Soot blowing mechanism of pulverized coal fired boiler

Abstract

The invention discloses a soot blowing mechanism of a pulverized coal fired boiler, and belongs to the technical field of pulverized coal fired boilers. The soot blowing mechanism of the pulverized coal fired boiler comprises a boiler body and a threaded rod moving assembly fixedly installed on the side wall of the boiler body, the bottom of the moving end of the threaded rod moving assembly is fixedly connected with a long plate, the bottom of the threaded rod moving assembly is fixedly connected with a fixing plate, and a round hole is formed in the side wall of the fixing plate; a round ball is rotatably installed on the inner wall of the fixing plate, and a connecting pipe is rotatably connected to the side wall of the boiler body in a penetrating and sliding mode. First vent holes are blocked by adjusting the position of a cylinder, and under the condition that the power of an external air pump and the like are not changed, the number of the first vent holes capable of working is controlled; and the spraying distance of the first vent hole which works singly is farther than that of the two first vent holes which work singly, so that soot blowing can be better carried out on corners which are farther away from the position of the air spraying pipe and some relatively asparagus corners.

Description

Technical Field

[0001] The invention belongs to the technical field of pulverized coal boilers, and in particular relates to a soot blowing mechanism of a pulverized coal boiler. Background Art

[0002] The furnace of a pulverized coal boiler is the place where fuel is burned. It is surrounded by evaporation heating surfaces and sometimes wall-type heat arrays. The furnace is also the place for heat exchange and is one of the most important parts of the boiler. Due to the influence of various factors during the operation of the boiler, various forms of ash and slag will be generated. These ash and slag will not only affect the heat transfer efficiency of the boiler, but also cause the boiler to operate unstably, and even cause shutdown accidents in severe cases. Therefore, boiler ash cleaning is a very important task. At present, high-pressure gas is often used to spray inside the boiler to clean the inside of the boiler.

[0003] Chinese patent CN219735350U announces a sootblowing mechanism for a pulverized coal boiler, including a boiler body and a mounting seat, the lower surface of the mounting seat is slidably connected with a connecting seat, the lower surface of the mounting seat is provided with a driving component that can drive the connecting seat to move, the left side of the connecting seat is rotatably connected with a connecting pipe, the surface of the connecting pipe is provided with a track groove, and the surface of the connecting pipe is sleeved with a ring. The utility model is provided with a connecting pipe and a sealing plate. The forward transmission of the driving motor can drive the connecting seat to move to the left along the trajectory of the sliding groove and drive the connecting pipe into the boiler body. When the connecting pipe enters the boiler body, the moving jet hole is used to spray high-pressure gas to blow soot into the boiler body. At the same time, the driving motor is reversed to drive the connecting seat to move to the right, thereby driving the sealing plate to seal the step hole and moving the connecting pipe out of the boiler body, thereby preventing the connecting pipe from being subjected to high temperature, thereby avoiding the problem that the ash nozzle in the prior art will be damaged due to excessive temperature.

[0004] The soot blowing mechanism of the pulverized coal boiler proposed in the above-mentioned prior art uses gas to spray out gas through the jet hole when cleaning the inside of the pulverized coal boiler. However, the position of the jet hole is relatively fixed. When the external air pump power and other factors remain stable, it is not possible to perform better jet soot blowing on some positions of the boiler inner wall that are relatively close to the jet hole or some tricky corners of the boiler inner wall. In addition, when the connecting pipe penetrates into the inner wall of the boiler for cleaning, in order to make the boiler work as quickly as possible, soot blowing is often performed before the internal temperature of the boiler is completely lowered. At this time, the internal temperature of the boiler is relatively high, which is easy to cause damage to the side wall of the connecting pipe. Therefore, the economist needs to cool down the inner wall of the connecting pipe, but the soot blowing mechanism of the pulverized coal boiler proposed in the above-mentioned prior art does not cool it down.

[0005] Therefore, we propose a soot blowing mechanism for a pulverized coal boiler in order to solve the above-mentioned problems. Summary of the invention

[0006] In view of the problems in the prior art that the ash cannot be cleaned at a position far from the jet hole or in some tricky corners and the connection pipe cannot be cooled, the purpose of the present invention is to provide a soot blowing mechanism for a pulverized coal boiler.

[0007] In order to solve the above problems, the technical scheme adopted by the present invention is as follows: a soot blowing mechanism of a pulverized coal boiler comprises a boiler body and a threaded rod moving assembly fixedly installed on the side wall of the boiler body, the bottom of the moving end of the threaded rod moving assembly is fixedly connected to a long plate, the bottom of the threaded rod moving assembly is fixedly connected to a fixed plate, a round hole is provided on the side wall of the fixed plate, a round ball is rotatably installed on the inner wall of the fixed plate, the side wall of the boiler body is penetrated and slidably connected to a connecting pipe, a threaded groove is provided on the side wall of the connecting pipe, the round ball and the inner wall of the threaded groove slide against each other, the inner wall of the connecting pipe is fixedly connected to an injection pipe, the side wall of the long plate is fixedly connected to a wide box, the side wall of the wide box is penetrated and sealed and rotatably connected to a mounting seat, the side wall of the mounting seat and the side wall of the connecting pipe are fixedly connected to the side wall of the long plate, and the side wall of the long plate is penetrated and rotatably connected to a gas supply pipe, and one end of the gas supply pipe penetrates into the inside of the injection pipe; A circular groove is formed at one end of the gas injection pipe away from the gas transmission pipe, a first vent hole is symmetrically formed on the side wall of the circular groove, a cylinder is slidably connected to the inner wall of the circular groove, a second vent hole is symmetrically formed on the side wall of the cylinder, and a third vent hole is formed on the side wall of the cylinder; The side wall of the jet pipe is provided with a first long groove, the inner wall of the first long groove is slidably connected with a first long rod, the side wall of the first long rod is provided with a short groove, the inner wall of the first short groove is slidably connected with a first clamping block, the side wall of the jet pipe is provided with a first through hole, the side wall of the cylinder is provided with a first slot, and one end of the first clamping block is inserted into the first slot through the first through hole; A cavity is opened on the side wall of the jet pipe, and elastic water bags are symmetrically fixedly installed on the inner wall of the cavity. A short tube is fixedly connected to one side wall of the elastic water bag, and the other end of the short tube passes through the mounting seat and is connected to the wide box. A balance pipe is fixedly connected to the other side wall of the elastic water bag.

[0008] Furthermore, the threaded rod moving assembly includes structures such as a mounting frame, a threaded rod and a slider. A motor is fixedly installed on the side wall of the threaded rod moving assembly, the output end of the motor is fixedly connected to one end of the threaded rod, a wide groove is opened on the inner wall of the boiler body, and one end of the jet pipe and the connecting pipe slides inside the wide groove.

[0009] Furthermore, a rotating joint is fixedly installed at one end of the gas delivery pipe away from the jet pipe, the side wall of the cylinder mouth is inclined, baffles are symmetrically fixedly connected to the inner wall of the circular groove, and a protrusion is fixedly connected to the side wall of the cylinder.

[0010] Furthermore, the inner wall of the short groove is symmetrically provided with a first oblique groove, and the inner walls of the two first oblique grooves are slidably connected with a first sliding rod, the first sliding rod slides after passing through the side wall of the first block, and the inner wall of the first long groove is fixedly connected with a first spring, and the other end of the first spring is fixedly connected to the side wall of the first long rod.

[0011] Furthermore, the side wall of the jet pipe is provided with a second long groove, the inner wall of the second long groove is slidably connected with a short box, the inner wall of the short box is slidably connected with a second clamping block, the side wall of the jet pipe is provided with a second through hole, and one end of the second clamping block is inserted into the second through hole.

[0012] Furthermore, a second slot is provided on the side wall of the cylinder, a second long rod is fixedly connected to the bottom of the short box, the second long rod is an L-shaped structure, a reset rod is fixedly connected to the side wall of the cylinder, a reset hole is provided on the side wall of the cylinder and the side wall of the jet pipe, and the reset rod slides outside the jet pipe through the reset hole.

[0013] Furthermore, the side wall of the protrusion is rotatably connected to a first ball, the side wall of the first long rod is rotatably connected to a second ball, the side wall of the second long rod is rotatably connected to a third ball, the third ball abuts against the inner wall of the wide groove, the side wall of the reset rod is rotatably connected to a fourth ball, and the fourth ball abuts against the side wall of the connecting tube.

[0014] Furthermore, the inner wall of the short box is symmetrically provided with second oblique grooves, the inner walls of the two second oblique grooves are slidably connected with a second slide rod, the second slide rod slides after passing through the second block, the inner wall of the second long groove is fixedly connected with a second spring, and the other end of the second spring is fixedly connected to the side wall of the short box.

[0015] Furthermore, the fixed plate side wall is fixedly connected with a fixed rod, the long plate side wall is penetrated and fixedly connected with a long cylinder, the inner wall of the long cylinder is sealingly and slidably connected with a piston block, and the other end of the fixed rod is fixedly connected with the side wall of the piston block.

[0016] Furthermore, the side wall of the long cylinder is fixedly connected to a long tube, the other end of the long tube is fixedly connected to the side wall of the wide box, the two side walls of the elastic water bags are commonly connected to an arc-shaped water pipe, the bottom of the mounting seat is fixedly connected to a balance box through a bracket, the inside of the balance box is sealed and slidably connected to a piston plate, balance holes are symmetrically opened at the bottom of the balance box, and one end of the balance tube away from the elastic water bag is fixedly connected to the top of the balance box.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing the first vent hole, the second vent hole and the cylinder structure, the first vent hole can be blocked by adjusting the position of the cylinder. Under the condition that the power of the external air pump and the like remain unchanged, the number of the first vent holes that can work is controlled, and the distance that a single first vent hole that works can be sprayed is farther than that of two first vent holes that work, thereby better soot blowing can be performed on corners that are far away from the injection pipe and in some tricky corners.

[0018] 2. In the present invention, by providing the first inclined groove, the second inclined groove, the first clamping block and the second clamping block and other structures, the first long rod first abuts against the inner wall of the boiler body, and then the first clamping block releases the restriction on the cylinder, and then the cylinder can use its own side wall and the third air vent to achieve the purpose of allowing only one first air vent to work, and the cylinder is fixed under the action of the second clamping block, and when the connecting pipe and the like are retracted into the wide groove, the second long rod abuts against the inner wall of the wide groove, thereby releasing the fixation of the cylinder, and the cylinder is moved to the initial position again under the action of the reset rod and is clamped with the first clamping block again to complete the fixation of the cylinder, and can work again in the next cleaning process.

[0019] 3. In the present invention, by providing structures such as long tubes, elastic water bags and piston blocks, during the reciprocating movement of the long plate, when the long plate box moves close to the side wall of the boiler body, the coolant inside the wide box and the long tube can be squeezed into the elastic water bag, and the original liquid inside the elastic water bag can be squeezed into the balance box for cooling. When the long plate box moves away from the side wall of the boiler body, the coolant in the balance box is absorbed into the elastic water bag, thereby ensuring that the elastic water bag can continuously cool the connecting pipe, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall internal structure of the present invention; Figure 3 It is a schematic cross-sectional view of the internal structure of the wide groove in the present invention; Figure 4 for Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 for Figure 3 A schematic diagram of the structure of part B in the middle; Figure 6 It is a schematic rear view of the structure of the cylinder in the present invention; Figure 7 It is a schematic side view of the structure of the cylinder in the present invention; Figure 8 Schematic diagram of the internal structure of the air jet pipe in the present invention; Fig. 9 It is a schematic diagram of the internal structure of the long tube and the connecting tube in the present invention; Fig.10 It is a schematic diagram of the structure of the elastic water bag and the balance box in the present invention; Fig.11 for Fig.10 Schematic diagram of the structure of part C.

[0021] In the figure: 1, boiler body; 2, threaded rod moving assembly; 3, motor; 4, fixed plate; 5, round hole; 6, round ball; 7, long plate; 8, wide box; 9, mounting seat; 10, connecting pipe; 11, jet pipe; 12, wide groove; 13, gas pipe; 14, round groove; 15, first vent hole; 16, cylinder; 17, second vent hole; 18, bump; 19, first long groove; 20, first long rod; 21, short groove; 22, first inclined groove; 23, first slide rod; 24, first through hole; 25, first slot; 26, first The clamping block; 27, the first spring; 28, the second slot; 29, the second long slot; 30, the short box; 31, the second long rod; 32, the second inclined slot; 33, the second slide rod; 34, the second clamping block; 35, the second through hole; 36, the fixing rod; 37, the long cylinder; 38, the piston block; 39, the cavity; 40, the elastic water bag; 41, the short tube; 42, the long tube; 43, the third vent hole; 44, the second spring; 45, the arc water pipe; 46, the reset rod; 47, the balance tube; 48, the balance box; 49, the piston plate; 50, the balance hole. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments.

[0023] In order to solve the problem that some of the pulverized coal boilers are far from the jet pipe 11 and some of the more tricky corners, the jet soot blowing cannot be performed well and the fuel residue cannot be better cleaned, such as Figure 1 - Fig. 9As shown: a soot blowing mechanism of a pulverized coal boiler, comprising a boiler body 1 and a threaded rod moving assembly 2 fixedly installed on the side wall of the boiler body 1, a long plate 7 is fixedly connected to the bottom of the moving end of the threaded rod moving assembly 2, a fixed plate 4 is fixedly connected to the bottom of the threaded rod moving assembly 2, a round hole 5 is opened on the side wall of the fixed plate 4, a ball 6 is rotatably installed on the inner wall of the fixed plate 4, a connecting pipe 10 is slidably penetrated and rotatably connected to the side wall of the boiler body 1, a threaded groove is opened on the side wall of the connecting pipe 10, the ball 6 and the inner wall of the threaded groove slide against each other, and the inner wall of the connecting pipe 10 is fixedly connected to the jet pipe 11, so that when the connecting pipe 10 moves, the ball 6 can pass through The threaded groove drives the connecting pipe 10 to rotate, and then when the connecting pipe 10 moves to the inside of the boiler body 1, the jet pipe 11 can rotate synchronously, the side wall of the long plate 7 is fixedly connected to the wide box 8, and the side wall of the wide box 8 is penetrated by a mounting seat 9 that is sealed and rotatably connected, the side wall of the mounting seat 9 and the side wall of the connecting pipe 10 are fixedly connected, and then the connecting pipe 10 can be driven to move by the threaded rod moving component 2, the side wall of the long plate 7 is penetrated by a gas pipe 13 that is rotatably connected, one end of the gas pipe 13 penetrates into the inside of the jet pipe 11, the user can supply gas to the inside of the jet pipe 11 through the gas pipe 13, and the gas pipe 13 and the wide box 8 are sealed and penetrated and rotatably connected.

[0024] A circular groove 14 is provided at one end of the jet pipe 11 away from the gas delivery pipe 13, and a first air vent 15 is symmetrically provided on the side wall of the circular groove 14. A cylinder 16 is slidably connected to the inner wall of the circular groove 14, and a second air vent 17 is symmetrically provided on the side wall of the cylinder 16. A third air vent 43 is provided on the side wall of the cylinder 16. The high-pressure air inside the jet pipe 11 can be ejected through the first air vent 15 and the second air vent 17, thereby facilitating the jet treatment of the inside of the boiler body 1 and blowing away the dust generated after combustion inside the boiler body 1.

[0025] A first long groove 19 is provided on the side wall of the jet pipe 11, and a first long rod 20 is slidably connected to the inner wall of the first long groove 19, a short groove 21 is provided on the side wall of the first long rod 20, and a first clamping block 26 is slidably connected to the inner wall of the first short groove 21, a first through hole 24 is provided on the side wall of the jet pipe 11, and a first slot 25 is provided on the side wall of the cylinder 16, one end of the first clamping block 26 is inserted into the first slot 25 through the first through hole 24, and at this time, the first clamping block 26 can limit the cylinder 16 so that the cylinder 16 does not move.

[0026] A cavity 39 is formed on the side wall of the jet pipe 11, and elastic water bags 40 are symmetrically fixedly installed on the inner wall of the cavity 39. A short tube 41 is fixedly connected to the side wall of one of the elastic water bags 40, and the other end of the short tube 41 passes through the mounting seat 9 and is connected to the wide box 8. A balance pipe 47 is fixedly connected to the side wall of the other elastic water bag 40. The side wall of the elastic water bag 40 fits with the side wall of the cavity 39, thereby facilitating cooling of the side wall of the jet pipe 11.

[0027] The threaded rod moving assembly 2 includes structures such as a mounting frame, a threaded rod and a slider. A motor 3 is fixedly installed on the side wall of the threaded rod moving assembly 2. The output end of the motor 3 is fixedly connected to one end of the threaded rod. A wide groove 12 is opened on the inner wall of the boiler body 1. One end of the jet pipe 11 and the connecting pipe 10 slide inside the wide groove 12. The diameter of the wide groove 12 is larger than the diameter of the connecting pipe 10, which facilitates the movement of the connecting pipe 10.

[0028] A rotating joint is fixedly installed at one end of the air delivery pipe 13 away from the injection pipe 11. The side wall of the barrel mouth of the cylinder 16 is inclined, which has a certain guiding effect on the high-pressure air inside the injection pipe 11 and reduces the resistance to the air. The inner wall of the circular groove 14 is symmetrically fixed with baffles, which limit the movement trajectory of the cylinder 16 and prevent the cylinder 16 from moving out of the circular groove 14. The side wall of the cylinder 16 is fixedly connected with a bump 18.

[0029] The inner wall of the short groove 21 is symmetrically provided with first inclined grooves 22, and the inner walls of the two first inclined grooves 22 are slidably connected with a first slide bar 23, which slides after passing through the side wall of the first clamping block 26, and the inner wall of the first long groove 19 is fixedly connected with a first spring 27, and the other end of the first spring 27 is fixedly connected to the side wall of the first long rod 20, and then when the first long rod 20 and the inner wall of the boiler body 1 are against each other, the first spring 27 will be squeezed, and when the squeezing of the first spring 27 is released, the first spring 27 can drive the first long rod 20 to reset, so that the first clamping block 26 can clamp and fix the cylinder 16 again.

[0030] A second long groove 29 is provided on the side wall of the jet pipe 11, and a short box 30 is slidably connected to the inner wall of the second long groove 29, and a second clamping block 34 is slidably connected to the inner wall of the short box 30. A second through hole 35 is provided on the side wall of the jet pipe 11, and one end of the second clamping block 34 is inserted into the second through hole 35. The second long groove 29 has a narrow groove mouth and a wide groove structure, thereby preventing the short box 30 from falling into the second long groove 29.

[0031] A second slot 28 is provided on the side wall of the cylinder 16, and a second long rod 31 is fixedly connected to the bottom of the short box 30. The second long rod 31 is an L-shaped structure, which facilitates the second long rod 31 to interact with the inner wall of the wide groove 12. A reset rod 46 is fixedly connected to the side wall of the cylinder 16. A reset hole is provided on the side wall of the cylinder 16 and the side wall of the jet pipe 11, and the reset rod 46 slides outside the jet pipe 11 through the reset hole.

[0032] The side wall of the protrusion 18 is rotatably connected to a first ball, the side wall of the first long rod 20 is rotatably connected to a second ball, and the side wall of the second long rod 31 is rotatably connected to a third ball. The third ball abuts against the inner wall of the wide groove 12. When the protrusion 18, the first long rod 20 and the second long rod 31 abut against the inner wall of the boiler body 1 or the inner wall of the wide groove 12, it is easier to rotate against each other. The side wall of the reset rod 46 is rotatably connected to a fourth ball, and the fourth ball abuts against the side wall of the connecting pipe 10.

[0033] The inner wall of the short box 30 is symmetrically provided with second inclined grooves 32, and the inner walls of the two second inclined grooves 32 are slidably connected with a second slide bar 33, and the second slide bar 33 slides after passing through the second clamping block 34. The inner wall of the second long groove 29 is fixedly connected with a second spring 44, and the other end of the second spring 44 is fixedly connected to the side wall of the short box 30. In the initial state, the second spring 44 is in an extruded state, and when the cylinder 16 moves, it will drive the second slot 28 to move. When the second slot 28 and the second through hole 35 overlap, one end of the second clamping block 34 will be inserted into the second slot 28 without being blocked, thereby fixing the cylinder 16.

[0034] When it is necessary to perform jet soot blowing inside the boiler body 1, the motor 3 is first started, and then the gas delivery pipe 13 is connected to the input end of the external air pump through the rotary joint and the external air pump is started. The motor 3 drives the moving end of the threaded rod moving assembly 2 to move, and the moving end drives the long plate 7 to move, and the long plate 7 drives the wide box 8, the connecting pipe 10 and the jet pipe 11 and other structures to move, and under the action of the spiral groove outside the ball 6 and the connecting pipe 10, the connecting pipe 10 will also rotate when moving, and at this time, the two first vents 15 and the corresponding second vents 1 7 overlap, and then after the external air pump generates high-pressure gas, the high-pressure gas is ejected through the jet pipe 11, the second vent hole 17 and the first vent hole 15. When one end of the jet pipe 11 is about to abut against the inner wall of the boiler body 1, the second ball on the side wall of the first long rod 20 first abuts against the inner wall of the boiler body 1. At this time, the first long rod 20 squeezes the first spring 27 and drives the first slide bar 23 to move. The first slide bar 23 moves along the inner wall direction of the first inclined groove 22, and then the first block 26 moves out of the first slot 25, and then the cylinder 16 can move freely.

[0035] Then, the first ball on the side wall of the protrusion 18 abuts against the inner wall of the boiler body 1, thereby driving the cylinder 16 to move until the second slot 28 overlaps with the second through hole 35, and one end of the second clamping block 34 is inserted into the second slot 28 under the elastic action of the second spring 44, thereby completing the limit fixation of the cylinder 16. At this time, the second air hole 17 no longer overlaps with the first air hole 15, and the third air hole 43 overlaps with the adjacent first air hole 15, so that only one of the two first air holes 15 can spray, and the other is blocked by the inner wall of the cylinder 16. Then, when the power of the external air pump remains unchanged, the single working first air hole 15 can spray farther than the two working first air holes 15, so that better soot blowing can be performed on corners that are far away from the injection pipe 11 and some more tricky corners.

[0036] When the jet pipe 11 moves to the initial position again, the third ball on the side wall of the second long rod 31 abuts against the inner wall of the wide groove 12, thereby pushing the second long rod 31 to drive the short box 30 to move and squeeze the second spring 44, and the second block 34 follows the second slide bar 33 to move out of the second slot 28. At this time, the cylinder 16 is in a free moving state, and the reset rod 46 also collides with the inner wall of the connecting tube 10, and then the reset rod 46 will drive the cylinder 16 to move toward the notch of the circular groove 14. At this time, the first long rod 20 no longer abuts against the inside of the boiler body 1, and then under the elastic action of the first spring 27, the first block 26 is inserted into the first slot 25 through the first through hole 24 again to complete the reset, which is convenient for subsequent cleaning.

[0037] In order to solve the problem that the pipe body of the pulverized coal boiler that is used for jet injection is easily damaged under high temperature conditions, such as Figure 8 - Fig.11 As shown: A fixing rod 36 is fixedly connected to the side wall of the fixing plate 4, a long cylinder 37 is fixedly connected to the side wall of the long plate 7, a piston block 38 is sealingly and slidably connected to the inner wall of the long cylinder 37, the other end of the fixing rod 36 is fixedly connected to the side wall of the piston block 38, and the setting of the piston block 38 makes the interior of the long cylinder 37 sealed.

[0038] The side wall of the long tube 37 is fixedly connected with a long tube 42, and the other end of the long tube 42 is fixedly connected with the side wall of the wide box 8. When the long board 7 moves, the long tube 37 is driven to move toward the fixed rod 36, thereby squeezing the liquid inside the long tube 37, so that the liquid inside the long tube 37 enters the wide box 8. The side walls of the two elastic water bags 40 are commonly connected with an arc-shaped water pipe 45, thereby connecting the two elastic water bags 40, so that the liquid inside the two elastic water bags 40 can circulate. The bottom of the mounting seat 9 is fixedly connected with a balance box 48 through a bracket, and a piston plate 49 is sealed and slidably connected inside the balance box 48. Balance holes 50 are symmetrically opened at the bottom of the balance box 48. One end of the balance tube 47 away from the elastic water bag 40 is fixedly connected to the top of the balance box 48, so that when the piston block 38 reciprocates inside the long cylinder 37, the liquid inside the two elastic water bags 40, the long cylinder 37, and the wide box 8 can be squeezed, and the liquid inside the two elastic water bags 40 can be squeezed into the balance box 48. The liquid squeezes the inside of the balance box 48 to drive the piston plate 49 to move, and the balance hole 50 balances the air pressure in the space formed by the bottom of the piston plate 49 and the inner wall of the balance box 48, so that the liquid inside the two elastic water bags 40 can be replaced, so that the elastic water bags 40 can continue to cool the jet pipe 11 and the connecting pipe 10.

[0039] When the boiler body 1 is cleaned, since there is still a large amount of heat remaining inside the boiler body 1, in order to avoid damage to the connecting pipe 10 and the jet pipe 11, they need to be cooled. At this time, the coolant inside the elastic water bag 40 can cool the side wall of the jet pipe 11, and then the jet pipe 11 can cool the side wall of the connecting pipe 10. When the connecting pipe 10 moves into the boiler body 1, the long plate 7 drives the long cylinder 37 to move, and then the piston block 38 moves inside the long cylinder 37. The piston block 38 squeezes the space inside the long cylinder 37. At this time, the liquid inside the long cylinder 37 moves to the inside of the wide box 8 through the long tube 42. And through the short tube 41 and the wide box 8, the coolant inside the wide box 8 and the long tube 37 is squeezed into the elastic water bag 40, and then the coolant whose temperature is increased due to cooling the connecting tube 10 is squeezed into the balance box 48, and the coolant with lower temperature is replaced into the elastic water bag 40, so that the elastic water bag 40 can continue to cool the connecting tube 10 and the jet pipe 11. When the long board 7 moves to the original position again, the coolant inside the elastic water bag 40 is absorbed again, and the liquid inside the balance box 48, the elastic water bag 40 and other structures is absorbed, thereby ensuring that the coolant inside the elastic water bag 40 can continue to work.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sootblowing mechanism for a pulverized coal boiler, comprising a boiler body (1) and a threaded rod moving assembly (2) fixedly mounted on a side wall of the boiler body (1), characterized in that: The bottom of the moving end of the threaded rod moving assembly (2) is fixedly connected to a long plate (7), the bottom of the threaded rod moving assembly (2) is fixedly connected to a fixed plate (4), a round hole (5) is provided on the side wall of the fixed plate (4), a round ball (6) is rotatably installed on the inner wall of the fixed plate (4), a connecting pipe (10) is slidably and rotatably connected to the side wall of the boiler body (1), a thread groove is provided on the side wall of the connecting pipe (10), the round ball (6) and the inner wall of the thread groove slide against each other, the inner wall of the connecting pipe (10) is fixedly connected to an injection pipe (11), the side wall of the long plate (7) is fixedly connected to a wide box (8), the side wall of the wide box (8) is sealed and rotatably connected to a mounting seat (9), the side wall of the mounting seat (9) and the side wall of the connecting pipe (10) are fixedly connected to the side wall of the long plate (7), and a gas supply pipe (13) is rotatably connected to the side wall of the long plate (7), one end of the gas supply pipe (13) penetrates into the inside of the injection pipe (11); A circular groove (14) is formed at one end of the gas injection pipe (11) away from the gas delivery pipe (13); a first vent hole (15) is symmetrically formed on the side wall of the circular groove (14); a cylinder (16) is slidably connected to the inner wall of the circular groove (14); a second vent hole (17) is symmetrically formed on the side wall of the cylinder (16); and a third vent hole (43) is formed on the side wall of the cylinder (16); The side wall of the jet pipe (11) is provided with a first long groove (19), the inner wall of the first long groove (19) is slidably connected to a first long rod (20), the side wall of the first long rod (20) is provided with a short groove (21), the inner wall of the first short groove (21) is slidably connected to a first clamping block (26), the side wall of the jet pipe (11) is provided with a first through hole (24), the side wall of the cylinder (16) is provided with a first slot (25), and one end of the first clamping block (26) is inserted into the first slot (25) through the first through hole (24); The side wall of the jet pipe (11) is provided with a cavity (39), and the inner wall of the cavity (39) is symmetrically fixedly mounted with elastic water bags (40), wherein a short tube (41) is passed through and fixedly connected to the side wall of one of the elastic water bags (40), and the other end of the short tube (41) passes through the mounting seat (9) and is connected to the wide box (8), and a balance tube (47) is passed through and fixedly connected to the side wall of the other elastic water bag (40).

2. A sootblowing mechanism for a pulverized coal boiler according to claim 1, characterized in that: The threaded rod moving assembly (2) comprises a mounting frame, a threaded rod, a slider and other structures. A motor (3) is fixedly mounted on the side wall of the threaded rod moving assembly (2). The output end of the motor (3) is fixedly connected to one end of the threaded rod. A wide groove (12) is formed on the inner wall of the boiler body (1). One end of the jet pipe (11) and the connecting pipe (10) slide inside the wide groove (12).

3. A soot blowing mechanism for a pulverized coal boiler according to claim 2, characterized in that: A rotating joint is fixedly mounted on one end of the gas delivery pipe (13) away from the air injection pipe (11); the side wall of the cylinder mouth of the cylinder (16) is in an inclined state; baffles are symmetrically fixedly connected to the inner wall of the circular groove (14); and a protrusion (18) is fixedly connected to the side wall of the cylinder (16).

4. A sootblowing mechanism for a pulverized coal boiler according to claim 3, characterized in that: The inner wall of the short slot (21) is symmetrically provided with first inclined slots (22), the inner walls of the two first inclined slots (22) are slidably connected to a first slide bar (23), the first slide bar (23) slides after penetrating the side wall of the first clamping block (26), the inner wall of the first long slot (19) is fixedly connected to a first spring (27), and the other end of the first spring (27) is fixedly connected to the side wall of the first long bar (20).

5. A soot blowing mechanism for a pulverized coal boiler according to claim 4, characterized in that: The side wall of the jet pipe (11) is provided with a second long groove (29), the inner wall of the second long groove (29) is slidably connected with a short box (30), the inner wall of the short box (30) is slidably connected with a second clamping block (34), the side wall of the jet pipe (11) is provided with a second through hole (35), and one end of the second clamping block (34) is inserted into the second through hole (35).

6. A soot blowing mechanism for a pulverized coal boiler according to claim 5, characterized in that: The side wall of the cylinder (16) is provided with a second slot (28); the bottom of the short box (30) is fixedly connected to a second long rod (31); the second long rod (31) is an L-shaped structure; the side wall of the cylinder (16) is fixedly connected to a reset rod (46); the side wall of the cylinder (16) and the side wall of the jet pipe (11) are both provided with a reset hole; the reset rod (46) slides outside the jet pipe (11) through the reset hole.

7. A soot blowing mechanism for a pulverized coal boiler according to claim 6, characterized in that: The side wall of the protrusion (18) is rotatably connected to a first ball, the side wall of the first long rod (20) is rotatably connected to a second ball, the side wall of the second long rod (31) is rotatably connected to a third ball, the third ball abuts against the inner wall of the wide groove (12), and the side wall of the reset rod (46) is rotatably connected to a fourth ball, the fourth ball abuts against the side wall of the connecting tube (10).

8. The soot blowing mechanism of a pulverized coal boiler according to claim 7, characterized in that: The inner wall of the short box (30) is symmetrically provided with second inclined grooves (32), the inner walls of the two second inclined grooves (32) are slidably connected to a second slide bar (33), the second slide bar (33) slides after passing through the second clamping block (34), the inner wall of the second long groove (29) is fixedly connected to a second spring (44), and the other end of the second spring (44) is fixedly connected to the side wall of the short box (30).

9. A soot blowing mechanism for a pulverized coal boiler according to claim 8, characterized in that: A fixing rod (36) is fixedly connected to the side wall of the fixing plate (4), a long cylinder (37) is fixedly connected to the side wall of the long plate (7), a piston block (38) is sealingly and slidably connected to the inner wall of the long cylinder (37), and the other end of the fixing rod (36) is fixedly connected to the side wall of the piston block (38).

10. A soot blowing mechanism for a pulverized coal boiler according to claim 9, characterized in that: The side wall of the long tube (37) is fixedly connected to a long tube (42), the other end of the long tube (42) is fixedly connected to the side wall of the wide box (8), the side walls of the two elastic water bags (40) are commonly connected to an arc-shaped water pipe (45), the bottom of the mounting seat (9) is fixedly connected to a balance box (48) through a bracket, the inside of the balance box (48) is sealed and slidably connected to a piston plate (49), the bottom of the balance box (48) is symmetrically provided with balance holes (50), and one end of the balance pipe (47) away from the elastic water bag (40) is fixedly connected to the top of the balance box (48).

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