CN110779016A

CN110779016A - Cremator operating door system with explosion-proof function and method

Info

Publication number: CN110779016A
Application number: CN201911049245.2A
Authority: CN
Inventors: 孙庆驰
Original assignee: WEIHAI HANGTAI ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
Current assignee: WEIHAI HANGTAI ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-02-11

Abstract

The invention discloses a cremator operating door system with an explosion-proof function and a method thereof, wherein the system comprises an operating door and a spraying mechanism, wherein the operating door comprises a door frame, a door body, a pop-up mechanism and a viewing window; the door frame is fixed on the body of the cremator, and the door body is hinged with the door frame; the pop-up mechanism is arranged in the installation channel of the door body and is connected with a lock hole formed on the door frame; the ejection mechanism consists of an adjusting screw seat, a positioning shaft and a spring; the outer side wall of the door body is also provided with a viewing window and a smoke alarm; the spraying mechanism is positioned above the door frame and comprises a spraying box, a connecting pipe, a spraying pipe, a spray head and the like. The method comprises the following steps: when the internal pressure of cremator is too big, this operation door pops open through pop-up mechanism is automatic to realize automatic pressure release, simultaneously, spray the mechanism and put out a fire and handle, avoid as far as possible to explode accidents such as stove, and this operation door has the observation window of big visual angle, makes the staff need not open the furnace gate can observe the live work of furnace.

Description

Cremator operating door system with explosion-proof function and method

Technical Field

The invention relates to an operating door system of a cremator and a method thereof, in particular to an operating door system of a cremator with an explosion-proof function and an explosion-proof use method thereof.

Background

The cremator belongs to one type of incinerator, and once an operation door used by the cremator at the present stage is closed, the operation door cannot be automatically flicked, and the cremator does not have an explosion-proof function. At present, along with the continuous upgrading and upgrading of products of the cremator, the sealing performance of the cremator is better and better, the furnace temperature can reach nearly 800-900 ℃ during the process of burning the remains of the cremator, the pressure in the furnace is too high due to the too high temperature, the closed operation door cannot be automatically bounced open, the pressure relief in the furnace is difficult to realize, the accidents such as furnace explosion and the like are very easy to cause, and therefore the existing operation door has huge potential safety hazards. Meanwhile, the observation window on the operation door of the existing cremator has the defect of small observation visual angle, so that the combustion condition in the hearth is difficult to effectively observe, and the operation door needs to be opened for observation. However, the tail gas generated by combustion in the hearth is not treated by the tail gas treatment equipment, harmful waste gas can be scattered into a workshop by opening the operation door, the environment is polluted, the health of workers is affected, the possibility of flame rushing out is realized, and great potential safety hazards exist.

Disclosure of Invention

In order to solve the defects of the technology, the invention provides an operation door system of a cremator with an explosion-proof function and a method thereof.

In order to solve the technical problems, the invention adopts the technical scheme that: a cremator operating door system with an explosion-proof function comprises an operating door and a spraying mechanism, wherein the operating door comprises a door frame, a door body, an ejection mechanism and a viewing window;

the door frame is fixed on the body of the cremator through the fixing component, the door body is arranged in the door frame and is hinged with the door frame; the door body is provided with an installation channel in one end, the ejection mechanism is installed in the installation channel, and the ejection mechanism is connected with the door frame;

the pop-up mechanism consists of an adjusting screw seat, a positioning shaft and a spring, the mounting channel comprises a wide channel and a narrow channel which are communicated into a whole, a lock hole is formed in the door frame, and the lock hole is positioned on one side of the door frame, which is connected with the pop-up mechanism; the adjusting screw seat is arranged in the wide channel, the positioning shaft is positioned in the adjusting screw seat, one end of the positioning shaft penetrates through the adjusting screw seat to be connected with the lock hole, the other end of the positioning shaft extends into the narrow channel, and the spring is sleeved on the positioning shaft and positioned in the narrow channel;

the outer side wall of the door body is provided with a handle and is fixedly provided with a mounting plate, the mounting plate is vertical to the door body, and the mounting plate is provided with a smoke alarm;

a tapered hole is also formed in the door body, and the inner diameter of the tapered hole is gradually reduced from back to front; the observation window is positioned at the front end of the tapered hole and comprises a fixed seat, a glass sheet and an outer nut; the glass sheet is fixed at the front end of the fixed seat, the fixed seat is connected with the conical hole in a sealing way at the rear end, and the fixed seat is fixed on the door body through a countersunk head screw; the outer nut is positioned on the front side of the fixed seat and is fixedly connected with the fixed seat;

a fixed platform is fixedly arranged above the door frame, and the spraying mechanism is arranged on the fixed platform; the spraying mechanism comprises a spraying box, a connecting pipe, a spraying pipe and a spray head, the top of the spraying box is fixedly communicated with a liquid interface, the spraying box is communicated with the spraying pipe through the connecting pipe, the connecting pipe is provided with an electromagnetic valve, and the electromagnetic valve is electrically connected with the smoke alarm; the both ends of shower are sealed to be provided with stopper head and shower nozzle and are linked together, and the shower nozzle is provided with a plurality ofly, and a plurality of shower nozzles are equidistant to be distributed at the front end of shower.

Further, the fixed subassembly is provided with a plurality ofly and the fixed subassembly comprises hexagon bolt and nut.

Furthermore, the door frame is fixedly connected with a door frame hinge, the door body is fixedly connected with a door body hinge at one end, the door frame hinge is longitudinally aligned with the door body hinge, a door rotating shaft penetrates through the door frame hinge and the door body hinge together, two ends of the door rotating shaft are connected with nuts, and gaskets are arranged between the nuts and the door frame hinge.

Furthermore, the positioning shaft comprises a head part, a push plate part and a rod part which are sequentially connected, the head part is in a smooth arc shape, the head part penetrates through the adjusting screw seat and then is connected with a lock hole on the door frame, the rod part penetrates through the adjusting screw seat and then extends into the narrow channel, and the spring is sleeved on the rod part.

Further, the diameter of the push plate portion is larger than that of the narrow passage.

Further, the glass sheet is made of high-temperature-resistant quartz glass.

Furthermore, the door body is internally provided with a cavity which is filled with heat insulation leaf cotton.

Furthermore, a pouring layer is arranged on the surface of one side, which is in contact with the hearth of the cremator, of the door body, and the pouring layer is made of pouring materials.

Further, the casting material is a mixture of refractory cement, aggregate and steel fiber.

A working method of an operation door system of a cremator with an explosion-proof function specifically comprises the following steps: under a normal state, the hearth of the cremator is in negative pressure; when the operation door is in an abnormal state, the pressure in the hearth of the cremator is in positive pressure and can continue to rise, the pressure in the hearth applies an outward acting force to the door body of the operation door to push the head of the positioning shaft in the pop-up mechanism to slide out of the lock hole, the spring is extruded in the process of sliding out, the distance between the positioning shaft and the lock hole is increased along with the compression of the spring, the head of the positioning shaft is completely separated from the lock hole, the spring restores the original shape, meanwhile, the door body rotates along the door frame and is bounced, the operation door is automatically opened, and high-pressure gas in the hearth is decompressed; in the process of pressure relief, the smoke alarm monitors that the smoke concentration in the environment exceeds the set value of the smoke alarm, the smoke alarm gives an alarm, meanwhile, the smoke alarm opens the electromagnetic valve in the spraying mechanism, the liquid fire extinguishing agent which is held in the spraying box in advance flows into the spraying pipe, and finally the spraying pipe sprays the smoke, so that the high-temperature smoke subjected to pressure relief is subjected to fire extinguishing treatment, and a fire disaster is avoided.

The invention discloses an operation door system of a cremator with an explosion-proof function, which is provided with a pop-up mechanism, when the pressure in the cremator is overlarge, the operation door automatically pops open through the pop-up mechanism so as to realize automatic pressure relief, avoid accidents such as furnace explosion and the like as far as possible, and effectively reduce the potential safety hazard of the operation door. Meanwhile, the operating door is provided with the large-visual-angle observation window, so that the working condition of the hearth can be observed without opening the furnace door by workers, harmful waste gas drifting and flame rushing out are avoided, the use safety of the cremator is further improved, and a healthier working environment is provided for the workers. In addition, the spraying mechanism that adds can be effectual with the high temperature flue gas or the flame of pressure release handle of putting out a fire, has further improved the explosion-proof security of this cremator operation door system. The invention also discloses an explosion-proof working method of the cremator operating door system with the explosion-proof function, by the method, when the inside of the cremator is in an abnormal state, the operating door automatically pops open to realize automatic pressure relief, thereby greatly improving the use safety, and simultaneously, the operating door system also has a certain fire extinguishing function to ensure the working safety of the cremator operating door system.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a structural sectional view of the operating door of fig. 1 taken along the W-W axis.

Fig. 3 is a structural sectional view of the operating door of fig. 1 along the Y-Y axis.

Fig. 4 is an enlarged schematic view of the ejection mechanism in fig. 2.

FIG. 5 is a schematic structural view of the spraying mechanism in FIG. 1

In the figure: 1. a door frame; 2. a door body; 3. a spraying mechanism; 4. a handle; 5. an ejection mechanism; 6. a viewing window; 7. a door frame hinge; 8. a door body hinge; 9. a door hinge; 10. a nut; 11. a gasket; 12. a tapered hole; 13. a lock hole; 14. a cavity; 15. mounting a plate; 16. a smoke alarm; 17. a fixing assembly; 18. a hexagon bolt; 19. a nut; 20. a fixed platform; 31. a spray box; 32. a liquid interface; 33. a connecting pipe; 34. an electromagnetic valve; 35. a shower pipe; 36. a spray head; 37. plugging a plug; 51. installing a channel; 511. a wide channel; 512. a narrow channel; 52. adjusting the screw seat; 53. positioning the shaft; 531. a head portion; 532. a push plate portion; 533. a rod portion; 54. a spring; 61. a fixed seat; 62. a glass sheet; 63. an outer nut; 64. countersunk head screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

An operation door system of a cremator with an explosion-proof function comprises an operation door and a spraying mechanism 3, wherein the operation door comprises a door frame 1, a door body 2, an ejection mechanism 5 and a viewing window 6, as shown in figure 1.

Firstly, door frame 1 is fixed on the fuselage of cremator through fixed subassembly 17, realizes fixing through setting up a plurality of fixed subassemblies on door frame 1 promptly, and fixed subassembly 17 comprises hex bolts 18 and nut 19, and the installation is all very convenient with the dismantlement.

The door body 2 is arranged in the door frame 1, and when the operation door is closed, the door body 2 can be clamped in the door frame 1; simultaneously, the door body 2 is articulated mutually with door frame 1, when the stove internal pressure is too big, to open the door body 2 fast, the concrete articulated mode of the door body 2 and door frame 1 does: 1 fixedly connected with door frame hinge 7 of door frame, the door body 2 is at one end fixedly connected with door body hinge 8, door frame hinge 7 vertically aligns with door body hinge 8 and door frame hinge 7 has passed door pivot 9 jointly with door body hinge 8 in, and the both ends of door pivot 9 are connected with nut 10, still are provided with gasket 11 between nut 10 and door frame hinge 7. Therefore, the door body 2 can rotate along the door rotating shaft 9, and the operation door is convenient to open and close.

As shown in fig. 2 and 4, the door body 2 has an installation channel 51 formed therein, the pop-up mechanism 5 is installed in the installation channel 51, and the pop-up mechanism 5 is connected to the door frame 1. Usually, the cremator is the negative pressure state in the furnace under normal operating condition, if parts such as pressure relief device that originally broke down after, can lead to the pressure increase in the furnace, become malleation and constantly increase, and traditional cremator operation door is in case close the back, then can't bounce open, easily induces accidents such as explode the stove. However, according to the operation door system of the cremator with the explosion-proof function, which is disclosed by the invention, due to the pop-up mechanism 5, when the pressure in the hearth is positive, the operation door can be automatically popped up through the pop-up mechanism 5 along with the continuous increase of the positive pressure, so that the pressure relief is realized, and the accidents such as furnace explosion are reduced.

The specific setting mode of the ejection mechanism 5 is as follows: the pop-up mechanism 5 consists of an adjusting screw seat 52, a positioning shaft 53 and a spring 54, the mounting channel 51 comprises a wide channel 511 and a narrow channel 512 which are communicated into a whole, a lock hole 13 is formed in the door frame 1, and the lock hole 13 is positioned on one side of the door frame 1, which is connected with the pop-up mechanism 5; the adjusting screw seat 52 is installed in the wide passage 511, the positioning shaft 53 is located in the adjusting screw seat 52, one end of the positioning shaft 53 passes through the adjusting screw seat 52 and is connected with the lock hole 13, the other end extends into the narrow passage 512, the spring 54 is sleeved on the positioning shaft 53 and is located in the narrow passage 512, that is: the positioning shaft 53 comprises a head portion 531, a push plate portion 532 and a rod portion 533 which are connected in sequence, the head portion 531 is in a smooth arc shape, the head portion 531 is connected with the lock hole 13 on the door frame 1 after penetrating through the adjusting screw seat 52, the rod portion 533 extends into the narrow channel 512 after penetrating through the adjusting screw seat 52, and the spring 54 is sleeved on the rod portion 533. Therefore, in the process of closing the operation door, the head 531 gradually slides along the doorframe 1 and is clamped in the lock hole 13, and the positioning shaft 53 is propped against by the tension of the spring 54, so that the door body 2 is ensured to be closed in the doorframe 1; in the process of opening the operation door, the handle 4 is pulled open, an outward acting force is applied to the door body 2, the smooth arc-shaped head 531 slides out of the lock hole 13, in the process of sliding out, the spring 54 is extruded by the push plate part 532, so that the head 531 of the positioning shaft 53 is separated from the lock hole 13, the operation is realized, and in order to ensure that the spring 54 can be extruded by the push plate part 532, the diameter of the push plate part 532 is larger than that of the narrow channel 512.

In a similar way, when the temperature in the furnace is too high, the pressure in the furnace becomes large, so that an outward acting force is applied to the door body 2, the door body 2 is automatically opened, automatic pressure relief is realized, and an explosion-proof function is realized. Therefore, the invention also discloses an explosion-proof use method of the operation door system of the cremator with the explosion-proof function, which comprises the following steps: under a normal state, the hearth of the cremator is in negative pressure; during abnormal state, the furnace internal pressure of cremator is in the malleation and can continue to rise, the pressure in the furnace exerts outside effort to the door body 2 of this operation door, promote pop-up mechanism 5 in the head of location axle 53 follow lockhole 13 in the roll-off, at the in-process of roll-off, spring 54 receives the extrusion, the interval of location axle 53 and lockhole 13 is increasingly big along with the compression of spring 54, make the head of location axle 53 and lockhole 13 break away from completely, the head of location axle 53 breaks away from spring 54 completely with lockhole 13 and resumes the original state, simultaneously, door body 2 rotates and is flicked along door frame 1, the automation of this operation door is opened, high-pressure gas pressure release in the furnace, realize explosion-proof function, thereby avoid accident such as explosion as possible, the potential safety hazard that the operation door exists has effectively been reduced.

When the pressure is released, a large amount of high-temperature smoke in the furnace flows out, and at the moment, the smoke alarm 16 monitors that the smoke concentration in the environment is higher than a set value, so that an alarm is given out. The smoke alarm 16 is arranged on the mounting plate 15, and the mounting plate 15 is perpendicular to the door body 2 and is fixedly connected with the door body 2. For the smoke alarm 16, an alarm commonly used in the industry is adopted, and the acquisition is easy and the sensitivity is high.

When a large amount of high-temperature flue gas is discharged outside, the high-temperature flue gas is often sprayed along with flames, so that potential safety hazards of fire hazard exist, therefore, the operation door system of the cremator with the anti-explosion function disclosed by the invention is also provided with a spraying mechanism 3 as shown in fig. 5, and the specific arrangement mode of the spraying mechanism 3 is as follows: the spraying mechanism 3 is arranged on the fixed platform 20, and the fixed platform 20 is fixedly arranged above the door frame 1; the spraying mechanism 3 comprises a spraying box 31, a connecting pipe 33, a spraying pipe 35 and a spray head 36, the top of the spraying box 31 is fixedly communicated with a liquid interface 32, a liquid fire extinguishing agent is contained in the spraying box 31, the spraying box 31 is communicated with the spraying pipe 35 through the connecting pipe 33, an electromagnetic valve 34 is arranged on the connecting pipe 33, and the electromagnetic valve 34 is electrically connected with the smoke alarm 16; the two ends of the spray pipe 35 are provided with sealing heads 37 in a sealing manner, the spray pipe 35 is communicated with the spray heads 36, the spray heads 36 are provided with a plurality of spray heads, and the plurality of spray heads are distributed at the front end of the spray pipe 35 at equal intervals. Therefore, when the smoke alarm 16 gives an alarm, the electromagnetic valve 34 is opened, so that the liquid fire extinguishing agent in the spraying box 31 flows out, and the fire extinguishing function is realized by spraying through the spray head. Through spraying mechanism 3, this cremator operating door system's safety in utilization has been improved greatly.

Therefore, the working method of the operation door system of the cremator with the explosion-proof function disclosed by the invention specifically comprises the following steps: under a normal state, the hearth of the cremator is in negative pressure; when the operation door is in an abnormal state, the pressure in the hearth of the cremator is in positive pressure and can continue to rise, the pressure in the hearth applies an outward acting force to the door body 2 of the operation door to push the head of the positioning shaft 53 in the pop-up mechanism 5 to slide out from the lock hole 13, the spring 54 is extruded in the sliding-out process, the distance between the positioning shaft 53 and the lock hole 13 is increased along with the compression of the spring 54, so that the head of the positioning shaft 53 is completely separated from the lock hole 13, the spring 54 restores the original shape, meanwhile, the door body 2 rotates along the door frame 1 and is bounced open, the operation door is automatically opened, and high-pressure gas in the; in the pressure relief process, the smoke alarm 16 monitors that the smoke concentration in the environment exceeds the set value of the smoke alarm 16, the smoke alarm 16 gives an alarm, meanwhile, the smoke alarm 16 opens the electromagnetic valve 34 in the spraying mechanism 3, the liquid fire extinguishing agent pre-contained in the spraying box 31 flows into the spraying pipe 35, and finally the liquid fire extinguishing agent is sprayed from the spray head 36 to extinguish the high-temperature smoke subjected to pressure relief, so that the fire is avoided.

In addition, the operating door system of the cremator with the explosion-proof function disclosed by the invention is characterized in that the door body 2 is provided with the observation window 6 for observing the sight line at a large wide angle, as shown in fig. 2 and 3, the door body 2 is internally provided with a tapered hole 12, and the inner diameter of the tapered hole 12 is gradually reduced from back to front; the observation window 6 is positioned at the front end of the tapered hole 12, and the observation window 6 comprises a fixed seat 61, a glass sheet 62 and an external nut 63; the glass sheet 62 is fixed at the front end of the fixed seat 61, the fixed seat 61 is connected with the tapered hole 12 at the rear end in a sealing way, and the fixed seat 61 is fixed on the door body 2 through a countersunk head screw 64; the external nut 63 is located at the front side of the fixed seat 61 and is fixedly connected with the fixed seat 61. Wherein, glass piece 62 adopts high temperature resistant quartz glass to avoid the high temperature loss in the stove to look at window 6, simultaneously, look at window 6 and communicate bell mouth 12, very big increase the observation sight who looks at window 6, can be more observe the burning condition in the stove, solved traditional look at the window and observed the visual angle not enough, need open the defect of operating door.

The inside of the door body 2 is provided with a cavity 14, the cavity 14 is filled with heat insulation leaf cotton, and the heat insulation leaf cotton has a good heat preservation effect so as to reduce the heat dissipation influence caused by the operation door. Meanwhile, in order to enhance the heat resistance of the door body 2, a pouring layer is arranged on the surface of one side of the door body 2, which is in contact with the hearth of the cremator, and the pouring layer is made of pouring materials; the casting material is a mixture of refractory cement, aggregate and steel fibers, and the casting layer can further seal the cavity 14 and fix the heat insulation leaf cotton.

The operation door system of the cremator with the explosion-proof function, disclosed by the invention, is provided with the pop-up mechanism, when the pressure in the cremator is overlarge, the operation door automatically pops open through the pop-up mechanism so as to realize automatic pressure relief, avoid accidents such as furnace explosion and the like as far as possible, and effectively reduce the potential safety hazard of the operation door. Meanwhile, the operating door is provided with the large-visual-angle observation window, so that the working condition of the hearth can be observed without opening the furnace door by workers, harmful waste gas drifting and flame rushing out are avoided, the use safety of the cremator is further improved, and a healthier working environment is provided for the workers. The invention also discloses a working method of the operation door system of the cremator with the explosion-proof function, by the method, when the cremator is in an abnormal state, the operation door can be automatically bounced open to realize automatic pressure relief, and meanwhile, the spraying mechanism carries out fire extinguishing treatment, so that the use safety is greatly improved.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.

Claims

1. The utility model provides a cremator operation door system with explosion-proof function, includes the operation door, its characterized in that: the operating door comprises a door frame (1), a door body (2), an ejection mechanism (5) and a viewing window (6);

the door frame (1) is fixed on a body of the cremator through a fixing component (17), the door body (2) is installed in the door frame (1), and the door body (2) is hinged with the door frame (1); an installation channel (51) is formed in one end of the door body (2), the pop-up mechanism (5) is installed in the installation channel (51), and the pop-up mechanism (5) is connected with the door frame (1);

the pop-up mechanism (5) consists of an adjusting screw seat (52), a positioning shaft (53) and a spring (54), the mounting channel (51) comprises a wide channel (511) and a narrow channel (512) which are communicated into a whole, a lock hole (13) is formed in the door frame (1), and the lock hole (13) is positioned on one side of the door frame (1) connected with the pop-up mechanism (5); the adjusting screw seat (52) is arranged in the wide channel (511), the positioning shaft (53) is positioned in the adjusting screw seat (52), one end of the positioning shaft (53) penetrates through the adjusting screw seat (52) to be connected with the lock hole (13), the other end of the positioning shaft extends into the narrow channel (512), and the spring (54) is sleeved on the positioning shaft (53) and positioned in the narrow channel (512);

the outer side wall of the door body (2) is provided with a handle (4) and is fixedly provided with a mounting plate (15), the mounting plate (15) is perpendicular to the door body (2), and the mounting plate (15) is provided with a smoke alarm (16);

a tapered hole (12) is further formed in the door body (2), and the inner diameter of the tapered hole (12) is gradually reduced from back to front; the observation window (6) is positioned at the front end of the tapered hole (12), and the observation window (6) comprises a fixed seat (61), a glass sheet (62) and an external nut (63); the glass sheet (62) is fixed at the front end of the fixed seat (61), the fixed seat (61) is connected with the conical hole (12) at the rear end in a sealing way, and the fixed seat (61) is fixed on the door body (2) through a countersunk head screw (64); the outer nut (63) is positioned on the front side of the fixed seat (61) and is fixedly connected with the fixed seat (61);

a fixed platform (20) is fixedly arranged above the door frame (1), and the spraying mechanism (3) is arranged on the fixed platform (20); the spraying mechanism (3) comprises a spraying box (31), a connecting pipe (33), a spraying pipe (35) and a spray head (36), the top of the spraying box (31) is fixedly communicated with a liquid interface (32), the spraying box (31) is communicated with the spraying pipe (35) through the connecting pipe (33), an electromagnetic valve (34) is arranged on the connecting pipe (33), and the electromagnetic valve (34) is electrically connected with the smoke alarm (16); both ends of the spray pipe (35) are provided with sealing heads (37) in a sealing mode, the spray pipe (35) is communicated with the spray heads (36), the spray heads (36) are arranged in a plurality, and the spray heads are distributed at the front end of the spray pipe (35) at equal intervals.

2. A cremator operating door system with explosion-proof function according to claim 1, wherein: the fixing component (17) is provided with a plurality of fixing components (17) and each fixing component (17) is composed of a hexagon bolt (18) and a nut (19).

3. A cremator operating door system with explosion-proof function according to claim 1, wherein: the door frame (1) is fixedly connected with a door frame hinge (7), the door body (2) is fixedly connected with a door body hinge (8) at one end, the door frame hinge (7) is vertically aligned with the door body hinge (8), a door rotating shaft (9) penetrates through the door frame hinge (7) and the door body hinge (8) together, two ends of the door rotating shaft (9) are connected with nuts (10), and a gasket (11) is arranged between each nut (10) and the door frame hinge (7).

4. A cremator operating door system with explosion-proof function according to claim 1, wherein: the positioning shaft (53) comprises a head part (531), a push plate part (532) and a rod part (533) which are sequentially connected, the head part (531) is in a smooth arc shape, the head part (531) penetrates through the adjusting screw seat (52) and then is connected with a lock hole (13) in the door frame (1), the rod part (533) penetrates through the adjusting screw seat (52) and then extends into the narrow channel (512), and the spring (54) is sleeved on the rod part (533).

5. A cremator operating door system with explosion-proof function according to claim 1, wherein: the diameter of the push plate portion (532) is larger than the diameter of the narrow channel (512).

6. A cremator operating door system with explosion-proof function according to claim 1, wherein: the glass sheet (62) is made of high-temperature-resistant quartz glass.

7. A cremator operating door system with explosion-proof function according to claim 1, wherein: the door body (2) is internally provided with a cavity (14), and the cavity (14) is filled with heat insulation leaf cotton.

8. A cremator operating door system with explosion-proof function according to claim 1, wherein: and a pouring layer is arranged on the surface of one side of the door body (2) contacting with the hearth of the cremator, and the pouring layer is made of pouring materials.

9. A cremator operating door system with explosion-proof function according to claim 1, wherein: the pouring material is a mixture of refractory cement, aggregate and steel fiber.

10. A method of operating an explosion-proof cremator operating door system according to any one of claims 1 to 9, wherein: the working method specifically comprises the following steps: under a normal state, the hearth of the cremator is in negative pressure; when the operation door is in an abnormal state, the pressure in the hearth of the cremator is in positive pressure and can continue to rise, the pressure in the hearth applies an outward acting force to the door body (2) of the operation door to push the head of the positioning shaft (53) in the pop-up mechanism (5) to slide out of the lock hole (13), the spring (54) is extruded in the sliding-out process, the distance between the positioning shaft (53) and the lock hole (13) is increased along with the compression of the spring (54), so that the head of the positioning shaft (53) is completely separated from the lock hole (13), the head of the positioning shaft (53) and the lock hole (13) are completely separated from the spring (54) to restore the original state, meanwhile, the door body (2) rotates along the door frame (1) and is flicked, the operation door is automatically opened, and high-pressure gas in the hearth is decompressed; in the pressure relief process, the smoke alarm (16) monitors that the smoke concentration in the environment exceeds the set value of the smoke alarm (16), the smoke alarm (16) gives an alarm, meanwhile, the smoke alarm (16) opens an electromagnetic valve (34) in the spraying mechanism (3), a liquid fire extinguishing agent which is held in the spraying box (31) in advance flows into a spraying pipe (35), and finally the spraying is carried out from a spray head (36), so that the high-temperature smoke or flame which is released out by pressure relief is subjected to fire extinguishing treatment, and the fire is prevented from happening.