Energy-saving steam boiler and control method thereof

Abstract

The application discloses an energy-saving steam boiler and a control method thereof, and particularly relates to the technical field of industrial boilers, which comprises a furnace body, a furnace, a burner, a combustion chamber, a first flue, a second flue, and further comprises a scraping mechanism and an ash removal mechanism. Through the arrangement of the ash removal mechanism, on the one hand, the cleaning effect of the smoke dust and coal cinder in the furnace, the first flue and the second flue can be improved by cooperating with the scraping mechanism, so that the excessive accumulation of the smoke dust and the coal cinder is prevented, the heat exchange effect of the equipment is improved, and the energy consumption is saved; on the other hand, the smoke dust and the coal cinder can fall to the bottom of the storage box only after being cooled for a period of time, the smoke dust and the coal cinder can be collected at any time during the working process of the steam boiler, and the scalding during manual collection can be avoided, so that the working efficiency and the safety of the equipment are further improved.

Description

Technical Field

[0001] This invention relates to the field of industrial boiler technology, and more specifically, to an energy-saving steam boiler and its control method. Background Technology

[0002] A steam boiler refers to boiler equipment that produces steam. It is classified as special equipment, and its design, production, delivery, and installation must be subject to inspection by the national technical supervision department. Users need to obtain a boiler operating certificate to operate the boiler. Unlike atmospheric pressure boilers, steam boilers must be accompanied by boiler documentation upon delivery, which includes boiler body drawings, installation drawings, instrument and valve drawings, piping drawings, and a certificate of conformity.

[0003] Chinese patent application number CN202410988965.X discloses a steam boiler, belonging to the field of industrial boiler technology. The invention includes a furnace chamber, flue gas duct, furnace body, scraper, drive screw, reverse screw structure, and exhaust channel. The furnace body is equipped with a second flue gas chamber, a second baffle, an evaporation chamber, a first baffle, and a first flue gas chamber. The furnace body has an exhaust port. The drive screw passes through the evaporation chamber and is helically connected to the scraper. The reverse screw structure includes a connecting cylinder, with both ends connected to the second flue gas chamber and the evaporation chamber respectively. A sliding block is guided and slidably mounted inside the connecting cylinder, and a threaded rod is threaded through the sliding block. A piston is slidably mounted inside the exhaust channel, and a connecting shaft is mounted on the piston. A sealing plate assembly is fixed to the right end of the connecting shaft, and a first elastic element is press-fitted between the piston and the right end of the exhaust channel. This invention has lower equipment cost, is easier to transport, and can effectively remove scale.

[0004] Although the above invention can effectively remove scale on the flue and clean soot and ash through airflow, the soot and ash that gradually accumulate in the flue of the steam boiler cannot be completely removed by airflow alone. The soot and ash will still form a heat insulation layer on the inner wall of the pipe, which will reduce heat transfer efficiency, increase fuel consumption, and increase operating costs. At the same time, manual cleaning is more troublesome and requires shutdown for cleaning, which seriously affects work efficiency.

[0005] This invention provides an energy-saving steam boiler and its control method, aiming to solve the problems that soot and slag form a heat insulation layer on the inner wall of the pipe, which reduces heat transfer efficiency, increases operating costs, and is troublesome to clean manually, seriously affecting work efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide an energy-saving steam boiler and its control method to solve the problems mentioned in the background art, such as the formation of a heat insulation layer on the inner wall of the pipe by soot and slag, which reduces heat transfer efficiency, increases operating costs, and is troublesome to clean manually, seriously affecting work efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving steam boiler, comprising a furnace body, a furnace shell, a burner, a combustion chamber, a first flue, a second flue, an evaporation chamber, a second flue gas chamber, and a flue gas outlet, and further comprising:

[0008] A scraping mechanism is used to remove scale from the outer walls of the furnace, the first flue, and the second flue by reciprocating motion;

[0009] A dust removal mechanism is used to generate vibrations during the movement of the scraping mechanism to strip away soot and slag.

[0010] Storage components are used to collect stripped soot and slag and to provide cooling and isolation.

[0011] Preferably, the scraping mechanism includes:

[0012] The scraper has through holes through which the furnace liner, the first flue and the second flue pass;

[0013] A reciprocating threaded rod is threadedly connected to the scraper to drive its reciprocating movement, and a second gear is fixed at its end.

[0014] Preferably, the dust removal mechanism includes:

[0015] The mounting plate is hinged to the mounting groove of the scraper and reset by a second elastic element disposed between its top and the mounting groove;

[0016] A lever, fixed inside the furnace body, is used to trigger the deflection of the mounting plate;

[0017] The striking element is fixedly connected to the mounting plate via a third elastic element and is used to strike the scraper when the mounting plate is reset.

[0018] Preferably, the storage component includes:

[0019] A storage box is located at the bottom of the furnace body and communicates with the second flue gas chamber through an ash outlet at the bottom of the furnace body;

[0020] A partition plate divides the storage box into upper and lower chambers, and provides a communication opening;

[0021] The first and second sealing plugs are fixedly connected by a fixing rod to alternately seal the ash outlet and the connecting port.

[0022] Preferably, the scraping mechanism further includes:

[0023] An exhaust passage, which is internally sealed and slidably connected to a piston, and a first elastic element is connected between the piston and the piston.

[0024] The rotating rod is rotatably connected to the piston. One end is fixed with a first gear, which meshes with the second gear when the piston moves. The other end passes through the piston and is fixed with a rotating blade, which drives the rotating rod to rotate through the steam flow in the exhaust channel.

[0025] Preferably, the dust removal mechanism further includes:

[0026] A sealing plate is slidably disposed at the smoke exhaust port, used to increase pressure by sealing the smoke exhaust port;

[0027] A pressure relief valve, located on the sealing plate, is used to release excess flue gas pressure when the exhaust port is closed;

[0028] A connecting rod is used to link the sealing plate with the rotating rod.

[0029] Preferably, it further includes a clamping assembly, the clamping assembly comprising:

[0030] Mounting box, fixed to the side wall of the furnace body;

[0031] The friction block, controlled by the fifth elastic element and the adjusting element, is used to lock the guide plate.

[0032] Preferably, a fourth elastic element is provided between the first sealing plug and the isolation plate for automatically opening and closing the ash outlet under the action of flue gas pressure.

[0033] Preferably, a support member is fixedly connected inside the furnace body and is arranged parallel to the reciprocating threaded rod, and the paddles are evenly distributed along the support member.

[0034] A control method for an energy-saving steam boiler includes the following steps:

[0035] S1. The piston moves due to pressure changes in the evaporation chamber, driving the scraping mechanism to operate;

[0036] S2. The scraper moves back and forth, causing the dust removal mechanism to vibrate due to the triggering of the paddle.

[0037] S3. The exhaust port is periodically sealed by the sealing plate to increase the pressure and cause the smoke and dust to fall into the storage box;

[0038] S4. In cold water condition, the guide plate is locked by adjusting the component to prevent malfunction.

[0039] The technical effects and advantages of this invention are as follows:

[0040] This invention, through the design of the ash-removing mechanism, allows the scraper to drive the mounting plate into contact with the lever during its left-right movement. This forces the mounting plate to stretch the second elastic element and deflect around the support rod. After the bottom of the mounting plate loses contact with the lever, the scraper is struck by the rapid rotation of two striking elements, causing it to vibrate and dislodge the accumulated dust and slag inside the furnace, first flue, and second flue. Furthermore, the rapidly released flue gas can impact the dust and slag to the bottom of the first and second flue gas chambers, ultimately collecting them in a storage tank. On one hand, this mechanism, in conjunction with the scraping mechanism, improves the cleaning effect of dust and slag in the furnace, first flue, and second flue, preventing excessive accumulation and thus improving the heat exchange efficiency and saving energy. On the other hand, it allows the dust and slag to cool down before falling to the bottom of the storage tank, enabling continuous collection of dust and slag during boiler operation and avoiding burns during manual collection, thereby further improving the equipment's efficiency and safety. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0042] Figure 2 This is a cross-sectional view of the overall internal structure of the present invention.

[0043] Figure 3 For the present invention Figure 2 Enlarged view of the structure of part A.

[0044] Figure 4 This is a schematic diagram of the piston component of the present invention.

[0045] Figure 5 For the present invention Figure 2 Enlarged view of the structure of part B.

[0046] Figure 6 This is a schematic diagram of the mounting plate structure of the present invention.

[0047] Figure 7 This is a schematic diagram of the storage box part of the present invention.

[0048] Figure 8 This is a schematic diagram of the internal structure of the storage box of the present invention.

[0049] Figure 9 This is a schematic diagram of the sealing plate structure of the present invention.

[0050] Figure 10 This is a schematic diagram of the internal structure of the mounting box of the present invention.

[0051] The attached figures are labeled as follows: 1. Furnace body; 11. Furnace chamber; 12. Burner; 13. Combustion chamber; 14. First flue; 15. Second flue; 16. First baffle; 17. Second baffle; 18. First flue gas chamber; 19. Evaporation chamber; 110. Second flue gas chamber; 111. Steam outlet; 112. Wastewater outlet; 113. Control valve; 114. Exhaust port; 115. Water injection pipe; 2. Scraping mechanism; 21. Scraper; 22. Reciprocating threaded rod; 23. Threaded sleeve; 24. Exhaust passage; 25. Piston; 26. First elastic element; 27. Rotating rod; 28. Rotating blade; 29. ​​First gear; 210. Second gear; 3. Ash removal mechanism; 31. Mounting plate; 32. Mounting groove; 33. Support rod; 34. Second elastic element; 35. Deflection groove; 36. Third elastic element; 37. Striking element; 38. Support element; 39. Paddle; 310. Storage box; 311. Isolation plate; 312. Ash outlet; 313. Connecting port; 314. First sealing plug; 315. Second sealing plug; 316. Fixing rod; 317. Fourth elastic element; 318. Pin plate; 319. Connecting rod; 320. Sealing plate; 321. Guide plate; 322. Mounting box; 323. Extension groove; 324. Limiting groove; 325. Friction block; 326. Fifth elastic element; 327. Adjusting element; 328. Pressure relief valve. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Example 1

[0054] refer to Figures 1 to 10 An energy-saving steam boiler according to an embodiment of the present invention includes a furnace body 1, a furnace shell 11, a burner 12, a combustion chamber 13, a first flue 14, and a second flue 15;

[0055] refer to Figure 1 and Figure 2 The interior of the furnace body 1 is provided with a first partition 16 and a second partition 17. The interior of the furnace body 1 is divided into a first flue gas chamber 18, an evaporation chamber 19 and a second flue gas chamber 110 from left to right along the length direction by the first partition 16 and the second partition 17.

[0056] The furnace body 1 is provided with a steam outlet 111 and a sewage outlet 112 that are connected to the evaporation chamber 19. The steam outlet 111 is provided with a detection instrument and a control valve 113. The detection instrument is used to detect the pressure inside the furnace body 1, and the control valve 113 is used to control the opening and closing of the steam outlet 111. The furnace body 1 is provided with a flue gas outlet 114 that is connected to the second flue gas chamber 110, and the furnace body 1 is provided with a water injection pipe 115 that is connected to the evaporation chamber 19.

[0057] Both the first flue 14 and the second flue 15 are multiple. The combustion chamber 13 is connected to the first flue gas chamber 18 through the multiple first flues 14. The first flue gas chamber 18 is connected to the second flue gas chamber 110 through the multiple second flues 15. The steam boiler is existing technology and will not be described in detail here.

[0058] refer to Figures 2 to 6 It also includes a scraping mechanism 2, which includes a scraper 21 and a reciprocating threaded rod 22. The scraper 21 is provided with a through hole for the furnace liner 11, the first flue 14 and the second flue 15 to pass through. The outer walls of the furnace liner 11, the first flue 14 and the second flue 15 are all in contact with the corresponding through hole.

[0059] The two ends of the reciprocating threaded rod 22 pass through the first partition 16 and the second partition 17 respectively, and are rotatably connected to the first partition 16 and the second partition 17. The reciprocating threaded rod 22 is arranged parallel to the first flue 14 and the second flue 15. A threaded sleeve 23 that can be threadedly connected to the reciprocating threaded rod 22 is fixedly connected to the scraper 21. When the reciprocating threaded rod 22 rotates, it can drive the scraper 21 to move left and right in the furnace body 1 through the threaded sleeve 23.

[0060] An exhaust channel 24 is fixedly connected to the inner wall of the furnace body 1 at the steam outlet 111. One end of the exhaust channel 24 away from the second partition 17 is connected to the evaporation chamber 19, and the other end is sealed. The side of the exhaust channel 24 is connected to the steam outlet 111. A piston 25 is slidably connected to the inside of the exhaust channel 24. A first elastic element 26 is sleeved inside the exhaust channel 24. One end of the first elastic element 26 is connected to the piston 25, and the other end is connected to the side of the exhaust channel 24 near the second partition 17.

[0061] refer to Figure 3 and Figure 4 A rotating rod 27 is rotatably connected to the piston 25. The rotating rod 27 can be rotatably connected to the piston 25 through a structure such as a bearing. One end of the rotating rod 27 passes through the piston 25 and is fixedly connected to a rotating blade 28. The other end of the rotating rod 27 passes through the second partition 17 and is fixedly connected to a first gear 29. One end of the reciprocating threaded rod 22 located inside the second flue gas chamber 110 is fixedly connected to a second gear 210. When the first gear 29 moves to the left, it can mesh with the second gear 210 for transmission.

[0062] In actual operation, water is injected into the evaporation chamber 19 of the furnace body 1 through the water injection pipe 115, and then the burner 12 is turned on to start the boiler. The flue gas generated by combustion passes through the furnace shell 11, combustion chamber 13, first flue 14, first flue gas chamber 18, second flue 15, and second flue gas chamber 110 in sequence and is discharged from the exhaust port 114. The heat generated in the furnace shell 11, first flue 14, and first flue gas chamber 18 is transferred to the evaporation chamber 19 to heat the water. After the water boils, steam is generated. When the steam generated in the furnace body 1 reaches a certain amount and the pressure in the furnace body 1 reaches a certain value, the control valve 113 at the steam outlet 111 controls the steam outlet 111 to open, so that the steam in the furnace body 1 is slowly released. During the steam release process, the water in the furnace body 1 continues to evaporate to generate steam. The amount of steam generated in the furnace body 1 per unit time is balanced with the amount of steam discharged from the steam outlet 111, so that the pressure value in the furnace body 1 can be maintained within a normal range.

[0063] As the boiler is used for a longer period of time, scale will form on the outer walls of the furnace 11, the first flue 14, and the second flue 15, which will increase the wall thickness of the furnace 11, the first flue 14, and the second flue 15. This will reduce the heat transfer efficiency between the furnace 11, the first flue 14, and the second flue 15 and the water, resulting in a slower steam generation rate in the evaporation chamber 19. The amount of steam generated in the evaporation chamber 19 per unit time is less than the amount of steam discharged from the steam outlet 111, which will cause the total amount of steam in the boiler body 1 to decrease continuously, and the pressure in the evaporation chamber 19 to gradually decrease.

[0064] When the pressure inside the evaporation chamber 19 decreases, the first elastic element 26 pushes the piston element 25 to move to the left in the exhaust channel 24, and drives the rotating rod 27 and the first gear 29 to move to the left, so that the first gear 29 moves to mesh with the second gear 210. During the process of steam entering the steam outlet 111 through the exhaust channel 24 and being discharged, the steam blows the rotating blade 7 and drives the rotating rod 27 to drive the first gear 29 to rotate. The first gear 29 transmits power to the second gear 210 through meshing, thereby driving the reciprocating threaded rod 22 to rotate. When the reciprocating threaded rod 22 rotates, it drives the scraper 21 to move left and right in the evaporation chamber 19 through the threaded sleeve 23, thereby scraping off the scale on the furnace shell 11, the first flue 14, and the second flue 15, preventing excessive accumulation of scale.

[0065] After the scale is removed, the pressure in the evaporation chamber 19 gradually increases to the normal range. At this time, the piston 25 compresses the first elastic element 26 to the right under the pressure in the evaporation chamber 19. The first gear 29 and the second gear 210 disengage, the reciprocating threaded rod 22 stops rotating, the scraper 21 stops moving, and the boiler returns to normal working condition.

[0066] Example 2

[0067] Although existing steam boilers can clean soot and ash through airflow, the soot and ash that gradually accumulate in the steam boiler flue cannot be completely removed by airflow alone. The soot and ash will still form a heat insulation layer on the inner wall of the pipe, which will reduce heat transfer efficiency, increase fuel consumption, and increase operating costs. At the same time, manual cleaning is troublesome and requires shutdown for cleaning, which seriously affects work efficiency. Therefore, this embodiment improves the device described in the above embodiment.

[0068] refer to Figures 2 to 10 It also includes a dust removal mechanism 3, which includes a mounting plate 31. A through-type mounting groove 32 is provided on the scraper 21. A support rod 33 is fixedly connected inside the mounting groove 32. The support rod 33 is arranged along the width direction of the furnace body 1. The upper part of the mounting plate 31 is rotatably connected to the support rod 33. A second elastic member 34 is connected between the top of the mounting plate 31 and the top of the mounting groove 32.

[0069] refer to Figure 2 , Figure 5 and Figure 6 The mounting slot 32 has symmetrically arranged through-hole deflection slots 35 on the left and right sides. Both sides of the mounting plate 31 are fixedly connected with striking elements 37 by a third elastic element 36. The two striking elements 37 correspond to the positions of the two deflection slots 35 respectively, and the striking elements 37 can pass through the deflection slots 35.

[0070] A support member 38 is fixedly connected between the first partition 16 and the second partition 17. The support member 38 is located in the deflection groove 35 and is arranged parallel to the reciprocating threaded rod 22. Several evenly distributed paddles 39 are fixedly connected to the top of the support member 38. During the process of the scraper 21 moving left and right in the furnace body 1, the bottom of the mounting plate 31 can contact the paddles 39, which can force the mounting plate 31 to stretch the second elastic member 34 and deflect it around the support rod 33.

[0071] refer to Figure 1 , Figure 7 and Figure 8 It also includes a storage component, which includes a storage box 310. The storage box 310 is fixedly connected to the bottom of the furnace body 1 and located below the second flue gas chamber 110. An isolation plate 311 is fixedly connected inside the storage box 310. An ash outlet 312 connecting the second flue gas chamber 110 and the storage box 310 is opened at the bottom of the furnace body 1. A through-hole 313 is opened on the isolation plate 311.

[0072] Inside the storage box 310, above the isolation plate 311, there is a first sealing plug 314 for sealing the ash outlet 312 and a second sealing plug 315 for sealing the connecting port 313. A fixing rod 316 is fixedly connected between the first sealing plug 314 and the second sealing plug 315. A fourth elastic element 317 is connected between the bottom of the first sealing plug 314 and the isolation plate 311. The inner diameter of the fourth elastic element 317 is larger than the diameter of the connecting port 313. An extension edge for limiting is provided on the side of the first sealing plug 314 and the second sealing plug 315 that are close to each other. A pin plate 318 is slidably connected to the bottom of the storage box 310.

[0073] refer to Figure 3 and Figure 4 The second flue gas chamber 110 is provided with a sealing plate 320 for sealing the flue gas outlet 114. The end of the first gear 29 away from the rotating rod 27 is rotatably connected to the sealing plate 320 through the connecting rod 319. When the first gear 29 moves, it can drive the sealing plate 320 to move. The other end of the sealing plate 320 away from the connecting rod 319 is fixedly connected to the guide plate 321. The other end of the guide plate 321 penetrates the side wall of the furnace body 1 and is slidably connected to the side wall of the furnace body 1. The sealing plate 320 is provided with a pressure relief valve 328 for flue gas flow.

[0074] In actual operation, as the reciprocating threaded rod 22 rotates and drives the scraper 21 to move left and right within the evaporation chamber 19 via the threaded sleeve 23, the scraper 21 will drive the mounting plate 31 to move synchronously. (Refer to...) Figure 5 and Figure 6 During the movement of the mounting plate 31, the bottom can contact the lever 39. The lever 39 can force the mounting plate 31 to stretch the second elastic element 34 and deflect it around the support rod 33. When the bottom of the mounting plate 31 loses contact with the lever 39, the second elastic element 34 will elastically contract and drive the mounting plate 31 to rotate quickly. During the rapid rotation of the mounting plate 31, the two third elastic elements 36 can drive the two striking elements 37 to rotate quickly. During the rapid rotation, the two striking elements 37 can strike the scraper 21, causing the scraper 21 to vibrate. The scraper 21 will transmit the vibration to the furnace 11, the first flue 14 and the second flue 15, causing local vibration at the corresponding positions of the furnace 11, the first flue 14 and the second flue 15, thereby shaking off the accumulated soot and slag inside the furnace 11, the first flue 14 and the second flue 15.

[0075] During the process of the first elastic element 26 pushing the piston element 25 and driving the rotating rod 27 and the first gear 29 to move to the left, the rotating rod 27 can drive the sealing plate 320 to move to the left through the connecting rod 319. During the process of the sealing plate 320 moving to the left, it can block the flue gas outlet 114. After the flue gas outlet 114 is blocked, the pressure in the furnace 11, the first flue gas chamber 18, and the second flue gas chamber 110 will gradually increase. When the pressure in the furnace 11, the first flue gas chamber 18, and the second flue gas chamber 110 is too high, the pressure can open the pressure relief valve 328 to avoid excessive pressure causing safety hazards.

[0076] After the pressure inside the second flue gas chamber 110 increases, it will push the first sealing plug 314 to compress the fourth elastic element 317 to move downward, releasing the seal on the ash outlet 312. At this time, the smoke and slag inside the second flue gas chamber 110 can enter the storage box 310 through the ash outlet 312. During the downward movement of the fourth elastic element 317, it will drive the second sealing plug 315 to move downward simultaneously through the fixing rod 316, sealing the connecting port 313. This alternating sealing and opening prevents the hot smoke and slag on the isolation plate 311 from falling into the bottom of the storage box 310, avoids burns when collecting smoke and slag, and improves equipment safety.

[0077] After the scale is removed, as the piston 25 moves the rotating rod 27 to the right, it will also move the sealing plate 320 to the right via the connecting rod 319. This will release the sealing plate 320 from blocking the flue gas outlet 114. At this time, the flue gas accumulated in the furnace 11, the first flue 14, and the second flue 15 can flow rapidly within a certain period of time. The rapidly flowing flue gas can carry the dust and slag that have been shaken off in the furnace 11, the first flue 14, and the second flue 15 into the first flue gas chamber 18 and the second flue gas chamber 110, and fall to the bottom of the first flue gas chamber 18 and the second flue gas chamber 110. Then, it enters the storage box 310 through the ash outlet 312 for storage. A storage component can also be installed at the bottom of the first flue gas chamber 18 to collect the dust and slag. On the one hand, this can prevent the dust and slag from polluting the environment, and on the other hand, it can prevent the excessive accumulation of dust and slag, improve the heat exchange effect of the equipment, and save energy.

[0078] After the sealing plate 320 releases the blockage on the exhaust port 114, the fourth elastic element 317 will gradually push back the first sealing block 314 to block the ash outlet 312, and the second sealing block 315 will gradually release the blockage on the connecting port 313. After the connecting port 313 is released, the smoke and slag that have cooled down for a period of time will fall to the bottom of the storage box 310, and the smoke and slag can be collected by pulling out the latch plate 318.

[0079] It should be noted that, due to the alternating blocking and opening of the ash outlet 312 and the connecting outlet 313, the hot smoke and ash in the second flue gas chamber 110 will fall to the bottom of the storage box 310 after cooling on the isolation plate 311 for a period of time. This allows for the collection of smoke and ash at any time during the operation of the steam boiler, avoiding burns during manual collection and improving the working efficiency and safety of the equipment.

[0080] exist Figure 5 and Figure 6 The scraper 21 moves from right to left. When the scraper 21 moves from left to right, the paddle 39 can force the mounting plate 31 to stretch the second elastic element 34 and deflect it to the left around the support rod 33. This causes the mounting plate 31 to deflect from the right side of the scraper 21 to the left side inside the mounting groove 32. During the process of deflecting to the left side of the mounting groove 32, the mounting plate 31 will stretch the third elastic element 36, causing the striking element 37 to gradually move into the corresponding deflection groove 35. When the striking element 37 moves into the deflection groove 35, it can pass through the deflection groove 35 and follow the mounting plate 31 to deflect to the left side of the scraper 21. It can then strike the scraper 21 from the left side, thus adapting to the left and right movement of the scraper 21 and completing the striking work.

[0081] In summary, through the arrangement of the dust removal mechanism 3, the scraper 21 can drive the mounting plate 31 to contact the lever 39 during its left and right movement, forcing the mounting plate 31 to stretch the second elastic element 34 and deflect around the support rod 33. After the bottom of the mounting plate 31 loses contact with the lever 39, the scraper 21 is struck by the rapid rotation of the two striking elements 37, causing the scraper 21 to vibrate. This shakes off the accumulated dust and slag inside the furnace liner 11, the first flue 14, and the second flue 15. Furthermore, the rapidly released flue gas can impact the dust and slag into the first flue gas chamber 18 and the second flue gas chamber. The dust and slag at the bottom of the boiler 110 are finally collected in the storage box 310. On the one hand, this can work with the scraping mechanism 2 to improve the cleaning effect of dust and slag on the furnace 11, the first flue 14 and the second flue 15, prevent excessive accumulation of dust and slag, thereby improving the heat exchange effect of the equipment and saving energy. On the other hand, it allows the dust and slag to fall to the bottom of the storage box 310 after a period of cooling. This allows the dust and slag to be collected at any time during the operation of the steam boiler, avoiding burns during manual collection, thereby further improving the working efficiency and safety of the equipment.

[0082] Example 3

[0083] To avoid excessively low pressure in the cold water state inside the evaporation chamber 19, which would cause the scraper 21 to move during this period.

[0084] refer to Figure 1 , Figure 9 and Figure 10It also includes a clamping assembly, which includes a mounting box 322 fixedly connected to the side wall of the furnace body 1. The mounting box 322 has a through-hole extension groove 323. A guide plate 321 is slidably connected in the extension groove 323. A limiting groove 324 is provided inside the mounting box 322. Friction blocks 325 are symmetrically slidably connected to both sides of the guide plate 321 inside the limiting groove 324. A fifth elastic element 326 is connected between the two friction blocks 325. An adjusting element 327 is fixedly embedded on the side of the two friction blocks 325 that are close to each other. Specifically, the adjusting element 327 is an electromagnet. When the adjusting element 327 is energized, it can attract each other, causing the two friction blocks 325 to compress the fifth elastic element 326 and move closer to each other, thus clamping the guide plate 321.

[0085] In actual operation, when the steam boiler is about to finish working, multiple adjusting components 327 are activated. After the adjusting components 327 are powered on, they can attract each other, thereby driving the two friction blocks 325 to compress the fifth elastic component 326 and bring them closer together, clamping the guide plate 321, which can limit the sealing plate 320 and the piston component 25 to the right position.

[0086] After the steam boiler has been working for a period of time, multiple regulating components 327 can be closed. The fifth elastic component 326 will push the two friction blocks 325 away from each other, releasing the clamping of the guide plate 321. The sealing plate 320 and piston component 25 can move normally, thereby preventing the scraper 21 from moving during the cold water period. The opening and closing of the regulating components 327 can be controlled by setting a program without manual intervention, thereby further improving the working efficiency and safety of the equipment.

[0087] Example 4

[0088] A control method for an energy-saving steam boiler includes the following steps:

[0089] S1. The piston 25 is moved by the pressure change in the evaporation chamber 19, which drives the scraping mechanism 2 to run.

[0090] S2. The scraper 21 moves back and forth, causing the dust removal mechanism 3 to vibrate when triggered by the paddle 39.

[0091] S3. The smoke outlet 114 is periodically sealed by the sealing plate 320 to increase the pressure and cause the smoke to fall into the storage box 310.

[0092] S4. In cold water condition, the guide plate 321 is locked by adjusting component 327 to prevent malfunction.

[0093] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving steam boiler, comprising a furnace body (1), a furnace shell (11), a burner (12), a combustion chamber (13), a first flue (14), a second flue (15), an evaporation chamber (19), a second flue gas chamber (110), and a flue gas outlet (114), characterized in that, Also includes: The scraping mechanism (2) is used to remove scale from the outer walls of the furnace (11), the first flue (14) and the second flue (15) by reciprocating motion; The dust removal mechanism (3) is used to generate vibration during the movement of the scraping mechanism (2) to strip off soot and slag; Storage components are used to collect stripped soot and slag and to provide cooling and isolation. The scraping mechanism (2) includes: The scraper (21) has through holes through which the furnace liner (11), the first flue (14) and the second flue (15) pass; A reciprocating threaded rod (22) is threadedly connected to the scraper (21) to drive its reciprocating movement, and a second gear (210) is fixed at its end. The exhaust passage (24) has a piston (25) sealed and slidably connected inside, and a first elastic element (26) is connected between the piston (25) and the piston (25). Rotary rod (27) is rotatably connected to the piston (25). One end is fixed with a first gear (29) for meshing with the second gear (210) when the piston (25) moves. The other end passes through the piston (25) and is fixed with a rotating blade (28) for driving the rotary rod (27) to rotate through the steam flow in the exhaust channel (24). The dust removal mechanism (3) includes: Mounting plate (31) is hinged in mounting groove (32) of scraper (21) and reset by a second elastic element (34) provided between its top and mounting groove (32); A paddle (39) is fixed inside the furnace body (1) and is used to trigger the deflection of the mounting plate (31); The striking element (37) is fixedly connected to the mounting plate (31) via the third elastic element (36) and is used to strike the scraper (21) when the mounting plate (31) is reset. The storage component includes: The storage box (310) is located at the bottom of the furnace body (1) and communicates with the second flue gas chamber (110) through the ash outlet (312) opened at the bottom of the furnace body (1); The partition plate (311) divides the storage box (310) into upper and lower chambers and provides a communication port (313). The first sealing plug (314) and the second sealing plug (315) are fixedly connected by a fixing rod (316) to alternately seal the ash outlet (312) and the connecting port (313).

2. The energy-saving steam boiler according to claim 1, characterized in that, The dust removal mechanism (3) also includes: A sealing plate (320) is slidably disposed at the smoke exhaust port (114) for pressurizing by sealing the smoke exhaust port (114); A pressure relief valve (328) is provided on the sealing plate (320) for releasing excess flue gas pressure when the exhaust port (114) is closed; A connecting rod (319) is used to link the sealing plate (320) with the rotating rod (27).

3. The energy-saving steam boiler according to claim 2, characterized in that, It also includes a clamping assembly, the clamping assembly comprising: Mounting box (322) is fixed to the side wall of the furnace body (1); The friction block (325), controlled by the fifth elastic element (326) and the adjusting element (327), is used to lock the guide plate (321).

4. The energy-saving steam boiler according to claim 3, characterized in that, A fourth elastic element (317) is provided between the first sealing plug (314) and the isolation plate (311) for automatically opening and closing the ash outlet (312) under the action of flue gas pressure.

5. The energy-saving steam boiler according to claim 4, characterized in that, The furnace body (1) is fixedly connected to a support member (38) arranged parallel to the reciprocating threaded rod (22), and the paddles (39) are evenly distributed along the support member (38).

6. A control method for an energy-saving steam boiler, applied to the energy-saving steam boiler as described in claim 5, characterized in that, Includes the following steps: S1. The piston (25) is triggered to move by the pressure change in the evaporation chamber (19), which drives the scraping mechanism (2) to run; S2. The scraper (21) moves back and forth, causing the dust removal mechanism (3) to vibrate when triggered by the paddle (39); S3. The smoke outlet (114) is periodically sealed by the sealing plate (320) to increase the pressure and cause the smoke to fall into the storage box (310). S4. In cold water condition, the guide plate (321) is locked by the adjusting component (327) to prevent malfunction.

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