A new stove for multi-fuel

Abstract

The utility model provides a kind of novel stove suitable for multiple fuels, including stove assembly and adjusting grate mechanism, the stove assembly includes furnace body, hopper chamber, main combustion chamber and exhaust chamber;Wherein, the hopper chamber is located at the inner side wall bottom of the furnace body, the main combustion chamber is located at the inner side wall middle part of the furnace body, the exhaust chamber is located at the inner side wall top of the furnace body;The utility model is by rotating movable grate frame to drive single grid part and double grid part synchronous movement, to control the single grid part or double grid part in fixed grate frame to movement to the gap between grate, so that stove can be according to fuel demand, the gap size of grate structure is adjusted, so that stove can be suitable for multiple specifications different fuels, and can effectively guarantee that different fuels can be fully combusted in main combustion chamber, and grate frame can be rotated in movable mode, the operation of slagging in main combustion chamber is quickly completed, so that operation is more convenient.

Description

Technical Field

[0001] This utility model relates to a novel stove, specifically a novel stove suitable for multiple fuels, and belongs to the field of stove technology. Background Technology

[0002] A stove is a device used for heating, cooking, or industrial purposes, primarily generating heat by burning fuels such as firewood, coal, natural gas, or electricity. Stoves not only provide warmth but can also be used for cooking food, heating liquids, and even for high-temperature processing in industry. Household stoves, however, are primarily designed for heating and / or cooking.

[0003] Traditional household stoves typically have a fixed furnace structure, with the grate structure directly fixed inside the furnace. The gaps between these structures are fixed, preventing the stove from adapting to different fuel sizes and ensuring complete combustion of various fuels within the furnace. For example, when the grate gaps are large, smaller fuel or biomass particles can easily pass through and fall directly, failing to burn effectively. Even when the grate gaps are designed to accommodate the size of fuel particles, the smaller gaps limit air penetration into the bottom combustion layer when using larger biofuels or coal, especially in areas with tightly packed fuels. This can lead to poor ventilation and uneven combustion. Furthermore, the small gaps in the grate structure make it prone to ash blockage, reducing or completely blocking airflow and worsening combustion. Additionally, cleaning the fixed grate structure is relatively inconvenient. Therefore, a new type of stove suitable for multiple fuels is proposed. Utility Model Content

[0004] In view of this, the present invention provides a novel stove applicable to multiple fuels to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: a novel stove applicable to multiple fuels includes a stove assembly and an adjustable grate mechanism, wherein the stove assembly includes a stove body, an ash hopper chamber, a main combustion chamber and a flue gas chamber;

[0006] The ash hopper is located at the bottom of the inner wall of the furnace body, the main combustion chamber is located in the middle of the inner wall of the furnace body, the flue gas chamber is located at the top of the inner wall of the furnace body, the adjustable grate mechanism is installed between the main combustion chamber and the ash hopper, and a push-pull temperature baffle mechanism is installed on the outer wall of the furnace body.

[0007] The push-pull temperature-blocking mechanism is used to insulate the outer wall of the furnace body and to control the contact area between the outer wall of the furnace body and the air by pushing and pulling.

[0008] The adjustable grate mechanism utilizes rotation to adjust the grate gap to accommodate different fuel sizes. The adjustable grate mechanism includes a fixed grate frame, two connecting plates, a movable grate frame, several single-grate sections, several double-grate sections, and a connecting shaft.

[0009] The fixed grate frame is fixedly connected to the bottom of the inner wall of the main combustion chamber. Two connecting plates are symmetrically fixedly connected to the bottom of the fixed grate frame. The movable grate frame is rotatably connected between the two connecting plates. Several single-grate sections are provided at the bottom of the movable grate frame, and several double-grate sections are provided at the top of the movable grate frame. The single-grate sections and double-grate sections are adapted to the inner wall of the fixed grate frame.

[0010] More preferably, the push-pull temperature blocking mechanism includes two push-pull guide rails, an arc-shaped temperature blocking back plate, two arc-shaped temperature blocking side plates, and two push-pull handles;

[0011] The two push-pull guide rails are symmetrically fixed to the outer side wall of the furnace body, the arc-shaped heat-shielding back plate is fixedly connected to one side of the furnace body, the two arc-shaped heat-shielding side plates are slidably connected to the inner side wall of the two push-pull guide rails, the two arc-shaped heat-shielding side plates are located on both sides of the arc-shaped heat-shielding back plate, and the two push-pull handles are respectively installed on one side of the two arc-shaped heat-shielding side plates.

[0012] More preferably, a flame-blocking mechanism is installed at the bottom of the inner wall of the smoke exhaust chamber. The flame-blocking mechanism includes a flame-blocking disc, a sliding groove, a connecting arm, a first bevel gear, and a second bevel gear.

[0013] The slide groove is formed at the bottom of the inner wall of the smoke exhaust chamber. The outer wall of the flame deflector is slidably connected to the inner wall of the slide groove. One end of the connecting arm is fixedly connected to the top of the flame deflector. The first bevel gear is rotatably connected to the bottom of the inner wall of the smoke exhaust chamber. The other end of the connecting arm is fixedly connected to one end of the first bevel gear. The second bevel gear is rotatably connected to one side of the inner wall of the smoke exhaust chamber. The outer wall of the first bevel gear and the outer wall of the second bevel gear are meshed together.

[0014] More preferably, a return air inlet is provided on one side of the inner wall of the ash hopper, and a wind control baffle is slidably connected to the inner wall of the return air inlet. An adjusting shaft is fixedly connected to one side of the wind control baffle, and one end of the adjusting shaft is rotatably connected to one side of the inner wall of the ash hopper.

[0015] More preferably, three compression-type sealing transmission mechanisms are installed between the adjustable grate mechanism, the flame-blocking mechanism, and the adjusting shaft and the furnace body. Each of the three compression-type sealing transmission mechanisms includes a hollow stud, a transmission shaft, a snap ring groove, a locking nut, a clamping nut, a compression sleeve, and a packing.

[0016] In this configuration, one end of the hollow stud penetrates the inner wall of the furnace body, the outer wall of the drive shaft is rotatably connected to the inner wall of the hollow stud, the snap ring groove is formed on one side of the outer wall of the drive shaft, the inner walls of the locking nut and the clamping nut are threaded to the outer wall of the hollow stud, one side of the locking nut abuts against the inner wall of the furnace body, the extrusion sleeve and the packing are both sleeved on one side of the outer wall of the drive shaft, the inner wall of the extrusion sleeve is threaded to the outer wall of the hollow stud, and the packing is located between the inner wall of the extrusion sleeve and one end of the drive shaft.

[0017] More preferably, one end of the connecting shaft passes through the inner wall of the connecting plate and is fixedly connected to one side of the movable grate frame; one end of the drive shaft of each of the three extrusion sealing transmission mechanisms is fixedly connected to one end of the connecting shaft, the second bevel gear, and the adjusting shaft, respectively; and the other end of the drive shaft of each of the three extrusion sealing transmission mechanisms is fixedly connected to an adjusting rocker.

[0018] More preferably, an ash hopper sealing door is installed on one side of the bottom of the furnace body, a feeding observation door is installed on one side of the middle of the furnace body, an induced draft fan is installed on the other side of the bottom of the furnace body, and a flue pipe is connected to one side of the upper surface of the furnace body.

[0019] More preferably, a secondary combustion chamber is provided between the exhaust chamber and the main combustion chamber. A protruding fuel chamber is provided on one side of the inner wall of the main combustion chamber. Air holes are provided on the inner walls of both the secondary combustion chamber and the protruding fuel chamber. A baffle grid is detachably installed on one side of the inner wall of the main combustion chamber. An air curtain guide plate is fixedly connected to the other side of the inner wall of the main combustion chamber. An ash hopper box is slidably connected to the bottom of the inner wall of the ash hopper chamber.

[0020] The present invention has the following advantages due to the adoption of the above technical solution:

[0021] I. This utility model uses a rotating movable grate frame to drive the single-grate section and the double-grate section to move synchronously. This allows the single-grate section or the double-grate section, which moves into the fixed grate frame, to control the grate gap. As a result, the furnace can adjust the gap size of the grate structure according to fuel requirements, making the furnace suitable for various fuel specifications. It can effectively ensure that different fuels can be fully burned in the main combustion chamber. Moreover, the rotating movable grate frame can be used to quickly complete the slag removal operation in the main combustion chamber, making the operation more convenient.

[0022] II. This utility model uses a push-pull temperature-blocking mechanism to adjust the contact area between the outer wall of the furnace and the air, so as to control the way the furnace heat dissipates according to actual needs. For example, when the furnace is needed for heating in winter, the contact area between the outer wall of the furnace and the air can be increased by moving the push-pull temperature-blocking mechanism, so that the heat dissipated by the furnace can be used to heat the room; or in summer, the contact area between the outer wall of the furnace and the air can be reduced by moving the push-pull temperature-blocking mechanism, so that the heat inside the furnace is concentrated upward, so as to concentrate the heat for cooking, and reduce the impact of the furnace heat dissipation on the indoor temperature.

[0023] The above overview is for illustrative purposes only and is not intended to limit the scope of the invention in any way. Further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural diagram of the present invention;

[0026] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 3 This is an axonometric view of the fixed and movable grate frames of this utility model;

[0028] Figure 4 This is a cross-sectional view of the movable grate frame of this utility model;

[0029] Figure 5 This is a cross-sectional structural diagram of the smoke exhaust chamber of this utility model;

[0030] Figure 6 This is a partial cross-sectional view of the furnace body of this utility model.

[0031] Reference numerals: 1. Furnace assembly; 2. Adjustable grate mechanism; 3. Push-pull temperature baffle mechanism; 4. Extrusion sealing transmission mechanism; 5. Flame baffle mechanism; 101. Furnace body; 102. Ash hopper chamber; 103. Main combustion chamber; 104. Smoke exhaust chamber; 201. Fixed grate frame; 202. Connecting plate; 203. Movable grate frame; 204. Single grate section; 205. Double grate section; 206. Connecting shaft; 301. Push-pull guide rail; 302. Arc-shaped temperature baffle back plate; 303. Arc-shaped temperature baffle side plate; 304. Push-pull handle; 401. Hollow stud; 402. Drive shaft; 4 03. Snap ring groove; 404. Fixed lock nut; 405. Compression nut; 406. Extrusion sleeve; 407. Packing; 501. Flame baffle; 502. Slide groove; 503. Connecting arm; 504. First bevel gear; 505. Second bevel gear; 61. Ash hopper sealing door; 62. Feeding observation door; 63. Secondary combustion chamber; 64. Air vent; 65. Protruding fuel chamber; 66. Material baffle; 67. Air curtain guide plate; 68. Ash hopper box; 69. Air control baffle; 70. Return air inlet; 71. Exhaust fan; 72. Smoke exhaust pipe; 73. Adjusting shaft; 74. Adjusting rocker arm. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0033] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0035] like Figures 1-6 As shown, this utility model embodiment provides a novel stove applicable to multiple fuels, including a stove assembly 1 and an adjustable grate mechanism 2. The stove assembly 1 includes a stove body 101, an ash hopper chamber 102, a main combustion chamber 103, and a flue gas chamber 104.

[0036] The ash hopper chamber 102 is located at the bottom of the inner wall of the furnace body 101, the main combustion chamber 103 is located in the middle of the inner wall of the furnace body 101, the flue gas chamber 104 is located at the top of the inner wall of the furnace body 101, the adjustable grate mechanism 2 is installed between the main combustion chamber 103 and the ash hopper chamber 102, and the outer wall of the furnace body 101 is equipped with a push-pull temperature baffle mechanism 3.

[0037] Among them, the push-pull temperature-blocking mechanism 3 is used to insulate the outer wall of the furnace body 101 and to control the contact area between the outer wall of the furnace body 101 and the air by pushing and pulling.

[0038] The adjustable grate mechanism 2 uses rotation to adjust the grate gap to accommodate different sizes of fuel. The adjustable grate mechanism 2 includes a fixed grate frame 201, two connecting plates 202, a movable grate frame 203, several single grate sections 204, several double grate sections 205, and a connecting shaft 206.

[0039] The fixed grate frame 201 is fixedly connected to the bottom of the inner wall of the main combustion chamber 103. Two connecting plates 202 are symmetrically fixedly connected to the bottom of the fixed grate frame 201. The movable grate frame 203 is rotatably connected between the two connecting plates 202. Several single grate sections 204 are provided at the bottom of the movable grate frame 203, and several double grate sections 205 are provided at the top of the movable grate frame 203. The single grate sections 204 and double grate sections 205 are adapted to the inner wall of the fixed grate frame 201.

[0040] In one embodiment, the push-pull temperature blocking mechanism 3 includes two push-pull guide rails 301, an arc-shaped temperature blocking back plate 302, two arc-shaped temperature blocking side plates 303, and two push-pull handles 304.

[0041] Among them, two push-pull guide rails 301 are symmetrically fixed to the outer side wall of the furnace body 101, the arc-shaped heat-insulating back plate 302 is fixedly connected to one side of the furnace body 101, the two arc-shaped heat-insulating side plates 303 are slidably connected to the inner side wall of the two push-pull guide rails 301, the two arc-shaped heat-insulating side plates 303 are located on both sides of the arc-shaped heat-insulating back plate 302, and the two push-pull handles 304 are respectively installed on one side of the two arc-shaped heat-insulating side plates 303.

[0042] By moving the push-pull handles 304 located on both sides of the furnace body 101, the arc-shaped heat-insulating side plates 303 are moved toward the arc-shaped heat-insulating back plate 302, so that the two arc-shaped heat-insulating side plates 303 can be stored on both sides of the arc-shaped heat-insulating back plate 302, thereby increasing the contact area between the outer wall of the main combustion chamber 103 and the air.

[0043] In one embodiment, a flame-blocking mechanism 5 is installed at the bottom of the inner wall of the smoke exhaust chamber 104. The flame-blocking mechanism 5 includes a flame-blocking disc 501, a sliding groove 502, a connecting arm 503, a first bevel gear 504, and a second bevel gear 505.

[0044] The slide groove 502 is located at the bottom of the inner wall of the smoke exhaust chamber 104. The outer wall of the flame deflector 501 is slidably connected to the inner wall of the slide groove 502. One end of the connecting arm 503 is fixedly connected to the top of the flame deflector 501. The first bevel gear 504 is rotatably connected to the bottom of the inner wall of the smoke exhaust chamber 104. The other end of the connecting arm 503 is fixedly connected to one end of the first bevel gear 504. The second bevel gear 505 is rotatably connected to one side of the inner wall of the smoke exhaust chamber 104. The outer wall of the first bevel gear 504 and the outer wall of the second bevel gear 505 are meshed together.

[0045] A return air inlet 70 is provided on one side of the inner wall of the ash hopper 102. A control baffle 69 is slidably connected to the inner wall of the return air inlet 70. An adjusting shaft 73 is fixedly connected to one side of the control baffle 69. One end of the adjusting shaft 73 is rotatably connected to one side of the inner wall of the ash hopper 102.

[0046] By rotating the second bevel gear 505, the tooth pattern drives the first bevel gear 504 to rotate. The rotating first bevel gear 504 drives the flame deflector 501 to slide along the slide groove 502 via the connecting arm 503. When the flame deflector 501 slides to the top of the secondary combustion chamber 63, it can block the flame generated by combustion.

[0047] In one embodiment, three compression sealing transmission mechanisms 4 are installed between the adjustable grate mechanism 2, the flame baffle mechanism 5, and the adjusting shaft 73 and the furnace body 101. Each of the three compression sealing transmission mechanisms 4 includes a hollow stud 401, a transmission shaft 402, a snap ring groove 403, a fixed lock nut 404, a clamping nut 405, a compression sleeve 406, and a packing 407.

[0048] One end of the hollow stud 401 penetrates the inner wall of the furnace body 101. The outer wall of the drive shaft 402 is rotatably connected to the inner wall of the hollow stud 401. The snap ring groove 403 is opened on one side of the outer wall of the drive shaft 402. The inner walls of the fixing lock nut 404 and the clamping nut 405 are threaded to the outer wall of the hollow stud 401. One side of the fixing lock nut 404 abuts against the inner wall of the furnace body 101. The extrusion sleeve 406 and the packing 407 are both sleeved on one side of the outer wall of the drive shaft 402. The inner wall of the extrusion sleeve 406 is threaded to the outer wall of the hollow stud 401. The packing 407 is located between the inner wall of the extrusion sleeve 406 and one end of the drive shaft 402.

[0049] One end of the connecting shaft 206 passes through the inner wall of the connecting plate 202 and is fixedly connected to one side of the movable grate frame 203. One end of the drive shaft 402 of the three extrusion sealing transmission mechanisms 4 is fixedly connected to one end of the connecting shaft 206, the second bevel gear 505 and the adjusting shaft 73 respectively. The other end of the drive shaft 402 of the three extrusion sealing transmission mechanisms 4 is fixedly connected to an adjusting rocker arm 74.

[0050] The fixed locking nut 404 uses a threaded connection with the hollow stud 401 to press against the furnace body 101, thereby fixing the hollow stud 401 onto the furnace body 101. The clamping nut 405 uses a threaded connection with the hollow stud 401 to press against one side of the fixed locking nut 404, thereby limiting the fixed locking nut 404 and preventing it from loosening during use. The compression sleeve 406 uses a threaded connection with the hollow stud 401 to press against the packing 407, thereby improving the sealing performance of the connection between the hollow stud 401 and the drive shaft 402.

[0051] In one embodiment, an ash hopper sealing door 61 is installed on one side of the bottom of the furnace body 101, a feeding observation door 62 is installed on one side of the middle of the furnace body 101, an induced draft fan 71 is installed on the other side of the bottom of the furnace body 101, and a flue pipe 72 is connected to one side of the upper surface of the furnace body 101.

[0052] The induced draft fan 71 is used to blow air into the furnace body 101, and the exhaust pipe 72 is used to discharge the flue gas in the exhaust chamber 104 to the outside.

[0053] In one embodiment, a secondary combustion chamber 63 is provided between the exhaust chamber 104 and the main combustion chamber 103. A protruding fuel chamber 65 is provided on one side of the inner wall of the main combustion chamber 103. Both the inner walls of the secondary combustion chamber 63 and the protruding fuel chamber 65 are provided with air holes 64. A baffle 66 is detachably installed on one side of the inner wall of the main combustion chamber 103. An air curtain guide plate 67 is fixedly connected to the other side of the inner wall of the main combustion chamber 103. An ash hopper box 68 is slidably connected to the bottom of the inner wall of the ash hopper chamber 102.

[0054] Air is injected directly into the secondary combustion chamber 63 and the protruding fuel chamber 65 through the air vent 64 to supplement the air in the main combustion chamber 103, the secondary combustion chamber 63 and the protruding fuel chamber 65, so as to promote the secondary combustion of the products generated by fuel pyrolysis.

[0055] In one embodiment, a pot seat cover is also provided on one side of the upper surface of the stove body 101 to limit the position of the cookware.

[0056] When this utility model is in operation: First, the entire stove is installed and fixed according to actual needs, and one end of the exhaust pipe 72 is extended to the outside. When using the stove, the exhaust pipe 72 is used to discharge the smoke to the outside.

[0057] When larger pieces of biofuel or coal are required, rotating the adjusting lever 74 drives the drive shaft 402 to rotate. The rotating drive shaft 402, via the connecting shaft 206, drives the movable grate 203 to rotate as a whole. The rotating movable grate 203 causes the single-grid section 204 and the double-grid section 205 to be replaced, so that the single-grid section 204 is adjusted into the fixed grate 201, thereby increasing the gap between the fixed grate 201 and the movable grate 203 to accommodate the combustion needs of larger fuel pieces. When smaller fuel or biomass fuel pellets are required, rotating the adjusting lever 74, via the drive shaft 402 and the connecting shaft 206, drives the movable grate 203 to move as a whole, so that the double-grid section 205 is adjusted into the fixed grate 201, thereby reducing the gap between the fixed grate 201 and the movable grate 203 to accommodate the combustion needs of smaller fuel volumes. The ash and slag accumulated on the fixed grate 201 can also be dropped by rotating the movable grate 203, so as to quickly complete the slag removal operation.

[0058] When it is necessary to blow air into the ash hopper 102 to promote the combustion of fuel in the main combustion chamber 103, the adjustment shaft 73 is rotated by rotating another adjustment lever 74, which drives the adjustment shaft 73 to rotate via the transmission shaft 402. The rotating adjustment shaft 73 drives the air control baffle 69 to open the return air port 70, so that the induced draft fan 71, in conjunction with the return air port 70, can inject air into the ash hopper 102 and guide the air into the main combustion chamber 103 through the ash hopper 102 to promote the complete combustion of fuel in the main combustion chamber 103. The air curtain guide plate 67 is set to guide the fuel added to the main combustion chamber 103 to the fixed grate frame 201. The space between the air curtain guide plate 67 and the furnace body 101 can be used to guide the air entering the main combustion chamber 103 from the ash hopper 102, so that the guided air forms an air curtain at the feeding observation door 62, preventing the glass on the feeding observation door 62 from being blackened during the fuel combustion process, thus affecting the observation effect.

[0059] When it is necessary to improve the combustion effect of fuel, the control damper 69 can be partially or completely blocked by rotating the adjustment lever 74, which uses the transmission shaft 402 and the adjustment shaft 73 to partially or completely block the return air vent 70, so as to divert the air blown in by the induced draft fan 71. The specific degree of blocking can be adjusted according to actual needs. After the control damper 69 is adjusted, the diverted air is directly injected into the secondary combustion chamber 63 and the protruding fuel chamber 65 through the air hole 64 to supplement the air in the main combustion chamber 103, the secondary combustion chamber 63 and the protruding fuel chamber 65, so as to promote the secondary combustion of the fuel pyrolysis products, making the fuel combustion more complete and efficient, and reducing the emission of unburned combustible gases and flue gas. Compared with the traditional combustion method, with the same amount of fuel, the fuel can burn for a longer time and provide more lasting heat.

[0060] When heating is needed using a stove, the push-pull handles 304 located on both sides of the stove body 101 are moved to move the arc-shaped heat-blocking side plates 303 toward the arc-shaped heat-blocking back plate 302. This allows the two arc-shaped heat-blocking side plates 303 to be retracted to both sides of the arc-shaped heat-blocking back plate 302, increasing the contact area between the outer wall of the main combustion chamber 103 and the air. This, in turn, increases the heat dissipated from the stove to heat the room. The specific effect of the push-pull heat-blocking mechanism 3 after retraction is as follows: Figure 1 As shown; when it is necessary to shield the flame generated by combustion in the main combustion chamber 103, the transmission shaft 402 can be rotated by rotating another adjusting rocker arm 74. The rotating transmission shaft 402 drives the second bevel gear 505 to rotate. The rotating second bevel gear 505 drives the first bevel gear 504 to rotate. The rotating first bevel gear 504 drives the flame deflector 501 to slide along the slide groove 502 through the connecting arm 503. When the flame deflector 501 slides to the top of the secondary combustion chamber 63, it shields the flame generated by combustion, so that the heat of the stove is more concentrated in the main combustion chamber 103, thereby improving the indoor heating effect.

[0061] The fixed locking nut 404, through its threaded engagement with the hollow stud 401, presses against the furnace body 101 to fix the hollow stud 401 onto the furnace body 101. The clamping nut 405, through its threaded engagement with the hollow stud 401, presses against one side of the fixed locking nut 404 to limit its position and prevent loosening during use. The compression sleeve 406, through its threaded engagement with the hollow stud 401, presses against the packing 407 to improve the sealing of the connection between the hollow stud 401 and the drive shaft 402, and to increase the resistance of the drive shaft 402 during rotation, preventing the drive shaft 402 from rotating on its own during furnace use. The snap ring groove 403 is used to limit the snap ring, so that the snap ring groove 403, in conjunction with the snap ring, limits one side of the drive shaft 402.

[0062] The ash hopper 68 is used to collect ash and slag falling through the adjustable grate mechanism 2. During cooking, the baffle 66 is used to block larger pieces of biofuel or coal in the main combustion chamber 103, so as to raise the fuel height and shorten the distance between the fuel combustion flame and the flue gas chamber 104 under the same addition conditions, thereby improving heat conduction efficiency and reducing fuel consumption. During heating, when using smaller fuel or biomass fuel pellets, the baffle 66 is removed so that the fuel pellets can enter the protruding fuel chamber 65, thereby increasing the amount of fuel pellets added to the furnace and reducing the fuel addition frequency.

[0063] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel multi-fuel stove, comprising a stove assembly (1) and an adjustable grate mechanism (2), characterized in that, The furnace assembly (1) includes a furnace body (101), an ash hopper chamber (102), a main combustion chamber (103), and a flue gas chamber (104); The ash hopper (102) is located at the bottom of the inner wall of the furnace body (101), the main combustion chamber (103) is located in the middle of the inner wall of the furnace body (101), the flue gas chamber (104) is located at the top of the inner wall of the furnace body (101), the adjustable grate mechanism (2) is installed between the main combustion chamber (103) and the ash hopper (102), and a push-pull temperature baffle mechanism (3) is installed on the outer wall of the furnace body (101). The push-pull temperature-blocking mechanism (3) is used to insulate the outer wall of the furnace body (101) and to control the contact area between the outer wall of the furnace body (101) and the air by pushing and pulling. The adjustable grate mechanism (2) uses rotation to adjust the grate gap to accommodate different sizes of fuel; the adjustable grate mechanism (2) includes a fixed grate frame (201), two connecting plates (202), a movable grate frame (203), several single grate sections (204), several double grate sections (205), and a connecting shaft (206); The fixed grate frame (201) is fixedly connected to the bottom of the inner wall of the main combustion chamber (103), the two connecting plates (202) are symmetrically fixedly connected to the bottom of the fixed grate frame (201), the movable grate frame (203) is rotatably connected between the two connecting plates (202), a number of single grate sections (204) are provided at the bottom of the movable grate frame (203), a number of double grate sections (205) are provided at the top of the movable grate frame (203), and the single grate sections (204) and double grate sections (205) are adapted to the inner wall of the fixed grate frame (201).

2. The novel multi-fuel stove according to claim 1, characterized in that: The push-pull temperature blocking mechanism (3) includes two push-pull guide rails (301), an arc-shaped temperature blocking back plate (302), two arc-shaped temperature blocking side plates (303), and two push-pull handles (304); Two push-pull guide rails (301) are symmetrically fixed to the outer side wall of the furnace body (101), the arc-shaped heat-shielding back plate (302) is fixedly connected to one side of the furnace body (101), two arc-shaped heat-shielding side plates (303) are slidably connected to the inner side wall of the two push-pull guide rails (301), the two arc-shaped heat-shielding side plates (303) are located on both sides of the arc-shaped heat-shielding back plate (302), and two push-pull handles (304) are respectively installed on one side of the two arc-shaped heat-shielding side plates (303).

3. The novel multi-fuel stove according to claim 1, characterized in that: A flame-blocking mechanism (5) is installed at the bottom of the inner wall of the smoke exhaust chamber (104). The flame-blocking mechanism (5) includes a flame-blocking disc (501), a sliding groove (502), a connecting arm (503), a first bevel gear (504), and a second bevel gear (505). The slide groove (502) is located at the bottom of the inner wall of the smoke exhaust chamber (104). The outer wall of the flame deflector (501) is slidably connected to the inner wall of the slide groove (502). One end of the connecting arm (503) is fixedly connected to the top of the flame deflector (501). The first bevel gear (504) is rotatably connected to the bottom of the inner wall of the smoke exhaust chamber (104). The other end of the connecting arm (503) is fixedly connected to one end of the first bevel gear (504). The second bevel gear (505) is rotatably connected to one side of the inner wall of the smoke exhaust chamber (104). The outer wall of the first bevel gear (504) meshes with the outer wall of the second bevel gear (505).

4. The novel multi-fuel stove according to claim 3, characterized in that: A return air inlet (70) is provided on one side of the inner wall of the ash hopper (102). A wind control baffle (69) is slidably connected to the inner wall of the return air inlet (70). An adjusting shaft (73) is fixedly connected to one side of the wind control baffle (69). One end of the adjusting shaft (73) is rotatably connected to one side of the inner wall of the ash hopper (102).

5. The novel multi-fuel stove according to claim 4, characterized in that: The adjustable grate mechanism (2), the flame baffle mechanism (5) and the adjusting shaft (73) are connected to the furnace body (101) by three extrusion sealing transmission mechanisms (4). Each of the three extrusion sealing transmission mechanisms (4) includes a hollow stud (401), a transmission shaft (402), a snap ring groove (403), a fixed lock nut (404), a clamping nut (405), an extrusion sleeve (406) and a packing (407). Wherein, one end of the hollow stud (401) penetrates the inner wall of the furnace body (101), the outer wall of the drive shaft (402) is rotatably connected to the inner wall of the hollow stud (401), the snap ring groove (403) is opened on one side of the outer wall of the drive shaft (402), the inner walls of the fixing lock nut (404) and the clamping nut (405) are threadedly connected to the outer wall of the hollow stud (401), one side of the fixing lock nut (404) abuts against the inner wall of the furnace body (101), the extrusion sleeve (406) and the packing (407) are both sleeved on one side of the outer wall of the drive shaft (402), the inner wall of the extrusion sleeve (406) is threadedly connected to the outer wall of the hollow stud (401), and the packing (407) is located between the inner wall of the extrusion sleeve (406) and one end of the drive shaft (402).

6. The novel multi-fuel stove according to claim 5, characterized in that: One end of the connecting shaft (206) passes through the inner wall of the connecting plate (202) and is fixedly connected to one side of the movable grate frame (203). One end of the drive shaft (402) of the three extrusion sealing transmission mechanisms (4) is fixedly connected to one end of the connecting shaft (206), the second bevel gear (505) and the adjusting shaft (73), respectively. The other end of the drive shaft (402) of the three extrusion sealing transmission mechanisms (4) is fixedly connected to an adjusting rocker arm (74).

7. The novel multi-fuel stove according to claim 1, characterized in that: A ash hopper sealing door (61) is installed on one side of the bottom of the furnace body (101), a feeding observation door (62) is installed on one side of the middle part of the furnace body (101), an induced draft fan (71) is installed on the other side of the bottom of the furnace body (101), and a flue pipe (72) is connected to one side of the upper surface of the furnace body (101).

8. The novel multi-fuel stove according to claim 1, characterized in that: A secondary combustion chamber (63) is provided between the exhaust chamber (104) and the main combustion chamber (103). A protruding fuel chamber (65) is provided on one side of the inner wall of the main combustion chamber (103). Air holes (64) are provided on the inner walls of both the secondary combustion chamber (63) and the protruding fuel chamber (65). A baffle grid (66) is detachably installed on one side of the inner wall of the main combustion chamber (103). An air curtain guide plate (67) is fixedly connected to the other side of the inner wall of the main combustion chamber (103). An ash hopper box (68) is slidably connected to the bottom of the inner wall of the ash hopper chamber (102).

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