27results about "Chamber doors" patented technology

The utility model discloses a heat insulation type boiler door structure, which relates to the technical field of boiler doors and is technically characterized by comprising a four-hole boiler mounting plate, the boiler door body is mounted on the outer side of the four-hole boiler mounting plate, and has the technical effects that the boiler door body structure is arranged, so that the effects of internal and external heat insulation and vacuum heat insulation are achieved, and the overall heat insulation performance is effectively improved; a cast iron furnace door shell of the boiler door body is movably installed on the rotary opening and closing mechanism through a positioning shaft hole, so that the cast iron furnace door shell is convenient to movably open and close, a cross-shaped heat insulation panel can be separated in the cast iron furnace door shell, a heat insulation vacuum cavity is formed in the inner side of the cross-shaped heat insulation panel, and effective vacuum heat insulation can be achieved through the heat insulation vacuum cavity. The two ends of the cross-shaped heat insulation panel are sleeved with the ceramic fiber panels, and the ceramic fiber panels have a good heat insulation effect and are in a honeycomb state, so that the heat insulation effect is effectively improved.

The utility model provides a pneumatic isolation door which comprises a boiler reinforcing body and a rear heat resisting shell, a set of isolation door bodies used for being mutually sealed and embedded with sealing doors are arranged on the left side of the lower end of the boiler reinforcing body, and a set of sealing doors used for closing the isolation door bodies are arranged on the inner sides of the isolation door bodies. A group of boiler bodies used for boiler operation are arranged on the rear side of the boiler reinforcing body, and a group of supporting seats used for supporting the boiler bodies are arranged at the lower ends of the boiler bodies. Combustion waste gas in the boiler body is exhausted through the exhaust guide pipe, the angle of the sealing door is adjusted through the rear limiting frame, the sealing door is turned over rightwards in an inclined mode through starting, and the motor is used for providing driving wheel power for the driving wheel and stretching the pneumatic rod to extend.

The utility model discloses a general type steam boiler, including the furnace shell, the lateral surface of furnace shell is passed through movable joint and has the sealing door cover, the lateral surface of furnace shell is erected and has the movable joint of air -blower, the upper end movable joint of furnace shell has the sealing cover, the lower extreme fixed connection of furnace shell has a plurality of base, the lateral surface fixed connection of sealing door cover has the first handle, the lateral surface fixed connection of furnace shell has the symmetry of rotary seat, the inside fixed connection of furnace shell has the symmetry of limit slot, movable joint in limit slot between furnace jar, the upper end of furnace shell is equipped with the heat dissipation hole, the sealing cover movable connection in heat dissipation hole, the lower extreme of furnace shell is passed through movable joint and has the steam stove, the lower extreme fixed connection of furnace shell has the sealing shell, the other side fixed connection of furnace shell is passed through and has the exhaust pipe. Through above -mentioned structure, can easily overhaul and maintain furnace jar, ensure that boiler operation is safe and stable, and simple and efficient operation enhances fuel combustion efficiency.

The utility model provides a combustion hearth which is characterized in that the combustion hearth comprises an inner furnace barrel, an outer furnace barrel, a fire grate, an air inlet assembly and an ash removal assembly, the inner furnace barrel is arranged in the outer furnace barrel, and a first gap is reserved between the inner wall of the inner furnace barrel and the inner wall of the outer furnace barrel. The fire grate is connected to the bottom of the inner furnace barrel and divides the outer furnace barrel into a main combustion chamber and an ash storage chamber. The air inlet assembly is arranged at the bottom of the outer furnace barrel and communicates with the lower portion of the inner furnace barrel, the air inlet assembly comprises an air inlet end and an air outlet end which are oppositely arranged in the extending direction of the air inlet assembly, and the air outlet direction of the air outlet end faces the fire grate. In the embodiment of the invention, the combustion hearth is provided with the inner furnace barrel and the outer furnace barrel, the fuel is combusted in the inner furnace barrel, and the combusted particles are blown out by the air inlet assembly and fall into the ash storage chamber below from the first gap between the inner furnace barrel and the outer furnace barrel, so that the content of dust entering a subsequent heat exchange device can be reduced to a greater extent; and the accumulation of combusted inorganic matters on the fire grate is less, and the probability of coking of the fire grate is lower.

The utility model discloses a safety protection device and relates to the technical field of boiler equipment, the safety protection device is applied to a manhole door, the manhole door comprises a hinge part and a locking part, the hinge part is arranged at the edge of one end of the manhole door, and the locking part is arranged at the end, away from the hinge part, of the manhole door. The safety protection device comprises a protection plate, a connecting structure and a lock catch structure, and the connecting structure is arranged on one side of the protection plate and connected with the hinge part; the lock catch structure is arranged at the end, away from the connecting structure, of the protection plate and connected with the locking part. According to the manhole door, the connecting structure is connected with the hinge part of the manhole door, stable connection of the protection plate and the hinge part in the opening process of the manhole door is ensured, the protection purpose is achieved, the lock catch structure is connected with the locking part of the manhole door, and the situation that personnel open the protection plate at will to enter a hearth under the condition that safety disclosure is not conducted is prevented; and therefore, the protection safety of the protection plate is ensured.

The utility model provides a boiler fire observation door, and belongs to the technical field of boilers. The boiler fire observation door solves the problems that an existing boiler fire observation door is complex in structure and inconvenient to use. According to the boiler fire observation door, a shell is provided with an observation end and a mounting end, the observation end of the shell is provided with a flange connecting disc, a flange pressing disc is arranged on the opposite side of the flange connecting disc, a high-temperature-resistant glass plate is arranged between the flange connecting disc and the flange pressing disc, a rotating shaft is arranged in the shell, and the left end of the rotating shaft is inserted into a positioning groove; the right end of the rotating shaft penetrates through the mounting hole and the mounting sleeve and then extends out of the mounting sleeve, a handle is arranged at the right end of the rotating shaft, the bottom end of the mounting sleeve is filled with filler, a filler cover arranged on the rotating shaft in a sleeving mode is arranged in the mounting sleeve, and an isolation door plate with one end arranged on the rotating shaft in a sleeving mode and fixedly connected with the rotating shaft is arranged in the shell. The fire observation door is simple in structural design and convenient to operate, and meanwhile heat in the boiler can be prevented from leaking from the fire observation door.

The invention relates to a liftable door (2) supporting mechanism (1) for grilling ovens that are intended for cooking food by retaining the heat produced by wood or coal combustion. The mechanism comprises two rigidly connected arms (1.1, 1.8), a primary arm (1.1) and another secondary arm (1.8), integrally rotating on respective rotation shafts (1.4) located on each side of the oven body, where an end of the secondary arm (1.8) is connected to the bottom of the door (2), and the opposite end of the assembly formed by both arms (1.1, 1.8) has a connecting rod (1.2) hinged to the primary arm (1.1) from which a counterweight (1.3) hangs. Thus, the assembly formed by both arms (1.1, 1.8) pivots on the rotation shaft (1.4), where the weight of the door (2) of the oven, at the end of the secondary arm (1.8), is held by the lever exerted on the rotation shaft (1.4) by the counterweight (1.3) that hangs from the primary arm (1.1).

The utility model discloses a self-locking boiler door, which relates to the technical field of boiler doors and is technically characterized by comprising a boiler door body. The furnace door rotating mechanism is fixedly connected to the outer wall of the furnace door body, and the other end of the furnace door rotating mechanism is fixedly connected with the boiler body; the protruding locking mechanisms are fixedly connected to the two ends of the furnace door body; and the locking limiting mechanism is located on the outer side of the protruding locking mechanism, and the locking limiting mechanism is installed on the boiler body. The technical effects are that the protruding locking mechanism is arranged, so that the boiler door body can automatically protrude when being locked, and the protruding locking mechanism can automatically protrude and be locked in the locking limiting mechanism; and the furnace door body is uniformly pressed when being closed, so that the furnace door body is tighter when being closed.

The firewood-burning gasification furnace comprises a gasification furnace body, a feeding port, a sealing door and a furnace opening, the feeding port is formed in one side of the gasification furnace body, a grate is arranged at the bottom end of the interior of the gasification furnace body, through holes are evenly formed in the bottom end of one side of the gasification furnace body, and the sealing door is arranged at the bottom end of the other side of the gasification furnace body. One side of the feeding port is connected with a sealing door through a hinge, a rolling shaft is arranged on the gasification furnace main body on one side of the feeding port through a bracket, connecting rods are arranged at the two ends of the rolling shaft, the connecting rods are uniformly connected with the sealing door through fixing pieces, and a driving motor is fixed at the top of the bracket; and the output end of the driving motor is connected with the rolling shaft. By installing the gasification furnace main body, the feeding hole, the sealing door, the bracket, the rolling shaft, the driving motor, the connecting rod and the fixing piece, a user does not need to touch the gasification furnace main body when adding fuel, so that the user is prevented from being scalded, and meanwhile, the pressing force of the sealing door is controlled through the torque of the driving motor, so that accidental opening is prevented.

The utility model discloses an improved gasification furnace ventilation fan which comprises a body, and a smoke pipe is connected to the surface of one side of the top of the body in a penetrating mode. An air bellow is fixedly installed on the surface of one side of the body, a fan is fixedly installed in the air bellow, installation parts are fixedly connected to the two sides of the fan, an air outlet pipe is fixedly installed on the surface of one side of the fan, and a conveying pipe is fixedly installed on the surface of the other side of the fan. An air inlet pipe is fixedly mounted on the surface of one side, far away from the fan and penetrating through the air bellow, of the conveying pipe; according to the fan, the filter part is arranged, so that dust in air can be filtered, the amount of dust entering the fan is reduced, the situation that a bearing and an impeller are damaged is reduced, and the service life of the fan can be prolonged to a certain extent; and the filter part can be more conveniently mounted and dismounted, so that the replacement efficiency of the filter part is improved.

The utility model discloses a novel energy-saving type fire observation door special-shaped piece. Comprising a fire observation door brick, a fire observation opening formed in the fire observation door brick, a fire observation door plate movably arranged on the outer side of the fire observation door brick, a heat insulation screen arranged on the side, facing the fire observation door brick, of the fire observation door plate and used for being connected with the fire observation opening in an inserted mode, and a handle arranged on the side, away from the fire observation door brick, of the fire observation door plate, and further comprises a locking assembly. The locking assembly comprises locking tongues movably arranged on the periphery of the heat insulation screen, and locking grooves which are in one-to-one correspondence with the locking tongues and used for being connected with the locking tongues in an inserted mode are formed in the periphery of the inner side of the fire observation opening. According to the novel energy-saving type fire observation door special-shaped piece, the locking assembly and the handle are arranged in a linkage mode, unlocking can be achieved only by rotating the handle during opening, loosening can be achieved during fixing, a locking mechanism does not need to be operated independently, and convenience is improved.

The invention relates to a biomass boiler (1) with an exhaust gas duct (3) which, together with a combustion chamber (2), forms a hot gas zone. Outside the hot gas zone, a plasma chamber (5) is provided, connected to the exhaust gas duct (3), for generating a low-temperature plasma. A blower (6) is provided for generating a conveying flow (7) that passes through the plasma chamber (5) to convey the low-temperature plasma into the exhaust gas duct (3). The plasma chamber (5) is connected to an ambient air supply (10). To reduce potential odor emissions from existing biomass boilers (1) in a space-saving and retrofittable manner, it is proposed that the plasma chamber (5) be connected to the boiler housing (4) or supported by the exhaust gas duct (3).

The utility model discloses a waste heat boiler manhole door opening cooling pipe arrangement structure and relates to the technical field of waste heat boilers, a left cooling pipe and a right cooling pipe are close and parallel to each other and extend to the middle of the upper edge of a manhole door opening from top to bottom to be vertically bent, the left cooling pipe extends towards the left edge side of the manhole door opening, and the right cooling pipe extends towards the right edge side of the manhole door opening. The left cooling pipe and the right cooling pipe extend to the lower edge of the manhole door opening and obliquely extend to the lower portion of the middle of the lower edge of the manhole door opening. The damage rate of the cooling pipe can be reduced, and safe operation of the waste heat boiler is ensured.

The invention discloses a double-adjustment magnetic pre-tightening anti-explosion door device, and relates to the technical field of boiler anti-explosion doors, the double-adjustment magnetic pre-tightening anti-explosion door device comprises a boiler pipeline and a mounting bent seat welded on the boiler pipeline, the mounting bent seat is connected with a mounting seat, and the mounting seat is connected with a connecting cover; the device further comprises a first gland and a second gland. The first gland abuts against the opening edge of the mounting base, and a spring is arranged between the first gland and the top wall of the connecting cover. The second gland is arranged on the outer top wall of the connecting cover and connected with a magnet fixed to the outer top wall of the connecting cover in a magnetic attraction mode. The second gland is in threaded connection with a bolt, and the bolt penetrates through the top wall of the connecting cover to abut against the vertical rod on the top face of the first gland. The magnetic attraction force of the second gland and the magnet acts on the first gland through the bolt and the vertical rod, and then it is guaranteed that the first gland is stably sealed before the pressure of the pressure relief channel reaches the detonation threshold value. According to the anti-explosion door, the elastic force of the spring and the pre-tightening force of the magnet bolt are combined, so that the pressure relief channel can keep stable sealing when the detonation threshold value is not reached, leakage is effectively prevented, and the reliability of the anti-explosion door is improved.

The utility model discloses a boiler furnace door with protection structure relates to boiler furnace door technical field, and its technical key points include boiler body mounting seat, boiler sealing door board is installed and is connected on the outside of boiler body mounting seat, positioning opening and closing mechanism, positioning opening and closing mechanism installation is connected on the right side of boiler body mounting seat and boiler sealing door board, and is distributed up and down, cooling protection mechanism, cooling protection mechanism installation is connected in the inside of boiler sealing door board, cooling protection mechanism is cyclically connected to outside cooling equipment, and the technical effect is that cooling protection mechanism can receive the cooling medium of outside, thereby can carry out the cooling to boiler sealing door board, avoid the scalding of personnel and touch high temperature boiler sealing door board, and can effectively improve the sealing service life of boiler sealing door board.

The utility model provides a laboratory waste treatment device for microbiological research, and relates to the field of waste treatment. The top piece structure is installed at the top end of the device body, the top end of the top piece structure and the outer portion of the pipeline connecting position are sleeved with a sleeve piece, the sleeve piece made of rubber is of an annular structure, the upper side and the lower side of the interior of the sleeve piece are each provided with a blocking piece structure, and the blocking piece structures of the annular structures are made of flexible rubber. The supporting block structure supports the auxiliary block, the positioning rod structure and the sleeve part to be positioned, installed and fixed, then the control pipeline is connected with the top end of the top part structure, then fastening connection is conducted through a bolt, the sleeve part is located at the connecting position to be closed, meanwhile, the blocking part structure assists stress contact sealing, the sealing effect is improved, and when smoke or gas is exhausted, the smoke or gas is exhausted. According to the laboratory waste treatment device for the microorganism research, smoke cannot overflow through the connecting position, and the problem that in the incineration process of a common laboratory waste treatment device for the microorganism research, smoke easily overflows through the pipeline connecting position, and the sealing effect is affected is solved.

The heat preservation type flameless combustion furnace comprises a shell, a heat preservation layer is fixedly connected to the inner surface of the shell, and a flameless combustion furnace body is arranged on the inner side of the heat preservation layer; a straight pipe fixedly penetrates through the bottom of the flameless combustion furnace body, the straight pipe fixedly penetrates through the inner bottom of the heat preservation layer, extends to the position below the shell and is fixedly connected with the shell, and an air supply pipe fixedly penetrates through one side of the outer surface of the straight pipe. The air supply pipe penetrates through the inner wall of one side of the heat preservation layer, extends out of the shell and is fixedly connected with the shell. According to the flame-free combustion equipment, the shell, the heat preservation layer and the heat preservation box door are additionally arranged on the outer layer of original flame-free combustion equipment, the furnace body, the air supply pipe, the straight pipe and the fuel supply assembly are wrapped, heat preservation can be conducted on the furnace body, meanwhile, heat emitted by the furnace body can preheat a catalyst passing through the straight pipe and supplied fuel, follow-up combustion is facilitated, and the combustion efficiency is improved. And great loss and waste of heat can be avoided.

The invention discloses a partition door device for reducing air leakage of a boiler. The partition door device comprises a slag hopper and a slag discharging assembly. The slag discharging assembly is connected to the lower portion of the slag hopper and comprises a partition door assembly and a slag drying machine, the partition door assembly comprises a supporting shell, a first partition door mechanism and a second partition door mechanism, the first partition door mechanism comprises a first driving mechanism and a first partition door, the first partition door is movably arranged in the supporting shell, the first driving mechanism is connected with the first partition door, and the second partition door is movably arranged in the supporting shell. The second partition door mechanism comprises a second driving mechanism and a second partition door, the second partition door is movably arranged in the supporting shell, and the second driving mechanism is connected with the second partition door. According to the partition door device for reducing air leakage of the boiler, the first partition door mechanism and the second partition door mechanism are alternately opened and closed to sequentially discharge slag, high-temperature flue gas is prevented from entering a slag dryer when the partition door is opened to discharge the slag, and heat loss and air leakage of the boiler in the slag discharge process can be reduced.

A furnace body air distribution automatic wet-type deslagging burner relates to the technical field of wet-type deslagging burners and is characterized in that a flap valve is mounted at a feeding end of a furnace body, a blanking port is mounted on a feeding port of the flap valve, a thermocouple and a furnace body blowpipe are respectively mounted on the furnace body, a fire grate rotating mechanism is mounted at a discharging end of the furnace body, and the fire grate rotating mechanism is mounted at a discharging end of the furnace body. The furnace body is provided with a furnace grate rotating mechanism, the air inlet end of the furnace grate rotating mechanism and the air inlet end of the furnace body blowing pipe are both communicated with the exhaust end of the draught fan, a furnace grate is installed at the rotating end of the furnace grate rotating mechanism and located in the furnace body, an ash tray is installed on the furnace body, and the feeding end of the ash tray corresponds to the discharging end of the furnace body. According to the furnace body air distribution automatic wet type slag discharging combustion machine, sufficient air can be blown into a furnace, the tonnage of the combustion machine can be made to be large, meanwhile, it can be avoided that slag is formed in a fire grate to block an air outlet, the temperature of the fire grate can be effectively reduced, the fire grate is prevented from being burnt out by high temperature, the replacement frequency of the fire grate is reduced, and the production efficiency is effectively improved.

The utility model discloses a boiler explosion door which comprises a fixed seat and a cover plate, the fixed seat is fixedly connected to an explosion-proof opening of a boiler, the upper end of the fixed seat is provided with a sealing groove, the sealing groove is arranged around the explosion-proof opening, and the fixed seat is fixedly connected with a guide column; the cover plate is arranged at the upper end of the fixing seat, a guide hole is formed in the cover plate, the guide column penetrates through the guide hole, a sealing protruding edge is arranged at the lower end of the cover plate in a protruding mode, the sealing protruding edge is arranged in the circumferential direction of the cover plate, the sealing protruding edge is arranged in the sealing groove, and the sealing protruding edge abuts against the bottom wall of the sealing groove. According to the boiler explosion door, the sealing effect can be improved, and the reliability is enhanced.

To make the solid combustion inlet safer to open and close. [Solution] The solid fuel combustion device includes a combustion chamber with an opening, a door that closes the opening, a link mechanism that supports the door to rotate vertically, and a weight that acts on the link mechanism to push the door upward. Preferably, the weight includes a first weight that balances the weight of the door and a second weight whose direction of action on the link mechanism is reversed depending on the rotational position of the door.

The utility model relates to the technical field of boilers, in particular to a biomass water tube boiler convenient for ash removal, which comprises a boiler body, a chain base mounted at the bottom of the boiler body, a feeding hopper mounted at one end of the boiler body, a flue gas duct connected to the other end of the boiler body, a hearth arranged in the boiler body and close to the feeding hopper, and an upper boiler barrel mounted at the upper part in the boiler body, a lower boiler barrel is arranged on the lower portion of the upper boiler barrel, a heat exchange bin is arranged on the upper portion in the boiler body, and a plurality of heat exchange pipes are vertically arranged in the heat exchange bin. According to the biomass water tube boiler facilitating ash removal, the ash blower is arranged in the boiler, ash blowing is conducted on the heat exchange tubes in the heat exchange bin through the air supply pipe and the air jet opening, accumulated ash and slag on the heated surface are effectively removed, the heated surface is kept clean, and the heat transfer efficiency of the boiler is improved. And the ash discharge port and the ash cleaning port are formed in the bottom of the boiler body, so that ash at the hearth and the chain base can be conveniently and timely discharged, accumulation and blockage of the ash are avoided, and stable operation of the boiler is guaranteed.

The utility model belongs to the technical field of swing type explosion-proof doors, and discloses a swing type explosion-proof door for a furnace, which comprises a main body device used for sealing and preventing explosion through self weight, and a pressure relief device mounted on the main body device and used for outwards opening along with impact to relieve pressure and reduce impact, four adjusting assemblies used for elastic pressing and sliding pressing force adjusting are evenly arranged at the four corners of the pressure relief device. The pressure relief device comprises a pressure relief door, four pressing lugs are evenly arranged on the circumference of the pressure relief door, and a first sealing ring is installed on one side of the pressure relief door. According to the swing type explosion-proof door for the furnace, by means of the arrangement of elastic pressing and outward opening along with impact for pressure relief, pressure relief is conducted when explosion occurs, impact borne by the door plate is reduced, and the situation that the door shaft is pulled apart due to the fact that the door plate bears too large force is avoided; through the arrangement of sliding adjustment pressing force, adjustment of a pressure relief threshold value is achieved, and different requirements are met; and through the arrangement of double sealing, the sealing performance of the pressure relief position is improved.

The utility model discloses a hot air control valve spindle air leakage treatment device which comprises an installation frame, an installation cavity is formed in the installation frame, the installation cavity penetrates through the front surface and the rear surface of the installation frame, an installation shell is arranged in the installation cavity, the installation shell is not provided with a front wall and a rear wall, and a servo motor is fixedly connected in the installation shell. A rotating shaft is fixedly connected to the output end of the servo motor, a sealing sleeve is arranged on the surface of the rotating shaft, the end, away from the servo motor, of the rotating shaft penetrates through the mounting shell and the mounting frame, a door plate is fixedly connected to the end, away from the servo motor, of the rotating shaft, a sealing plate is arranged at the front end of the mounting shell, and a fan is fixedly connected to the rear surface of the sealing plate; the air outlet end of the fan, the servo motor and the rotating shaft are oppositely distributed front and back, the front surface of the sealing plate is fixedly connected with a limiting plate, and when the device is used, the rear end of the limiting plate is clamped to the mounting frame. Through the structure, the negative influence caused by air leakage is reduced, and the convenience of overhauling the device and the door shaft is improved.

The utility model relates to the technical field of hearths, and provides a combustion furnace hearth which comprises a hearth body, a plurality of air inlet holes are formed in the side face of the hearth body, the air inlet holes are connected with an air distribution system, the air distribution system comprises a plurality of air channels, the air channels are communicated with the air inlet holes, and the air channels are communicated with the air inlet holes. One end of the air duct extends to the outside of the hearth body and is communicated with an air feeder; a feeding system is arranged on one side of the hearth body and comprises a feeding hopper and a feeding cavity formed in the bottom of the feeding hopper, one end of the feeding cavity is communicated with the feeding hopper, and the other end of the feeding cavity is communicated with the hearth body; the top face of the combustion furnace is provided with the feeding port, the feeding port and the top of the feeding hopper are oppositely arranged, the air supply uniformity of the inner space of the hearth can be guaranteed, sufficient supply of fuel in the combustion process can be kept, and automatic feeding can be conducted without opening a hearth door.

The invention discloses a quick-open type coal-fired unit boiler manhole door sealing structure and a using method thereof, and relates to the technical field of manhole door sealing. Comprising a flange, the top end of the flange is rotationally connected with a manhole door, a connecting piece is fixed to the bottom end of the manhole door, a plurality of limiting openings are formed in the connecting piece, a first limiting piece is arranged in the flange and comprises a plurality of fixing sleeves fixed to the inner wall of the flange, the fixing sleeves correspond to the limiting openings in a one-to-one mode, and heat-sensitive elastomers are fixed in the fixing sleeves. By arranging the first limiting piece, when the temperature in a boiler rises, a heat-sensitive elastomer expands to drive a moving block to move forwards, the moving block moves to drive a limiting rod to move, the limiting rod is inserted into a limiting opening, and a connecting piece at the bottom end of the manhole door is fixed; the top end and the bottom end of the manhole door are fixed through the first limiting piece and the second limiting piece, and the manhole door, the flange and an external fixing device are prevented from loosening due to the high-temperature and high-pressure environment.

The utility model belongs to the technical field of combustors, and particularly relates to a combustor door cover. The utility model provides an external door cover which comprises a shell, a door cover body, a door cover body and a door cover body. The lifting assembly is arranged on the shell and is suitable for moving the door body to the position above the opening end; the lifting assembly comprises a driving structure, a pull rod is arranged on the driving structure, a telescopic hook is arranged at one end of the pull rod, and the telescopic hook is suitable for hooking a handle on the door body; wherein the driving structure is suitable for driving the pull rod to move, so that the telescopic hook penetrates through the handle and lifts the door body upwards along with the pull rod; the lifting assembly is arranged above the door body, the driving structure drives the pull rod to move, the handle on the door body is hooked through the telescopic hook, then the whole door body is lifted upwards, the effect that the door body is directly moved away from the open end after a cover is opened is achieved, and the door body does not need to be additionally positioned and then hoisted and moved away; the internal maintenance efficiency of the combustor is improved, and the operation safety of the combustor is enhanced.