An efficient and energy-saving biomass boiler combustion device

Abstract

The present invention relates to the technical field of biomass combustion equipment for boilers, and discloses an efficient and energy-saving biomass boiler combustion equipment, which includes a combustion furnace, a blower and an integrated heat energy recovery system. A heat utilization part on the outer wall of the combustion chamber formed by serpentine heat exchange tubes is arranged in the combustion furnace, and the waste heat steam circulation is realized through the linkage of a water level sensor and a solenoid valve; the steaming part adopts a nested structure of a spiral tube and an inner liner, and the combustion waste heat is introduced through a steam pipe to perform on-line drying on high-moisture fuel, and the water vapor is discharged through a net structure; the clogging removal device rotates and disturbs the arc cone plate through an electric drive mechanism, and realizes the intelligent dredging of the feeding channel in combination with the opening and closing control of the folding cylinder. The present invention innovatively constructs a heat energy closed-loop utilization system, realizes the self-drying of fuel and the optimization of combustion stability, solves the technical problems of low waste heat utilization rate of traditional equipment and incomplete combustion of wet fuel, improves the thermal efficiency of biomass fuel, and is particularly suitable for continuous and efficient combustion operations in high-humidity weather or environments.

Description

Technical Field

[0001] The invention relates to the technical field of biomass fuel combustion equipment, and in particular to a high-efficiency and energy-saving biomass boiler combustion equipment. Background Art

[0002] Biomass burners, as equipment that provides a heating source for boilers, usually burn biomass fuel pellets. Their combustion efficiency and fuel adaptability are directly related to energy utilization. Existing biomass combustion equipment usually has the problem of insufficient fuel pretreatment. Especially in humid weather or environment, biomass fuel pellets are not fully burned and have a significant loss of calorific value due to insufficient dryness. Traditional solutions mostly rely on external heat sources to pre-dry the fuel, but the additional energy consumption is high and the system is complex. In addition, the efficiency of waste heat recovery is low, and a large amount of heat energy is lost through the flue, further exacerbating energy waste. How to use the waste heat from combustion to achieve fuel self-drying and optimize combustion stability has become a key problem in improving the energy efficiency of biomass boilers.

[0003] Existing biomass combustion equipment cannot effectively utilize the waste heat from combustion to pre-treat biomass fuel particles that are not dry enough in humid weather or environment, resulting in decreased combustion efficiency and energy waste. Summary of the invention

[0004] The present invention provides a high-efficiency and energy-saving biomass boiler combustion equipment, which effectively utilizes combustion waste heat, realizes closed-loop utilization of thermal energy, and processes biomass fuel particles with insufficient dryness, thereby improving the combustion efficiency and effect of biomass fuel particles and reducing energy waste.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] In the first aspect, a high-efficiency and energy-saving biomass boiler combustion device comprises a combustion furnace and a bellows connected to one side of the combustion furnace, the combustion furnace is provided with a furnace cover, a heat insulation tile is fixed in the combustion furnace, a combustion chamber is provided in the heat insulation tile, an auger is connected to the furnace cover, an input end of the auger is connected to a receiving hopper, a nozzle is connected to the other side of the combustion furnace, and the nozzle is connected to the combustion chamber, and further comprises:

[0007] The heat benefit part includes a heat collecting part and a steam part. The heat collecting part is arranged outside the combustion chamber. The steam part is connected to the heat collecting part and passes through the furnace cover. The heat collecting part includes a heat exchange tube arranged in a serpentine shape outside the combustion chamber, a water level sensor for monitoring the water level of the heat exchange tube and a solenoid valve for controlling the water flow input. The steam part includes a steam pipe connected to the heat exchange tube to recover the waste heat of combustion to generate steam.

[0008] The steam-feeding part, which includes a material-feeding component and a steam-transporting component. The material-feeding component is arranged in the material-receiving hopper, and the steam-transporting component is arranged on one side of the material-feeding component and penetrates through the material-receiving hopper to be connected with the steam component. The material-feeding component includes a spiral tube, an inner tank, and a folding cylinder inside the material-receiving hopper. The steam-transporting component includes an L-shaped tube communicated with the steam pipe to dry biomass fuel particles by using steam;

[0009] The clogging-removing part, which includes a rotatable rotating ring, a conical arc plate penetrating through the rotating ring, and an electric rod for driving the conical arc plate to move to dredge fuel blockage.

[0010] Furthermore, the heat-collecting component includes:

[0011] There is a cavity between the heat-insulating tile and the combustion chamber;

[0012] The heat-exchanging tube is arranged in the cavity, meanders in a snake shape outside the combustion chamber, and fits with the combustion chamber;

[0013] There are two water level sensors, which penetrate through the heat-exchanging tube;

[0014] One of the water level sensors is close to the input end of the heat-exchanging tube, and the other water level sensor is close to the output end of the heat-exchanging tube;

[0015] The electromagnetic valve is fixed at the input end of the heat-exchanging tube.

[0016] Furthermore, the steam component includes:

[0017] The steam pipe penetrates through the furnace cover, and one end is communicated with the heat-exchanging tube;

[0018] The electric control three-way valve is connected to the other end of the steam pipe;

[0019] Flange plates are respectively connected to the electric control three-way valve and the output end of the heat-exchanging tube.

[0020] Furthermore, the material-feeding component includes:

[0021] The spiral tube is fixedly connected to the inner side of the material-receiving hopper through a fixing component;

[0022] The feeding hopper is fixed at one end of the spiral tube;

[0023] The inner tank is arranged inside the spiral tube, and both ends are covered by the spiral tube, having the same shape as the spiral tube and being integrally formed with the spiral tube;

[0024] The folding cylinder has one end fixed to the other end of the spiral tube and is communicated with the output end of the feeding hopper;

[0025] The adjusting part movably penetrates through one side of the material-receiving hopper and is connected to the folding cylinder.

[0026] Furthermore, the adjusting part includes:

[0027] A limiting plate is fixed on the outside of the spiral tube;

[0028] A pull plate is fixed on the outside of the folding cylinder and close to the bottom end of the folding cylinder;

[0029] A pull rope movably passes through the receiving hopper and the limit plate, and one end of the pull rope is fixedly connected to the pull plate;

[0030] An elastic cord, one end of which is fixedly connected to the other end of the pull rope;

[0031] The stator part is connected to the other end of the elastic rope.

[0032] Further, the steam transport component includes:

[0033] The water vapor net is set through the spiral tube and the side of the inner tank away from the auger;

[0034] L tube, one end of which is fixedly connected to the other end of the steam pipe through a connecting component, and the other end of which passes through the receiving hopper and is connected to the spiral tube;

[0035] Cotton sleeve, installed on the outside of the L tube;

[0036] A space is provided between the inner container and the spiral tube for steam to flow.

[0037] Further, the inferred sub-parts include:

[0038] The ring is sleeved on the outside of the cotton sleeve and fixedly connected to the other end of the elastic rope;

[0039] The loop line is carved on the outside of the cotton sleeve and is located on one side of the sleeve;

[0040] A ring groove is provided on the inner side of the collar;

[0041] A spring is arranged in the ring groove, and one end of the spring is fixedly connected to the collar;

[0042] The friction block is fixedly connected to the other end of the spring and has an arc and fits with the cotton sleeve.

[0043] Further, the dredging part includes a rotary pull member and a dredging member, the rotary pull member is rotatably arranged on the outside of the spiral tube and connected to the injection member, the dredging member is arranged through the rotary pull member and connected to the spiral tube, and the rotary pull member includes:

[0044] The square plate is fixed on the outside of the spiral tube, has a square inside and a round outside, and is close to the folding tube;

[0045] Bearing, fixed on the outside of the square plate;

[0046] A swivel ring, connected to the outside of the bearing;

[0047] There are multiple through holes, which are evenly opened throughout the rotating ring;

[0048] The pulling part is movably arranged through the material receiving hopper and is connected to the material injecting part.

[0049] Furthermore, the pulling part includes:

[0050] Two T-shaped rods are respectively fixed above the rotating ring and on one side of the collar.

[0051] The rocker is movably arranged through the material receiving hopper, and both ends are respectively rotatably connected to the two T-shaped rods.

[0052] The guide groove is formed through the material receiving hopper.

[0053] The guide plate is sleeved outside the rocker and is movably and guidingly connected to the guide groove.

[0054] Two elastic membranes are symmetrically arranged inside the guide groove, with one end fixedly connected to the material receiving hopper and the other end fixedly connected to the guide plate.

[0055] Furthermore, the inserting and separating part includes:

[0056] The switch is fixedly arranged through the limiting plate and is located above the pulling plate.

[0057] The electric rod is fixedly connected to the outside of the spiral pipe through a connecting component.

[0058] The semi-circular rod is arranged above the rotating ring, and one end is welded to the telescopic end of the electric rod through a connecting component.

[0059] There are multiple rubber bands, and one end is fixedly connected to the semi-circular rod.

[0060] There are multiple arc cone plates, which are respectively fixed to the other ends of the multiple rubber bands. One end is sharp, and the sharp end movably penetrates through the rotating ring.

[0061] The pressing plate is fixed outside the arc cone plate, is close to the top end of the arc cone plate, and contacts the semi-circular rod.

[0062] The above scheme of the present invention has at least the following beneficial effects:

[0063] By integrating the heat utilization part and the steaming part, the combustion waste heat is converted into steam and directionally transported to the spiral pipeline in the material receiving hopper. The biomass fuel is dried online by using the heat exchange principle, significantly reducing the fuel humidity and improving the combustion efficiency. At the same time, the closed-loop utilization of heat energy is realized, reducing the dependence on external energy, enabling the equipment to still operate stably in a humid environment and improving the comprehensive energy utilization rate. Description of the Drawings

[0064] Figure 1 It is a schematic perspective view of the overall structure of the high-efficiency and energy-saving biomass boiler combustion equipment provided by the embodiment of the present invention;

[0065] Figure 2 Schematic cross-sectional plane structure diagram of the combustion furnace provided by the embodiment of the present invention;

[0066] Figure 3 Schematic three-dimensional structure diagram of the combined cross-section of the heat exchange tube, L-shaped tube and cotton sleeve provided by the embodiment of the present invention;

[0067] Figure 4 Schematic three-dimensional structure diagram of the combined spiral tube, feed hopper, semi-circular rod and water vapor network provided by the embodiment of the present invention;

[0068] Figure 5 Schematic three-dimensional structure diagram of the combined cross-section of the spiral tube, collar and folding cylinder provided by the embodiment of the present invention;

[0069] Figure 6 Provided by the embodiment of the present invention Figure 1 Schematic structure diagram of location A in

[0070] Figure 7 Provided by the embodiment of the present invention Figure 4 Schematic structure diagram of location B in

[0071] Figure 8 Provided by the embodiment of the present invention Figure 5 Schematic structure diagram of location C in

[0072] Figure 9 Schematic three-dimensional structure diagram of the combined collar, elastic cord and rocker provided by the embodiment of the present invention;

[0073] Figure 10 Schematic three-dimensional structure diagram of the combined square-round plate, electric rod, rocker and arc cone plate provided by the embodiment of the present invention;

[0074] Figure 11 Schematic three-dimensional structure diagram of the rocker provided by the embodiment of the present invention;

[0075] Figure 12 Schematic three-dimensional structure diagram of the combined guide groove and guide plate provided by the embodiment of the present invention.

[0076] Explanation of reference numerals:

[0077] In the figure: 1, base; 2, combustion furnace; 3, furnace cover; 4, heat insulation tile; 5, combustion chamber; 6, observation window; 7, slag discharge pipe; 8, slag discharge door; 9, burner nozzle; 10, check pipe; 11, auger; 12, receiving hopper; 13, heat exchange pipe; 14, steam pipe; 15, water level sensor; 16, flange; 17, solenoid valve; 18, electric control three-way valve; 19, spiral pipe; 20, feeding hopper; 21, inner liner; 22, water vapor network; 23, L-shaped pipe; 24, cotton sleeve; 25, folding cylinder; 26, limit plate; 27, pull plate; 28, pull rope; 29, elastic cord; 30, collar; 31, loop line; 32, push rod; 33, annular groove; 34, spring; 35, friction block; 36, square and round plate; 37, bearing; 38, rotating ring; 39, through hole; 40, fixing plate; 41, T-shaped rod; 42, rotating sleeve; 43, rocker; 44, switch; 45, electric rod; 46, connecting plate; 47, semi-circular rod; 48, rubber band; 49, arc cone plate; 50, pressing plate; 51, guide groove; 52, guide plate; 53, elastic membrane; 54, air blower. Detailed implementation mode

[0078] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0079] As Figures 1 to 12 shown, an embodiment of the present invention provides an efficient and energy-saving biomass boiler combustion device, including a combustion furnace 2 and an air blower 54 connected to one side of the combustion furnace 2. A furnace cover 3 is provided on the combustion furnace 2. A heat insulation tile 4 is fixed inside the combustion furnace 2. A combustion chamber 5 is provided inside the heat insulation tile 4. An auger 11 is connected to the furnace cover 3. The input end of the auger 11 is connected to a receiving hopper 12. A burner nozzle 9 is connected to the other side of the combustion furnace 2, and the burner nozzle 9 is communicated with the combustion chamber 5. It further includes:

[0080] A heat utilization part, which is serpentinely arranged outside the combustion chamber 5 and penetrates through the furnace cover 3 to recover and utilize the combustion heat;

[0081] A steaming part, which is arranged in the receiving hopper 12, the output end is communicated with the output end of the receiving hopper 12, and penetrates through the receiving hopper 12 and is communicated with the heat utilization part to add combustion materials and utilize the recovered heat to dry the combustion materials;

[0082] A clogging removal part, which is rotatably arranged in the receiving hopper 12 and is connected to the steaming part to dredge the blockage between the receiving hopper 12 and the steaming part.

[0083] Specifically, the base 1 is fixed below the combustion furnace 2 and the bellows machine 54 to stably support the combustion furnace 2 and the bellows machine 54. An observation window 6 is disposed through the interior of the combustion furnace 2, and the observation window 6 penetrates through the heat insulation tile 4 and communicates with the combustion chamber 5. A slag discharge pipe 7 is disposed through the outside of the combustion furnace 2 and is located below the observation window 6. A slag leakage port is provided at the bottom end of the combustion chamber 5 to allow the combustion waste residue to leak down into the combustion furnace 2. One end of the slag discharge pipe 7 is connected to a slag discharge door 8 through a fixing member. The furnace cover 3 and the bellows machine 54 are connected with a check pipe 10, and the output end of the bellows machine 54 penetrates through the combustion furnace 2 and is connected to the combustion chamber 5. The receiving hopper 12 is made of a transparent material to facilitate the staff to penetrate the biomass fuel particles through the receiving hopper 12.

[0084] The base 1 can provide stable support for the combustion furnace 2 and the bellows machine 54. The bellows machine 54 can input external air into the combustion chamber 5. The combustion furnace 2 can provide stable support for the heat insulation tile 4 and the furnace cover 3. The heat insulation tile 4 can play a heat insulation role to prevent the combustion furnace 2 from scalding people, and the heat insulation tile 4 can provide stable support for the combustion chamber 5. After the furnace cover 3 is fixed above the combustion furnace 2, it can cover the combustion chamber 5, so that the combustion chamber 5 can provide a combustion space for the biomass fuel, and an igniter is arranged in the combustion chamber 5 to ignite the biomass fuel. The furnace cover 3 can provide stable support for the auger 11. The auger 11 can convey the biomass fuel particles into the furnace cover 3, so that the biomass fuel particles can fall into the combustion chamber 5. The auger 11 can provide stable support for the receiving hopper 12. The receiving hopper 12 can provide a channel for the biomass fuel particles to enter the auger 11. The observation window 6 can facilitate the staff to observe the flame condition in the combustion chamber 5. The slag discharge door 8 can provide a discharge channel for the combustion waste residue in the combustion furnace 2, and the check pipe 10 can prevent backfire.

[0085] In the actual application process of this embodiment: The staff needs to connect the burner 9 to the boiler, and can inject the biomass fuel particles into the inner side of the receiving hopper 12 according to the actual needs. At the same time, the staff needs to control the folding cylinder 25 to fold upward, open the opening between the receiving hopper 12 and the spiral pipe 19, so that the biomass fuel particles can pass through the opening and be discharged from the output end of the receiving hopper 12 into the auger 11. At the same time, start the auger 11 to convey the biomass fuel particles into the combustion chamber 5, then start the igniter to ignite the biomass fuel particles, and control the operation of the bellows machine 54 to convey air into the combustion chamber 5. And the staff can control the air flow rate entering the combustion chamber 5 by adjusting the operating power of the bellows machine 54, so as to control the combustion effect. When the biomass fuel particles burn and produce waste residue, the waste residue will fall into the combustion furnace 2 under the action of gravity and accumulate. And the flame in the combustion chamber 5 will enter the burner 9 under the wind force of the bellows machine 54 and be ejected into the boiler through the burner 9 under the guidance of the burner 9.

[0086] The staff can remove the fixing components that fix the slag discharge door 8 as needed to open the slag discharge door 8, and then discharge the combustion waste slag accumulated in the combustion furnace 2 through the slag discharge pipe 7.

[0087] As a preferred embodiment of the present invention, the heat utilization part includes a heat collecting part and a steam part. The heat collecting part is arranged outside the combustion chamber 5, the steam part is connected to the heat collecting part and penetrates through the furnace cover 3. The heat collecting part includes:

[0088] There is a cavity between the heat insulation tile 4 and the combustion chamber 5;

[0089] The heat exchange tube 13 is arranged in the cavity, is serpentinely arranged outside the combustion chamber 5, and is attached to the combustion chamber 5;

[0090] There are two water level sensors 15, which penetrate through the heat exchange tube 13;

[0091] One of the water level sensors 15 is close to the input end of the heat exchange tube 13, and the other water level sensor 15 is close to the output end of the heat exchange tube 13;

[0092] The electromagnetic valve 17 is fixed at the input end of the heat exchange tube 13.

[0093] Specifically, the cavity can provide a setting space for the heat exchange tube 13, and the heat insulation tile 4 can provide a supporting and positioning function for the heat exchange tube 13. The heat exchange tube 13 can provide a flow channel for water and steam, and can absorb the heat of the combustion chamber 5 and transfer it to the water flowing inside. When one of the water level sensors 15 does not sense water, it will control the electromagnetic valve 17 to open, and when the other water level sensor 15 senses water, it will control the electromagnetic valve 17 to close.

[0094] The steam part includes:

[0095] The steam pipe 14 penetrates through the furnace cover 3 and one end is communicated with the heat exchange tube 13;

[0096] The electric control three-way valve 18 is connected to the other end of the steam pipe 14;

[0097] Flange plates 16 are respectively connected to the electric control three-way valve 18 and the output end of the heat exchange tube 13.

[0098] Specifically, the steam pipe 14 can provide a flow channel for steam under the support of the heat exchange tube 13, and can provide support for the electric control three-way valve 18. The electric control three-way valve 18 can provide a penetrating channel for steam, and the electric control three-way valve 18 and the heat exchange tube 13 can provide support for the flange pipe.

[0099] In the actual application process of this embodiment, the staff uses a fixing component to connect the water delivery pipeline with the flange 16 connecting the output end of the solenoid valve 17 and the output end of the heat exchange tube 13, so that water can pass through the solenoid valve 17 and enter the heat exchange tube 13 when the solenoid valve 17 is opened, and the water can pass through the heat exchange tube 13 and be discharged to the connecting pipeline from the flange 16 at the output end for circulation. At this time, another water level sensor 15 will control the solenoid valve 17 to close and stop the water flow after sensing the water. When biomass fuel pellets are burned in the combustion chamber 5, the generated heat will be conducted from the combustion chamber 5 to the heat exchange tube 13, and then the heat exchange tube 13 will transfer the absorbed heat to the water inside it, thereby heating the water to boiling to generate steam. At the same time, the water level will decrease with boiling, and the generated steam will float upward, thus passing through the heat exchange tube 13 and entering the inside of the steam pipe 14. When the water level in the heat exchange tube 13 drops below one of the water level sensors 15, this water level sensor 15 will control the solenoid valve 17 to open, allowing water to re-enter the heat exchange tube 13 for circulation and replenishment. And the staff can, according to needs, use a fixing component to connect the steam delivery pipeline with the output end of the electric control three-way valve 18 and control the flow direction of the electric control three-way valve 18, so that the steam in the steam pipe 14 can pass through the electric control three-way valve 18 and be discharged to the pipeline connected to the output end of the electric control three-way valve 18 for the staff to export and use, thereby realizing the reuse of combustion waste heat and improving functionality and energy utilization rate.

[0100] In another preferred embodiment of the present invention, the steaming part includes a feeding component and a steam conveying component. The feeding component is arranged in the receiving hopper 12, the steam conveying component is arranged on one side of the feeding component and penetrates through the receiving hopper 12 to be connected with the steam conveying component. The feeding component includes:

[0101] The spiral tube 19 is fixedly connected to the inside of the receiving hopper 12 through a fixing component;

[0102] The feeding hopper 20 is fixed at one end of the spiral tube 19;

[0103] The inner liner 21 is arranged inside the spiral tube 19, and both ends are covered by the spiral tube 19, having the same shape as the spiral tube 19 and being integrally formed with the spiral tube 19;

[0104] The folding cylinder 25 is fixed at the other end of the spiral tube 19 and is communicated with the output end of the feeding hopper 20;

[0105] The adjusting part is movably arranged through one side of the receiving hopper 12 and is connected with the folding cylinder 25.

[0106] Specifically, the material receiving hopper 12 can provide stable support for the spiral tube 19 through the fixing components. The spiral tube 19 can provide support for the feed hopper 20, and the feed hopper 20 can provide a filling space for the biomass fuel pellets. The spiral tube 19 can provide support and protection for the inner liner 21. There is a space between the spiral tube 19 and the inner liner 21 for steam to flow through. The spiral tube 19 can provide stable support for the folding cylinder 25. The folding cylinder 25 can be folded and contracted under the action of an external force. The inner liner 21 and the folding cylinder 25 can provide a through-channel and guiding function for the biomass fuel pellets. Moreover, the inner liner 21 can cooperate with the spiral tube 19 to extend the moving path of the biomass fuel pellets and increase the time for the biomass fuel pellets to be heated by steam.

[0107] The adjusting parts include:

[0108] The limiting plate 26 is fixed on the outer side of the spiral tube 19;

[0109] The pulling plate 27 is fixed on the outer side of the folding cylinder 25 and is close to the bottom end of the folding cylinder 25;

[0110] The pulling rope 28 movably penetrates through the material receiving hopper 12 and the limiting plate 26, and one end thereof is fixedly connected to the pulling plate 27;

[0111] The elastic rope 29 has one end fixedly connected to the other end of the pulling rope 28;

[0112] The pushing stator part is connected to the other end of the elastic rope 29.

[0113] Specifically, the limiting plate 26 can provide a through-channel and a blocking and limiting function for the pulling rope 28 under the support of the spiral tube 19, so that the pulling rope 28 can change its moving direction under the action of an external force. The folding cylinder 25 can provide stable support for the pulling plate 27. The pulling rope 28 can be connected to the folding cylinder 25 through the pulling plate 27 so as to pull the folding cylinder 25 to fold and contract by using an external force. After the external force acting on the folding cylinder 25 disappears, the folding cylinder 25 will expand and elongate downward by using gravity. The pulling rope 28 can provide support for the elastic rope 29. The elastic rope 29 can be stretched and deformed and thus elongated under the action of an external force, and will rebound after the external force disappears.

[0114] The steam conveying parts include:

[0115] The water-vapor net 22 is arranged through the side of the spiral tube 19 and the inner liner 21 away from the auger 11;

[0116] One end of the L-shaped pipe 23 is fixedly connected to the other end of the steam pipe 14 through a connecting component, and the other end thereof penetrates through the material receiving hopper 12 and is communicated with the spiral tube 19;

[0117] The cotton sleeve 24 is sleeved on the outer side of the L-shaped pipe 23.

[0118] Specifically, the spiral tube 19 and the inner liner 21 can provide stable support for the water-vapor net 22. For example,Figure 5 As shown, the integrally formed connection between the spiral tube 19 and the inner tank 21 blocks the steam from entering the water-vapor network 22. The water-vapor network 22 can provide a through-discharge channel for the water vapor in the biomass fuel particles conveyed into the inner tank 21. The steam pipe 14 can provide support for the L-shaped pipe 23. The L-shaped pipe 23 can provide a channel for the steam to enter between the spiral tube 19 and the inner tank 21, enabling the steam to transfer heat to the inner tank 21 between the spiral tube 19 and the inner tank 21. After the inner tank 21 absorbs heat, it will heat and evaporate the water in the biomass fuel particles on its inner side. The cotton sleeve 24 can provide protection and heat insulation for the L-shaped pipe 23 under the support of the L-shaped pipe 23, preventing the L-shaped pipe 23 from being exposed.

[0119] The push stator part includes:

[0120] A collar 30, sleeved on the outer side of the cotton sleeve 24 and fixedly connected to the other end of the elastic cord 29;

[0121] A loop line 31, engraved on the outer side of the cotton sleeve 24 and located on one side of the collar 30;

[0122] A ring groove 33, opened on the inner side of the collar 30;

[0123] A spring 34, arranged in the ring groove 33 and fixedly connected to the collar 30 at one end;

[0124] A friction block 35, fixedly connected to the other end of the spring 34, having a curvature and fitting with the cotton sleeve 24.

[0125] Specifically, push rods 32 are symmetrically arranged on the outer side of the collar 30. The cotton sleeve 24 can provide support and movement guiding for the collar 30 under the support of the L-shaped pipe 23. The cotton sleeve 24 can provide support for the loop line 31. The loop line 31 can facilitate the staff to judge the moving distance of the collar 30. The collar can provide a space for opening the ring groove 33. The ring groove 33 can provide a storage and movement space for the friction block 35 and the spring 34. The friction block 35 is made of rubber and can tightly adhere to the cotton sleeve 24 by the elastic force of the spring 34, thereby positioning the collar 30 by using the frictional force.

[0126] In the actual application process of this embodiment, usually, the staff needs to push the collar 30 along the cotton sleeve 24 through the push rod 32 in the direction close to the loop line 31, so that the collar 30 uses external force to push the spring 34 to contract under the support of the cotton sleeve 24 through the friction block 35. Then, the friction block 35 can move in the direction close to the inside of the annular groove 33, and then the collar 30 can be pushed by external force to move along the cotton sleeve 24. It is only necessary to move the collar 30 to the side of the loop line 31 away from the folding cylinder 25. At this time, the spring 34 will use the rebounding force to push the friction block 35 to closely adhere to the cotton sleeve 24 under the support of the collar 30, so as to position the collar 30. While moving, the collar 30 will pull the pull rope 28 through the elastic cord 29 to move through the material receiving hopper 12, so that the pull rope 28 will pull the pull plate 27 upward under the resistance and limit of the limit plate 26. Then, the pull plate 27 can pull the bottom end of the folding cylinder 25 upward under the action of external force, so that the folding cylinder 25 can be pulled and folded and contracted under the support of the spiral pipe 19, so as to open an opening between the output ends of the spiral pipe 19 and the material receiving hopper 12, so that the normal biomass fuel material filled into the material receiving hopper 12 can pass through the opening and be discharged from the output end of the material receiving hopper 12 to the auger 11 for feeding;

[0127] When the humidity of the weather causes the dryness of the biomass fuel particles to be insufficient, the staff needs to control the electric control three-way valve 18 to adjust the channel, so that the steam in the steam pipe 14 can enter the inside of the L pipe 23 under the guidance of the electric control three-way valve 18. Then, the steam will pass through the L pipe 23 and be injected between the spiral pipe 19 and the inner tank 21. At the same time, the staff needs to push the collar 30 through the push rod 32, so that the collar 30 moves along the cotton sleeve 24 in the direction close to the folding cylinder 25 to the position as shown in Figure 7 so as to relax the pulled pull rope 28 through the elastic cord 29. Then, the folded folding cylinder 25 will expand and elongate downward by gravity, and at the same time, it will pull the pull rope 28 to move downward through the material receiving hopper 12 and the limit plate 26 to be as shown in Figure 8The state shown is such that the folding cylinder 25 can close the opening between the spiral tube 19 and the output end of the receiving hopper 12. Then, biomass fuel particles with insufficient dryness are injected into the feeding hopper 20. The biomass fuel particles can pass through the feeding hopper 20 by gravity, fall into the inner tank 21 under the support of the spiral tube 19, and gradually move towards the output end of the receiving hopper 12 under the action of the inclination angle and guidance of the inner tank 21. During this process, steam will use heat to heat the biomass fuel particles through the inner tank 21, so that the moisture in the biomass fuel particles with insufficient dryness caused by humid weather can be evaporated. The generated water vapor will pass through the water vapor net 22 and be discharged to the outside. Finally, the biomass fuel particles will pass through the inner tank 21 and enter the unfolded folding cylinder 25, and then enter the auger 11 through the output end of the receiving hopper 12 under the guidance of the folding cylinder 25 for feeding, thereby reducing the problem of poor combustion effect caused by insufficient dryness of the biomass fuel particles, facilitating the use of biomass fuel particles with insufficient dryness in humid weather, and improving the utilization rate of biomass fuel particles in bad weather.

[0128] As a preferred embodiment of the present invention, the blocking and dredging part includes a rotating and pulling part and an inserting and dredging part. The rotating and pulling part is rotatably arranged on the outside of the spiral tube 19 and is connected to the feeding part. The inserting and dredging part penetrates through the rotating and pulling part and is connected to the spiral tube 19. The rotating and pulling part includes:

[0129] A square-round plate 36, fixed on the outside of the spiral tube 19, with an inner square and outer round shape, and close to the folding cylinder 25;

[0130] A bearing 37, fixed on the outside of the square-round plate 36;

[0131] A rotating ring 38, connected to the outside of the bearing 37;

[0132] A plurality of through holes 39, evenly opened through the rotating ring 38;

[0133] A pulling and moving part, movably penetrating through the receiving hopper 12 and connected to the feeding part.

[0134] Specifically, the spiral tube 19 can provide a stable support for the square-round plate 36, the square-round plate 36 can provide a support for the bearing 37, the bearing 37 can provide a rotating support for the rotating ring 38, the rotating ring 38 can provide a space for opening the through holes 39, and the through holes 39 can provide a through channel for the arc cone plate 49.

[0135] The pulling and moving part includes:

[0136] Two T-shaped rods 41, respectively fixed above the rotating ring 38 and on one side of the sleeve ring 30;

[0137] A rocker 43, movably penetrating through the receiving hopper 12 and rotatably connected to the two T-shaped rods 41 at both ends;

[0138] The guide groove 51 is formed through the material receiving hopper 12.

[0139] The guide plate 52 is sleeved outside the rocker 43 and is movably and guidingly connected to the guide groove 51.

[0140] There are two elastic membranes 53, which are symmetrically arranged inside the guide groove 51, with one end fixedly connected to the material receiving hopper 12 and the other end fixedly connected to the guide plate 52.

[0141] Specifically, a fixing plate 40 is fixed on one side of the collar 30 close to the T-bar 41. The T-bar 41 is fixedly connected to the collar 30 through the fixing plate 40. Rotating sleeves 42 are respectively fixed at both ends of the rocker 43, and the rotating sleeve 42 is rotatably connected to the T-bar 41. The T-bar 41 can provide rotational support for the rotating sleeve 42 under the support of the fixing plate 40 and the rotating ring 38, and the rotating sleeve 42 can provide support for the rocker 43. The material receiving hopper 12 can provide a space for forming the guide groove 51. The guide groove 51 can provide lateral movement guidance for the guide plate 52. The guide plate 52 and the material receiving hopper 12 can provide support for the elastic membrane 53. And the guide plate 52 can drive the elastic membrane 53 to deform together during lateral movement. The elastic membrane 53 can cover the guide groove 51 to prevent the biomass fuel particles in the material receiving hopper 12 from leaking to the outside through the guide groove 51.

[0142] The inserting and dredging member includes:

[0143] The switch 44 is fixedly arranged through the limiting plate 26 and is located above the pull plate 27.

[0144] The electric rod 45 is fixedly connected to the outside of the spiral tube 19 through a connecting member.

[0145] The semi-circular rod 47 is arranged above the rotating ring 38, and one end is welded to the telescopic end of the electric rod 45 through a connecting member.

[0146] There are multiple rubber bands 48, and one end is fixedly connected to the semi-circular rod 47.

[0147] There are multiple arc cone plates 49, which are respectively fixed at the other ends of the multiple rubber bands 48. One end is sharp, and the sharp end movably penetrates through the rotating ring 38.

[0148] The pressing plate 50 is fixed outside the arc cone plate 49, close to the top of the arc cone plate 49, and contacts the semi-circular rod 47.

[0149] Specifically, a connecting plate 46 is fixedly connected to the telescopic end of the electric rod 45, and the connecting plate 46 is welded to the semi-circular rod 47. The limiting plate 26 can provide stable support for the switch 44. When the switch 44 is triggered by extrusion, it will control the electric rod 45 to extend. When the extrusion force on the switch 44 disappears, it will pop out and control the electric rod 45 to contract. The electric rod 45 can provide support for the semi-circular rod 47 through the connecting plate 46 under the support of the spiral tube 19. The semi-circular rod 47 can provide support for the rubber band 48. The rubber band 48 can be stretched and deformed under the action of an external force and will rebound when the external force disappears. It can provide support for the arc cone plate 49 under the support of the semi-circular rod 47. The semi-circular rod 47 can move downward and squeeze the pressing plate 50 when the electric rod 45 extends, so that the pressing plate 50 can use the pressure, the guidance of the through hole 39 and the action of the arc of the arc cone plate 49 itself to push the arc cone plate 49 downward through the through hole 39 and rotate inward.

[0150] During the actual application of this embodiment, under normal circumstances, when the collar 30 moves to a position on the side of the loop line 31 away from the folding cylinder 25 to fold and contract the folding cylinder 25 and directly uses the feeding hopper 12 to add biomass fuel particles into the auger 11 for feeding, the staff can observe through the transparent feeding hopper 12 whether the biomass fuel particles are blocked at the opening between the output end of the feeding hopper 12 and the spiral tube 19.

[0151] When the folding cylinder 25 is pulled and folded and contracted through the collar 30 and the pull rope 28, the pull plate 27 will gradually approach the limit plate 26 as the folding cylinder 25 folds, and trigger the switch 44 by external force extrusion after the folding cylinder 25 is folded. The switch 44 controls the electric rod 45 to extend. The electric rod 45 will use the telescopic end to push the connecting plate 46 downward, so that the connecting plate 46 drives the semi-circular rod 47 to move downward together by external force. The semi-circular rod 47 will contact the pressing plate 50 during the movement and squeeze the pressing plate 50 by external force. As a result, the pressing plate 50 uses external force and the inclination angle to push the arc cone plate 49 downward, so that the arc cone plate 49 penetrates the through hole 39 and moves downward under the action of external force and the guiding action of the through hole 39, and rotates inward (rotates in the direction close to the center line of the bearing 37) during the movement. At the same time, the arc cone plate 49 will drive the rubber band 48 to stretch and deform during the movement. When the staff needs to block the biomass fuel particles at the opening between the output end of the receiving hopper 12 and the spiral tube 19 according to the actual situation, the collar 30 is pushed by the push rod 32 to continue to move away from the folding cylinder 25 along the cotton sleeve 24 from the side of the loop line 31 away from the folding cylinder 25. At this time, the pull rope 28 will be restricted from moving by the folded folding cylinder 25, so that the collar 30 stretches and deforms the elastic cord 29 under the support of the pull rope 28 by external force during the movement, so that the collar 30 can move. The collar 30 will drive the connected T-bar 41 to move together through the fixed plate 40 during the movement, so that the T-bar 41 pulls one end of the rocker 43 through the swivel 42. At the same time, the rocker 43 will pull the swivel ring 38 through the swivel 42 and the T-bar 41 connected to the other end. At the same time, both ends of the rocker 43 will rotate around the T-bar 41 through the swivel 42 respectively. As a result, the swivel ring 38 rotates counterclockwise around the bearing 37 under the action of external force. At the same time, the whole rocker 43 will generate a lateral swing and move together with the collar 30. The guide plate 52 can provide a through channel and a moving space for the rocker 43, and the rocker 43 will push the guide plate 52 to move horizontally along the guide groove 51 by external force during the swing. At the same time, the guide plate 52 will drive the elastic film 53 to move and deform together during the movement, so that the swivel ring 38 can drive the arc cone plate 49 penetrating the through hole 39 to rotate together during the rotation. At the same time, the arc cone plate 49 will pull the rubber band 48 to stretch and deform under the support of the semi-circular rod 47 during the rotation, so that the arc cone plate 49 can disturb the blocked biomass fuel material during the rotation and prevent the biomass fuel material from blocking at the opening between the output end of the receiving hopper 12 and the spiral tube 19.

[0152] When the push ring is pushed and reset to the position as shown in Figure 7 After that, the pull plate 27 will be separated from the switch 44, resulting in the switch 44 bouncing up, and then controlling the electric rod 45 to contract and reset. The stretched rubber band 48 will rebound and reset by the elastic force, and the electric rod 45 will drive the rubber band 48 to move upward together through the semi-circular rod 47. The rubber band 48 will drive the arc cone plate 49 to penetrate the through hole 39 and move upward to reset.

[0153] Working principle: Biomass fuel pellets enter the auger 11 conveying mechanism through the transparent hopper 12, and are quantitatively conveyed to the combustion chamber 5 by the auger 11. The igniter in the combustion chamber 5 starts combustion, and the air box 54 adjusts the air intake according to the combustion demand to optimize the combustion efficiency. The combustion residue falls into the bottom of the combustion furnace 2 through the slag leakage port, and is regularly cleaned through the slag discharge pipe 7 and the slag discharge door 8 to avoid the influence of slag accumulation on the combustion stability.

[0154] The outside of the combustion chamber 5 is covered with a serpentine heat exchange tube 13, which absorbs the waste heat of combustion to heat the circulating water in the tube to generate high-temperature steam. The water level sensor 15 monitors the water level in the tube in real time, and automatically adjusts the water supply through the solenoid valve 17 to ensure continuous and efficient heat exchange. The generated steam can select the output path through the electric control three-way valve 18, and can be directly supplied for external use or introduced into the steaming part to dry the fuel. By recovering the waste heat of combustion through the heat exchange tube 13 to generate steam, the cascade utilization of heat energy is realized, the energy utilization rate is improved, the steam can be supplied externally and used to dry the fuel, reducing the influence of fuel moisture on the combustion efficiency, and the comprehensive thermal efficiency is improved.

[0155] When the fuel humidity is high, the steam is introduced into the interlayer between the spiral tube 19 and the inner liner 21 through the L tube 23 to evaporate the fuel moisture using the steam heat. The water vapor is discharged through the water vapor net 22. The dried fuel enters the auger 11 through the folding cylinder 25. The opening and closing of the folding cylinder 25 are adjusted by the pusher stator parts. Combining the linkage of the rotary pulling part and the inserting and dredging part, and using the rotation disturbance of the arc cone plate 49, the elastic expansion and contraction of the rubber band 48 and the drive of the electric rod 45, the blockage between the hopper 12 and the spiral tube 19 is dredged in real time to ensure the continuity of feeding. The design of the steaming part supports the on-line drying of wet fuel, solves the problem of insufficient combustion caused by high fuel humidity in rainy weather, and significantly enhances the fuel applicability. The dredging part realizes automatic blockage dredging through mechanical linkage and intelligent control (such as the water level sensor 15 and the electric rod 45), reduces the frequency of manual intervention, and ensures continuous production.

[0156] The above is the preferred implementation mode of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. An efficient and energy-saving biomass boiler combustion device, comprising a combustion furnace and a blower connected to one side of the combustion furnace. A furnace cover is provided on the combustion furnace. A heat insulation tile is fixed inside the combustion furnace. A combustion chamber is arranged inside the heat insulation tile. A screw conveyor is connected to the furnace cover. The input end of the screw conveyor is connected to a feeding hopper. The other side of the combustion furnace is connected to a burner, and the burner is communicated with the combustion chamber. It is characterized in that, It also includes: A heat recovery part, which includes a heat collecting part and a steam part. The heat collecting part is arranged outside the combustion chamber. The steam part is connected to the heat collecting part and penetrates through the furnace cover. The heat collecting part includes a heat exchange tube that is serpentinely arranged outside the combustion chamber, a water level sensor for monitoring the water level of the heat exchange tube, and a solenoid valve for controlling the water flow input. The steam part includes a steam pipe that is communicated with the heat exchange tube to recover the combustion waste heat to generate steam; A material steaming part, which includes a feeding part and a steam conveying part. The feeding part is arranged in the receiving hopper. The steam conveying part is arranged on one side of the feeding part and penetrates through the receiving hopper to be connected to the steam part. The feeding part includes a spiral tube, an inner liner, and a folding cylinder in the receiving hopper. The steam conveying part includes an L-shaped tube that is communicated with the steam pipe to dry the biomass fuel particles by using steam; The steam conveying part includes: an L-shaped tube and a cotton sleeve sleeved on the outer side of the L-shaped tube; A clogging removal part, which includes a rotatable rotating ring, an arc-shaped cone plate penetrating through the rotating ring, and an electric rod for driving the arc-shaped cone plate to move to dredge the fuel blockage; The feeding part includes: A spiral tube, which is fixedly connected to the inner side of the receiving hopper through a fixing part; A feeding hopper, which is fixed at one end of the spiral tube; A folding cylinder, one end of which is fixed at the other end of the spiral tube; An adjusting part, which movably penetrates through one side of the receiving hopper; The adjusting part includes: A limiting plate, which is fixed on the outer side of the spiral tube; A pulling plate, which is fixed on the outer side of the folding cylinder and close to the bottom end of the folding cylinder; A pulling rope, which movably penetrates through the receiving hopper and the limiting plate, and one end of which is fixedly connected to the pulling plate; An elastic rope, one end of which is fixedly connected to the other end of the pulling rope; A pushing and positioning part, which is connected to the other end of the elastic rope; The pushing and positioning part includes: A collar, which is sleeved on the outer side of the cotton sleeve and fixedly connected to the other end of the elastic rope; A loop line, which is engraved on the outer side of the cotton sleeve and located on one side of the collar; A ring groove, which is opened on the inner side of the collar; A spring, which is arranged in the ring groove and one end of which is fixedly connected to the collar; A friction block, which is fixedly connected to the other end of the spring, has a radian, and fits with the cotton sleeve.

2. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 1, characterized in that, The heat collecting part includes: There is a cavity between the heat insulation tile and the combustion chamber; A heat exchange tube, which is arranged in the cavity, is serpentinely arranged outside the combustion chamber, and fits with the combustion chamber; Two water level sensors, which penetrate through the heat exchange tube; One of the water level sensors is close to the input end of the heat exchange tube, and the other water level sensor is close to the output end of the heat exchange tube; A solenoid valve, which is fixed at the input end of the heat exchange tube.

3. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 2, characterized in that The steam part includes: A steam pipe, which penetrates through the furnace cover and one end of which is communicated with the heat exchange tube; An electric control three-way valve, which is connected to the other end of the steam pipe; Flange plates are respectively connected to the electric control three-way valve and the output end of the heat exchange tube.

4. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 1, characterized in that, The feeding part also includes: An inner liner, which is arranged inside the spiral tube, both ends are covered by the spiral tube, has the same shape as the spiral tube, and is integrally formed with the spiral tube; The folding cylinder is communicated with the output end of the feeding hopper; The adjusting part is connected to the folding cylinder.

5. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 4, characterized in that, The steam conveying part also includes: A water and steam net, which penetrates through the side of the spiral tube and the inner liner away from the auger; An L-shaped tube, one end of which is fixedly connected to the other end of the steam pipe through a connecting part, and the other end penetrates through the receiving hopper to be communicated with the spiral tube; There is a space between the inner liner and the spiral tube for steam to flow through.

6. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 5, characterized in that, The blocking and dredging part includes a rotating and pulling part and an inserting and dredging part. The rotating and pulling part is rotatably arranged on the outer side of the spiral pipe and is connected to the material injection part. The inserting and dredging part penetrates through the rotating and pulling part and is connected to the spiral pipe. The rotating and pulling part includes: A square-round plate, fixed on the outer side of the spiral pipe, with an inner square and outer round shape and close to the folding cylinder; A bearing, fixed on the outer side of the square-round plate; A rotating ring, connected to the outer side of the bearing; Through holes, having a plurality of them, evenly opened through the rotating ring; A pulling and moving part, movably penetrating through the receiving hopper and connected to the material injection part.

7. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 6, characterized in that, The pulling and moving part includes: T-shaped rods, having two of them, respectively fixed above the rotating ring and on one side of the sleeve ring; A rocker, movably penetrating through the receiving hopper and rotatably connected to the two T-shaped rods at both ends; A guide groove, opened through the receiving hopper; A guide plate, sleeved on the outer side of the rocker and movably guidingly connected to the guide groove; Elastic membranes, having two of them, symmetrically arranged inside the guide groove, with one end fixedly connected to the receiving hopper and the other end fixedly connected to the guide plate.

8. The high-efficiency and energy-saving biomass boiler combustion equipment according to claim 7, characterized in that The inserting and dredging part includes: A switch, fixedly arranged through the limiting plate and located above the pulling plate; An electric rod, fixedly connected to the outer side of the spiral pipe through a connecting component; A semi-circular rod, arranged above the rotating ring, and one end is welded to the telescopic end of the electric rod through a connecting component; Rubber bands, having a plurality of them, with one end fixedly connected to the semi-circular rod; Arc cone plates, having a plurality of them, respectively fixed to the other ends of the plurality of rubber bands, with one end being sharp, and the sharp end movably penetrating through the rotating ring; A pressing plate, fixed on the outer side of the arc cone plate, close to the top end of the arc cone plate, and in contact with the semi-circular rod.

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