 403 and the reciprocating screw rod 103 are designed to mesh, and docking blocks 405 are fixedly installed at both ends of the U-shaped rod 404. The inner circle and outer wall of the assembly ring 204 are symmetrically arrayed with multiple docking grooves 406, which can form a snap-on design with the docking block 405, and the pressure sensor 210 is electrically connected to the two-phase electric cylinder 402.

[0051] In order to solve the problem that the dust in the flue combines with moisture to form cement-like dirt that solidifies in the pipe and is difficult to remove with a simple brush and scraper, the present application sets a cleaning component 2 to utilize the rotation of the reciprocating screw 103 to drive the magnetic sleeve 201 to move back and forth up and down when it is in a meshing state with the magnetic sleeve, thereby driving the assembly ring 204 to move up and down, and then driving multiple assembly blocks 206 to move up and down. When solidified dirt is generated inside the flue body 1, the crushing steel needle 208 set on the assembly block 206 will contact the dirt, thereby causing the crushing steel needle 208 to be pressed down, and the pressure generated by the compression spring 209 is transmitted to the pressure sensor 210, thereby triggering the switching component 4. Under the action of the switching component 4, the threaded connection between the magnetic sleeve 201 and the reciprocating screw 103 is switched to be able to rotate synchronously, thereby enabling the magnetic sleeve 201 to rotate, driving the connecting rod 202 to rotate, and then causing the L-shaped rod 205 on the connecting rod 202 to rotate in the assembly The ring 204 rotates on the outer wall, and abutment can be formed through the chamfers respectively arranged on the L-shaped rod 205 and the assembly block 206, so that the assembly block 206 can be displaced. After the L-shaped rod 205 is displaced, the assembly block 206 is reset under the action of the reset spring 207, thereby driving the crushing steel needle 208 to hit the dust. Through multiple reciprocating collisions, the dust formed inside the flue body 1 can be crushed and removed. Through the elastic action of the reset spring 207 and the compression spring 209, the damage to the flue body 1 caused by the crushing steel needle 208 when crushing the dust can be weakened. When the dust is crushed and falls off, the pressure sensor 210 does not receive a pressure signal, thereby triggering the switching component 4 again, so that the synchronous rotation of the magnetic sleeve 201 and the reciprocating screw rod 103 is switched to a threaded clamping design, and then the assembly ring 204 can be driven to move back and forth up and down again, thereby realizing a large-area dust cleaning process inside the flue body 1.

[0052] Specifically, through the electrical connection between the pressure sensor 210 and the two-phase electric cylinder 402, when the pressure sensor 210 receives the pressure signal, the two output ends of the two-phase electric cylinder 402 can work synchronously, so that the threaded block 403 at one end is displaced, thereby releasing the threaded connection between the magnetic sleeve 201 and the reciprocating screw 103, and at the same time, the U-shaped rod 404 at the other end is displaced, driving the docking block 405 at its end to be displaced, thereby releasing the connection between the docking block 405 and the docking groove 406, so that the rotating ring 203 can rotate freely, and the strong magnetic block 401 inside the reciprocating screw 103 is designed to rotate synchronously, so that the rotation of the reciprocating screw 103 can drive the strong magnetic block 401 to rotate. Under the magnetic attraction of block 401 and magnetic sleeve 201, the magnetic sleeve 201 rotates synchronously, and then the L-shaped rod 205 on the connecting rod 202 rotates, thereby realizing the up and down displacement of the assembly block 206, and the dust can be crushed by the crushing steel needle 208. When the pressure sensor 210 does not receive the pressure signal, the two-phase electric cylinder 402 is triggered again to displace the threaded block 403 and the U-shaped rod 404, so that the magnetic sleeve 201 and the reciprocating screw rod 103 form a threaded connection again, and the docking block 405 and the docking groove 406 form a card connection, so that the rotating ring 203 and the assembly ring 204 are fixed, and under the rotation of the reciprocating screw rod 103, the magnetic sleeve 201 can move back and forth up and down.

[0053] Example 2 further optimizes the power plant flue dust cleaning device provided in Example 1. Specifically, Figure 7 , Figure 8 As shown, the outer wall of the assembly block 206 is provided with a shaving assembly 3, and the shaving assembly 3 includes a slide groove 308 opened on the outer wall of the assembly block 206, a T-shaped block 301 slidably installed in the slide groove 308, and a scraper 302 is fixedly installed at the end of the T-shaped block 301;

[0054] The scraper 302 is of inclined design, and the blade surface of the scraper 302 is in contact with the inner wall of the flue body 1. A telescopic spring 303 is fixedly installed between the outer wall of the T-block 301 and the inner wall of the slide groove 308.

[0055] Two piston rods 304 are symmetrically mounted on the outer wall of the scraper 302. A plurality of through grooves 307 are arranged in an array on the outer wall of the assembly ring 204. The piston rods 304 are located in the through grooves 307. A rubber wedge block 305 is fixedly mounted on the end of the piston rod 304.

[0056] The outer wall of the rotating ring 203 is provided with a plurality of grooves 306 in an array, and the rubber wedge block 305 and the grooves 306 can form an abutment design;

[0057] An induced draft fan 101 is fixedly installed on the top of the flue body 1, and the end of the reciprocating screw rod 103 is fixedly connected to the bottom of the induced draft fan 101. The induced draft fan 101 can synchronously drive the reciprocating screw rod 103 to rotate.

[0058] By providing a slide groove 308 at the bottom of the assembly block 206, the T-block 301 arranged in the slide groove 308, under the action of the telescopic spring 303, makes the blade surface of the scraper 302 always fit with the inner wall of the flue body 1. During the up and down displacement of the assembly ring 204, the scraper 302 can scrape and clean the inner wall of the flue body 1. The oblique cutting design of the scraper 302 can make the assembly ring 204 unable to rotate inside the flue body 1, so that the magnetic sleeve 201 can move up and down when it is threadedly engaged with the reciprocating screw rod 103. When the crushing steel needle 208 contacts the dust and dirt and starts to crush it, the up and down displacement of the assembly block 206 can synchronously drive the scraper 302 to move up and down. At the same time, under the action of the piston rod 304, the abutment design of the rubber wedge block 305 and the groove 306 is made, and the rotation of the rotating ring 203 is utilized, so that the scraper vibrates while moving up and down, thereby achieving the effect of deeply cleaning the inner wall of the flue body 1.

[0059] Example 3, the power plant flue dust cleaning device provided in Example 1 or 2 is further optimized, specifically, as follows Figure 4 , Figure 5 As shown, multiple rubber rods 211 are installed in an array on the upper and lower outer walls of the magnetic sleeve 201, and rubber balls 212 are fixedly installed on the ends of the rubber rods 211. The outer wall of the rubber ball 212 is designed to fit the outer wall of the reciprocating screw 103, and the cover 102 is fixedly installed on the top of the induced draft fan 101.

[0060] The induced draft fan 101 is fixedly installed on the top of the flue body 1. When the power plant is working, the induced draft fan 101 is started, thereby driving the continuous rotation of the reciprocating screw 103, so as to realize the continuous operation of the cleaning component 2 and the shaving component 3, and can continuously clean the interior of the flue body 1. A plurality of rubber rods 211 are installed in an array on the upper and lower outer walls of the magnetic sleeve 201. A rubber ball 212 is fixedly installed on the end of the rubber rod 211. The outer wall of the rubber ball 212 fits with the outer wall of the reciprocating screw 103. When the magnetic sleeve 201 is displaced up and down or rotated, the rubber ball 212 can be synchronously driven to move up and down or rotate. When the rubber ball 212 is displaced up and down or rotated, it can collide with the thread groove of the reciprocating screw 103 to generate vibration, thereby preventing the dust in the flue body 1 from being adsorbed on the outer wall of the reciprocating screw 103 when the power plant is working, thereby affecting the operation of the cleaning component 2 and the shaving component 3.

[0061] The use process of the power plant flue dust cleaning device provided by the present invention is as follows:

[0062] In the initial state, the two-phase electric cylinder 402 is used to make the threaded block 403 and the reciprocating screw rod 103 be designed as a threaded clamping connection, and the docking block 405 is clamped with the docking groove 406. The operation of the induced draft fan 101 drives the reciprocating screw rod 103 to rotate, so that the magnetic sleeve 201 moves up and down, and at the same time drives the assembly ring 204 to move up and down. The scraper 302 can continuously scrape and clean the inside of the flue body 1. When dust and dirt are generated inside the flue body 1, the upward or downward movement of the assembly ring 204 can make the crushing steel needle 208 on one side contact with the dust and dirt, so that the crushing steel needle 208 The needle 208 generates pressure. When the pressure sensor 210 receives the pressure signal, the two-phase electric cylinder 402 is triggered to drive the two output ends to move, so that the threaded clamping connection between the threaded block 403 and the reciprocating screw rod 103 is released, and the clamping connection between the docking block 405 and the docking groove 406 is released, so that the rotating ring 203 can rotate freely inside the assembly ring 204. Through the magnetic attraction of the strong magnetic block 401 and the magnetic sleeve 201, the rotation of the reciprocating screw rod 103 can drive the magnetic sleeve 201 to rotate, thereby driving the L-shaped rod 205 to rotate. The wedge-shaped surfaces respectively provided on the L-shaped rod 205 and the assembly block 206 can The assembly block 206 is able to form an abutment, thereby enabling the assembly block 206 to move downward. After the L-shaped rod 205 passes, the assembly block 206 is reset under the action of the reset spring 207, so that the assembly block 206 drives the crushing steel needle 208 to move back and forth, and has an impact and crushing effect on the dust, thereby achieving the effect of crushing and cleaning the solidified dust in the flue body 1. At the same time, the scraper 302 is synchronously displaced up and down under the action of the assembly block 206, and under the continuous rotation of the rotating ring 203, the rubber wedge block 305 arranged at the end of the piston rod 304 can form a groove with the outer wall of the rotating ring 203. The scraper 302 is clamped, so that it can vibrate while moving up and down, so as to achieve the effect of deep cleaning the inside of the flue body 1. When the pressure sensor 210 does not receive the pressure signal, the two-phase electric cylinder 402 is triggered again, so that the threaded block 403 and the reciprocating screw rod 103 are threadedly clamped, and the docking block 405 and the docking groove 406 are clamped, so that the magnetic sleeve 201 cannot rotate freely. Under the threaded clamping of the threaded block 403 and the reciprocating screw rod 103, the magnetic sleeve 201, the connecting rod 202, the rotating ring 203 and the assembly ring 204 are synchronously moved up and down.

[0063] A plurality of rubber rods 211 are installed in an array on the outer walls of the upper and lower sides of the magnetic sleeve 201, and a rubber ball 212 is fixedly installed on the end of the rubber rod 211. The outer wall of the rubber ball 212 fits with the outer wall of the reciprocating screw 103. When the magnetic sleeve 201 is displaced up and down or rotated, it can synchronously drive the rubber ball 212 to move up and down or rotate. When the rubber ball 212 is displaced up and down or rotated, it can collide with the thread groove of the reciprocating screw 103 to generate vibration, thereby preventing the dust in the flue body 1 from being adsorbed on the outer wall of the reciprocating screw 103 when the power plant is working, thereby affecting the work of the cleaning component 2 and the shaving component 3.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A flue dust cleaning device for a power plant, characterized in that: The invention comprises a flue body (1), wherein a reciprocating screw rod (103) is arranged inside the flue body (1); a cleaning assembly (2) is arranged between the outer wall of the reciprocating screw rod (103) and the inner wall of the flue body (1); the cleaning assembly (2) comprises a magnetic sleeve (201) slidably mounted on the outer wall of the reciprocating screw rod (103); a plurality of connecting rods (202) are mounted in an array on the outer wall of the magnetic sleeve (201); rotating rings (203) are fixedly mounted on the ends of the plurality of connecting rods (202); an assembly ring (204) is rotatably mounted on the outer wall of the rotating ring (203); two L-shaped rods (205) are symmetrically mounted on the outer wall of the connecting rod (202); the outer walls of the ends of the two L-shaped rods (205) are respectively engaged with the assembly ring (204); ) are fitted with the upper and lower outer walls of the assembly ring (204); a plurality of assembly blocks (206) are symmetrically mounted in an outer wall array of the assembly ring (204); a return spring (207) is fixedly mounted between the outer walls of the plurality of assembly blocks (206) and the inside of the assembly ring (204); a plurality of crushing steel needles (208) are mounted in an outer wall array of the assembly block (206); a pressure sensor (210) is fixedly mounted inside the assembly block (206); a compression spring (209) is fixedly mounted between the outer wall of the pressure sensor (210) and the bottom of the crushing steel needle (208); the outer walls of the L-shaped rod (205) and the assembly block (206) are both provided with wedge-shaped surfaces, and the L-shaped rod (205) and the wedge-shaped surfaces of the assembly block (206) can form abutment; A switching component (4) is provided between the magnetic sleeve (201) and the reciprocating screw rod (103), and the switching component (4) can switch the threaded clamping design of the magnetic sleeve (201) and the reciprocating screw rod (103) to a synchronous rotation design.

2. A power plant flue dust cleaning device according to claim 1, characterized in that: The switching assembly (4) comprises a strong magnetic block (401) slidably mounted inside the reciprocating screw rod (103); the strong magnetic block (401) and the reciprocating screw rod (103) are designed to rotate synchronously; and the strong magnetic block (401) and the magnetic sleeve (201) are designed to be magnetically attracted.

3. A power plant flue dust cleaning device according to claim 2, characterized in that: A two-phase electric cylinder (402) is fixedly installed in the end of the connecting rod (202), a threaded block (403) is rotatably installed on one output end of the two-phase electric cylinder (402), and a U-shaped rod (404) is fixedly installed on the other output end of the two-phase electric cylinder (402).

4. A power plant flue dust cleaning device according to claim 3, characterized in that: The threaded block (403) and the reciprocating screw rod (103) are designed to mesh, and docking blocks (405) are fixedly installed at both ends of the U-shaped rod (404). The inner circle and outer wall of the assembly ring (204) are symmetrically arrayed with multiple docking grooves (406), and the docking grooves (406) can form a snap-fit ​​design with the docking block (405). The pressure sensor (210) and the two-phase electric cylinder (402) are electrically connected.

5. A power plant flue dust cleaning device according to claim 4, characterized in that: The outer wall of the assembly block (206) is provided with a shaving assembly (3), and the shaving assembly (3) comprises a slide groove (308) provided on the outer wall of the assembly block (206), a T-shaped block (301) slidably mounted in the slide groove (308), and a scraper (302) is fixedly mounted at the end of the T-shaped block (301).

6. A power plant flue dust cleaning device according to claim 5, characterized in that: The scraper (302) is of inclined design, the blade surface of the scraper (302) fits the inner wall of the flue body (1), and a telescopic spring (303) is fixedly installed between the outer wall of the T-block (301) and the inner wall of the slide groove (308).

7. A power plant flue dust cleaning device according to claim 6, characterized in that: Two piston rods (304) are symmetrically mounted on the outer wall of the scraper (302); a plurality of through grooves (307) are arranged in an array on the outer wall of the assembly ring (204); the piston rods (304) are located in the through grooves (307); and a rubber wedge block (305) is fixedly mounted on the end of the piston rod (304).

8. A power plant flue dust cleaning device according to claim 7, characterized in that: The outer wall of the rotating ring (203) is provided with a plurality of grooves (306) in an array, and the rubber wedge block (305) and the grooves (306) can form an abutment design.

9. A power plant flue dust cleaning device according to claim 1, characterized in that: An induced draft fan (101) is fixedly mounted on the top of the flue body (1), the end of the reciprocating screw rod (103) is fixedly connected to the bottom of the induced draft fan (101), and the induced draft fan (101) can synchronously drive the reciprocating screw rod (103) to rotate.

10. The power plant flue dust cleaning device according to claim 1, characterized in that: A plurality of rubber rods (211) are installed in an array on both upper and lower outer walls of the magnetic sleeve (201); a rubber ball (212) is fixedly installed at the end of the rubber rod (211); the outer wall of the rubber ball (212) is designed to fit the outer wall of the reciprocating screw rod (103); and a cover shell (102) is fixedly installed on the top of the induced draft fan (101).

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