A biomass water-tube steam boiler

Abstract

The present invention is applicable to the technical field of biomass boilers, and provides a biomass water-tube steam boiler, which comprises a boiler body; a combustion device rotatably fitted with the inner wall of the furnace chamber is fixedly installed on the side of the boiler body; the combustion device comprises a feeding part; the feeding part comprises a transverse feeding cylinder; a curved furnace grate is fixed at the end of the transverse feeding cylinder; a transverse auger is rotatably arranged through the inside of the transverse feeding cylinder; a turning part is fixedly connected to the end of the transverse auger; a plurality of curved feeding cylinders are uniformly fixed on the side surface of the fixing plate, and a curved scraping plate rotatably fitted with the inner circumferential surface of the curved furnace grate is fixed between two adjacent curved feeding cylinders on the side surface thereof; during the process of the transverse auger conveying biomass fuel, through the linkage cooperation between the transverse auger, the feeding part and various components, the feeding part realizes the one-way pushing and leveling of the biomass fuel inside the curved furnace grate, and cooperates with the turning part to turn the biomass particles, thereby improving the use effect of the boiler.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass boilers, and more specifically, it relates to a biomass water-tube steam boiler. Background Art

[0002] Biomass fuel: It refers to using biomass materials as fuel for combustion. Generally, it is mainly agricultural and forestry waste (such as straw, sawdust, bagasse, rice bran, etc.), which is mainly different from fossil fuels. The application of biomass fuel is actually mainly biomass briquette fuel. Taking agricultural and forestry waste as raw materials, through processes such as crushing, mixing, extrusion, and drying, various formed (such as block-shaped, granular, etc.) and directly combustible new clean fuels are made.

[0003] A biomass boiler is a type of boiler. A boiler that uses biomass energy as fuel is called a biomass boiler, which is divided into biomass steam boilers, biomass hot water boilers, biomass hot air stoves, biomass heat transfer oil furnaces, vertical biomass boilers, horizontal biomass boilers, etc.; however, when adding biomass fuel into the biomass boiler continuously, the newly added biomass fuel will cover the fuel that is burning inside, which may cause the flame of the burning fuel to be covered or suppressed, resulting in a slower burning speed of the burning fuel, a slower heat generation speed, and even may extinguish the flame of the biomass fuel burning inside, leading to the boiler going out of fire. At the same time, this feeding method is prone to causing the accumulation of biomass fuel, and the biomass fuel at the bottom and middle burns insufficiently, affecting the use of the boiler. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a biomass water-tube steam boiler. During the process of transporting biomass fuel by a horizontal auger, through the linkage cooperation between the horizontal auger, the material pushing part and various components, the material pushing part realizes the one-way pushing and leveling of the biomass fuel inside the curved grate, and cooperates with the material turning part to turn the biomass particles, effectively avoiding the newly added fuel from directly covering the burning fuel over a large area, and improving the use effect of the boiler.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A biomass water-tube steam boiler, comprising a boiler body; a heat conduction plate is fixed between the inner walls of the boiler body; the heat conduction plate divides the boiler body into a heating chamber and a furnace chamber; a combustion device rotatably fitted with the inner wall of the furnace chamber is fixedly installed on the side of the boiler body; an installation opening is provided on the inner wall of the furnace chamber; the combustion device includes a feeding part; the feeding part includes a transverse feeding cylinder; a curved grate is fixed at the end of the transverse feeding cylinder; a transverse auger is rotatably arranged through the inside of the transverse feeding cylinder; a turning part coaxially arranged with the curved grate is fixedly connected to the end of the transverse auger; the turning part includes a fixing plate; an annular plate is fixed on the side of the fixing plate; an annular groove rotatably fitted with the annular plate is provided on the inner wall of the furnace chamber; a plurality of curved material turning cylinders rotatably fitted with the outer peripheral side of the curved grate are evenly fixed on the side of the fixing plate, and a curved scraping plate rotatably fitted with the inner peripheral side of the curved grate is fixed between the adjacent two curved material turning cylinders on the side; a plurality of ash discharge holes are evenly provided on the inner wall of the curved material turning cylinder; a plurality of ash discharge grooves are evenly provided on the inner wall of the curved scraping plate; a discharge groove is provided on the inner wall of the curved grate.

[0007] The present invention is further provided that: a first motor is fixedly installed at the end of the transverse feeding cylinder; the output end of the first motor is fixedly connected to one end of the transverse auger through a speed reducer; a vertical feeding cylinder is communicated with the peripheral side of the transverse feeding cylinder; a conical feed hopper is communicated with the top end of the vertical feeding cylinder; a mounting plate is fixed at the top end of the conical feed hopper; a second motor is fixedly installed on the top of the mounting plate; a vertical auger is rotatably arranged through the bottom surface of the mounting plate; the output end of the second motor is fixedly connected to the end of the vertical auger.

[0008] The present invention is further provided that: a connecting shaft is fixed on the side of the fixing plate; the end of the connecting shaft and the end of the transverse auger are connected through a heat insulation layer; the heat insulation layer is an axial heat insulation layer, the material thereof is aerogel felt, and it is fixed by using a precision reamed hole bolt; a connecting ring is fixed between the ends of the curved material turning cylinders; a connecting flange placed outside the installation opening is fixed on the peripheral side of the transverse auger; the connecting flange is fixedly installed on the side of the boiler body through a fastening bolt.

[0009] The present invention is further configured as follows: a first mounting box is communicatively arranged on the outer peripheral side of the transverse feeding cylinder; a blower is mounted on the top of the first mounting box; the output end of the blower extends into the interior of the first mounting box; a second mounting box is communicatively arranged on the top of the first mounting box; an electric push rod is fixedly penetrated through the top of the second mounting box; a sliding plate slidably matched with the inner wall of the second mounting box is fixed at the telescopic end of the electric push rod; an inclined guide groove is formed on the bottom surface of the sliding plate; a controller is mounted on the top of the second mounting box; a first baffle and a second baffle are sequentially fixed on the bottom surface of the inclined guide groove; a first pressure sensor and a second pressure sensor are sequentially mounted on the side surfaces of the first baffle and the second baffle; the input end of the controller is electrically connected to the first pressure sensor and the second pressure sensor respectively, and its output end is electrically connected to the first motor, the second motor, the blower and the electric push rod respectively.

[0010] The present invention is further configured as follows: sliding rods are symmetrically fixed between the inner walls of the first mounting box; a sliding part slidably matched with the sliding rods is slidably arranged between the inner walls of the first mounting box; the sliding part includes a fixed seat; sliding holes slidably matched with the sliding rods are symmetrically formed on the side surface of the fixed seat; reset springs sleeved on the corresponding sliding rods are symmetrically fixedly connected between the fixed seat and the inner wall of the first mounting box; vertical plates are symmetrically fixed on the top of the fixed seat; guide grooves are formed on the side surfaces of the vertical plates; a lifting part is slidably arranged between the two guide grooves.

[0011] The present invention is further configured as follows: the lifting part includes a lifting plate; guide plates slidably matched with the guide grooves are fixed on both opposite side surfaces of the lifting plate; a tension spring is fixedly connected between the guide plate and the inner top of the guide groove; a guide ball adapted to the inclined guide groove is fixed on the top of the lifting plate; a guide hole is formed on the top of the fixed seat; a lifting rod slidably matched with the guide hole is fixed on the bottom surface of the lifting plate; a first ball head is fixed at the bottom end of the lifting rod.

[0012] The present invention is further configured as follows: first guide grooves are symmetrically and obliquely arranged downward on the inner walls of the first mounting box; second guide grooves communicated with the bottom ends of the corresponding first guide grooves are formed on the inner walls of the first mounting box; limiting rods are symmetrically fixed on the top of the fixed seat; a pushing part slidably matched with the limiting rods is slidably arranged between the two vertical plates; the pushing part includes a pushing plate; a plurality of dial plates are fixed on the bottom surface of the pushing plate; a first avoidance groove slidably matched with a connecting shaft is formed on the side surface of the pushing plate; extension plates are symmetrically fixed on the side surface of the pushing plate; second avoidance grooves slidably matched with the extension plates are symmetrically formed on the inner walls of the first mounting box; lifting grooves slidably matched with the vertical plates are formed on the surface of the extension plate near its end; limiting holes slidably matched with the limiting rods are formed on the surface of the extension plate; ear rods are fixed on the side surface of the extension plate; a second ball head slidably matched with the first guide groove and the second guide groove is fixed at the end of the ear rod.

[0013] The present invention is further configured as follows: a dust collection box is slidably arranged through the inner wall of the furnace chamber; a maintenance box is fixed to the top of the heating chamber; a threaded ring is fixed to the top of the maintenance box; a sealing cover is screwed onto the threaded ring; a smoke exhaust pipe is communicated with the circumferential side of the maintenance box; a steam delivery pipe is arranged through the top of the heating chamber; a water inlet pipe and a water outlet pipe are sequentially communicated through the inner wall of the heating chamber; a steam pressure gauge and a temperature sensor electrically connected to the input and output ends of the controller are sequentially arranged through the inner wall of the heating chamber near its inner top; electromagnetic valves electrically connected to the output end of the controller are arranged on the water inlet pipe, the water outlet pipe and the steam delivery pipe; a plurality of heat conduction pipes are uniformly arranged through the interior of the heating chamber; both ends of the heat conduction pipe are communicated with the maintenance box and the furnace chamber respectively; a plurality of heat conduction protrusions are arranged on the heat conduction pipe and the heat conduction plate.

[0014] The advantages of the present invention are as follows:

[0015] 1. By controlling the rotation of the horizontal auger, the biomass fuel is conveyed to the curved grate for combustion. During the rotation of the horizontal auger, the turning part is driven to rotate around the curved grate. When the curved feeding cylinder rotates to directly below the discharge chute, the biomass fuel at the bottom of the curved grate falls into the curved feeding cylinder. As the curved feeding cylinder rotates and rises above the curved grate, under the action of gravity, the biomass fuel in the curved feeding cylinder falls back onto the curved grate, realizing the turning of the biomass fuel and preventing the biomass particles from not being fully burned inside the boiler, thereby improving the combustion effect of the boiler.

[0016] 2. During the process of the horizontal auger conveying the biomass fuel, through the linkage cooperation between the horizontal auger, the pushing part and each component, the pushing part realizes the one-way pushing and leveling of the biomass fuel inside the curved grate, and cooperates with the turning part to turn the biomass particles, effectively avoiding the new fuel from directly covering the burning fuel in a large area, and improving the use effect of the boiler. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a biomass water tube steam boiler of the present invention.

[0018] Figure 2 For the present invention Figure 1 A schematic structural diagram from another angle.

[0019] Figure 3 It is a schematic structural diagram of the boiler body of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the combustion device of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the feeding part of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the material turning part of the present invention.

[0023] Figure 7 of the present invention Figure 6 Partial cross-sectional view from the right viewing angle.

[0024] Figure 8 It is a schematic structural diagram of the sliding part of the present invention.

[0025] Figure 9 It is a schematic structural diagram of the lifting part of the present invention.

[0026] Figure 10 It is a schematic structural diagram of the sliding plate of the present invention.

[0027] Figure 11 It is a schematic structural diagram of the material pushing part of the present invention.

[0028] Figure 12 It is a schematic structural diagram of the assembly of the material feeding part and the material pushing part of the present invention.

[0029] Figure 13 It is a schematic structural diagram of the initial state of the lifting part and the material pushing part of the present invention.

[0030] Figure 14 It is a schematic structural diagram of the material pushing part in the state of sliding and pushing materials of the present invention.

[0031] Figure 15 It is a schematic structural diagram of the material pushing part before the end of material pushing of the present invention.

[0032] Figure 16 It is a schematic structural diagram of the material pushing part after the end of material pushing of the present invention.

[0033] Figure 17 It is a schematic structural diagram of the lifting part and the material pushing part during the reverse sliding and resetting process of the present invention.

[0034] In the figure: 1, boiler body; 2, heat conduction plate; 3, heating chamber; 4, furnace chamber; 5, combustion device; 6, installation opening; 7, feeding part; 8, horizontal feeding cylinder; 9, curved furnace grate; 10, horizontal auger; 11, material turning part; 12, fixing plate; 13, annular plate; 14, heat conduction pipe; 15, curved material turning cylinder; 16, curved scraping plate; 17, ash discharge hole; 18, ash discharge chute; 19, discharge chute; 20, first motor; 21, vertical feeding cylinder; 22, conical feed box; 23, mounting plate; 24, second motor; 25, vertical auger; 26, connecting shaft; 27, connecting ring; 28, connecting flange; 29, first mounting box; 30, blower; 31, second mounting box; 32, electric push rod; 33, sliding plate; 34, inclined guide groove; 35, first baffle; 36, second baffle; 37, sliding rod; 38, sliding part; 39, fixed seat; 40, sliding hole; 41, return spring; 42, vertical plate; 43, guide groove; 44, lifting part; 45, lifting plate; 46, guide plate; 47, tension spring; 48, guide ball; 49, guide hole; 50, lifting rod; 51, first ball head; 52, limiting rod; 53, material pushing part; 54, material pushing plate; 55, dialing plate; 56, first avoidance groove; 57, extension plate; 58, second avoidance groove; 59, lifting groove; 60, limiting hole; 61, ear rod; 62, second ball head; 63, ash collecting box; 64, maintenance box; 65, threaded ring; 66, smoke exhaust pipe; 67, steam conveying pipe; 68, water inlet pipe; 69, water outlet pipe; 70, steam pressure gauge; 71, temperature sensor; 72, second guide groove. Detailed implementation mode

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0036] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0037] In the present invention, unless otherwise stated, the directions such as "up, down" are generally in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are generally left and right as shown in the drawings; "inside, outside" refer to inside and outside the contours of the respective components, but the above orientation terms do not limit the present invention.

[0038] Embodiment 1, please refer to Figure 1-17 , the present invention provides the following technical solutions:

[0039] A biomass water-tube steam boiler, specifically, includes a boiler body 1; a heat conduction plate 2 is fixed between the inner walls of the boiler body 1; the heat conduction plate 2 divides the boiler body 1 into a heating chamber 3 and a furnace chamber 4; a combustion device 5 that is rotationally matched with the inner wall of the furnace chamber 4 is fixedly installed on the side of the boiler body 1; an installation opening 6 is provided on the inner wall of the furnace chamber 4; the combustion device 5 includes a feeding part 7; the feeding part 7 includes a transverse feeding cylinder 8; a curved grate 9 is fixed at the end of the transverse feeding cylinder 8; a transverse auger 10 is rotatably arranged through the inside of the transverse feeding cylinder 8; the end of the transverse auger 10 is fixedly connected to a turning part 11 that is coaxially arranged with the curved grate 9; the turning part 11 includes a fixing plate 12; an annular plate 13 is fixed on the side of the fixing plate 12; an annular groove that is rotationally matched with the annular plate 13 is provided on the inner wall of the furnace chamber 4; a plurality of curved transfer cylinders 15 that are rotationally matched with the outer peripheral side of the curved grate 9 are evenly fixed on the side of the fixing plate 12, and a curved scraping plate 16 that is rotationally matched with the inner peripheral side of the curved grate 9 is fixed between adjacent two curved transfer cylinders 15 on its side; a plurality of ash discharge holes 17 are evenly provided on the inner wall of the curved transfer cylinder 15; a plurality of ash discharge grooves 18 are evenly provided on the inner wall of the curved scraping plate 16; a discharge groove 19 is provided on the inner wall of the curved grate 9.

[0040] Working principle of Embodiment 1:

[0041] By controlling the rotation of the transverse auger 10, the biomass fuel is transported to the curved grate 9 for combustion. During the rotation of the transverse auger 10, the turning part 11 is driven to rotate around the curved grate 9. When the curved transfer cylinder 15 rotates to directly below the discharge groove 19, the biomass fuel at the bottom of the curved grate 9 falls into the curved transfer cylinder 15. As the curved transfer cylinder 15 rotates and rises above the curved grate 9, under the action of gravity, the biomass fuel in the curved transfer cylinder 15 falls back into the curved grate 9, realizing the turning of the biomass fuel and preventing the biomass particles from not being fully burned inside the boiler body 1, improving the combustion effect of the boiler body 1; during the process of the transverse auger 10 transporting the biomass fuel, through the linkage cooperation between the transverse auger 10, the pusher part 53 and each component, the pusher part 53 realizes the one-way pushing and leveling of the biomass fuel inside the curved grate 9, cooperating with the turning of the turning part 11 for the biomass particles, effectively avoiding the new fuel from directly covering the burning fuel in a large area, and improving the use effect of the boiler body 1.

[0042] Embodiment 2, please refer to Figure 1-17, in the second embodiment, the following improvements are made on the basis of the first embodiment. Specifically, a first motor 20 is fixedly installed at the end of the horizontal feeding cylinder 8; the output end of the first motor 20 is fixedly connected to one end of the horizontal auger 10 through a speed reducer; a vertical feeding cylinder 21 is communicated with the circumferential side surface of the horizontal feeding cylinder 8; the top end of the vertical feeding cylinder 21 is communicated with a conical feed hopper 22; a mounting plate 23 is fixed at the top end of the conical feed hopper 22; a second motor 24 is fixedly installed on the top of the mounting plate 23; a vertical auger 25 is rotatably arranged through the bottom surface of the mounting plate 23; the output end of the second motor 24 is fixedly connected to the end of the vertical auger 25.

[0043] A connecting shaft 26 is fixed to the side surface of the fixing plate 12; the end of the connecting shaft 26 is connected to the end of the horizontal auger 10 through a heat insulation layer; the heat insulation layer is an axial heat insulation layer, and its material is made of aerogel felt and fixed with hinge bolts; a connecting ring 27 is fixed between the ends of each curved surface feeding cylinder 15; a connecting flange 28 placed outside the mounting port 6 is fixed to the circumferential side surface of the horizontal auger 10; the connecting flange 28 is fixedly installed on the side surface of the boiler body 1 through fastening bolts.

[0044] The working principle of the second embodiment:

[0045] The output ends of the first motor 20 and the second motor 24 are respectively connected to the horizontal auger 10 and the vertical auger 25 through speed reducers. By controlling the start of the second motor 24 to drive the vertical auger 25 to rotate slowly, the biomass fuel in the conical feed hopper 22 is conveyed into the horizontal feeding cylinder 8 through the vertical feeding cylinder 21. Synchronously controlling the start of the first motor 20 to drive the horizontal auger 10 to rotate slowly, the biomass fuel continuously conveyed from the vertical feeding cylinder 21 is conveyed to the curved furnace grate 9 to complete the conveyance of the biomass fuel.

[0046] The end of the connecting shaft 26 is connected to the end of the horizontal auger 10 through an aerogel felt heat insulation layer, which reduces the heat transferred to each component on the shaft, can effectively isolate the axial heat transfer of the transmission shaft, and at the same time can ensure that the transmission shaft can transmit power normally. For specific relevant content, reference can be made to a high-temperature resistant shafting heat insulation structure with the publication number CN209925876U, which will not be elaborated here.

[0047] Each group of curved surface scraping plates 16 are rotatably engaged with the inner peripheral side surface of the curved surface grate 9, and each group of curved surface charging cylinders 15 are rotatably engaged with the outer peripheral side surface of the curved surface grate 9. Each group of curved surface scraping plates 16 and curved surface charging cylinders 15 are arranged alternately in sequence. When the curved surface charging cylinder 15 rotates to the lower part of the discharge chute 19, the biomass fuel on the inner bottom surface of the curved surface grate 9 falls into the corresponding curved surface charging cylinder 15 through the discharge chute 19, and then rises and disengages from the discharge chute 19 as the curved surface charging cylinder 15 rotates. The adjacent curved surface scraping plates 16 rotate synchronously to block the discharge chute 19. During this process, the curved surface scraping plates 16 turn the biomass fuel inside the curved surface grate 9, further improving the combustion effect of the biomass fuel; most of the furnace ash generated during the combustion process falls into the ash collection box 63 through the ash discharge holes 17 and the ash discharge chute 18 and is collected.

[0048] Embodiment 3, please refer to Figure 1-17 , on the basis of Embodiment 2, the following improvements are made in this Embodiment 3. Specifically, a first installation box 29 is communicated and arranged on the outer peripheral side surface of the transverse feeding cylinder 8; a blower 30 is installed on the top of the first installation box 29; the output end of the blower 30 extends into the inside of the first installation box 29; a second installation box 31 is communicated and arranged on the top of the first installation box 29; an electric push rod 32 is fixedly installed through the top of the second installation box 31; a sliding plate 33 that is slidably engaged with the inner wall of the second installation box 31 is fixed to the telescopic end of the electric push rod 32; an inclined guide groove 34 is formed on the bottom surface of the sliding plate 33; a controller is installed on the top of the second installation box 31; a first baffle 35 and a second baffle 36 are fixedly arranged on the bottom surface of the inclined guide groove 34 in sequence; a first pressure sensor and a second pressure sensor are installed on the side surfaces of the first baffle 35 and the second baffle 36 in sequence; the input end of the controller is electrically connected to the first pressure sensor and the second pressure sensor respectively, and its output end is electrically connected to the first motor 20, the second motor 24, the blower 30 and the electric push rod 32 respectively.

[0049] Sliding rods 37 are symmetrically fixed between the inner walls of the first installation box 29; a sliding part 38 that is slidably engaged with the sliding rods 37 is slidably arranged between the inner walls of the first installation box 29; the sliding part 38 includes a fixed seat 39; sliding holes 40 that are slidably engaged with the sliding rods 37 are symmetrically formed on the side surface of the fixed seat 39; return springs 41 sleeved on the corresponding sliding rods 37 are symmetrically fixedly connected between the fixed seat 39 and the inner wall of the first installation box 29; vertical plates 42 are symmetrically fixed on the top of the fixed seat 39; guide grooves 43 are formed on the side surfaces of the vertical plates 42; a lifting part 44 is slidably arranged between the two guide grooves 43.

[0050] The lifting part 44 includes a lifting plate 45; guide plates 46 that are slidably engaged with the guide grooves 43 are fixed to both opposite side surfaces of the lifting plate 45; a tension spring 47 is fixedly connected between the guide plates 46 and the inner top of the guide grooves 43; a guide ball 48 adapted to the inclined guide groove 34 is fixed to the top of the lifting plate 45; a guide hole 49 is formed in the top of the fixed seat 39; a lifting rod 50 that is slidably engaged with the guide hole 49 is fixed to the bottom surface of the lifting plate 45; a first ball head 51 is fixed to the bottom end of the lifting rod 50.

[0051] First guide grooves 43 are symmetrically and obliquely formed downward on the inner wall of the first mounting box 29; second guide grooves 72 communicating with the bottom ends of the corresponding first guide grooves 43 are formed in the inner wall of the first mounting box 29.

[0052] Limit rods 52 are symmetrically fixed to the top of the fixed seat 39; a material pushing part 53 that is slidably engaged with the limit rods 52 is slidably arranged between the two vertical plates 42; the material pushing part 53 includes a material pushing plate 54; a plurality of dial plates 55 are fixed to the bottom surface of the material pushing plate 54; a first avoidance groove 56 that is slidably engaged with the connecting shaft 26 is formed in the side surface of the material pushing plate 54; extension plates 57 are symmetrically fixed to the side surface of the material pushing plate 54; second avoidance grooves 58 that are slidably engaged with the extension plates 57 are symmetrically formed in the inner wall of the first mounting box 29; a lifting groove 59 that is slidably engaged with the vertical plate 42 is formed in the surface of the extension plate 57 near its end; a limit hole 60 that is slidably engaged with the limit rod 52 is formed in the surface of the extension plate 57; an ear rod 61 is fixed to the side surface of the extension plate 57; a second ball head 62 that is slidably engaged with the first guide groove 43 and the second guide groove 72 is fixed to the end of the ear rod 61.

[0053] The working principle of the third embodiment:

[0054] In the initial state, the sliding plate 33 is stored inside the second mounting box 31. At this time, the second ball head 62 at the end of the extension plate 57 is placed at the high position of the first guide groove 43, that is, the extension plate 57 together with the material pushing plate 54 at its end is located near the discharge end of the horizontal feeding cylinder 8 and far from the return curved furnace grate 9. Under the pulling force of the tension spring 47, the lifting rod 50 is driven to slide upward along the guide hole 49 until the guide ball 48 abuts against the lowest position of the inclined guide groove 34. At this time, the first ball head 51 does not contact the spiral blade on the horizontal auger 10.

[0055] Control the start of the electric push rod 32 to extend it, driving the slide plate 33 to descend along the inner wall of the second mounting box 31, thereby squeezing the lifting part 44 to slide down along the guide hole 49 until the lifting rod 50 extends between two adjacent spiral blades of the horizontal auger 10. The rotating horizontal auger 10 drives the lifting rod 50 to slide in a direction away from the conical feed bin 22, and the return spring 41 is stretched. During this process, the extension plate 57 is driven to slide synchronously. During the sliding process of the extension plate 57, the second ball head 62 is driven to slide in the guide groove 43, thereby driving the extension plate 57 to slide forward and descend at the same time, and further driving the pushing plate 54 to slide forward and descend at the same time and insert into the biomass fuel, spreading out the piled-up biomass fuel to avoid the biomass fuel conveyed down from accumulating in the horizontal feeding cylinder 8; during this process, under the pulling force of the tension spring 47, the guide ball 48 slides upward along the inclined guide groove 34, driving the lifting rod 50 to gradually slide upward (during this process, the lifting rod 50 remains in contact with the spiral blade of the horizontal auger 10).

[0056] When the lifting plate 45 on the lifting part 44 rises to contact the second pressure sensor on the second baffle 36, the first ball head 51 at the bottom of the lifting rod 50 disengages from the spiral blade on the horizontal auger 10, and the pushing part 53 does not slide along with the rotation of the horizontal auger 10. At this time, the second pressure sensor transmits a signal to the controller, and the controller controls the electric push rod 32 to contract, driving the slide plate 33 to slide upward and be received inside the second mounting box 31, causing the guide ball 48 to disengage from the inclined guide groove 34. Under the elastic reset force of the return spring 41, the sliding part 38, together with the lifting part 44 and the pushing part 53, slides synchronously in the reverse direction to reset. During the reverse sliding and resetting process of the pushing part 53, the second ball head 62 on it slides and rises under the guiding action of the guide groove 43, so that the pushing plate 54 disengages from the biomass fuel during the reverse sliding and resetting process, realizing the one-way pushing of the pushing part 53.

[0057] When the lifting plate 45 on the lifting part 44 slides upward in the reverse direction and contacts the first pressure sensor on the first baffle 35, the first pressure sensor transmits a signal to the controller, and the controller controls the start of the electric push rod 32 to extend it, driving the slide plate 33 to descend along the inner wall of the second mounting box 31, thereby squeezing the lifting part 44 to slide down along the guide hole 49 until the lifting rod 50 extends between two adjacent spiral blades of the horizontal auger 10. The rotating horizontal auger 10 drives the lifting rod 50 to slide in a direction away from the conical feed bin 22, completing one cycle of actions and repeating continuously to realize the continuous one-way pushing of the biomass fuel.

[0058] Example 4, please refer to Figure 1-17, in the fourth embodiment, the following improvements are made on the basis of the third embodiment. Specifically, an ash collecting box 63 is slidably arranged through the inner wall of the furnace chamber 4; a maintenance box 64 is fixed at the top of the heating chamber 3; a threaded ring 65 is fixed at the top of the maintenance box 64; a sealing cover is screwed on the threaded ring 65; a smoke exhaust pipe 66 is communicated with the peripheral side surface of the maintenance box 64; a steam delivery pipe 67 is arranged through the top of the heating chamber 3; a water inlet pipe 68 and a water outlet pipe 69 are sequentially communicated through the inner wall of the heating chamber 3; a steam pressure gauge 70 and a temperature sensor 71, which are electrically connected to the input and output ends of the controller, are sequentially arranged through the inner wall of the heating chamber 3 near its inner top; electromagnetic valves, which are electrically connected to the output end of the controller, are arranged on the water inlet pipe 68, the water outlet pipe 69 and the steam delivery pipe 67; a plurality of heat conduction pipes 14 are uniformly arranged through the inside of the heating chamber 3; both ends of the heat conduction pipe 14 are communicated with the maintenance box 64 and the furnace chamber 4 respectively; a plurality of heat conduction protrusions are arranged on both the heat conduction pipe 14 and the heat conduction plate 2.

[0059] The working principle of the fourth embodiment:

[0060] Water is supplemented into the heating chamber 3 through the water inlet pipe 68, and the heat conduction plate 2 is heated by the combustion of biomass fuel, so as to heat the water inside the heating chamber 3. The heated water forms water vapor and is discharged for utilization through the steam delivery pipe 67; the high-temperature flue gas generated during the combustion process of biomass fuel passes through each group of heat conduction pipes 14 to heat the water in the heating chamber 3, improving the utilization efficiency of the high-temperature flue gas. The flue gas after heat exchange enters the maintenance box 64 and is discharged through the smoke exhaust pipe 66.

[0061] Regularly dredge and clean each group of heat conduction pipes 14 in the boiler body that has stopped working. Remove the sealing cover, and use a dredging rod adapted to the heat conduction pipe 14 to dredge each group of heat conduction pipes 14 in turn, and clean the dust and dirt adhering to the inner wall of the heat conduction pipe 14. The cleaned dust and dirt fall into the ash collecting box 63 and are collected, improving the practicability of the device.

[0062] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0063] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0066] The above is only the preferred implementation mode of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A biomass water-tube steam boiler, comprising a boiler body (1); characterized in that: A heat conducting plate (2) is fixed between the inner walls of the boiler body (1); the heat conducting plate (2) divides the boiler body (1) into a heating chamber (3) and a furnace chamber (4); a combustion device (5) which is rotationally matched with the inner wall of the furnace chamber (4) is fixedly installed on the side of the boiler body (1); An installation opening (6) is formed in the inner wall of the furnace chamber (4); the combustion device (5) comprises a feeding part (7); the feeding part (7) comprises a transverse feeding cylinder (8); a curved furnace grate (9) is fixed at the end of the transverse feeding cylinder (8); a transverse auger (10) is rotatably arranged through the inside of the transverse feeding cylinder (8); One end of the transverse auger (10) is fixedly connected with a turning part (11) which is coaxially arranged with the curved furnace grate (9); the turning part (11) comprises a fixing plate (12); an annular plate (13) is fixed on the side of the fixing plate (12); an annular groove which is rotationally matched with the annular plate (13) is formed in the inner wall of the furnace chamber (4); A plurality of curved material turning cylinders (15) which are rotationally matched with the outer peripheral side of the curved furnace grate (9) are uniformly fixed on the side of the fixing plate (12), and a curved scraping plate (16) which is rotationally matched with the inner peripheral side of the curved furnace grate (9) is fixed between adjacent two of the curved material turning cylinders (15) on the side thereof; A plurality of ash discharging holes (17) are uniformly formed in the inner wall of the curved material turning cylinder (15); a plurality of ash discharging grooves (18) are uniformly formed in the inner wall of the curved scraping plate (16); a material discharging groove (19) is formed in the inner wall of the curved furnace grate (9).

2. The biomass water-tube steam boiler according to claim 1, characterized in that: A first motor (20) is fixedly installed at the end of the transverse feeding cylinder (8); the output end of the first motor (20) is fixedly connected with one end of the transverse auger (10) through a speed reducer; a vertical feeding cylinder (21) is communicated with the peripheral side of the transverse feeding cylinder (8); a conical feed hopper (22) is communicated with the top end of the vertical feeding cylinder (21); An installation plate (23) is fixed at the top end of the conical feed hopper (22); a second motor (24) is fixedly installed on the top of the installation plate (23); a vertical auger (25) is rotatably arranged through the bottom surface of the installation plate (23); the output end of the second motor (24) is fixedly connected with the end of the vertical auger (25).

3. The biomass water-tube steam boiler according to claim 2, characterized in that: A connecting shaft (26) is fixed on the side of the fixing plate (12); one end of the connecting shaft (26) is connected with one end of the transverse auger (10) through a heat insulation layer; the heat insulation layer is an axial heat insulation layer, the material thereof is aerogel felt, and it is fixed by using precision reamed bolts; a connecting ring (27) is fixed between the ends of the curved material turning cylinders (15); A connecting flange (28) which is arranged outside the installation opening (6) is fixed on the peripheral side of the transverse auger (10); the connecting flange (28) is fixedly installed on the side of the boiler body (1) through fastening bolts.

4. A biomass water-tube steam boiler according to claim 3, characterized in that: A first mounting box (29) is communicatively provided on the outer peripheral side of the lateral feeding cylinder (8); a blower (30) is mounted on the top of the first mounting box (29); the output end of the blower (30) extends into the interior of the first mounting box (29); a second mounting box (31) is communicatively provided on the top of the first mounting box (29); an electric push rod (32) is fixedly penetrated through the top of the second mounting box (31); The telescopic end of the electric push rod (32) is fixed with a slide plate (33) slidably matched with the inner wall of the second mounting box (31); an inclined guide groove (34) is formed on the bottom surface of the slide plate (33); A controller is mounted on the top of the second mounting box (31); a first baffle (35) and a second baffle (36) are sequentially fixed on the bottom surface of the inclined guide groove (34); a first pressure sensor and a second pressure sensor are sequentially mounted on the sides of the first baffle (35) and the second baffle (36); the input end of the controller is electrically connected to the first pressure sensor and the second pressure sensor respectively, and its output end is electrically connected to the first motor (20), the second motor (24), the blower (30) and the electric push rod (32) respectively.

5. A biomass water-tube steam boiler according to claim 4, characterized in that: Sliding rods (37) are symmetrically fixed between the inner walls of the first mounting box (29); a sliding part (38) slidably matched with the sliding rods (37) is slidably arranged between the inner walls of the first mounting box (29); the sliding part (38) includes a fixed seat (39); sliding holes (40) slidably matched with the sliding rods (37) are symmetrically formed on the side surface of the fixed seat (39); reset springs (41) sleeved on the corresponding sliding rods (37) are symmetrically fixedly connected between the fixed seat (39) and the inner wall of the first mounting box (29); Vertical plates (42) are symmetrically fixed on the top of the fixed seat (39); guide grooves (43) are formed on the side surfaces of the vertical plates (42); a lifting part (44) is slidably arranged between the two guide grooves (43).

6. A biomass water-tube steam boiler according to claim 5, characterized in that: The lifting part (44) includes a lifting plate (45); guide plates (46) slidably matched with the guide grooves (43) are fixed on both opposite side surfaces of the lifting plate (45); a tension spring (47) is fixedly connected between the guide plate (46) and the inner top of the guide groove (43); a guide ball (48) adapted to the inclined guide groove (34) is fixed on the top of the lifting plate (45); a guide hole (49) is formed on the top of the fixed seat (39); a lifting rod (50) slidably matched with the guide hole (49) is fixed on the bottom surface of the lifting plate (45); a first ball head (51) is fixed at the bottom end of the lifting rod (50).

7. A biomass water-tube steam boiler according to claim 6, characterized in that: The inner wall of the first installation box (29) is symmetrically and obliquely provided with downward-opening first guide grooves (43); the inner wall of the first installation box (29) is provided with second guide grooves (72) communicating with the bottom ends of the corresponding first guide grooves (43). The top of the fixed seat (39) is symmetrically fixed with limit rods (52); a material pushing part (53) slidably matched with the limit rods (52) is slidably arranged between the two vertical plates (42); the material pushing part (53) includes a material pushing plate (54); the bottom surface of the material pushing plate (54) is fixedly connected with a plurality of dial plates (55); a first avoidance groove (56) slidably matched with the connecting shaft (26) is formed in the side surface of the material pushing plate (54). The side surface of the material pushing plate (54) is symmetrically fixed with extension plates (57); the inner wall of the first installation box (29) is symmetrically provided with second avoidance grooves (58) slidably matched with the extension plates (57); a lifting groove (59) slidably matched with the vertical plate (42) is formed in the surface of the extension plate (57) near its end; a limit hole (60) slidably matched with the limit rod (52) is formed in the surface of the extension plate (57); an ear rod (61) is fixed to the side surface of the extension plate (57); a second ball head (62) slidably matched with the first guide groove (43) and the second guide groove (72) is fixed to the end of the ear rod (61).

8. The biomass water-tube steam boiler according to claim 7, wherein: A dust collecting box (63) is slidably arranged through the inner wall of the furnace chamber (4); a maintenance box (64) is fixed to the top of the heating chamber (3); a threaded ring (65) is fixed to the top of the maintenance box (64); a sealing cover is screwed onto the threaded ring (65); an exhaust pipe (66) is communicated with the peripheral side surface of the maintenance box (64). A steam delivery pipe (67) is arranged through the top of the heating chamber (3); a water inlet pipe (68) and a water outlet pipe (69) are sequentially communicated through the inner wall of the heating chamber (3); a steam pressure gauge (70) and a temperature sensor (71) electrically connected to the input and output ends of the controller are sequentially arranged through the inner wall of the heating chamber (3) near its inner top; solenoid valves electrically connected to the output end of the controller are arranged on the water inlet pipe (68), the water outlet pipe (69) and the steam delivery pipe (67). A plurality of heat conduction pipes (14) are uniformly arranged through the inside of the heating chamber (3); the two ends of the heat conduction pipe (14) are respectively communicated with the maintenance box (64) and the furnace chamber (4); a plurality of heat conduction protrusions are arranged on the heat conduction pipe (14) and the heat conduction plate (2).

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